p. 1
5.2. 2 Pacifi c Sardin e

^ vS.E
•« - + E 3J ,

. &DensMean 1. 3 — 1.2 - 1. 1 - 1.0 - 0.9 - 0.8 - 0.7 - 0.6 - 0.5 - 0.4 - 0.3 - 0.2 - 0. 1 - 0.0 -

T designatessurvey

w Pacifi c sardin e {Sardinops sagax) j

ifirimiimmmrnfififrirnimmnfirinnntmrt B 1 m "•""mmi m ni ! t 1 " t |o|N|D|j|F|M|A|M|J|J|A|S|O|N|D|J|F|M|A|M|J]J | A |S|O|N] D [ J | F | ise e | 1SS7 | 108 8 ' Surve y Dat e it h densit y = 0 | 1 J |M[ A 18S 9 f » 

### 'i'l'i' f 

### I

Figure 5.2.2-1 . Weekl y mea n larva l densit y (#/m3 + 1 S.E. ) a

t th e DCP

P intake
.

TENER A E9-055. 0 5-8 5 Fina l 316(b ) Demonstratio n Marc h 1,200 0H

m z m 

# n m ID
. o U l O l

O l I C O O )

3 c o 

# M r o 3 o =• • o o O 3 Pacifi c sardin e {Sardinops sagax)



### c o 

# E 1.

8 1. 5 1. 2 0. 9 0. 6 0. 3 0. 0

Dept h Contour s •"<»

—2 0 meter s

— — • 4 0 meter s — H M 6 0 meter s Poin t Bucho n

DCP P Intak e

Poin t Sa n Lui s

Jul . 21/9 7 Aug . 25 , "9 7 Sep . 29,'9 7 Oct . 20,'9 7 Nov . 17,'9 7 Dec . 10,'9 7 

### Figur e 5.2.2-2a . Mea

n larva l densit y (#/m 3 

### ) collectedi

n the DCP P stud y gridcell s an

da t th e entrainmen

t samplin g location
. is > i o TJ 0 ) o 3 o to at -3. Om

z m 

## H m C O i o c n c n b

1 0 0 -> i

2 a m 2 >

- ^ * r o 3 o -t. o o o 3 Pacifi c sardin e (Sardinops sagax)

C O 1.

8 1. 5 1. 2 0. 9 0. 6 0. 3 0. 0FinaI316(b Dept h Contour s

—2 0 meter s

— —4 0 meter s —••^• —6 0 meter s Poin t Bucho n

DCP P Intak e

Poin t Sa n Lui s

Jan
. 22,'9 8 Feb
. 26.'9 8 Mar . 18,'9 8 Apr . 15,'9 8 Ma y 18,'9 8 Jun
. 8 , "9 8 Figur e 5.2.2-2 b (continued) . Mean larval densit y (#/m 5 ) collecte di

n th e DCP P study gri dcell s an d a t th e entrainmen t

samplin g location
. c n i o r o T J u o 5 ;
<•> ' Cf l tt 

# a -3.m

z m 

## 2 m C D o c n c n

O i i 0 0 C O

tt. C O CT> 

# l l

- ^ 1 0 N ) tt o zr. o o O 3 Pacifi c sardin e (Sardinops sagax)

C O

# E 1.

8 1. 5 1. 2 0. 9 0. 6 0. 3 0. 0

Dept h Contour

s

' n i 2 0 meter

s

—4 0 meter

s -----* 6 0 meter

s Poin t Bucho n

DCP P Intak

e

Poin t San Lui s

Jul
. 20 , '9 8 Aug
. 25 , '9 8 Sep
. 15 , '9 8 Oct
. 5 , '9 8 No v10 , '9 8 Dec
. 8 , '9 8 

### Figur e 5.2.2-2c (continued) . Mea n larva l densit y (#/m J

### ) collectedi

n the DCP P stud y gri dcell s an

d a t the entrainmen

t sampling location
. c n i o i o •v u o # o " (f l tt 

## a ( Dm

z m m C O • o c n c n

i o o c o

C O o > 

### 2 ° tt S > 

## § 1

- * ( 0 r o 3 o =• . o o o 3 Pacifi c sardin e (Sardinops sagax)

C O 

# E 1.

8 1. 5 1. 2 0. 9 0. 6 0. 3 0. 0

Dept h Contour

s

— — - 2 0 meter

s

—4 0 meter

s •^• ^ 6 0 meter

s Poin t Bucho n
DCP P Intak

e

Poin t Sa n Lui s

Jan
. 11 , '9 9 Feb
. 2 , '9 9 Mar
. 16 , '9 9 Apr
. 13 , '9 9 Ma y 23 , '9 9 Ju n 22 , '9 9 Figur e 5.2.2-2 d (continued) . Mean larva l densit y (#/m J ) collecte di n th e DCP P study gri dcell s an da t th e entrainmen t

samplin g location
. c n r o r o
" O 

### u o 3 o Cf l u 

## a 3

;T 3

Ju iP. 6
5.2. 2 Pacifi c Sardin e



### u c 

# I z, o u O o c 3 C T O J C C O o t u 0 . Pacifi c sardin e (Sardinops sagax) N = 1,40 2 Media n Mea n



### ••••! • 1. 5 2. 8 4. 0 5. 3 6. 5 7. B

Lengt h Categor

y (mm ) "-T- - 1 2 I ' ' ' I ' ' ' I ' ' ' I '

1 6 2 0 ' 2 4 2 B I I I Estimate d ag e (days )
Figure 5.2.2-3 . Lengt

h frequenc y o f

all measuredlarva

l fish collecte di

n th e entrainment samples
. Minimum , median , mean , maximum , an dcentra l 98 % ofth e larva

l length s are noted
. X-axi s scal e i s not

continuou s a

t large r lengths
.

TENERA E9-055. 0 5-9 0 Fina l 316(b ) Demonstratio n Marc h 1,200 05.2. 2 Pacifi c Sardin e P. 7

15 "

10 "

o c 5- > 3 O o O Mi n 1 % Pacifi c sardin e (Sardinops sagax)
Entrainment : N=15 5 Median ! Mea n

* 99 % Max



# l l M T 

# ,„|l f 

# l IrrX

>. " 15 " 

### c O J 3 zr O J *• 10- I c O J C J - I O J 5 — I ' ' I

1. 3 2. 5 3. 8 5. 0 6. 3 7. 5 8. 8 10. 0 11. 3 12. 5 -v-<n> Grid : N=2,88 2 Median l Mea n Mi n 1 %



# Illl l 99 % Ma x

IM«I-MI T HIIIILIIIIM1M- , 1. 3 2. 5 3. 8 5. 0 6. 3 7. 5 8. 8 10. 0 11. 3 12. 5 <•#& »

Lengt h Categor

y (mm )

Figur e 5.2.2-4 . Length frequenc y o f measure dfish fro mentrainmen t survey s tha t

paire dwith gri dsurvey s (both year s combined)
. Minimum , median , mean , maximum , an dcentra l 98 % ofth e larva l length s ar e noted
. X-axi s scal e i s no t continuou s a t

large r lengths
. TENER A E9-055. 0 5-9 1 Fina l 316(b ) Demonstratio n Marc h 1.200 0P. 8
5.2. 2 Pacifi c Sardin e

u i C O " +DensMean 0.2 4 — 0.2 2 — 0.20- =o>coulitiili 0.1 4 ~ = 0.12- ^ o.io- = 0.08- = 0.06- =Op10°llllllllll
o.o o — -0.0 2 - = -0.0 4 ~ = -0.0 6 - = -0.0 8 — Pacifi c sardin e (Sardinops sagax)

m • * m

illl l 199 0 199 1 199 2 199 3 199 4 Yea r *

I 1995 • • 

# I

I I i 199 6 199 7 199 8

Figur e 5.2.2-5 . Annua

l mea n densit y +/

- 2 standar

derror s (vertica

l lines ) andgran dmea

n densit y fo r all year s combine d(horizonta l line ) fo r th e Intak e Cov e surfac e plankto n tows . The annua l mea n densitie s ar

e basedo n seve n consecutiv e month s o f

data(Decembe

r throug h June ) excep t fo r 1990 , whic h ha

donl y five month s (Februar y throug h June)
.

TENERA E9-055. 0 5-9 2 Fina l 316(b ) Demonstratio n Marc h 1,200 05.2. 2 Pacifi c Sardin e P. 9

Pacifi c sardin e (Sardinops sagax) - mea n duratio n o.os o - 0.040 * 0.04 0 — 0.03 S — o.os o — 0.02 S — 0.02 0 * 0.016 " o.oi o — O.OO S - O.OO O - »

1 I \ \ V \ V

—i—i—i—i—i—i—i—i—i—|—i—i—r — Analysi s Perio d 3 : Ju l 1997-Ju n 199 8 Densit y Extrapolate d Ps

of f scal e 1/Ps = 47. 3 PM= 0.00028 4 ±0.014 9

90 % C.l
.

T—i—i—i—i—i—i—i—i— i —i—i—i—i—i—i—i—i—i—i—i—i—i—i—i—i—r * O x 6 x 10 x 10 x , 20 x 2S x SO x 36 x 40 x O k m S T k m 17 4 k m 261k m 34 7 k m 43 4 k m 82 1 k m BOSk m OB S k m Six a o f Populatio n Relativ e t o Stud y Qrt d Equivalen t DMtsnc e Alongshor a Pacifi c sardin e (Sardinops sagax) - mea n duratio n o.os o — 0.04 S — 0.040 - 0.03 S — 0.03 0 - £ 0.02 B - j 0.02 0 — O.OI S O.OI O O.OO S — Analysi s Perio d 4 : Ju l 1998-Ju n 199 9

N o analysi s performed ; ther e were n o survey s durin g thi s perio d wher

e sardin e larva e were foun d i n bot h gri d sample s an d entrainmen t sample s

0.00 0 r " i—i— . —i— i i i i i i i i i i i i i i i i i T i i i i O x O k m B x

e r k m r—i—i—|—i— ri i—|—i—i— i i

1 0 x 1S x 20 x 2S x SO x 3B x 40 x 1 7 4 k m 28 1 k m 34 7 k m 43 4 k m S2 1 k m 60 S k m S8 S k m Six a o f Populatio n Relativ e t o Stud y Gri d Equivalen t Dlrtanc a Alongshor e Figur e 5.2.2-6a . Tota

l annua l entrainmen

tmortalit y (P^) an

d 90 % confidenc e interva l (CI. ) a s a functio n o f

di e reciprocal ofth e fraction o f di e populatio n a

tris k an d containe d i n di e stud y gri d (p.) use d t o approximat e th e exten tofth e study gri d populatio n base d o n offshor e extrapolatio n o f study gri d abundance extende d alongshor e usin g bod i onshor e an d alongshor e curren

tmovement s wit h di e 90 % CI . indicated .
TENERA E9-055. 0 5-9 3 Fina l 316(b ) Demonstratio n Marc h 1,200 0P.1 0
5.2. 2 Pacifi c Sardin e
Pacifi c sardin e (Sardinops sagax) - maximu m duratio n

o.oo Analysi s Perio d 3 : Ju l 1997-Ju n 199 8 Densit y Extrapolate

d Ps of f scal e 1/Ps = 1,07

8 Pu = 0.000066 9 1 0.014 9

Estimat e 90 % C.l.

O x O k m S x

e r k m 1 0 x 1 S x

1 7 4 k m 26 1 k m 2 0 x 26 x SO x 3fi x 40 x 3 4 7 k m 43 4 k m 62 1 k m 60 S k m 6B 5 k m Slx e o f Populatio n Relativ e t o Stud y Gri d Equivalen t Distanc e Alongahor e Pacifi c sardin e (Sardinops sagax) - maximu m duratio n 0.20 - 0.18 - o.i e — 0.14 - 0.12 - J | o.io^ i o.o e o.o e — 0.0 4 — 0.0 2 — O.OO * Analysi s Perio d 4 : Ju l 1998-Ju n 199 9

N o analysi s performed ; ther e wer e n o survey

s durin g thi s perio d wher e sardin e larva

e wer e foun d i n bot

h gri d sample

s an d entrainmen t sample s

O x O k m S x

6 7 k m 1—i—I—i—i—I—i—I— r

l O x IS x 1 7 4 k m 28 1 k n 2 0 x 2S x 30 x 3S x 40 x 3 4 7 k m 43 4 k m 62 1 k m BO B k m OO O k m Siz e o f Populatio n Relativ e t o Stud y Gri d Equivalen t Distanc e Alongahor e Figur e 5.2.2-6b . Tota

l annua l entrainmentmortalit

y (P^) an

d 90 % confidenc e interva l (CI. ) a s a functio n o f

di e reciprocal ofth e fraction ofth e populatio n atrisk and containe d i n th e stud y gri d ( j > ) use d t o approximat

e di e exten to f

di e stud y gri d populatio n base d o n offshor e extrapolatio n o f stud y gri d abundanc e extende d alongshor e usin g bod i onshor e an d alongshor e curren

t movement s wid i di e 90 % CI . indicated .
TENERA E9-055. 0 5-9 4 Fina l 316(b ) Demonstratio n Marc h 1,200 0P.1 1
5.2. 2 Pacifi c Sardin e

184,64 8 km 2

10 0 0 100 20 0 Kilometer s Figur e 5.2.2-7 . PFM C managemen t are acontainin g th e spawnin g populatio n ofth e Pacifi c sardin e (Hil l e t

al
. i n press)
. TENER A E9-055. 0 5-9 5 Fina l 316(b ) Demonstratio n Marc h 1,200 0P.1 2 ^B :



# Blan k Pag eP.1 3 5.2. 3 Norther n Anchov

y 

### 5.2.3 Assessment

of Northern

Anchovy

(Engrauli s mordax)

Engraulis mordax

(Girar d1854) ; norther

n anchovy ; lengt

h to 2 3 cm ; Quee

n Charlott e Islandi n Britis h Columbi at o Cab o Sa n Lucas , Baj aCaliforni aSu r an dlowe r Gul f o f California ; surfac e an

dinshor e t o 31 0 m ; blue to greenis h o n back , silver

y below ; adult s wit

h fain t silver y side strip e (Mille

r an dLe a 1972 ; Eschmeye

r et al
. 1983)
. The norther

n anchovy i s one o f

fou r specie s i n th e famil y Engraulidida

e (th e anchovies ) reporte d fro mCalifomi acoasta

l water s (Mille

r an dLe a1972)
. Othe

r representative s o f

thi s famil y ar e th e deepbod y anchovy (Anehoa compressa), slough anchovy (Anehoa delicatissima), an dth e anchoveta(Centengraulis mysticetus; Eschmeye r e t al
. 1983 ; Love et

al
. 1996)
. Potentially thre e distinc t sub-population s o f

norther n anchovy liv e alon g di e Pacifi c coas t ofth e Unite dState s (L o 1985 ; PFMC 1990 ; Lov e 1996)
. One grou p i s foun dfro mBritis h Columbi ato nort h o f Sa n Francisco , anothe

r i s foun dfro mSa n Francisc o t o norther

n Baj aCalifornia , an

dth e las t i s foun d alon g th e souther

n coas t o f Baja
. Thi s groupin g o f

adult sub-population s ha s bee

n accepte da s par t ofth e Fisher

y Managemen

t Pla n (FMP ) fo

r Coasta l Pelagi c Specie s (CPS ) b

y th e Pacifi c Fisher y Managemen

t Counci l (PFMC 1998)
. Norther n anchovy i

n th e centra

l subpopulatio n ar

e harveste dcommercially i n Mexic o an

d Californi afo

r huma n consumption , liv e bait , dea dbait , an dothe r commercia

l use s (PFM C 1998)
. Landing s o f

norther n anchovy i

n Californi abetwee

n 191 6 an d199 7 varie dfro

malow o f

7 2 metri c ton s (MT ) i

n 1926 t o ahig

h o f 143,79 9 M

T i n 197 5 (PFMC 1998)
. Althoug h northe m anchovy ar

e fishedthroughout

the state , commercia

l landing s ar

e usually mad

e i n Sa n Francisco , Monterey , an

dLo s Angeles ; therefore , landing record s fo r loca l port s ar e limited
. The mos t recen t annua l (1997 ) loca

l landing s datafo

r norther n anchovy reporte db

y CDF&G ar

e fro mPor t Sa n Lui s (22. 6 MT) , bu

t th e averag e annua

l landing fro

mAvil adurin g th e perio d1990-199 8 i s

TENER A E9-055. 0 5-9 6 Fina l 316(b ) Demonstratio n Marc h 1,200 0P.1 4 5.2. 3 Norther n Anchov y
2. 7 MT , an

d th e mos trecen tnorther n anchov y landin g a

tth e por to f Morr o Bay occurred i

n 198 1 (Figur e 5.2.3-1) . Reproductio n o f

norther n anchov y varie s wit

h tim e an d location . Northern anchov y of f souther n an d centra l Californi a can reac

h sexua l maturit

y b y th e en d o f

thei r firs tyear , wit

h al l individual s maturin g b y 4 y r o f

age ; of f Orego n an

d Washingto n the y d o no tmatur e until thei r thir

d yea r (Lov e 1996) . A n earl y estimat e o f norther n anchov y fecundit

y (Baxte r 1967 ) indicate s a n annua l range o f 20,000-30,00 0 egg s pe r female . More recen tdat a fro m Lov e (1996 ) indicate s tha t female s can releas e fro

m 2,700-16,00 0 egg s per batch , wit h annua l fecundit y a s hig h a s 130,00 0 egg s i n souther n Californi a an

d aroun d 35,00 0 egg s pe r yea r in norther n populations . Parris

h e t al . (1986 ) indicate tha

ttotal annua

l fecundity fro

m th e firs tt o di e fourth-plu s spawnin g season s range s fro

m 32,51 4 t o 322,95 7 egg s per female , respectively. I n souther n California , anchov y spaw n year-roun d with peak s durin g lat e winte r t o sprin g (Lov e 1996 ; Mose r 1996) . I

n Orego n and Washington , spawnin g ca n occu r from mid-Jun e t o mid Augus t(Lov e 1996) . Durin g di e pea k o f di e spawnin g season , female s can spawn ever y 6- 8 d (Lov e 1996 ; Schlotterbec k an d Connall y 1982) . Spawnin g normall y occur s a tnigh ti n th e uppe r layer s o f di e wate r colum n (Har

t1973) . Th e mos trecen tstoc k assessmen tfo r norther n anchov y estimate d spawnin g biomas s a t388,00 0 M T (C V 38% ) durin g th e middl e o f Februar y 199 5 (Jacobso n e tal . 1995) . Althoug h n o mor e recentstoc k assessment s hav e bee n made , a qualitativ e analysi s ofth e availabl e dat a indicate s tha

tthi s remain s di e bes testimat e o f curren tspawnin g biomas s (Jacobso n e tal . 1997) . Female s ar

e oviparous , producin g planktoni c egg s an d larvae (Mose r 1996) . Egg s occu r fro m th e surfac e t o 7 5 m dept

h bu tusuall y ar

e found i n th e upper 5 0 m (Emmet te tal . 1991) . Th e egg s hatc h i n 2- 4 d , dependin g o n th e wate r temperature , an d releas e 2.5-3. 0 m

m lon g relativel y undevelope d larvae (Mose r 1996) . Th e larvae remain largel y inactive , floatin g ove r 90 % ofth e time , wit h intens e swimmin g event s takin g plac e abou tonc e per minute an d lastin g fro

m on e t o tw o second s (Hunte r 1976) . Larvae begi n schoolin g a t11-1 2 m

m an d transfor m into juvenile s a

t 35-4 0 m m i n approximatel y 7 0 d (Har t1973) .
TENERA E9-055. 0 5-9 7 Fina l 316(b ) Demonstratio n Marc h 1,200 0P.1 5 

# 0 * 

# Q 0 D 0 0 Q 0 0 0 0 0 0 D 0 5.2. 3 Norther n Anchov y



# 0 0 S.2.3. 1 Symmmair y o f Fiel d Golleeltoomi s Norther n anchovy larva

e wer e collecte dintermittentl y a t th e DCP P intak e structure durin g th e year s 1996-199 9 (Appendi x M), wit h thei r greates t abundanc e tendin g t o occur betwee n Decembe r andMa y an dthei r highes t abundanc e i

n Januar y 199 8 (Fagmr

e 5.23-2)
. Thes e larva

l densit y estimate s represente datota l o f 3,44 3 larva

l norther n anchovie s i

n 87 9 bong o ne

t subsample s collecte da

t th e DCP P intak e structur e betwee n Octobe r 199 6 an dJune 1999 , representin g 19 % ofth e subsample s collecte dan dprocesse dfro

mtha t locatio n durin g tha

t period
. A n E l Nin o even

t bega n durin g di e sprin g o f

1997 (NOA

A 1999 ) an

dwa s detecte dalon g th e Californi acoas t

i n fall/winte

r o f 1997-9 8 (Lyn

n e t al
. 1998)
. Thi s climatologica l an d oceanographi c even

t ma y accoun t fo r th e observe dpea

k i n larva l norther n anchovy abundanc e durin g 1997-98
. The primar y spawnin g ground s o f

norther n anchovy are sout

h o f Poin t Conceptio n (Har

t 1973 ; PFMC 1998) , but

di e war mwate r tha t movedup th e coas t

a s aresult o f thi s E l Niii o coul dhav e carrie dth e anchovy spawnin g biomas s t o th e nort h o f thei r norma l southerl y distribution
. Larva l norther n anchovy occurre di

n th e DCP P stud y gri ddurin g all but

on e mont h (Octobe r 1998 ) ofth e samplin g perio d(Appenndlii K H) , wit h thei r highes t abundanc e durin g March-Ma y 199 8 (FSgimr

e §.23-3)
. The pattern s observe di n di e stud y gri dfurthe

r suppor t th e suppositio n tha t di e 1997-9 8 E

l Nin o ma y hav e displace ddiei r

spawning biomas s center

furthe r nort h tha n it s expecte ddistributio n i

n acoole r wate r year . The densit

y estimate s fro

mth e stud

y gri d represente d8,46

4 larva l norther n anchovie s identifiedfro

m1,13 4 bong o net

subsamples , representin g 37 % ofth e stud y gri dsubsample s processe dfro mJul y 1997-Jun e 1999
. Standar dlength s o f

all norther

n anchovy larva

e collecte da

t the DCP P intak e structur e betwee n October 199 6 andJun e 199 9 range dfro maminimu

mo f 1. 6 m mt o amaximu

mo f 37. 1 m m (F5gMr e 5.23-4)
. The centra

l 98 % o f thi s length-frequenc y distributio n resulte di n aminimu

m lengt h o f 2. 1 m man damaximu

mlengt h o f 2 5 mm . Reportedhatchin g siz e fo r thi s specie s range s fro m2.5-3. 0 m

m(Mose r 1996)
. The fac

t tha t w e observedsom

e larva e smalle r ma n th e reporte dhatchin g length s ca n b e explaine dpartl y b

y natura l variatio n o f

hatch length s within th e populatio n an

dpartl y b y di e phenomeno n o f

shrinkag e following preservatio n (Theilacker 1980)
. TENERA E9-055. 0 5-9 8 Fina l 316(b ) Demonstratio n Marc h 1,200 0P.1 6 5.2. 3 Norther n Anchov y
Th e mea n larva l lengt h i n thi s distributio n wa s 6. 1 mm . The growt h rate o f larva l norther n anchov y (0.4 5 mm/d ) reporte dby Metho t andKrame

r (1979 ) wa s usedt o estimat e age s o f entraine dlarvae
. Assumin g tha t larvae les s tha

n th e minimu

m1 % lengt

h (2. 1 mm) wer

e immediately post-hatc h an dage dzer o days , then th e estimate dag e o f larvae entraine dcoul d rang e fromzer o day s u

p t o 5 1 dpost-hatchin g fo

r th e longes t

larv ameasure d(2 5 mm)
. O n average , th e estimate dag e o f norther n anchov y larvae entraine da t DCP P wa s ca . 9 dpost
hatching
. N o significant

difference s were detecte dbetween th e bi-moda l distribution s o f

larva l norther n anchov y length s a

t th e DCP P intak e andfromth e stud

y gri d(Figure 5.23-5 ) usin g a Kolmogorov-Smirno v tes t

( p > 0.299 ; Appendix J) . Additionally , n o significant differenc e between mea

n iengdi s at

di e DCP P intak e (8. 8 mm ) an

dstud y gri d(9. 2 mm ) wa s detecte db y at
tes t ( p > 0.358)
. Thes e results, combine dwidi di e similarit y ofth e length-frequenc y distributions , indicate ma

t th e subsample s i

n th e tw o location s came fro mth e same population
. 

### 5.2.3. 2 Estimatin g Tota l Annua l Entrainmen t Th e annua l estimate dmea

n entrainment

an dassociate dstandar

derro r fo r norther n anchov y larvae ar e presente di

n Tabl e 5.23-1 . Estimate s o f total annua

l entrainment

(E T ) were nearl y fou r time s higher

i n 1997-9 8 Analysi s Perio d2(E~ T = 104,000,000 ) tha

n i n 1996-9 7 Analysi s Perio d1 ( E~ T = 26,600,000)
. A valu e o f 2 • SE(E~ T

) ca n b e usedt o approximate a95 % confidenc e interva

l aroundth e point

estimate s fo

r each analysi s period
. Th e confidenc e interval s fo r Analysi s Period s 1 an

d2 d o no t overlap , indicatin g dia

t there wer e probabl y statisticall y significant difference s betwee

n th e estimate s fromth e tw o year s (althoug h no t al l varianc e term s are considered)
. Th e large

r estimate fo

r 1997-9 8 ma

y hav e bee n du e t o di e E

l Nin o event

tha t occurre ddurin g thi s tim e period
. Th e war mwater transporte dnorthwar

dlikel y brough

t mor e norther n anchov y into th e water s aroun dDiabl o Canyon fro mth e center

o f thei r spawnin g distributio n tha

t typicall y occur s sout

h o f Point Conception
. Estimate s o f

annua l norther n anchov y entrainment

fo r al l thre e analysi s period s wer e adjuste d (Tabl e 5.23-2 ) t o th e long-ter maverag e larva

l fis h abundanc e inde

x fro mth e Intak

e Cov e TENER A E9-055. 0 5-9 9 Fina l 316(b ) Demonstratio n Marc h 1,200 0P.1 7 5.2. 3 Norther n Anchov y plankto n tow s (Figure 5.23-6) . Th e averag e inde

x (/, ) wa s 0.01 5 larvae/m

^ i n 1997 an d0.02 1 larvae/m ^ i n 1998
. Th e long-ter

maverag e inde

x ( / ) wa s 0.07 7 larvae/m

^ fo r th e year s 1990

— 1998
. Th e rati o usedt o adjus t

tota l annua l entrainmen

t t o th e long-ter

maverag e ( /

//, ) wa s calculate da s 5.1 1 fo

r 199 7 an d3.6 2 fo r 1998 , indicatin g tha

t larva l abundanc e durin g thos e year s wa s lowe r tha n th e long-ter

maverage . Although th e correctio n resulte di n large r estimate s fo

r bot h periods , th e differenc e betwee n E Adj

_ T fo r 1996-9 7 ( E Adj

_ T = 136,000,000 ) an

d1997-9 8 ( E Adj . T = 376,000,000 ) wa s reducedfro mafacto r o f 4 fo r E T to les s tha

n afacto r o f 3
. The adjustedentrainmen

t estimate s fo

r analysi s period s 2 an

d3 wer e ver y clos e i n valu e becaus e bot

h period s overla

p fo r muc h ofth e perio do f

pea k larva l abundanc e fo

r norther n anchovy
. 

### 5.2.3. 4 Fecundit

y Hindcastin g (FH) Fecundit y hindcastin g require s age-specifi c fecundit y (M x ) an dmortalit y (L x ) t o asses s entrainment

effects
. Butle

r et al
. (1993 ) modeledeg g an

dlarva l survivorship o f

norther n anchovy (Tabl e 5.23-3) . Their

'best ' estimat

e i s derive db

y fittin g th e rang e o f

mortalit y estimate s fro

m fieldcollection s t o th e assumptio n of astabl e an dstationar y population
. Instantaneou s daily mortalit y estimate s wer

e use dfro mButle r et al
. (1993 ) fo

r eg g (0.231) , yolk-sac (0.366) , an d early larva l stage s (0.286)
. Thes e rate s ca n b e converted , ove

r thei r averag e stag e durations , t o finit e survivorship rate s fo

r eac h developmenta

l stage : eg g (0.512) , yolk-sa c (0.268) , an

dearly larva l stage s (0.414)
. Surviva

l rate s fo r egg s an dlarva e wer e then calculate dfo

r a n estimate d averag e ag e a

t entrainmen

t o f c a9 d , usin g agrowt

h rat e o f 0.4 5 mm/ d(Methot an dKrame r 1979 ) an da n averag e (6. 1 mm) an

d1 % smalles t

(2. 1 mm) siz e a

t entrainment
. Surviva

l t o entrainment

fo r average-age dlarva

e wa s thu s estimate da s

Th e FH approach combine s larva

l entrainmen

t losses , adult

fecundity , ag e a

t maturity , an

d longevit y t o hindcas t

th e number s o f

adult female s effectivel

y removedfro

mth e reproductively activ e population
. Clar

k an dPhillip s (1952 ) repor

t ag e a t sexua l maturit y a s 1- 2 yr . I

n subsequen t calculations , we will assum e the mid-valu e o f

1. 5 yr an dassum e th e reporte drang e

TENER A E9-055. 0 5-10 0 Fina l 316(b ) Demonstratio n Marc h 1,200 0P.1 8 5.2. 3 Norther n Anchov y correspond s to 99 % of anorma l distribution
. For

longevity , Har

t (1973 ) report s avalu e o f

7 yr , but Leet e t al
. (1992 ) state s tha

t norther n anchovy i

n th e fishedpopulatio n rarel y excee d4 y r o f age . W e will us e th e valu e o f

4 yr t o represent

th e mos t likely reproductiv e lif

e span . Parris h et

al
. (1986 ) estimate s a

n annua l fecundit y i n th e secondspawnin g seaso n o f 102,17 4 egg s pe

r female
. Th e adjustedestimate o f

annuall y entraine dnorther n anchovy larva

e (E AdJ

_ T ) wa s usedt o estimate th e numbe

r o f breedin g female s neede dt o produc e thos e larva e i n analysi s period s 1,2 , an d3 (Tabl e 5.2.3-4) . Estimate s o f FH fo r th e 1996-9 7 analysi s perio d(FH = 16,100 ) wer

e les s tha n hal f o f thos e estimate dfo

r th e 1997-9 8 Analysi s Perio d2 (FH = 44,600)
. Simila

r t o th e result s see n wit h entrainment , thes e difference s are aresult ofth e entrainment

estimate s fo

r thos e period s postulate dt o b e du e t o th e E l Nin o event

tha t occurre ddurin g di e secondsamplin g year . Sensitivit y Analysi s Fecundit y ha dth e greates t

leverag e o

n recalculate dvalue s o f

FH (Tabl e 5.23-5) . Varyin g thi s parameter i n th e model resulte di

n a n FH rang e o f 3,110-232,00 0 adul t

female s amon g th e thre e analysi s periods , compare dt o th e origina l estimate o f

16,100-44,70 0 adult

females
. Survivorship (specifically , yolk-sac survivorship ) ha dth e next greates t amoun t o f leverag e o

n recalculate d FH. 

### 5.2.3. 5 Adul t Equivalen t Los s (AEL) Th e AEL approach usedestimate s ofth e abundanc e o f entraine dorganism s to projec t th e los s o f equivalent number s o f

adult s basedo

n mortalit y schedule s andag e a

t recruitment

into th e fishery
. The instantaneou s surviva

l rate fro mme entraine dlarva

l stag e t o recruitment

int o th e norther

n anchovy fisher

y (throug h juvenil e an

dearly adult

stage s t o 2 y r

o f age ) i s 0.00031 8 estimate d fro mth e lif e tabl e produce db

y Butle r et al
. (1993 ; Tabl e 5.23-4) . Averag e ag e a t entrainment fo r northe manchov y larva

e ( 9 d ) wa s calculate dby dividin g th e averag e larva l lengt h a t entrainment

(minu s lengt

h a t hatching ) b

y aliterature-base d growt

h rate o f 0.4 5 m mpe r da y (Metho t an dKrame r 1979)
. Butle

r et al
. (1993 ) apportione dsurvivorship t o recruitment int o

TENER A E9-055. 0 5-10 1 Fina l 316(b ) Demonstratio n Marc h 1,200 0P.1 9 5.2. 3 Norther n Anchov

y

severa l developmenta

l stages , an

dAEL wa s calculate dusin g th e entrainmen t ofasingl e ag e clas s havin g the averag e ag e a

t recruitmen

t o f 2 yr . The number s o f

equivalen t adult norther n anchovie s predicte dfro

madjustedtota

l annua l entrainmen

t range dfro

m43,20 0 2 yr-ol d recruit s i n 1996-9 7 t o 120,000 i

n 1997-9 8 (Tabl e 5.23-6) . The estimate s nearl y triple dbetwee n years , possibly du e t o E

l Nino-induce d increase s i n larva l abundanc e durin g th e secondyear . However , th e 90 % confidenc e interval s overlap , whic

h ma y indicat e tha t thes e estimate s ar

e no t significantly differen

t betwee n samplin g periods
. Sensitivit y Analysi s Early an dlat e larva l survivorship ha

ddi e greates t

leverag e o

n recalculate dvalue s o f

AEL (Tabl e 5.23-7) . Varyin g eidier o f thes e tw o parameter s i

n th e mode

l resulte di n a n AEL rang e o f 8,330-621,00 0 adult

equivalent s amon g th e thre e analysi s periods , comparedt o th e origina l estimate o f

43,200-120,00 0 adult

equivalents
. Pre-recrui t

an dearly juvenil e survivorship ha dth e next greates t leverag e o

n estimate s o f

AEL. 

### 5.2.3. 6 Empirica l Transport Mode l (ETM) Ther e wa s larg e variatio n i

n th e estimate s o f

proportiona

l entrainmen

t (PE) fo r eac h ith survey durin g th e tw o analysi s period s (July 1997-Jun e 199 8 an dJul y 1997-Jun e 1998 ; Tabl e 5.23-8) . Estimate s of

proportiona

l entrainment

rangedfro

mzero t o a s hig

h a s 0.0102
. Maximu

mvalue s o f PE i i n th e tw o period s occurre ddurin g Januar y 199 8 (0.00186 ) an

dFebruar y 199 9 (0.0102)
. During Analysi s Perio d3 , th e larges t proportio n o f

larva e wer e collecte ddurin g Januar

y 199 8 (fj

= 0.468) , th e sam

e monthly survey perio da s th e maximu mPE, . I n th e secon

dperiod , th e larges t proportio n o f

larva e wer e collecte ddurin g Augus t

199 8 (fj- 0.431)
. The Februar y 199 9 f wa s 0.055 , indicatin g tha

t th e maximu

mPE, wa s weightedles s tha n other s durin g th e stud

y perio di n calculatin g th e larva

l mortalit y estimate P

M . Whe n bot h PE, an dfjwer e equa l to zero , n o larva

e wer e collecte da

t eithe r th e DCP P intak e o r fro mth e stud

y grid
. Whe

n PE, = 0 an

df>0, larva

e wer e collecte da

t th e DCP P intak e durin g th e TENER A E9-055. 0 5-10 2 Fina l 316(b ) Demonstratio n Marc h 1.200 0P.2 0 5.2. 3 Norther n Anchov y

surve y perio dbu

t no t durin g th e entrainment

survey paire dwit

h th e 72-hour

stud y gri dsurvey . Thi s occurre di

n Februar y an dagain i n Septembe

r o f 199 8 and , a s expected , wer e accompanie d by low f values
. Larva l entrainment

mortalit y (P M ) wa s estimate dfo

r th e two , year-lon g periods , usin g tw o estimate s ofth e duratio n o f tim e tha t norther n anchovy larva

e ma y b e susceptibl e t o entrainment
. Thes e duration s wer

e estimate da s 9 dand51. 2 dusin g th e mea n andmaximumlengths , respectively , o f

entraine dlarvae
. Northe manchovy larva e wer e disperse dthroughout

th e stud y gri d(Figure 5.23-3) , bu

t the y ar e typicall y foun

di n thei r greates t densit y offshor e (Mose r e t al
. 1993)
. Therefore , P s wa s calculate db y extrapolatin g stud y gri dabundanc e pattern s offshor e an d die n extendin g the

malongshore
. Estimate s o f total entrainment

mortalit y (P M ) wer e 0.00057 5 fo r th e 1997-199 8 analysi s perio dan d0.0018 7 fo

r th e 1998-199 9 analysi s period , usin g th e mea n larva l duration
. Smalle

r value s o f P M wer e estimate dusin g di e maximumlarva l duration : 0.000078 6 i

n th e 1997-199 8 perio dand0.00018 4 i n th e 1998-199 9 period
. Standar derror s o f P M were larg e relativ e t o di e estimates : 0.016 8 i n di e firs t perio dan d0.038 5 i

n th e second period
. P s wa s calculate da s aproportio n o f larva l number s i

n th e stud y gri dt o a n extrapolate dnumbe

r usin g th e gri ddensit

y andalarge

r are adefinedby alongshor e an doffshor e current measurements . Thes e area s wer e afunction ofth e estimate dduratio n o f larva l susceptibilit

y t o entrainment , andfo

r th e period s 1997-199 8 an d1998-1999 , average d63 9 and37 0 km 2 fo r th e mea n larva l duration , an

d6,67 0 an d6,14 0 km 2 fo

r th e maximu

mlarva l duration , respectively
. Fo r th e plot s showin g th e sensitivit y analysi s fo

r each analysi s period , P M decline drapidl y wit

h increasin g \l

P s ., usin g either

averag e o r

maximu mlengt h t o calculate larva

l duratio n (Figur e 5.23-7) . A s duratio n increase dwithi n a n analysi s period , P M decrease dand\IP S

increased
. There wer e larg e difference s between analysi s period s i n th e point

estimate s o f

P M fo r bot h larva l durations
. The larg e erro r associate dwit

h calculatin g P

M ma y account fo r som e ofth e difference s an

dcontribute s t o th e level o f uncertaint y associate dwit

h thes e estimates
.

TENER A E9-055. 0 5-10 3 Fina l 316(b) Demonstratio n Marc h 1,200 0P.2 1 5.2. 3 Norther n Anchov y 

### 5.2.3. 7 Interpretatio n of Assessmen t Result s Population-leve l losses , usin g th e estimate dlarva l mortalit y P M due to entrainment

a t DCPP , ca n b e compared , a s asmall fraction , t o recen t spawnin g stoc

k estimate s o f

388,00 0 M

T o f norther n anchovy i n th e region fro

mSa n Francisc o to Punt

aBaja , Mexic o (Jacobso n et al
. 1997)
. Th

e estimate dlosse s b

y weigh t ar e calculated , usin g th e averag e area s to determin e P M (Sectio n 5.2.3.6) , a s aproportio n ofth e large r stoc k assessmen

t are aof 231,19 2 km 2 (Figure 5.23-8) . The spawnin g stock

biomas s i s multiplie db

y th e produc t

o f thi s proportio n an

dP M . Fo r th e 1997-199 8 an

d1998-199 9 analysi s periods , thes e losse s ar e conservatively estimated , assumin g n o compensation , a s 0.6 1 M T an d1.1 6 M T (base do n mea n larva l duration ) an

d0.8 8 M T an d 1.9 0 MT (base do

n maximu mlarva l duration) , respectively
. B y comparison , approximately 1,18 5 M T o f norther n anchov y wer e landedi n th e Montere

y Ba y Nationa l Marin e Sanctuary-wetfis h (whol e fish) fisher y i n 1995 (Star

r et al
. 1998)
. Durin g 1980 t o 1988 , th e pric e pai dfo

r anchovy landedby th e U.S
. non-reductio n wetfish (other tha n liv e bait) fisher

y average dS288/M

T (Leet et al
. 1992)
. I

n 1988 , the pric e fo

r anchovy soldi

n th e reductio n wetfish (processe dfo r meal ) fisher

y wa s S32/MT (Leet

e t al
. 1992)
. Estimate s o f

AEL ca n b e converte dto direc t

reduction s ofth e standin g stock by convertin g the

m to unit s o f biomas s (e.g. , kilogram s o f norther n anchovy)
. Estimatin g tha t th e averag e weigh

t ofa norther n anchovy fro

mth e liv e bait

an dwetfish fisherie s i s 1 9 g (estimate dfro mClar k an d Phillip s 1952) an

dassumin g tha

t thi s represent s a

n averag e weigh

t o f a n adult i n th e populatio n a

t large , AEL

estimate s (43,20 0 i

n 1996-9 7 an

d120,000 i

n 1997-98 ) translate to amaximu m estimatedweigh t

o t 1.9 2 MT
. Thes e ca

n b e furthe r translate dint

o a n annualize dreductio n ofth e estimate dstandin g stoc

k (388,00 0 MT ; Jacobso n et al
. 1995 , 1997 ) of

<0.001%
. Thes e adult equivalent s ar

e assigne dth e averag e ag e of arecrui t ( 2 yr) , s o thi s annualize dreductio n necessaril y assume s tha

t all ofth e standin g stoc

k wa s 2 y r of age . Sinc e i

t i s likely tha

t the averag e ag e i

n th e standin g stock

i s somewha

t greate r tha n th e younges t

recruits , thi s percen

t reductio n i s likely a

n underestimat

e ofth e los s to the 2 yr

ol dcohor t presen t i n th e standin g stock
.

TENER A E9-055. 0 5-10 4 Fina l 316(b ) Demonstratio n Marc h 1.200 0P.2 2 5.2. 3 Norther n Anchov y
It i s noteworthy tha

t no t onl y ar e AEL estimate dlosse s simila

r t o P M -base dlosse s i

n norther n anchov y biomass , but

also , when estimate s ar e aligne dt o ag e 2 (Sectio n 4.43.1) , FH give s simila r results
. Assumin g alinea

r populatio n decline , a

n estimate daverag e ag e o f femal e anchovie s ( FH

) i s on e thir

dofth e ag e fro

mmaturit y t o longevity , 2.3 3 yr . Usin g anatura l mortalit y estimate o f

Z = 0.003 1 d" 1 , th e number s (AEL = 2FH= 89,400 ) an

dbiomas s los t

i s estimate da s 130,000 fish an d2.0 8 MT
. One metho do f

interpretin g populatio n los t t o entrainment

convert s thei r

estimate dweight

into dollar s usin g th e fisher

y valu e o f S288/MT reported i

n Lee t et al
. (1992)
. Th e predicte d

rm i , 1 equivalent adul t losse s usin g 2 MT woul dmen b e value da t $57 6 annually
. Another

approac h woul db e t o compar

e th e weigh

t o f equivalent

adult s (approximatel y 2 MT ) wid i that ofth e mos t recent catc h landedi

n th e Morr

o Ba y area , which wa s approximatel y 2 3 M T i n 1997 (Figur e 5.23-1) . [CDF& G record s include dn o norther n anchovy catch a

t eidier Morr o Ba y are apor t fo r eithe r 1995-9 6 o r

199 8 althoug h norther

n anchovy wer

e caugh t an dsol da s liv e bait

durin g thes e years]
. A fractiona

l compariso n o f

annua l AEL wit h th e 199 7 catc h statistic s indicate s that potential losse s a s aresul t

o f DCPP , conservativel y assumin g 100 % catchabilit y ofth e equivalen t adults , equale dapproximatel y 10 % ofth e 199 7 Morr o Ba y are acatch
. Aldioug h P M -base d result s produc e asimila

r proportio n o f

Morro Ba y are acatch , whe

n applie dt o di e populatio n fro mSa n Francisc o t o PuntaBaja , Mexico , th e los s i s insignificant , les s tha n 0.001%
. I

n addition , harvestin g parameter s such a s selectivity , catchability , an dfishin g effor

t indicat e tha t thi s estimate i s likel y conservativ e furthe r reducin g di e impac t

t o th e fishery
.

TENERA E9-055. 0 5-10 5 Fina l 316(b ) Demonstratio n Marc h 1.200 05.2. 3 Norther n Anchov y
Tabl e 5.2.3-1
. Estimate dtota l annual entrainmen t (E T ) o f norther n anchov y larva e a t th e DCP P intak e structur e fo r th e thre e analysi s period s wit h thei r standar derror s ( SE(E T ))
. Analysi s Perio dE T SE(E T

) 1 ) Oc t 23 , 1996-Sep30 , 199 7 26,600,00 0 1,510,00 0 2 ) Octl , 1997-Sep30,199 8 104,000,00 0 7,320,00 0 3 ) Ju l I,1997-Jun30 , 199 8 104,000,00 0 7,320,00 0

Tabl e 5.23-2 . Estimate dtota l annua l adjuste dentrainmen t (E Adj

_ T ) o f norther n anchov y larva e a t

th e DCP P intak e structur e fo r di e thre e analysi s period s with thei r standar derror s ( SE(E MJ

_ r )). Analysi s Perio dE AdJ

_ T SE(E AdJ

_ T ) 1 ) Oc t 23 , 1996-Sep30 , 199 7 136,000,00 0 7,690,00 0 2 ) Octl,1997-Sep30 , 199 8 376,000,00 0 26,500,00 0 3 ) Ju l I,1997-Jun30 , 199 8 377,000,00 0 26,500,00 0

TENER A E9-055. 0 5-10 6 Fina l 316(b ) Demonstratio n Marc h 1,200 0P.2 4 5.2. 3 Northe m Anchov y
Tabl e 5.23-3
. Survivorshi p o f norther n anchov y (Engraulis mordax): a ) Age-specifi c fecundit y schedul e (M x = natalit y rate ; L x = survivorship ) an db ) stage-specifi c life-histor y parameter s (Z=instantaneou s dail y mortality ; S=finit e surviva l rate ) modifie dfro mButle r e t al
. (1993)
. a )

b ) Ag e (yr )

1 2 3 4 5 6 7 M x

22,50 0 93,50 0 195,00 0 280,00 0 328,00 0 328,00 0 328,00 0 L x

1,00 0 46 8 21 6 10 2 4 8 2 2 1 0 M X L X

22,500,00 0 43,800,00 0 42,000,00 0 28,600,00 0 15,700,00 0 7,210,00 0 3,280,00 0

Stag e z bes t Stag e

duratio n (d ) Age(d ) Duratio n

modifie db y DCP P dat aSbes t

Earl y larv a Lat e larv a Earl y juvenil e Lat e Juvenil e Pre-recrui t 0.28 6

0.071 9 0.014 1 0.0044 0 0.0031 0 1 2

4 5 6 2 8 0 28 7 18. 5

63. 5 125. 5 205. 5 492. 5 9.4 4

4 5 6 2 8 0 28 7 Survivorshi p fro mentrainmen t t o recruitment : 0.00031 8 CVbes t Eg g 0.23 1 2. 9 2. 9 Yolk-sa c larv a0.36 6 3. 6 6. 5 3. 6 Earl y larv a0.28 6 1 2 18. 5 2.5 6

Survivorshi p fromeg g t o entrainment : 0.51 2 0.26 8 0.48 1 0.066 0 0.067 1 0.039 3 0.41 7 0.70 3 0.41 1 0.14 2

0.24 0 0.07 1 0.32 9 0.42 7 0.23 9 0.032 8 0.088 2

TENERA E9-055. 0 5-10 7 Fina l 316(b ) Demonstratio n Marc h 1.200 0P.2 5 5.2. 3 Norther n Anchov

y
Tabl e 5.23-4 . Estimate dnumbe r o f norther n anchov y adult female s (FH) whos e reproductiv e output

wa s equivalen

t to th e adjustednumbe

r o f larva e entraine dpe

r yea r ( E Adj

_ T ) a t Diabl o Canyon Powe

r Plan t includin g the standar

derro r ofth e estimat

e ( SE(FH) ) an

d90 % confidenc e limit s (C.L.)
. Analysi s Perio d Uppe r 90 % Lowe

r FH SE(FH) C.L
. 90 % C.L
. 1 ) Oct23 , 1996-Sep30 , 1997 16,10 0 57,300 5,630,00 0 4 6 2 ) Oct l,1997-Se P 30 , 199 8 3 ) Jul 1 , 1997-Jun30 , 199 8 44,70 0 159,00 0 15,600,00 0 128 44,70 0 159,00

0 15,600,00 0 12 8

Tabl e 5.23-5 . Norther

n anchovy (Engraulis mordax): Sensitivit y analysi s fo

r FH fro m th e thre e analysi s period s recalculate dfo r eac h mode l inpu t paramete r (ff): E

Adj , T ± 1.64 5 SE(ff) ; othe

r parameter s ar

e 0. e ±i-645CV0) wne r e CV( ff ) = 1. 0 or 100%
. a ) Analysi s Perio d1 : Octobe r 1 , 1996-Septembe

r 30 , 199 7
Paramete r FH = E ^•Aqj-T S egg S yolk-sac S larvae #Eggs/y r Longevit y Maturatio n Estimat e

16,10 0 136,000,00 0 0.51 2 0.26 8 0.48 1 102,00 0 4 1. 5 Minimu m

14,60 0 8,24 0 4,31 0 7,75 0 3,11 0 6,19 0 12,40 0 Recalculate dFH

Maximu m 17,60 0 83,40 0 83,40 0 83,40 0 83,40 0 32,20 0 40,30 0 Rang e

3,00 0 75,20 0 79,10 0 75,70 0 80,30 0 26,00 0 27,90 0

TENER A E9-055. 0 5-10 8 Fina l 316(b ) Demonstratio n Marc h 1,200 0P.2 6 5.2. 3 Northe m Anchov y
Tabl e 5.23- 5 (continued) . Norther n anchovy (Engraulis mordax): Sensitivit y analysi s fo r FH fro mth e thre e analysi s period s recalculate d fo r each mode

l inpu t parameter

(ff): E Adj

_ T ± 1.64 5 SE(ff) ; other

parameter s ar

e Q. e ±\MKV(0) w h e r e CV( ff) = 1. 0 o r 100%
. b ) Analysi s Perio d 2 : Octobe r 1 , 1997-September

30 , 199 8
Parameter TH 

### = pAdj-T S egg S yolk-sac S larvae #Eggs/y r Longevit y Maturation Estimate

= 44,60 0 376,000,00 0 0.51 2 0.26 8 0.48 1 102,00 0 4 1. 5 Minimum

39,50 0 22,80 0 12,00 0 21,50 0 8,62 0 17,20 0 34,30 0 Recalculate d FH

Maximum 49,80 0 231,00 0 231,00 0 231,00 0 231,00 0 89,30 0 112,00 0 Rang e

10,30 0 208,00 0 219,00 0 210,00 0 223,00 0 72,10 0 77,30 0

c ) Analysi s Perio

d 3 : Jul y 1,1997-Jun e 30, 199 8
Paramete r FH = E ^Adj-T S egg S yolk-sac S larvae #Eggs/y r Longevit y Maturatio n Estimate

• * 44,70 0 377,000,00 0 0.51 2 0.26 8 0.48 1 102,00 0 4 1. 5 Minimum

39,50 0 22,90 0 12,00 0 21,50 0 8,62 0 17,20 0 34,40 0 Recalculate d FH

Maximum 49,90 0 232,00 0 232,00 0 232,00 0 232,00 0 89,40 0 112,00 0 Rang e

10,30 0 209,00 0 220,00 0 210,00 0 223,00 0 72,20 0 77,30 0

TENERA E9-055. 0 5-10 9 Fina l 316(b ) Demonstratio n Marc h 1.200 0P.2 7 5.2. 3 Norther n Anchov y
Tabl e 5.23-6 . Estimate dnumbe r o f equivalen t norther n anchov y adult s (AEL) equa

l to the adjustednumbe

r o f larva e entraine dpe

r yea r (E Adj

_ T ) a t Diabl o Canyon Powe

r Plan t includin g th e standar

derro r ofth e estimat

e (SE(AEL)) an

d90 % confidenc e limit s (C.L.)
. Analysi s Perio d ^ Uppe r 90 % Lowe

r AEL SE(AEL) C.L
. 90 % C.L
. 1 ) Oct 23 , 1996-Sep30 , 199

7 2 ) Octl , 1997-Sep30 , 199 8 3 ) Jul 1 , 1997-Jun30 , 199 8 43,20 0 160,000 19,300,000 9 7 120,000 444,00 0 53,400,00 0 26 8 120,000 444,00 0 53,500,00 0 26 8

Tabl e 5.23-7 . Norther

n anchovy (Engraulis mordax): Sensitivit y analysi s o f

AEL fro m th e thre e analysi s period s recalculate dfo r each model inpu

t paramete r (ff): E

AdJ

_ T ± 1.64 5 SE(ff) ; othe

r parameter s ar

e ff. e ±x "WW wher e CV( ff ) = 1. 0 o r 100%
. a ) Analysi s Perio d1 : Octobe r 1 , 1996-Septembe

r 30 , 199 7

Paramete r AEL = PAJJ-T S early larvae S late larvae S early juvenile S juv. I S pre-recruit Estimat e

43,20 0 136,000,00 0 0.067 1 0.039 3 0.41 7 0.70 3 0.41 1 Minimu m

39,10 0 8,33 0 8,33 0 8,33 0 8,33 0 8,33 0 Recalculate dAEL

Maximu m 47,20 0 224,00 0 224,00 0 103,00 0 61,40 0 105,00 0 Rang e

8,05 0 215,00 0 215,00 0 95,10 0 53,00 0 96,80 0

TENER A E9-055. 0 5-11 0 Fina l 316(b ) Demonstratio n Marc h 1,200 0P.2 8 5.2. 3 Norther n Anchov y
Tabl e 5.23- 7 (continued) . Norther n anchovy (Engraulis mordax): Sensitivit y analysi s o f AEL fro mth e thre e analysi s period s recalculate dfo r eac h model input

parameter

(ff): P-Adj-r ± l- 64 ^ SEW) J other

parameter s ar

e ffe ±x M5Cy W wher e CV(ff)= 1.

0 or 100%
. b ) Analysi s Perio d2 : October 1 , 1997-September

30 , 199 8

Parameter AEL = E ^Adj-T S early larvae S late larvae S early juvenile S juv. J S pre-recruit Estimate

120,00 0 376,000,00 0 0.067 1 0.039 3 0.41 7 0.70 3 0.41 1 Minimu

m 106,000 23,10 0 23,10 0 23,10 0 23,10 0 23,10 0 Recalculate dAEL

Maximu m 134,000 620,00 0 620,00 0 287,00 0 170,000 291,00 0 Rang e

27,70 0 597,00 0 597,00 0 264,00 0 147,000 268,00 0

c ) Analysi s Perio d3 : Jul y 1 , 1997-Jun e 30,199 8

Parameter AEL = E ^Adj-T S early larvae S late larvae S early juvenile S juv. I S pre-recruit Estimat

e 120,00 0 377,000,00 0 0.067 1 0.039 3 0.41 7 0.70 3 0.41 1 Minimu

m 106,000 23,10 0 23,10 0 23,10 0 23,10 0 23,10 0 Recalculate dAEL

Maximu m 134,000 621,00 0 621,00 0 287,00 0 170,000 292,00 0 Rang e

27,70 0 598,00 0 598,00 0 264,00 0 147,000 269,00 0

TENERA E9-055. 0 5-11 1 Fina l 316(b ) Demonstratio n Marc h 1.200 0P.2 9 

# 1 I 5.2. 3 Norther n Anchov y

Tabl e 5.23-8 . Norther

n anchovy (Engraulis mordax): Monthly estimate s o f proportiona

l entrainmen

t (PE , ) , th e annua

l proportio n o f

larva e hatched i

n th e hh surve

y perio d {fj ), an

d thei r associate d standar

d error s (SE).
a ) Analysi s Perio d 3 : Jul y 1 , 1997-Jun e 30 , 199 8 Surve y Start

Dat e Ju l 21 , 199 7 Au g 25 , 199 7 Se p 29 , 199 7 Oc t 20 , 199 7 No v 17 , 199 7 De c 10 , 199 7 Ja n 22 , 199 8 Fe b 26 , 199 8 Ma r 18 , 199 8 Ap r 15 , 199 8 Ma y 18 , 199 8 Ju n 8 , 199 8 PE,

0.00031 0 0.00031 0 0.00073 0 0.00084 0 0.00027 0 0.00062 0 0.0018 6 0 0.00008 0 0.00038 0 0.00039 0 0.0014 8 SE{PE,)

0.000320 0.000310 0.000330 0.000320 0.00019 0 0.000260 0.00097 0 0 0.000040 0 0.000140 0.000080 0 0.000390 fi

0.0047 4 0.010 2 0.0082 2 0.0076 8 0.0057 4 0.023 8 0.46 8 0.0021 9 0.155 0.10 3 0.19 8 0.013 1 

### SP{f)

0.00073 0 0.00079 0 0.00087 0 0.0015 0 0.0016 9 0.0015 5 0.013 1 0.000310 0.0058 4 0.0041 2 0.0069 7 0.0010 1

b ) Analysi s Perio d 4 : July 1 , 1998-Jun e 30 , 199 9 Surve y Start

Dat e Ju l 21,199 8 Au g 26 , 199 8 Se p 16,199 8 Oc t 6 , 199 8 No v 11 , 199 8 De c 9 , 199 8 Jan 12 , 199 9 Fe b 3 , 199 9 Ma r 17 , 199 9 Ap r 14 , 199 9 May 24 , 199 9 Ju n 23 , 199 9 PE,

0.00040 0 0.001 0 0 0 0 0.000580 0.0020 0 0.010 2 0 0 0.0020 8 0 SE(PE,)

0.00021 0 0.00022 0 0 0 0 0.00059 0 0.0015 3 0.011 7 0 0 0.0015 6 0 /

0.17 0 0.43 1 0.0086 3 0 0 0.058 2 0.13 7 0.054 7 0 0 0.14 0 0 

### SP{f)

0.017 6 0.020 4 0.0035 3 0 0 0.010 3 0.017 5 0.0098 7 0 0 0.015 4 0

TENER A E9-055. 0 5-11 2 Fina l 316(b ) Demonstratio n Marc h 1,200 05.2. 3 Norther n Anchov y P.3 0 

# I I Norther n anchov y (Engrauli s mordax ) landing s i n th e Morr o Ba y Are a 4 0
_ 3 5
_

u « » 2 0
_ o S 15 - 5 1 0
_ 5
_ 0
_ 

# J Q Monr o Ba y • Por t Sa n Lui s 

# L

i n e n c n e

n rfm C O c n c n o

c o c n i n e o c n i* ~ e o c n c n e o c n c

n o > rt c n c n i n c n c n •*•« .

c n c n Years Figur e 5.23-1 . Commercia l landing s o f

norther n anchovy (Engraulis mordax) a t th e port s i

n th e Morro Ba y Are abetwee

n 197 5 and1997 (source : CDF& G Database)
.

TENERA E9-055. 0 5-11 3 Fina l 316(b ) Demonstratio n Marc h 1,200 0P.3 1 

# 1 i i t t 

# I i 

# i i 

# l i 

# I i I i 

# I I I i 5.2. 3 Norther n Anchov y

0.8 - 0.7 - U J 0 6 — •« - + 0.5 - n E *£ , 0.4 -DensityoI1I

C 0.2 - ( 0 0 ) ^ o, -

o.o Norther n anchovy
. (Engraulis

mordax)

.MKjlh..ll._....ltu* . .__l.-.-_.. v -.M..i_..fe... t ..J . •rt-r " |



# LJ ll-L. f • |o| N j o| J |F|M|A|M|J|J|A|S|O|N|O| J |F|M|A|M|J|J| A | 1SS6 | 1QS 7 | 109 8 •

Surve y Dat e

• designatessurveywithdensitys O r» i iv " s|o|N| o | J 1 i I iMiuiiyii i F|M | A 100 9 1 M | J 1 1

Figur e 5.23-2 . Weekl y mea n larva l density (#/m 3 + 1 S.E. ) a tth e DCP P intake .

TENER A E9-055. 0 5-11 4 Fina l 316(b ) Demonstratio n Marc h 1.200 05.2. 3 Norther n Anchov y

x 

# I o E .t o " 3 

### 8 C D 

## « 5 > O mZ. o c C O c < D J Z " C o \\\\\ \ \\\\

siromNoioo o NCAiww^^o'oei o 

## ,W/ # I o c < 3 xz a . © O C

A < B a > E 8 ! Cr ) £ "H i E 

### s I 1 

# 1 C O B < 5 E 

### s I 1 

# 1 c

o 

### 1 c j

_ o 0 0 c
c fi c u

" 3

u

- o • c 0 0 > • > ~o 3 c/ j C L 

### a . 

## u Q j u " o u E w '5 5 c < u

- o

< D

I/* ) 

### £ s e c t l TENERA E9-055. 0 5-11 5 Fina l 316(b ) Demonstratio n Marc h 1,200 0m

z m
m c o 

### 6 O l O l b

V O )

3 9 L w ea 

# § 1

- * t o M C O o cr . o o O 3 Norther n anchov y (Engraulis

mordax)

C O 

# E 2. 7

2. 4 2. 1 1. 8 1. 5 1. 2 0. 9 0. 6 0. 3 0. 0

Dept h Contour s

"" • 2 0 meter s »i » 4 0 meter s
• — • 6 0 meter s Poin t Bucho n

DCP P Intake

Poin t Sa n Lui s

Jan . 22 , '9 8 Feb . 26 , '9 8 Mar
. 18 , '9 8 Apr . 15 , "9 8 Ma y 18
. '9 8 Jun
. 8 , '9 8 Figur e 5.2.3-3 b (continued) . Mea n larva l densit y (#/m 3 ) collecte din th e DCP P study gri dcell s an da t di e entrainmen t

samplin g location
.m

z m m 

## S t n o r

V

3 S L G O 

# i i J 3

- » c n ro 5 o =* . o o o 3 Norther n anchov y (Engraulis mordax)



### c o 

# E 2. 7 2. 4 2. 1 1. 8 1. 5 1. 2 0. 9 0. 6 0. 3 0. 0

Dept h Contour

s

—— « 2 0 meter

s « — • 4 0 meter

s '•BB B 6 0 meter

s Poin t Bucho n

DCP P Intak

e

Poin t San Lui s

Jul
. 20 , '9 8 Aug
. 25
. '9 8 Sep
. 15 , '9 8 Oct
. 5
. '9 8 No v10 , '9 8 Dec
. 8 , '9 8 

### Figur e 5.2.3-3 c (continued) . Mea n larva l densit y (#/W ) collectedi

n th e DCP P stud y grid cell s an

d a t th e entrainmen

t sampling location
. o 3 " O

# m m

m z m m C O • o O l U l b



### S " o o

5' CO . C O C D § •g > 

# i i
J 3

- » w h o 5 3 O mt. o o O 3 Norther n anchov y (Engraulis mordax)

C O 

# E 2. 7 2. 4 2. 1 1. 8 1. 5 1. 2 0. 9 0. 6 0. 3 0. 0

Dept h Contour s H ' * 2 0 meter s

• — » 4 0 meter s ^^m 6 0 meter s Poin t Bucho n
DCP P Intak e

Poin t Sa n Lui s

Jan
. 11 , '9 9 Feb
. 2 , *9 9 Mar
. 16 , '9 9 Apr
. 13 , '9 9 Ma y 23 , '9 9 Ju n 22 , '9 9 Figur e 5.2.3-3 d (continued) . Mean larva l density (tf/m 1 ) collecte di n th e DCP P stud y gri dcell s an da t th e entrainmen t

samplin g location
. o

,,.£5.2. 3 Norther n Anchov y

Norther n anchov

y (Engraulis

mordax) N = 2,54 6

m 2 0 • O c 3 O U 

### 2 « • " o > » o c O J 3 c r g > 10 - c C D o C D Q . 1 %



# l l IIUMI|JIHI| I

4 . 0 e. s S. O 11 . S 14. 0 16. 5

Lengt h Categor

y (mm ) 

# IJmXI ' ' ' I 4 S 1 1 ' • • 1 • • • 1 • • • 1 • ' • 1 ' ' • 1 • • • 1 r-rn —

1 2 1 6 2 0 2 4 2 8 3 2 3 6 < * •* » Estimate d ag e (days

)
Figur e 5.2.3-4 . Lengt

h frequenc y o f

al l measure dlarva

l fis h collecte di

n th e entrainment samples
. Minimum , median , mean , maximum , an dcentra l 98 % ofth e larva

l length s ar

e noted
. X-axi s scal e i s no t

continuou s a

t large r lengths
.

TENER A E9-055. 0 5-11 9 Fina l 316(b ) Demonstratio n Marc h 1,200 0 

# I I 1 I I 

# i I i 

# i i i f i 

# i i i i i iP.3 7 

# 1 I 1 i i I f i 

# i 

# I i § 

# l I 1 5.2. 3 Norther n Anchov y

io— I

5 ~ O J U c CD 3 O O O Mi n Norther n anchov y (Engraulis

mordax)
Entrainment : N=12 1 MedianlMea n 1 %



# P 

# t 99 %

~ T ^
. . „_ _ 1. 0 3. 5 6. 0 8. 5 11. 0 13. 5 16. 0 18. 5 21. 0 23. 5 *<3&t



# n l Ma x



# IIUIIII l L U W.

>. « 10 " c C O 3 O " 0 J

c 0 J 5 " C J 0 J 0 . Grid : N=5,432

Mi n 1 % Media n Mea n 99 %



# X

- 

# Jllimii u Ma x



### UO f *¥* ^ * l! o a 5 6l o 8! 5 11. 0 13. 5 16. 0 18. 5 21. 0 23.5^$ £

Lengt h Categor

y (mm ) 

# I I I Figur e 5.2.3-5
. Lengt h frequency o f

measuredfis

h fro mentrainmen

t survey s tha

t paire dwit h gri dsurvey s (bot

h year s combined)
. Minimum , median , mean , maximum , an dcentra l 98 % ofth e larva l length s ar

e noted
. X-axi s scal e i s not

continuou s a

t large r lengths
. TENER A E9-055. 0 5-12 0 Fina l 316(b ) Demonstratio n Marc h 1,200 05.2. 3 Norther n Anchov yS.E.)MeanDensity(#/m3+/- 0.4 8 — 0.4 4 - r 0.40- E 0.36- = 0.3 2 ~ E 0.28- r 0.24- = 0.20- f 0.16~ = 0.12- =
0.0 4 -** = o.oo- E -0.04- = -0.0 8 — 1 Norther n anchov

y (Engraulis

mordax) 

## I

> • i

-

IIIII I 99 0 199 1 199 2 199 3 199 4 199 5 Yea r i

i 199 6 !

I 199 7 i

I

199 8

Figur e 5.23-6
. Annua

l mea n densit y +/

- 2 standar

derror s (vertica

l lines ) an dgran dmea

n densit y fo r all year s combine d(horizonta l line ) fo r th e Intake Cov e surfac e plankto n tows . Th e annua l mea n densitie s are base

do n seve n consecutiv e month s o f

data(Decembe

r throug h June ) excep t fo r 1990 , whic h ha

donl y five month s (Februar

y throug h June)
.

TENERA E9-055. 0 5-12 1 Fina l 316(b ) Demonstratio n Marc h 1,200 0 

# I I I s 

# 1 1 I I I I I i I f I § 

# i i i-r~~ P.3 9 

# I t 1 I 1 t I I 

# i I I I I I 5 I 5.2. 3 Norther n Anchov y
Norther n anchov y (Engraulis mordax) - mea n duratio n 0.10 - o.o s o.o e 0.0 7 o.oe j f o.o s - o.o* - 0.03 - 0.0 2 - 0.0 1 — o.oo Analysi s Perio d 3 : Ju l 1997-Ju n 199 8
Estimat e 90 % C.l
. Densit y Extrapolate d •=» • Pu = 0.00057 5 ±0.027 7

O x S x lO x 1S x 20 x 2B x SO x 3S x 40 x O k m 8 7 k m 17 4 k m 28 1 k m 34 7 k m 43 4 k m 82 1 k m BO S k m 80 S k m Six * o f Populatio n Relativ e t o Stud y Oli d Equivalen t Dlstano e Alongsnor e Norther n anchov y (Engraulis mordax) - mea n duratio n o.io o.oo o.oe o.or o.o e £ o.o e - 0.04 - 0.0 3 0.0 2 0.0 1 - o.oo Analysi s Perio d 4 : Ju l 1998-Ju n 199 9

Densit y Extrapolate d F> » Estimat e 90 % Cl
. P/ u = 0.0020 5 ± 0.073 0

2 S x SO x 4 3 4 k m 82 1 k m Siz e o r Populatio n Relativ e t o Stud y Gri d Equivalen t Distanc e Alongahor a SB x SO B k m 4 0 x

8 8 8 k m
Figure 5.23-7a . Tota

l annua l entrainmen

t mortalit y (P u ) and90 % confidenc e interva l (C.I. ) a s afunction o f

di e reciproca

l o f di e fraction ofth e populatio n a t risk an dcontaine din th e stud

y gri d (jp s ) use dt o approximat

e m e extent

ofth e stud

y gri dpopulatio n base don offshor e extrapolatio n o f stud y gri dabundanc e extende dalongshor e usin g bodi onshor

e an dalongshor

e current move ment s wimth e 90 % CI
. indicated
.
TENERA E9-055. 0 5-12 2 Fina l 316(b ) Demonstratio n Marc h 1,200 0P.4 0
5.2. 3 Norther n Anchov y
Northe m anchov y (Engraulis mordax) - maximu m duratio n Analysi s Perio d 3 : Ju l 1997-Ju n 199 8 Densit y Extrapolate d Ps

of f scal e MPs = 68 4 Pu = 0.000078 6 i 0.027 7

Estimat e 90 % C.l.

O x 8 x lO x 1B x 20 x 28 x SO x SS x 40 x O k m 8 7 k m 17 4 k m 28 1 k m 34 7 k m 43 4 k m S2 1 k m 80 8 k m 80 S k m Siz e o f Populatio n Relativ e t o Stud y Ort d Equivalen t Distanc e Alongahor e Norther n anchov y (Engraulis mordax) - maximu m duratio n 0.24 0 - 0.21 8 O.102 - 0.18 8 — 0.14 4 0.12 0 — O.OB8 - 0.07 2 ~ 0.04 8 0.02 4 — O.OO O — Analysi s Perio d 4 : Ju l 1998-Ju n 199 9 Densit y Extrapolate d P s of

f scal e MPs • 45 5 PM = 0.00020 1 ±0.073 0

Estimat e 90 % C.l
.

O x B x " I O x 10 x 20 x 2B x SO x SS x 40 x O k m 8 7 k m 17 4 k m 28 1 k m 34 7 k m 43 4 k m B2 1 k m 80 8 k m 80 6 k m Siz e o f Populatio n Relativ e t o Stud y Gri d Equivalen t Dlatano e Alongahor e Figur e 5.2.3-7b . Tota

l annua l entrainmentmortalit

y (P u ) and 90 % confidenc e interval (C.I. ) a s a functio n o f

m e reciprocal ofth e fraction ofth e populatio n a tris k an d containe d i n th e stud y gri d (jp s ) use d t o approximat

e th e exten tofth e stud y gri d populatio n base d o n offshor e extrapolatio n o f study gri d abundanc e extende d alongshor e usin g bot h onshor e an

d alongshor e curren

t movement s wit h di e 90 % CI . indicated .
TENER A E9-055. 0 5-12 3 Fina l 316(b ) Demonstratio n Marc h 1.200 0 

# I I i i i l 

# i i I i t 

# i I f I i I 9 1P.4 1
5.2. 3 Norther n Anchov y

23119 2 SqK m

10 0 0 10 0 20 0 Kilometer s


### Figur e 5.23-8
. PFM

C managemen

t are acontaining th e spawnin g biomas s ofth e centra

l subpopulation ofth e northe

manchovy
.
TENER A E9-055. 0 5-12 4 Fina l 316(b ) Demonstratio n Marc h 1,200 0P.4 2



# Blan k Pag eP.4 3 5.2. 4 Rockfishe s 

### 5.2.4 Assessment

of Target Taxa in the Family Scorpaenidae Rockfishe s (Sebastes spp. ) belong to th e famil y Scorpaenida

e tha t contain s tw o othe

r genera : th e scorpionfishe s (Scorpaena spp. ) an dth e thornyhead s (Sebastolobus spp.)
. Scorpaenida e compris e th e larges t numbe r o f commercially an

drecreationally importan

t Californi amarine fis

h species
. They are als o abundan

t i n nearshor e Californi ahabitat s an

dpla y importan

t trophi c an

decologica

l role s i n thes e communities
. The

y compris e alarg e componen t ofth e shallo w subtida

l fis h community , rangin g fro

mnearshor

e coasta l habitat s (e.g. , kelp forests ) t o th e continenta l shelf
. Adult Californi ascorpionfis h (Scorpaena guttata) ar e reporte da s fa

r nort h a s Sant aCruz , California , but

adult s are mos t

common i n water s sout

h o f Poin t Conceptio n wher

e the y are a

n importan t componen

t ofth e spor

t an dcommercia

l catch betwee

n Sant aMonic aBa

y an dSa n Diego , Californi a(Leet

e t al
. 1992 ; Lov e 1996)
. N o Californi ascorpionfis h larva e wer e entraine d a t DCP P durin g di e study
. Commercia l landing s o f

rockfishe s (Sebastes spp. ) hav e historicall y include dfishe s i

n th e genu s Sebastolobus (thornyheads ) represente dby tw o species : th e shortspin e thornyhea

d(Sebastolobus alascanus) an dth e longspine thornyhea

d(S. altivelis). Until recentl y (mid-1980's) , mos t rockfishe s an

dthornyhead s wer

e landedtogether

i n asingl e marke

t category , bu

t the y no w ar e reporte dseparately (Star

r et al
. 1998)
. Fe

w thornyhead s wer

e entraine ddurin g th e stud

y a t DCP P (Appendix H) . Th e rockfishe s (Sebastes spp. ) ar e th e mos t divers e genu s i

n th e Scorpaenida

e wit h som e 6 2 specie s reporte dfro

mCaliforni acoasta

l water s (Star r et al
. 1998) , approximately 85 % o f which ar e harveste di

n Californi acommercia

l or spor t fisheries
. Reproductiv e capacit

y o f rockfishe s i s directly relate dto size , wit h large r female s carryin g significantly mor

e egg s tha n smalle r females
. Rockfishe s ar

e viviparou s wit

h interna l fertilizatio n (Yoklavich et

al
. 1996) , an

dth e female retain s the egg s unti l sh e extrude s hundred s t o million s (e.g. , Sebastes paucispinis; Mose r 1967 ) o f eyed , liv e larva

e (Bloese r 1999)
. The larva

e an d juvenile s ca

n remain i n the plankton fro

m1 m o to approximately 1 y

r befor e settlin g int

o primarily benthi c habitat s a s juvenile s (Matares e et al
. 1989 ; Mose

r 1996 ; Star

r et al
. 1998)
. Thi s extende dplanktoni c perio dmake s environmenta l variatio n a

n importan

t determinan

t ofth e

TENER A E9-055. 0 5-12 5 Fina l 316(b ) Demonstratio n Marc h 1,200 0P.4 4 5.2. 4 Rockfishe s populatio n abundanc e o f

many rockfis h specie s sinc e thei r vulnerabl e lif

e stage s ar e expose dt o potentiall y advers e condition s fo r greate r period s o f

time
. Onc e o

n th e bottom , individual s o f man y specie s migrate t o deepe r wate r a s the y mature . Man y rockfis h specie s ar

e closel y related , an

dth e larva

e shar e man y morphologica

l an dmeristi c characteristics , makin g i

t difficult t o visuall y identif

y th e individua

l larva e t o specie s (Mose

r et al
. 1977 ; Mose

r an dAhlstro m1978 ; Barusko v 1981 ; Kendall an dLenar z 1987 ; Moren o 1993 ; Nishimoto i

n prep.)
. T o standardiz e th e identificatio n o f Sebastes spp . larvae , w e collaborate d wit h Mar y Nishimoto a

t th e Universit

y o f Californi aa

t SantaBarbarai

n developin g asystemo f groupin g rockfis h larva

e b y pigmen t character s (Tabl e 5.2.4-1 ; Nishimoto i n prep.)
. Using thi s systemth e tw o mos t abundan t pigmen t grouping s entraine da

t DCP P (Sebastes spp . V_D e an dSebastes spp . V ) wer

e geneticall y identifie dt o determin e di e specie s compositio n o f each propose dpigmen

t groupin g (Vetter

an dStannar d1999 ; Appendix J) . Result s fro mthes e analyse s indicate dtha

t th e specie s containe di

n th e Sebastes spp . V_D e groupin g (brown , gopher , copper , calico , andgras s rockfishes ) wer e geneticall y indistinguishabl e fro mth e specie s containe di

n th e Sebastes spp . V_D

_groupin g (kelp , black-and-yellow , quillback , China , and halfbanded)
. Therefore , thes e tw o group s wer e combine dinto asingl e complex calle dth e Sebastes spp . KG

B Complex
. Thi s complex ha s historicall y bee n use dt o describ e indistinguishabl e young-of-the-yea r (YOY ) kel

p fores t rockfishe s though

t to b e either

kel p (K) , gophe r (G) , or black-and-yello w (B ) rockfishe s i n subtida l survey s (Davi dVenTresca , CDF&G , Monterey , CA , pers . comm.)
. Result s ofth e geneti c analyse s o n th e Sebastes spp . V groupin g indicate dtha

t more tha n hal f o f th e larvae selecte dfo

r analysi s wer

e blu e rockfis h (Sebastes mystinus) leadin g t o th e promotio n o f blu e rockfis h fro

mthei r origina l pigmen t groupin g o f Sebastes spp . Vd

p t o th e Sebastes spp . V grou p an dt o th e subsequen

t designatio n of asecond complex , th e Blu e Rockfish Complex , usedi n thi s repor

t t o describ e th e Sebastes spp . V / S. mystinus pigmen

t grouping
.

TENER A E9-055. 0 5-12 6 Fina l 316(b ) Demonstratio n Marc h 1,200 0P.4 5 5.2. 4 Rockfishe s 

### 5.2.4. 1 KG B Comple

x (Sebastes

spp . V_D e & V_D J The larva l rockfishe s tha

t compris e th e KG

B complex shar

e pigmen t characteristic s tha

t mak e individua l larva e difficul t t o identif y t o specie s (e.g. , V_D e an dV__D_ ; Tabl e 5.2.4-1) . Th e primar y pigmen t character s distinguishin g thi s groupin g fro mother rockfis h larva

e ar e along ventra l serie s (V_) , either

along or developin g dorsa

l serie s (D

_or

De , respectively) , an

dlac k o f pectora l pigmentation
. Fishe s tha

t ar e classifie dint

o thes e pigmen

t grouping s als o appea

r t o b e geneticall y simila

r (Vetter an dStannar d1999 ; Appendix J) . Sinc e mos t ofth e specie s i

n thi s complex hav e simila

r lif e historie s an

dshar e th e sam e adult habitats , th e KG

B complex ca

n b e considere daguildo f

nearshore , benthic , or

epi-benthi c rockfishe s sharin g simila r ecologica l role s tha t for mabasi s fo

r their combinatio n int

o thi s complex abov e an

dbeyon dth e morphometri c an

dmeristi c similaritie s o f

thei r larva l forms
.

Sebastes atrovirens (Jorda n an dGilber t 1880) ; kel

p rockfish ; lengt

h t o 4 2 cm ; Timbe r Cove , norther

n Californi at o PuntaSa n Pablo , centra

l Baj a California ; inshor

e t o 4 6 m ; olive-brown to gra y brown , wit

h darke r brow n mottling , sometime s pinkis h belo w (Mille r an dLe a1972 ; Eschmeye

r et al
. 1983)
. Th e kel p rockfis h i s typicall y foun dnea r th e botto mi n kel p bed s or among the canopy blade s livin g i n rock y area s o f nearshor e water s (commo

n a t 1 0 m ; Mose

r 1996)
. While they ma

y occasionall y mov e int

o deepe r wate r durin g storm s (Lov e 1996) , the y generally demonstrat e high sit e fidelit y throughout

adult lif e (Mille r an dGeibe l 1973 ; Leae

t al
. 1999)
. Principa

l foo ditem s ar e crustacean s an

d juvenil e fishes , wit

h som e o f thos e being othe

r rockfish juvenile s (Le ae

t al
. 1999)
.

TENERA E9-055. 0 5-12 7 Fina l 316(b ) Demonstratio n Marc h 1,200 0P.4 6 5.2. 4 Rockfishe s
Kel p rockfis h ar

e importan

ti n bot h recreationa

l an d commercial fisheries . Recreational fisherme n regularl y take kel p rockfis h o n hook-and-lin e i n an d aroun d kel p beds , an

d spor tdiver s can easil y spea r them becaus e o f thei r docil e natur

e (Lov e 1996 ; Lea e tal . 1999) . Commercially , thi s specie s i s harveste d o n hook-and-line , i n traps , an

d i n gil l nets (Lov e 1996) . Man y o f the m ar e sol d a s whol e fish , sometime s live , i n fis h market

s (Lee te tal . 1992 ; Star

r e tal . 1998 ; Bloese r 1999) . Fo r th e port

s i n th e Montere y Ba y Nationa l Marine Sanctuar y (MBNMS ) an

d Sa n Francisco , kel p rockfis h landing s hav e increase d markedly i n th e las tte n years , wit

h landing s exceedin g 14,50 0 M T in 1995 . Thi s equal s a n estimate d averag e numbe r offis h taken per yea r fo r th e perio d 1980-199 5 o f 24,27 0 (Star

r etal . 1998) . Kel p rockfis h fecundit

y range s fro

m 34 4 t o 40 3 eggs/ g (femal e bod y weight) , an d spawnin g occur s onc e durin g late winte r t o sprin g (MacGrego r 1970 ; Lov e e tal . 1990 ; Mose r 1996) . Th e reproductiv e perio d lasts about7 m o (Le a e tal . 1999 ) an d parturition occur s in Apri l an d Ma y (Moren o 1993) . Larva

l kel p rockfis h ar

e extrude d a

taroun d 4. 0 m m (Mose r 1996) . Young-ofthe-yea r (YOY ) firs tappear under nearshore kel p canopie s from July through Augus tan d then a s schoolin g fis h in th e wate r colum n from Augus tthroug h October . Length s o f

YO Y range fro

m 2 0 t o 4 0 m m total lengt

h (TL ; Le a e tal . 1999) . Longevit y fo r th e kel p rockfis h i s estimate d a t15-2 0 y r (Burg e an

d Schultz 1973 ; Le a e tal . 1999 ; Ralp h Larson , CS U Sa n Francisco , pers . comm.) . Thes e age s ar e validate d fo r fis h u

p t o abou t5 y r an

d assume d t o b e accurat

e fo r olde r fis h (Le a e tal . 1999) . Th e smalles tsexuall y matur e mal e wa s 24 6 m

m T L a t4 yr , an d th e larges timmatur

e mal e wa s 33 8 m

m T L (no taged ; Le a e tal . 1999) . Th e smalles tsexuall y matur e femal e wa s 21 8 m

m TL a t5 yr , an d th e larges t immature femal e wa s 32 0 m m T L a t7 y r (Le a e tal . 1999) . Female s attain 50 % maturit y a t4- 5 y r an d 100 % maturit

y a t6- 7 y r (Bloese r 1999) .

TENER A E9-055. 0 5-12 8 Fina l 316(b ) Demonstratio n Marc h 1,200 0P.4 7 5.2. 4 Rockfishe s

Sebastes camatus (Jorda

n an dGilber t 1880) ; gophe

r rockfish ; lengt

h t o 3 0 cm ; Eureka , norther

n Californi ato Sa

n Roque , centra

l Baj aCalifornia ; inshor

e to 5 5 m ; brownis h t o olive , mottle dwit h pal e areas , flesh-colore dto slightl y whitis h area s o

n bac k (Miller an dLe a1972 ; Eschmeye

r et al
. 1983)
. Gophe r rockfis h ar

e benthi c a s adults , ofte

n foun di n crevice s dow

n t o 5 5 mdept

h (Mose r 1996)
. They appea

r t o b e ver y residentia

l (Le aet al
. 1999) , bu

t other evidenc e show s tha

t the y occasionall y mov e ove

r shor t distance s t o inhabit

artificia l reef s (Matthew s 1986)
. Small fis h ea t zooplankto n an

dlarge r fis h ea t benthi c item s lik

e crustaceans , fishe s (u

p t o 80 % YO

Y rockfishes) , an

doctop i (Lov e 1996 ; Le ae t al
. 1999)
. Gophe r rockfis h have bot

h recreationa

l an dcommercia

l fisher y value
. Recreationa

l an d commercia

l fisherme n typicall y tak

e gophe r rockfish o n hook-and-lin e whil e fishing fo r othe r specie s (Lov e 1996)
. Man

y o f the mar e sol dwhole , sometime s live , i n fis h market s (Lee t

et al
. 1992 ; Star r e t al
. 1998 ; Bloese

r 1999)
. Fo r th e MBNM S port s an

dSa n Francisco , th e gophe

r rockfis h ha s show

n variabl e landing s ove

r th e pas t tw o decades
. Landing s exceede d100,000 M T fro m1980-81 , decline dt o almos t negligibl e landing s by 1991 , an dthen rapidl y increase dt o greater tha n 118,200 M

T i n 1992
. B y 1995 , landing s exceeded136,40 0 M T (Star r e t al
. 1998 ) possibly reflectin g th e increase deffor t i n th e live-fis h fisher

y (Bloese r 1999)
. A n estimate d averag e numbe

r o f gophe r rockfis h taken i

n recreationa

l fisherie s pe

r yea r fo r th e perio d1980

— 199 5 wa s 95,20 0 (Star

r et al
. 1998)
. Gophe r rockfis h fecundit

y range s fro

m176-30 7 eggs/

g female weight , an

dspawnin g occur s onc e pe r seaso n i n sprin g (MacGrego

r 1970 ; Wylli e Echeverri a1987 ; Mose r 1996)
. The reproductiv e perio dlast s 1 0 m o (Le ae t al
. 1999) , an

dparturitio n occur s i

n March-Ma

y (Moren o 1993)
. Planktoni c duratio n i s approximately 2- 3 m o (Larson 1980)
. Metamorphosin g juvenile s
TENER A E9-055. 0 5-129 Fina l 316(b ) Demonstratio n Marc h 1,200 0P.4 8 5.2. 4 Rockfishe s
firstappear i

n nearshore habitat

s i n mid - t o late-Jun e (Larso n 1980) . YO Y firs tappear associate d wit h nearshore reef

s i n Jul y an d Augus ta

t2 0 t o 4 0 m

m T L (Le a etal . 1999) . Longevity fo r th e gophe r rockfish-wa s estimate d a t2 4 y r (Le a e tal . 1999) . Ag e estimate s wer e validate d fo r fis h u

p t o abou t5 y r an

d assume d t o b e accurat

e fo r olde r fis h (Le a e tal . 1999) . Th e 2 4 y r ol d (31 6 m

m TL ) tagge d fis h reported b y Le a e tal . (1999 ) gre w onl y 4 m m in nearl y 1 1 year s betwee n capture dates . A 1 5 y r ol d tagge d fis h (28 2 m m TL ) gre w 1 0 m

m TL i n 6. 7 y r betwee n captur

e date s (Le a e tal . 1999) . Th e smalles tsexuall y matur e mal e i n thei r stud y wa s 23 7 m m TL a t1 0 yr , an

d th e larges timmatur

e mal e wa s 23 7 m

m T L a t1 0 y r (Le a e tal . 1999) . Th e smalles tsexuall y matur

e femal e wa s 20 7 m

m T L (no taged) , an

d th e larges timmatur

e femal e wa s 30 6 m

m T L a t9 y r (Le a e tal . 1999) . Female s are estimate d t o attain 50 % maturit y a t4 y r (Wylli e Echeverri a 1987 ; Bloese r 1999) .

Sebastes chrysomelas (Jorda n an d Gilbert1881) ; black-and-yello w rockfish ; lengt h t o 3 9 cm ; Eureka , norther n Californi a t o Isl a Natividad , centra l Baj a Califomia ; intertida l t o 3 7 m ; mostl y blackis h o r olive-brown , wit h larg e irregular yello w areas o n back , pale r belo w (Mille r an d Lea 1972 ; Eschmeye r e tal . 1983) . Black-and-yello w rockfis h typicall y inhabi thole s an d crevice s in rocky areas an d can b e foun d u p into th e intertida

l zon e (Eschmeye r e tal . 1983) . The y appear t o b e very residential (Le a e tal . 1999) , an d short-rang e homin g has bee n demonstrate d (Hallache r 1984) . Benthi c organism s compris e a majorit

y ofth e die twith crustacean s makin g up th e larges tproportion (89% ; Le a e tal . 1999) . Ofth e rockfishe s studie d b y Le a e tal . (1999) , black-and-yello w rockfis h exhibite d th e greates tdiversity o f

prey items . TENER A E9-055. 0 5-13 0 Fina l 316(b ) Demonstratio n Marc h 1,200 0P.4 9 5.2. 4 Rockfishe s Black-and-yello w rockfis h ar e importan t to bot h recreationa

l an dcommercia

l fisheries
. Recreationa

l an dcommercia

l fisherme n typicall y take black-and-yello w rockfis h o n hook-and

line whil e fishing fo

r other specie s (Lov e 1996)
. Man

y o f the mar e soldwhole , sometime s live , i n fish market s (Lee

t et al
. 1992 ; Star

r e t al
. 1998 ; Bloese

r 1999)
. Fo r th e MBNM S port s an

dSa n Francisco , th e commercia

l landing s fo

r black-and-yello w rockfis h increasedfro mno landing s betwee n 1980 an d199 1 (excep t

198 7 wher

e 30. 8 M T wer e landed ) t o greate

r tha n 24. 5 M T by 199 5 (Star r e t al
. 1998)
. Thi s increas e ma y reflect th e increasin g effor

t directe da

t th e live-fis h fisher y alon g th e Californi acoas t (Bloese r 1999)
. Th e estimate daverag e numbe r o f black-and

yello w rockfish take

n annuall y i

n th e norther

n Californi aspor

t fisher y durin g th e perio d1980

— 199 5 wa s 24,86 0 (Star

r e t al
. 1998)
. Parturitio n timin g an

dearl y developmen

t o f black-and-yello w rockfis h i s simila r t o tha t o f othe r specie s i n th e KG B complex
. Black-and-yello w rockfis h spawn betwee n Februar y an dMa y (Larso n 1980 ; Wylli e Echeverri a1987) , an dlarva e ar e release dannually (Le aet al
. 1999)
. YO

Y hav e bee n observe di

n kel p bed s i n Jul y an dAugus t a t ca . 2 0 t o 3 0 m

mT L (Le aet al
. 1999)
. Longevit y fo r th e black-and-yello w rockfish wa s estimate da t 2 1 y r (Le aet al
. 1999)
. Ag e estimate s wer

e validate dfo

r fish u p t o abou t 5 y r an dassumedt o b e accurat

e fo r olde r fish (Le a e t al
. 1999)
. Highes t

assigne dag e wa s 1 5 y r

a t 25 2 m mT L by Burg e an

dSchult z (1973)
. Th e smalles t sexually matur

e mal e wa s 239m

mT L a t 4 yr , whil e th e larges t

immatur e male wa s 30 1 m mT L a t 9 yr (Le ae t al
. 1999)
. The smalles t

sexually matur

e female wa s 24 3 m

mT L a t 6 yr an d th e larges t immatur e femal e wa s 27 0 m

mT L a t 7 yr (Le aet al
. 1999)
. Female s ar

e estimate dto attai n 50 % maturit

y a t 3 y r and100 % maturit

y a t 4 y r (Wylli e Echeverri a1987 ; Bloese r 1999)
. Other members

ofthe KGB complex Most member s ofth e KG

B complex dwel

l o n or nea r th e bottomo f

nearshor e kel p bed s an d rock y reef s wit h pea k abundanc e foun

da t les s tha n 5 0 t o 10 0 mdept h (Lov e 1996)
. Th e notabl e exceptio n t o thi s distributio n i s th e halfbande drockfish (Sebastes semicinctus), whic h i s commonl y observe do

n har dan dsoft, flat botto mhabita t i n water s u p t o 40 2 mdee

p (Miller an d

TENER A E9-055. 0 - 5-13 1 Fina l 316(b ) Demonstratio n Marc h 1,200 0P.5 0 5.2. 4 Rockfishe s
Le a 1972 ; Eschmeye r etal . 1983 ; Lov e 1996) . Geographi c range s fo r al l member s o f thi s group begi n of f centra l Baj a California , Mexico , wit h th e exceptio n o f

quillbac k an

d China rockfishe s (Mille r an

d Le a 1972 ; Eschmeye r e tal . 1983 ; Lov e 1996) . Thes e latte r tw o specie s begi n thei r distributio n near Sa

n Migue l Island of

f souther n Californi a (Mille r an

d Le a 1972 ; Eschmeye r e t al . 1983 ; Lov e 1996) . Th e norther n distributio n o f

thi s group range s fro

m Montere y Ba y an

d Sa n Francisco , Californi a fo r halfbanded an d calico , an

d t o th e norther

n Gul f o f Alask a fo r brown , copper , an

d Chin a rockfishe s (Mille r an d Le a 1972 ; Eschmeye r e tal . 1983 ; Lov e 1996) . Fishe s wit h th e mos tnortherly distribution s i n thi s grou p typicall y attain th e greates ttota l length s an

d age s fo r th e complex . Brown , copper , quillback , an d gras s rockfishe s ca n attai n maximum length s o f

>5 0 c m (Mille r an

d Le a 1972 ; Eschmeye r e tal . 1983) . Thi s i s als o true fo r estimate d longevity . Coppe r an

d quillbac k rockfishe s ma y reac h 4 1 y r an

d 7 6 yr , respectively , i

n th e Canadian fishery (Yamanaka an d Kronlun

d 1997) . Th e smalles tan d shortes tlivin g rockfis h o f thi s grou p i s th e calic o rockfis h diatattain s a total lengt h o f 2 5 cm an

d ha s a n estimate d longevity o f abou t1 2 y r (Che n 1971 ; Mille r an d Le a 1972 ; Eschmeye r e tal . 1983) . Th e calic o rockfis h als o ha s th e lowes tfecundit

y recorded i

n th e KGB comple x a

tabout2,00 0 egg s per femal e a t50 % maturit y bu trangin g t o a s hig h a s 113,00 0 egg s per femal e (Haldorso n an d Lov e 1991) . Th e mos t fecun d rockfis h fro

m thi s group i s th e gras s rockfis h wit h abou t760,00 0 egg s fo r a 2 6 c m femal e (Lov e an d Johnso n 1999) . Th e highes tag e rang e a t50 % maturit

y i s 6-1 1 y r fo r quillbac k rockfis h (Wylli e Echeverri a 1987 ; Yamanaka an d Kronlun

d 1997) . Littl e i s know n aboutth e planktoni c duration o r natura l mortalit y ofth e fish i

n th e KGB complex . Planktoni c duration wa s estimate d fo r brown , calico , an d gophe r rockfishe s a

tabout3 mo , 1- 2 mo , an d 2- 3 mo , respectivel y (Larso n 1980 ; Mose r an d Butle r 1981 ; Matares e e tal . 1989 ; D . Woodbury , NOAA , Tiburon Laboratories , pers . comm.) . Ther e ar e n o publishe d estimate s o f eg g o r larva l survivorshi p fo r th e specie s i n th e KGB complex . Th e KG B comple x forme d a larg e par tofth e rockfis h number

s in bot h th e larva

l entrainment survey s (Appendi x H ) an d subtida l fis h survey s (Tenera 1997c ) alon g th e Diabl o Canyo n coastline . However , compare d t o th e overal l rockfis h catch in California , whic h i s comprise d o f bot h nearshore an

d offshor e species , th e KG B comple x i s a relativel y minor , bu tincreasing , TENERA E9-055. 0 - 5-13 2 Fina l 316(b ) Demonstratio n Marc h 1.200 0P.5 1 

# 1 1 1 1 I 1
1 i 1

ra 5.2. 4 RocCtfoshe s

componen t (Leet et al
. 1992 ; Star

r e t al
. 1998 ; Bloese

r 1999)
. Nearl y all member s ofth e KG B complex , excep t

fo r halfbandedrockfish , ar

e component s ofth e live-fis h fisher y tha t target s nearshor e habitat s (Leet

e t al
. 1992 ; Star

r et al
. 1998 ; Bloeser

1999)
. Brow

n rockfis h landing s average dca . 134 MT fro

m197 9 t o 1986 , or

2-4 % ofth e tota

l recreationa

l rockfis h catch i

n Californi a(Leet

et al
. 1992 ; Star

r et al
. 1998)
. Th e coppe

r rockfis h ha s followedasimila r trenda t about 2-3 % ofth e recreationa

l rockfis h landing s (Lee t

e t al
. 1992 ; Star

r et al
. 1998)
. Th e averag e numbe r o f brown an dcoppe r rockfishe s landedpe

r yea r a t MBNM S port s an

dSa n Francisc o ove r th e perio d1980-199 5 wa s 160,67 0 an d106,390 , respectivel y (Star r e t al
. 1998)
. Th e only KG B complex specie s liste dby Bloese r (1999 ) withi n th e to p ten rockfishe s landedo n trollin g gea r i n 199 7 wa s th e Chin arockfish , whic h ranke dninth
. Similarly , th e only KG B complex specie s liste dwithi n th e to p ten rockfishe s landedi n 1997 usin g hook-and-lin e gea r wa s di e gopher rockfish , which als o ranke dninth
. However , i n mi s latter

gea r category , unspecifie d rockfishe s ranke dhighest
. In contrast , n o KG B comple x member s wer

e liste di n th e to p te n trawl

- | caugh

t rockfis h landing s tha

t made up 88 % o f

di e wes t coas t landing s i n 1997
. I n 1997 , th e averag e pric e fo

r rockfis h fromcommercia

l landing s wa s varie db y gea r typ e wit h di e lowes t valu e ($0.93/kg ) attribute dt o traw l gea r anddi e highes t

($3.15/kg ) frompot s an

dtrap s (Bloeser 1999)
. Th e KG

B rockfishe s tha

t ranke di n th e to p te n landing s at

Monr o Bay , Californi ai

n 1997 8 1 wer

e gras s (2) , gopher

(6) , an dblack-and-yello w (8 ) rockfishe s (rank s given i n parentheses ; mBloeser

1999)
. Th e averag e pric e i n 199 9 fo r al l KG B comple x rockfishe s landedi n th e Morro TM Ba

y are a(black-and-yellow , brown , China , copper , gopher , grass , andkelp ) wa s $7.65/k g (Source : PSMF

C Database)
. Summary

of Field Collections Larva l rockfishe s i

n th e KG B complex showeddistinc t seasona l peak s o f abundanc e a

t th e DCP P intak e structure durin g th e year s 1996-199 9 (Appeimdli x H) , wit h thei r greates t abundanc e tendin g t o occur

between March an

dJul y (Fignar

e 5.2.4-1)
. Ther

e wer e 17,86 3 larva

l KG B rockfishe s identifie dfro

m77 4 bong o net

subsample s collecte da

t th e DCP P intak e structure betwee n October 199 6 andJun e 199 9 representin g 20 % ofth e entrainmen t subsample s collecte d an dprocesse ddurin g tha

t period
. A n E l Nin o bega

n developin g durin g th e sprin g o f 1997
TENERA E9-055. 0 5-13 3 Fina l 316(b ) Demonstratio n Marc h 1,200 0P.5 2 5.2. 4 Rockfishe s (NOA A 1999 ) an

dwa s detecte dalon g th e coas t o f Californi ai

n fal l o f tha t yea r (Lyn n et al
. 1998)
. Thi s ma

y hav e affecteddensit

y i n 199 7 compare dwit

h th e previou s year . Thi s war m water event ma y als o hav e delaye dspawnin g slightl y durin g di e 1997-9 8 spawnin g seaso n (Woodbur y an dRalsto n 1991)
. Larva l KG B rockfishe s generall y occurre di n th e DCPP stud

y gri dwid i simila r seasonalit y t o diat observe da

t th e DCP P intak e structure (Appendix H ) wit h pea k abundanc e occurrin g i

n Ma y o f bot h 199 8 an d199 9 (Figure 5.2.4-2) . Ther e wer e 5,37 7 KG

B rockfis h larva

e identifie dfro

m70 1 bong o net subsample s representin g 23 % ofth e stud y gri dsubsample s collecte dan dprocesse d fro mJul y 1997-Jun e 1999
. Mea n densit y i n Ma y o f eac h samplin g yea

r wa s ver y simila r (Ma y 1998 : 0.29/m 3 ; Ma

y 1999 : 0.28/m 3 ) , indicatin g littl e chang e i n abundanc e betwee n th e E l Nifi o an dsubsequent

L aNin aseason . Standar dlength s o f

al l measure dKG

B rockfis h larvae collecte da t th e DCP P intak e structure between October

199 6 andJun e 199 9 (9,92 6 larvae ) range dfrom aminimu mo f 2. 4 m mt o a maximumo f

8. 0 m m(Figur e 5.2.4-3)
. Th e centra l 98 % o f thi s length-frequenc y distributio n resulte di n minimumandmaximumlength s fo r di e analyse s o f

3. 3 m man d5. 6 mm , respectively
. Th e mea n larva l lengt h i n thi s distributio n wa s 4. 2 mm . Th e growt h rate applie dt o th e KG

B comple x (0.1 4 mm/d ) derive dfromYoklavic h e t al
. (1996 ) wa s usedt o estimate age s o f entraine dlarvae
. Assumin g dia t di e shortes t

larvae ofth e centra

l 98 % o f di e length-frequenc y distributio n wa s immediatel y post-extrusio n an dage dzer o days , then th e estimate dage s o f larvae entraine dcoul drang e fro

mzer o u p t o ca . 3 4 dpost-extrusio n fo r th e larges t

larv ameasured
. Th e averag e estimate dag e o f

KG B larva e entraine da

t DCP P wa s estimate da s 6 dpost-extrusion
. Ther e wer e significant

difference s betwee

n mea n length s (/-test : p < 0.004 ) an dbetween length

frequenc y distribution s (Kolmogorov-Smirno v test : p < 0.001 ) o f larva l KG B rockfishe s fro

mth e DCP P intak e structure an

dstud y gri ddespite di e appearanc e o f similarit y between th e tw o unimoda l distribution s (Figur e 5.2.4-4)
. Th e larg e sampl e siz e (1,28 2 larva e fromth e intak

e structure and2,85 0 larvae fro mth e stud

y grid ) coul dcaus e th e /-tes t t o b e highly sensitiv e t o small difference s between th e mean s (Za r 1984)
. Th e mea

n standar dlength s fro

mth e intak

e
TENERA E9-055. 0 5-13 4 Fina l 316(b ) Demonstratio n Marc h 1,200 0P.5 3 5.2. 4 Rockfishe s
structur e an dstud y gri dwer e 4. 2 m man d4. 1 mm , respectively
. Th e maximu mdifferenc e betwee n th e length-frequenc y distribution s detecte dby th e Kolmogorov-Smirno v goodnes s o f fi t •tes t occurre da

t 4. 1 mm , furthe

r indicatin g tha

t agreate r numbe r o f smal l individual s wer

e ' collecte dfro

mth e stud

y grid
. While thes e difference s wer e statisticall y detectabl e an d significant , w e believ e tha

t th e biologica

l significanc e o f

thes e difference s i s low
. Reportedextrusio n siz e fo

r specie s i n thi s complex range s fro

m4.0-5. 5 m

m(Mose r 1996)
. Th e fac t tha t we observe dman

y larva e smalle r tha n th e reporte dextrusio n length s ca n b e explaine d partl y b y natura l variatio n o f

extrusio n length s withi n di e populatio n an dpartl y b y th e phenomenon o f

shrinkag e following preservatio n (Theilacke r 1980)
. If larva e les s tha n 5. 5 m m wer e zer o day s old , then th e presently assumedaged- 0 dlengt h o f 2. 4 m mwouldlea

dto a n overestimat

e o f larva l age s fo r thos e individual s wit

h aconsequen

t overestimatio n o f

entrainment mortalit y probability
. Estimating

Total Annual Entrainment Annua l estimate dnumber s o f

KG B rockfish larva

e entraine da

t DCP P varie drelativel y littl e betwee n 1996-9 7 Analysi s Perio d1 (Ej= 268,000,000 ) and1997-9 8 Analysi s Perio d2 (E~ r = 199,000,000 ) (Tabl e 5.2.4-2)
. The result s fo r analysi s period s 2 an

d3 ar e di e sam e becaus e th e overla p betwee n th e period s occurre ddurin g th e pea k larva l abundance s o f

KG B rockfis h larvae
. Value s o f 2 • SE(E r ) ca

n b e use dt o approximat

e 95 % confidenc e interval s aroundth e poin t estimates
. Th e confidenc e interval s overla p fo r th e estimate s indicatin g tha t th e difference s betwee n the mwer e probably no

t statisticall y significan

t an dtha t entrainmen

t o f thes e rockfis h larva e wa s relativel y constan

t betwee n years . Therefore , reproductiv e output i n th e KG B rockfish complex didnot

appea r to b e substantially affecte

db y th e 1997-9 8 E

l Nin o even

t (Figur e 5.2.4-1)
. Th e estimate s o f

annually entraine dKG

B rockfish larva

e abov e wer

e adjusted(Tabl e 5.2.4-3 ) to th e long-ter

maverag e Intak

e Cove surfac e plankto n to w inde x ( / //,) , calculate da s th e rati o betwee n th e 9 y r averag e ( /

) o f Intak e Cove samplin g (Figur e 5.2.4-5 ) an dth e averag e annua

l

TENER A E9-055. 0 5-13 5 Fina l 316(b ) Demonstratio n Marc h 1,200 0P.5 4 5.2. 4 Rockfishe s
inde x estimate d fro

m thes e sam e tow s durin g th e yea r bein g adjuste d (I,). Th e averag e indice s fo r th e year s 199 7 an

d 199 8 wer e 0.070 3 an

d 0.064 7 larvae/m 3 , respectively , an d th e long-ter

m averag e inde x fo r 1990-9 8 wa s 0.072 2 larvae/m 3 . Thus , th e ratio s use d t o adjus tth e 199 7 an d 199 8 estimate s o f

larvae entraine d wer e 1.027 an d 1.13 , respectively , indicatin g tha tlarva l densit y wa s slightl y lowe r tha n th e long-ter

m averag e durin g thos e years . Th e adjustment s resulte d i n a n estimat e o f

275,000,00 0 fo r 1996-9 7 Analysi s Perio d 1 an d 222,000,00 0 fo r 1997 - 9 8 Analysi s Perid d 2 . Th e sam e trend s in overal l abundance a s note d fo r unadjusted entrainment value s ar e apparen ti n th e adjuste d values : namely , larva l KGB rockfis h abundance change d littl e betwee n analysi s periods . Annua l estimate s o f

abundance durin g th e stud y perio d wer e lo w relativ e t o th e long-ter

m averag e inde x o f

larva l abundance fro

m th e Intake Cov e plankton tow s a s indicate d by th e inde x ratio s greate r tha n one . Fecundity

Hindcasting

(FH ) Th e parameters required fo r th e formulatio n o f FH estimate s fo r th e KG B rockfis h comple x wer e compile d from reference s o n differen tspecie s withi n th e group . Rockfis h withi n th e KGB comple x spawn onc e per year . Fro m multipl e reference s o n fecundity fo r variou s specie s withi n th e KG B comple x a

n averag e annua

l fecundit y estimate o f

213,15 8 egg s per femal e wa s use d t o calculat e FH

(DeLac y 1964 : 52,000-339,000 ; MacGrego r 1970 : 44,118-104,10 1 an d 143,156 - 182,890 ; Lov e an

d Johnso n 1999 : 80,000-760,000) , wit h a C V o f

100% . Fro

m th e variou s source s o f

infonnatio n o n KGB comple x rockfishe s (Tabl e 5.2.4-4) , longevit y o f 1 5 y r an d ag e a tmaturatio n o f

5 y r wer e use d t o calculat e FH. Survival o f

larvae fro

m th e tim e o f

releas e t o entrainmentwa s estimate d usin g a n instantaneou s mortalit y rat e o f 0.14/ d fro m blu e rockfis h (Mar

y Yoklavich , NOAA/NMFS/PFEG , Pacifi c Grove , CA , pers . comm. ) ove r 6.2 1 d sinc e n o independentestimate s o f larva l KGB rockfis h mortality wer e available . Thi s wa s calculate d fro m a mea n lengt h a tentrainment(4.1 7 mm ) minu s th e minimum lengt h ofth e centra

l 98 % ofth e lengt

h frequenc y distributio n (3. 3 mm ) an d divide d b y a larva

l growt h rat e fo r brow

n rockfis h o f

0.1 4 mm/

d (Lov e an

d Johnso n 1999 ; Yoklavic h etal . 1996) , a s

TENER A E9-055. 0 5-13 6 Fina l 316(b ) Demonstratio n Marc h 1,200 0P.5 5 5.2. 4 Rockfishe s

£ =e<-° ,4 > (62, > =0.419
. larvae The estimate dnumbe

r o f adult KG B rockfis h female s (FH) whos e reproductiv e output wa s equivalent to th e adjustednumbe

r e f larva e entraine dpe

r yea r a t DCP P range dfro

m61 7 i n 1996-9 7 t o 49 7 i

n 1997-9 8 (Tabl e 5.2.4-5) . Hindcas t adult estimate s differedminimally among th e analysi s periods
. Thes e fairl y low value s als o reflecte dth e relativel y hig h fecundit y ofth e adult s an dth e youn g averag e entrainmen t ag e fo r th e larva e i n thi s complex
. Sensitivit y Analysi s Fecundit y ha dth e greates t

leverag e o

n recalculate dvalue s o f

FH (Tabl e 5.2.4-6) . Varyin g thi s parameter i n th e model resulte di

n a n FH rang e o f 96-3,20 0 adult

female s amon g th e thre e analysi s periods , comparedt o th e origina l estimat e o f 497-61 7 adult

females
. Larva

l survivorship ha dth e nex t greates t amoun t o f leverag e o

n recalculate dFH. Adult Equivalent

Loss (AEL ) Larva l blu e rockfis h surviva

l estimate s wer

e use di n AEL estimate s fo

r th e KG B complex becaus e ofth e absenc e o f

datao n later-stag e surviva

l rate s i n KG B rockfishe s (Tabl e 5.2.4-7) . Th e surviva

l rat e ofth e KG

B larva e fro msiz e a t entrainmen

t t o siz e a t recraitment

int o th e fisher y wa s partitione dint

o six stage s fro

mparturitio n to recruitment
. Survivorship , t o a n assume drecruitmen

t ag e o f 3 yr , wa s apportione dint

o thes e lif e stages , an

dAEL wa s calculate d assumin g the entrainment

ofasingl e ag e clas s havin g the averag e ag e o f recruitment
. Simila r to th e result s see

n wit h FH , estimate s o f

adult equivalent s los t

(AEL) du e t o larva

l entrainment

wer e fairl y simila r among survey period s (Tabl e 5.2.4-8) . The AEL o f 1,12 0 adult s predicte dfro

mE Adj

_ T a t DCP P durin g 1996-9 7 reflect s the slightly highe r abundanc e o f

KG B rockfis h larva

e presen t durin g thi s yea

r whe n comparedt o 1997-9 8 Analysi s Perio d2 (AEL = 905)
. Th e relativel y constan t larva l abundanc e an

dsubsequen

t estimate s o f

effect s varie dlittl e amon g survey periods , indicatin g tha t recruitmen

t fo r the specie s i

n thi s complex remained relativel y constant .

TENER A E9-055. 0 5-13 7 Fina l 316(b ) Demonstratio n Marc h 1,200 0P.5 6 5.2. 4 Rockfishe s Sensitivit y Analysi s Larva l an d juvenil e survivorshi p ha

dth e greates t

leverag e o

n recalculate dvalue s o f

AEL (Tabl e 5.2.4-9) . Varyin g thes e parameter s i n th e model resulte di

n a n AEL rang e o f 175-5,82 0 adul t equivalent s fo

r th e 1996-9 7 an

d1997-9 8 analysi s periods , compare dt o th e origina l estimate o f

905-1,12 0 adul t

equivalents
. Pre-recrui t

survivorship ha

dth e nex t greates t leverag e o n estimate s o f

AEL. Varyin g th e estimate o f entrainment

didno t substantiall y chang e th e origina l valu e o f calculate dAEL. Empirical Transport

Model (ETM ) Th e length s o f

entraine dKG

B larvae , excludin g di e larges t 1 % an dsmalles t 1 % o f al l measurements , range dfrom3. 3 t o 5. 6 mm . Thus , KG B larva e ma y hav e bee n susceptibl e t o entrainment

fo r approximatel y 16. 4 dbase don a growmrate fro mlarva l brown rockfis h o f

0.1 4 mm/ d(Lov e an

dJohnso n 1999 ; Yoklavic h et al
. 1996)
. O

n average , however , entraine dKG B rockfis h larva

e wer e estimate dt o b e ca . 6. 2 dold
. Monthl y estimate s o f

proportiona

l entrainment

(PE, ) i n each it h survey range dfro

maminimu

m o f zer o t o amaximu

mo f 0.587±0.29 7 (± 1 SE(PE,\ ) i n March 199 8 (Tabl e 5.2.4-10) . Whe n bot h PE, an dth e annua

l proportio n o f

larva e extrude di

n th e it h survey perio d(/• ) wer

e equa l t o zero , n o larva

e wer e collecte da

t either th e DCP P intak e or fro mth e stud

y grid
. Highes t

PE, value s occurre di

n March durin g th e pea

k parturitio n o f

man y specie s i n th e KG B comple x (Moser 1996)
. However , th e highes t f value s typicall y occurre dacoupl e o f month s later

i n May
. Th e greates t

PE, occurre ddurin g th e 1997-9 8 E l Niii o even

t whe n onshore water movemen t wa s als o greatest . Du e t o th e broa

ddispersio n o f

KG B rockfis h larva

e acros s th e stud

y gri d(Figure 5.2.4-2) , P s fo r thi s comple x wa s calculate dusin g bot h alongshor

e an donshor e current movements . Current spee danddirection , measure da t th e singl e current

mete r nea r DCPP , wer

e usedt o exten dth e estimate s o f

P s beyondth e bound s ofth e stud y gri d(se e Figure 4-3) . Densit y o f KG B larva e withi n th e stud

y gri dwa s extende dalongshor e o n th e basi s o f

curren t speedan ddirectio n
TENERA E9-055. 0 5-13 8 Fina l 316(b ) Demonstratio n Marc h 1,200 0P.5 7 5.2. 4 Rockfishe s
constraine d b y averag e an d maximu

m estimate s o f

larva l duration an

d th e widt

h ofth e stud y grid perpendicular t o th e shore . The patter n o f larva l KGB densit

y withi n th e stud y grid wa s extrapolate d offshor e usin g onshore curren tmovemen tinferre

d fro m th e curren

tmete r an

d then extende d alongshore . Th e offshor e extrapolatio n o f abundance wa s als o modele d o n th e basi s o f averag e an

d maximum estimate d larva l durations , yieldin g a rang e o f possibl e entrainment probabilit y values . Tota l entrainmentmortalit

y probabilit

y (P M ) wa s calculate d fo r estimate d averag e an d maximum larva l duration i

n day s based o n curren

tspee d an

d directio n measured a

tth e singl e DCP

P curren t mete r (Figur e 5.2.4-6) . Bot h larva l duration an

d current s wer e use d t o determin e th e magnitud e o f P s . Alongshor e extende d estimate s o f P M ranged fro

m 0.04-0.0 5 ove r bot

h mea n an d maximu m larva l duration an

d betwee n year s indicatin g tha tP M represented a nearly constan t probabilit y o f larva l entrainmentalongshore . Offshor e extrapolatio n ofth e stud y gri d abundance o f KGB rockfis h larvae resulte d i n larger \IP

S value s wit

h longe r larva

l durations an

d consequentl y lowe r P M values . Estimate s o f

P M usin g offshor e extrapolate d abundance extende d alongshor e an

d base d o n th e tw o larva

l durations ranged fro

m approximatel y 0.0 2 i

n bot h year s usin g mea

n duration t o 0.0 1 i

n Analysi s Perio d 3 (Jul y 1997-Jun e 1998 ) an d 0.00 5 i n Analysi s Perio d 4 (Jul y 1998-Jun e 1999 ) usin g maximum larva l duration . Th e difference s betwee n th e offshor e density extrapolate d estimate s o f P M showe d tha

twhil e onshor e transpor

tdi d notplay a significan trol e i

n th e variatio n of\/P s ove r shor

tlarva l durations , its combinatio n wit h different annua l value s o f

PE an d alongshor e flo w di d resul ti n larger difference s ove r longe r durations . Th e averag e areas ove r which larva l densitie s wer e extrapolate d were mor e simila r betwee n 1997-9 8 an

d 1998-9 9 based o n mea n duration ( 5 an

d 4 time s th e grid stud y area , respectively ) tha n on maximum duration (2 3 an d 3 0 time s th e grid study area , respectively) . Interpretation

of Assessment

Results Abundance o f

larval , juvenile , an

d adultKG

B rockfishe s varie s betwee n years , bu tthere ar e n o apparen tdecreasin g trend s i

n abundance ove r time . Subtida l fish abundance estimate s collecte d a tth e DCP

P Sout h Control statio n fro

m 197 8 t o 199 8 (Tenera 1997c ) varied seasonall y betwee n
TENER A E9-055. 0 5-13 9 Fina l 316(b ) Demonstratio n Marc h 1,200 0P.5 8 5.2. 4 Rockfishe s
year s wit h occasiona l peak s (Figur e 5.2.4-7) . Th e relativel y stabl e adultan d YO Y abundance note d i n th e DCP

P subtida l fish observatio n dataseti s als o reflecte d b y fairl y stabl e larva l abundanc e i

n Intake Cov e plankto n tow s (Figur e 5.2.4-5) . Thus , loca l abundance o f al l lif e stage s o f KG B rockfishe s i s no tdeclining , indicatin g tha tlarva l losse s du e t o entrainmentar e no t adversel y impactin g th e loca l population . Rockfishe s i

n th e KGB comple x hav e bot h commercia l an

d recreational fishery valu e (Star r e tal . 1998 ; Bloese r 1999 ; Le a e tal . 1999) . Commercial groundfis h landing s fro m al l gea r type s reported b y Pacifi c State s Marin e Fishery Counci l (PSMFC ) in thei r PacFIN databas e fo r th e year s 1993-199 9 sho w landing s o f black-and-yellow , gopher , an d gras s rockfishe s i

n th e Morr

o Ba y area increasin g from 1993-199 6 bu tme n decreasin g an

d remainin g relativel y stabl e through 199 9 (Figur e 5.2.4-7) . Thes e thre e specie s ar e th e member s ofth e KG B comple x tha tranke d in th e to p te n landing s a

tMorr o Bay , Californi a in 199 7 (Bloese r 1999) . Th e majorit y ofth e pea

k landing s in 199 6 wer e accounte d fo r b y a singl e species ; th e gophe r rockfis h (Sebastes camatus), butthi s relationshi p ha s alternate d betwee n gophe r an d gras s rockfishe s (S. rastrelliger) ove r recen tyears . Bloese r (1999 ) indicate s tha tcatche s o f

KG B rockfishe s in Californi a hav e rise n ove r th e las t10-1 5 yr . Star r e tal . (1998 ) note tha

twhil e catche s wer e stabl e o r increasin g betwee n 1980-1995 , abundanc e o f many specie s wa s muc

h highe r befor e 1980 . Th e PSMF C databas e provide s ex-vesse l price s o f rockfishe s lande d a

tth e port s in th e Morr

o Ba y area durin g 1999 . Th e member s ofth e KGB comple x tha twer e landed a

tthes e port

s in 199 9 wer e th e black-and-yello w rockfis h ($7.05/kg) , brow n rockfis h ($7.38/kg) , gophe r rockfis h ($6.84/kg) , gras s rockfis h ($11.22/kg) , kel p rockfis h ($6.53/kg) , Chin a rockfis h ($11.36/kg) , an d coppe r rockfis h ($3.15/kg) . Thus , th e averag e price-per-kilogram fo r KGB comple x rockfishe s lande d a tMorr o Ba y area port

s i n 199 9 wa s $7.65 . I

n 1999 , 6 4 M T (ex-vesse l revenu e = $500,000 ) o f

thes e rockfishe s wer e landed i n th e Morr

o Ba y area (PSMF C PacFI N database) . Grass , gopher , black-and-yellow , an d coppe r rockfishe s represente d 93 % ofth e catch b y weigh t and , consequently , produce d th e mos trevenu e withi n thi s group o f landings . Copper , grass , calico , an d kel p rockfis h accounte d fo r 85 % ofth e souther n Californi a recreationa

l catch b y number . TENERA E9-055. 0 5-14 0 Fina l 316(b ) Demonstratio n Marc h 1,200 0P.5 9 5.2. 4 Rockfishe s
Estimate s of

AE L wer e comparedto harves t

dataassuming 100 % catchabilit y ofth e adul

t equivalent s an

dassumin g n o compensator y mortality
. Thes e assumption s wil l caus e a n overestimate whe

n directly convertin g AEL

int o fisher y value s (e.g. , price-per-kilogram)
. Give n thes e conditions , a

n estimate deconomi c los s t o th e loca l fisher y couldb e basedo

n a n averag e weigh t o f 1. 0 k g fo r a3-y r oldKG B rockfis h recruitin g to th e live-fis h fishery
. The annua l AEL estimate o f

97 7 rockfishe s translate s t o apotentia l direc t economi c los s o f

$7,47 4 base do

n th e averag e pric e o f

$7.65/kg
. Thi s valu e represent s approximately 2 % ofth e ex-vesse l revenu e attribute dt o KG

B complex rockfishe s landeda t port s i n th e Morr

o Ba y are ai n 199 9 (PSMF

C PacFin Database)
. Alternatively , estimate s o f

proportiona

l entrainmen

t mortalit y couldb e translate dint

o losse s to loca l fisheries. The probabl e effec t o f entrainment

losse s a t DCP P o n fisherie s i s likely localize d t o th e port s withi n th e Morr o Ba y are asinc e mos t

fishes i n thi s complex demonstrat

e hig h sit e fidelit y (Heilpri n 1992 ; Le aet

al
. 1999)
. I

n addition , extensio n o f

effect s basedo

n alongshor

e current s an

dlarva l duratio n indicat

e tha t th e are apotentially affectedi s thre e t o seve n time s th e siz e ofth e stud

y grid , whic

h i s likely withi n th e rang e o f fishers fro meither Por t Sa n Lui s o r Morr o Bay
. Th e estimat

e o f entrainment

mortalit y (P M ) i s betwee

n 4-5 % fo r thi s area . Applyin g thi s rang e o f

proportiona

l reductio n t o th e loca

l catch fro mth e Morr

o Ba y are ai n 199 9 yield s estimate ddolla

r losse s to di e Morr

o Ba y are afishery o f

approximately $20,000
. 

### 5.2.4. 2 Blu e Rockfis h (Sebastes spp . V/S . mystinus)

Complex The specie s tha

t compris e th e blu e rockfis h complex ar e thos e rockfish larvae tha

t hav e ashor

t ventra l pigmen t serie s an dno dorsa l serie s o r pectora l pigmentation
. Thi s grou

p currently consist s o f

1 6 rockfish specie s (Tabl e 5.2.4-1)
. Th e blue rockfish (S. mystinus) i s bein g placedi n thi s grou p despite it s designatio n a s amembe r ofth e Vd p group . The pigmen

t characteristic s o f youn g blu e rockfis h plac e the mi n thi s complex becaus e they cannot b e distinguishe dfro

mothe r specie s i n th e grou p until they develop pectora l an ddorsa l pigmentation
.

TENER A E9-055. 0 5-14 1 Fina l 316(b ) Demonstratio n Marc h 1,200 0P.6 0 5.2. 4 Rockfishe s
Vetter an dStannar d(1999 ; Appendix J ) geneticall y identifie dlarva e fro mth e Sebastes spp . V pigment group . Their

conclusion s indicate dtha

t mor e tha n hal f o f th e larva e i n thi s pigmen

t group wer e actuall y blu e rockfis h larvae
. Additiona l evidenc e supportin g th e fact tha t man y o f th e individual s i

n thi s comple x woul db e blu e rockfis h i s tha t they hav e th e earlies t

parturitio n tha t occur s i n Januar y (Wylli e Echeverri a1987 ; Lov e 1996 ) an dcorrespond s t o th e larva

l abundanc e dat acollecte da t DCP P i n th e present

stud y (Appendix H) . Thes e data , combine d wit h th e fact that youn g blu e rockfis h larvae ar e indistinguishabl e fro mother .rockfish larvae i

n thi s pigmen

t group , ie dt o th e designatio n given o f Blu e Rockfish Complex
. 

### Sebaste s spp . V Thre e specie s fromdi e blu e rockfis h comple x that commonly occur

of f centra l Californi aar e usedhere t o represent

th e demograph

y o f other specie s fro

mth e complex : splitnos e rockfis h (S. diploproa), greenstripe drockfis h (S. elongatus), an dvermilio n rockfis h (S. miniatus). A s alat e additio n t o thi s grouping , th e blu e rockfis h i s treate dseparatel y a s arepresentativ e o f thi s comple x a s well
. I

n th e earlies t

larva l stages , blu e rockfis h resembl e th e other larvae i n thi s pigment grouping
. Th e splitnos e rockfis h i s demersa l an dusuall y see

n o n sof t substrata , ofte

n singly i n small depression s o r

i n nea r bottomaggregations , wit

h apea k populatio n densit

y between depth s o f

9 2 an d46 0 m(Lov e 1996 ; Mose r 1996)
. Pelagi c juvenile s congregat e arounddriftin g kelp andsettl e i n shallo w water

(Lov e 1996)
. Greenstripe drockfis h are demersa l an dsemi-pelagi c andfoun

da t depth s o f 25-50 0 m , bu

t are mos t common between 46-24 5 m(Matares e e t al
. 1989 ; Lov e 1996)
. They ar e typicall y solitar

y o n mu dor cobbl e (Lov e 1996) , an

d juvenile s recrui t

i n depth s o f

30

- 8 9 mdepth s (Lov e et

al
. 1990)
. Vermilio n rockfis h ar

e demersa l an dsemi-pelagi c an

daggregat e nea r o r slightl y abov e th e bottom , ofte

n ove r high relie f

rock y substrata
. They ar

e mos t abundan t i n depth s o f

6 0 t o a t leas t 23 9 mwithi n th e Souther

n Californi aBigh

t (Lov e et al.1990)
. Adult s hav e bee

n foun di n depth s a s shallo w a s 7 mnea

r Diabl o Canyon (Burg e andSchult z 1973) , an

dthe y appea

r t o hav e ahigh

TENERA E9-055. 0 5-14 2 Fina l 316(b ) Demonstratio n Marc h 1,200 0P.6 1 5.2. 4 Rockfishe s degre e o f sit e fidelity (Le aet

al
. 1999)
. Juvenile s settl e i n wate r depth s o f 5-3 0 man

dpea k abundanc e o f

juvenile s an

dsmall adult s occur s i

n 90-14 9 mdepth s (Love e t al
. 1990)
. Splitnos e rockfis h rangin g i n siz e from195-36 5 m

mproduc e 14,400-303,70 0 eggs/femal e (Phillip s 1964)
. Their

spawning perio di s fro

mJanuar y through Septembe

r (Phillip s 1964 ; Wylli e Echeverri a1987 ; Mose

r 1996) wit h possibly tw o brood s pe

r yea r (Westrheim1975)
. Growt

h fo r wildcaugh

t larva e wa s 0.21-0.9 6 mm/

d(Boehler t 1981)
. Pre-juvenil e splitnos e remain pelagi c fo r about 1 y r an dreach size s o f

5 5 m mprio r to settlin g t o benthi c habita t (Boehler t 1977)
. A planktoni c duratio n o f

ca . 2. 5 m o wa s estimate dfro

mgrowt h rate s an dfro mextrusio n an

d transformatio n length s (Boehler t 1981 ; Mose

r 1996)
. Estimate s o f

ag e a t 50 % maturit

y o f splitnos e rockfis h var

y fro m4- 7 yr (Phillip s 1964 ; Che

n 1971 ; Wylli e Echeverri a1987 ) wit h 100 % maturit

y estimate dt o occur

a t 1 0 y r (Bloeser 1999)
. Greenstripe dfecundit y range s fro

m 26,00 0 a t 50 % maturit

y t o 344,00 0 a

t ca . 100 % maturit

y (Haldorso n an

dLov e 1991)
. Spawnin g occur s tw o o r

mor e time s per

yea r (Lov e e t al
. 1990 ) fromJanuar

y through Jun e o r

Jul y (Har t 1973 ; Wylli e Echeverri a1987)
. Femal e greenstripe drockfis h reac h 50 % maturit y a t 7 yr (Wylli e Echeverri a1987 ) an

dthei r estimate dlongevit

y i s 2 8 y r fo r female s an

d3 7 yr fo r male s i n th e Souther n Californi aBigh

t (Lov e et al
. 1990)
. Th e fecundit

y o f vermilio n rockfish rangin g i n lengt h fro m31 5 t o 55 0 m

mS L range dfro

m3,300-1,625,60 0 egg s (Phillip s 1964)
. Vermilion s rangin g i n lengt h fro m46 0 t o 68 0 m

mS L produce d158,915-2,683,76 8 egg s pe r individua l i n th e Souther n Californi aBigh

t (Lov e et al
. 1990)
. A

t 50 % maturit

y they ar e estimate dto produc e 151,000 egg s wit

h amaximu

mpossibl e productio n o f

5,602,00 0 (Haldorso n an

dLov e 1991)
. Vermilio n rockfis h spawn onc e pe r yea r fro mSeptembe

r through Marc

h (Phillip s 1964 ; Wylli e Echeverri a1987 ; Lov e e t

al
. 1990)
. Ag e a

t 50 % maturit

y fo r vermilio n rockfis h i s estimate dt o b e 3- 5 y r fo r female s (Che

n 1971 ; Wylli e Echeverri a1987 ) an d8 yr a t 100 % maturit

y (Bloese r 1999)
. Young-of-the-yea

r ar e commo n ove r sand y pocket s i

n an dnea r kel p bed s (Le aet

al
. 1999)
. Rockfishe s i

n thi s specie s complex exhibi t awide rang e o f

estimate s o f

longevity
. Longevit

y o f splitnos e rockfis h wa s estimate da t 1 8 y r i n early studie s (Phillip s 1964 ; Che n 1971)
. Radiometri c ag e validation , however , indicate s alongevit y exceedin g 8 0 y

r (Bennet t e t al
. 1982)
. Subsequen

t
TENER A E9-055. 0 5-14 3 Fina l 316(b ) Demonstratio n Marc h 1,200 0P.6 2 5.2. 4 Rockfishe s
studie s utilizin g otolith section s suppor tthes e finding s wit

h estimate s o f

81-8 4 y r (Wilso n an

d Boehler t1990) . N o estimate s o f longevit y exis tfo r greenstripe d rockfish . I n a n earl y study , th e longevit y o f

vermilio n rockfis h wa s estimate d t o b e 2 2 y r (Che n 1971) . Mor e recentl y the y hav e bee n age d a s high a s 4 3 y r (Paul Reilly , CDF&G , Monterey , CA , pers . comm.) . Th e oldes tfish reported i n a stud y o f

whol e vermilio n rockfis h otolith s wa s 2 9 y r fo r a 59 7 m m TL individual (Le a etal . 1999) . Eac h o f thes e thre e specie s ha s varyin g level s o f commercia l an

d recreationa

l fishery importance . Splitnos e rockfis h ar

e primaril y a commerciall y harveste d fish wit h th e majo r fishery occurrin g fro m centra l Californi a northwar

d t o a tleas tWashington ; itwa s ranke d 9*** ° i n th e trawle d rockfishe s of

f th e U.S . wes tcoas ti

n 199 7 (Lov e 1996 ; Bloese r 1999) . Splitnos e rockfis h ranke d 4 t n i n Monterey Bay , Californi a landings , bu tdi d no tplac e in th e to p ten in Monr o Ba y landing s (Bloese r 1999) . Fo r th e five majo r port s ofth e MBNM S an

d Sa n Francisco , di e splitnos e rockfis h ha s show n averag e landing s o f about235. 5 MT/yr , wit

h catche s declinin g sinc e 198 3 (Starr e tal . 1998) . Greenstripe d rockfis h ar e typicall y taken in th e deep-wate r recreationa l fishery bu

tar e incidentall y caugh tin commercia l fisherie s (Lov e 1996) . Thi s specie s i s note d a s exhibitin g reduction s i

n mea n lengt h ove r th e perio d o f

195 0 t o 199 4 (Starr e tal . 1998) . For th e five majo r port s o f di e MBNM S an

d Sa n Francisco , th e averag e number o f greenstripe d rockfis h take n per yea r wa s 23,07 0 (Starr e tal . 1998) . Annua l landing s fo r th e U.S . wes tcoast , however , d o no t ran k i n th e to p te n fo r an y fishing gea r type s use d t o harves trockfishe s (Bloese r 1999) . Vermilio n rockfis h ar

e a n importan

tcomponen to f

bot h recreationa

l an d commercia l fisheries an d a majorit

y ofth e catch occur s sout h o f Monterey Bay (Lov e 1996) . Thes e fish mak e u p 2 - 4 % ofth e tota

l marin e recreational fishery catc h i n areas wher e the y ar

e abundan

t(Lov e 1996) . Landing s o f

vermilio n rockfis h i

n th e MBNM S hav e varie d widel y ove r th e perio d 1980-199 5 bu thav e average d about67. 7 MT/y r (Star r e tal . 1998) . Fo r th e five major port s ofth e MBNM S an d Sa n Francisco , th e averag e number o f vermilio n rockfis h taken per yea r wa s 59,49 0 (Starr e t al . 1998) .

TENERA E9-055. 0 5-14 4 Fina l 316(b ) Demonstratio n Marc h 1,200 0P.6 3 5.2. 4 Rockfishe s

Sebastes mystinus (Jorda

n an dGilber t 1880) ; blu e rockfish ; lengt h t o 5 3 cm ; norther n limi t uncertain , a

t leas t Vancouve

r I
. (possibly Aleutia

n Is. ) to Pt
. Sant o Tomas , norther

n Baj aCalifornia ; surfac e t o 54 9 m ; dar k blue wit h ligh t blu e mottlin g (Miller

an dLe a1972 ; Eschmeye

r et al
. 1983)
. Th e typica l habita t fo r blu e rockfis h i s schoolin g i n midwate r or nea r kel p forests , a

t th e surfac e nea r shallo w t o dee

p reefs , wher

e adult s ca n rang e to depth s o f

50 0 m(Mose

r 1996)
. Blue rockfis h appea

r t o hav e ahig

h degre e o f

sit e fidelity (Le aet

al
. 1999) , an

dhomin g abilit

y ha s been demonstrate d(Heilpri n 1992)
. Primar y foo ditem s are midwate

r organism s (Gotshal l e t

al
. 1965 fro mLe aetal
. 1999)
. Blu e rockfis h ar

e viviparou s wit

h planktoni c larva

e an djuvenile s (Mose

r 1996)
. Mille

r an d Geibe l (1973 ) estimate dtha t thei r fecundit y range s fro

m50,000-300,00 0 egg s pe r female pe r year . However , afemale tha t measure d40 5 m

mT L ha d524,00 0 youn g (Wale s 1952)
. Spawning (extrusio n o f

larvae ) occur s Novembe

r through Marc

h wit h apea k i n Januar y through Februar

y (Miller an dGeibel 1973 ; Wylli e Echeverri a1987 ; Mose r 1996) , makin g thi s one ofth e earlies t specie s o f rockfis h larva

e t o b e release dseasonally
. Larva e ar e release donc e annually (Le aet al
. 1999)
. However , Moren o (1993 ) foun dtha t thi s specie s ma

y produc e multipl e spawns . Larva e are about 3. 5 m ma t parturitio n (Miller

an dGeibel 1973) , wit

h a n averag e planktoni c duratio n o f 12 9 d , a s calculate dfro

mobservation s o f

nin e larva e (Dav e Woodbury , NOAA/NMFS , Tiburon Laboratories , CA , pers . comm.)
. A perio do f 3- 5 m o wa s observe dfo

r pelagi c juvenile s t o settl e to th e nearshor

e bentho s (Adam s an

dHowar d1996)
. Young-of-the-yea

r (YOY ) wer

e first observe di n nearshor e kel p bed s i n Ma y an dJune a t 40-6 0 m mT L (Le ae t al
. 1999)
. I

n April , juvenile s o f

about 45-5 0 m mT L concentrat

e i n shallo w rock

y area s an di n kel p canopies
. B y Octobe r thes e fis h rang e fro

m65-9 0 m

mT L (Mille r an dGeibe l 1973)
. Estimate dinstantaneou s

TENER A E9-055. 0 5-14 5 Fina l 316(b ) Demonstratio n Marc h 1,200 0P.6 4 5.2. 4 Rockfishe s
mortalit y fo r juvenile s i

n thei r firstyea r o f

lif e ranged fro

m 0.00 1 t o 0.00 8 (Adam s an d Howar d 1996) . Longevit y fo r th e blu e rockfis h wa s estimate d a t1 7 y r fo r male s an

d 2 4 y r fo r females . Scale s wer e use d t o estimat e age , however , an d n o validatio n wa s performed (Mille r an d Geibe l 1973) . Growt h o f 0.2 3 t o 0.3 5 mm/

d wa s observe d fo r 8 5 m m individual s (Mille r an d Geibe l 1973) , an

d mean monthl y growt

h from ta g returns o n adults wa s 2.4 6 m m (Wale s 1952) . Th e smalles t sexuall y matur

e mal e Le a e tal . (1999 ) collecte d wa s 21 9 m m TL , an d th e larges timmature mal e wa s 33 2 m

m TL . Th e smalles tsexuall y matur e femal e wa s 19 6 m

m TL , an d th e larges timmatur

e femal e wa s 29 3 m

m TL . Female s wer e estimate d t o attain firstmaturit y a t4- 5 yr , 50 % maturit

y a t6 yr , an d 100 % maturit

y a t1 1 y r (Wale s 1952 ; Wylli e Echeverri a 1987 ; Bloese r 1999) . Blu e rockfis h ar

e on e ofth e mos timportan trockfis h in recreationa

l spor tfishery alon g th e Californi a coast . I

n som e years , a

tsom e locations , u p t o 31 % o f al l fishes take n in th e marin e recreational fishery wer e blu e rockfis h (Lov e 1996) . Blu e rockfis h ar e taken o n hook-and-lin e o r whil e divin g (Lov e 1996) . Th e commercia l fishery i s typicall y smal l wit h a fe w exception s (Star

r e tal . 1998) . Fo r th e five majo r port s ofth e MBNM S an

d Sa n Francisco , th e blu e rockfis h ha s ha d variabl e bu

thig h landing s fro

m 198 0 t o 199 5 (Star

r e tal . 1998) . Th e calculate d averag e number offis h taken per yea r wa s th e secon d highes to f al l rockfishe s a

t752,00 0 (Starr e tal . 1998) . I n 1996 , th e averag e pric e fo r rockfis h fro m commercia l hook-and-lin e landing s wa s approximatel y $0.43/k g (Bloese r 1999) . 

### Othe r member s of th e V-grou p comple x Al l bu tfou r ofth e rockfishe s i n thi s grou p hav e thei r center s o f distributio n i

n th e norther

n Pacifi c Ocean . Th e northernmos trang e ofth e ros y rockfis h i s Puge tSound , Washington , whil e th e treefish , honeycomb , an d Mexica n rockfishes ' northernmos trang e i s of f centra l California . Th e Mexica n rockfis h extend s all th e wa y into th e Gul f o f California . Th e roughey e an d yellowey e rockfishe s ar

e th e larges tan

d longes tlivin g rockfishe s i n thi s group . Th e roughey e ca n attai n a lengt

h o f 9 6 cm T L an

d a n ag e o f 9 5 y r (Mille r an

d Lea 1972 ; Nelso n an

d Quin n I I

TENERA E9-055. 0 5-14 6 Fina l 316(b ) Demonstratio n Marc h 1,200 0P.6 5 

# I I 

# 1 S

I I 1 1 1 5.2. 4 Rockfishe s

1986)
. Th e yellowey e rockfis h ca n attai n asimila

r lengt h o f 9 1 c mT L an dalongevit

y o f 11 8 yr , one ofth e highes t

eve r recorde di

n fishes (Kri s Munk, Alask aDepartmen

t o f Fish an dGame , | | Sitka , AK , pers . comm.)
. The ros y an dhoneycom

b rockfishe s appea

r t o b e th e shortes t

lived(1 8 an d1 7 yr , respectively ; Che

n 1971 ) andare amon g th e smalles t (3 6 cman

d2 7 c mTL , || f respectively ; Che n 1971 ) i n thi s group . Ag e an

dlongevit y information i s no t

availabl e fo

r th e Mexican , darkblotched , pygmy , an dtreefis h rockfishes
. The mos t fecun dspecie s fo

r which informatio n wa s availabl e i s di e yellowey e rockfis h tha t ca n produc e up to 2. 7 millio n egg s (Clemen s an

dWilby 1961)
. However , there i s apaucit y o f information fo

r man y ofth e remainin g specie s regardin g fecundity
. The lates t age s a t 50 % maturit

y belong s t o di e roughey e rockfis h a t 2 0 y r (Gunderso n 1997 ) an

dth e yellowey e rockfis h a

t 1 8 yr (Yamanak

aan dKronlund1997)
. Whil e thes e figure s ma

y represent

th e highes t

age s a t maturit y fo r di e group , given tha

t thes e tw o specie s reach th e greates t

lengt h an dage , tiiere i s alac

k o f information i

n tiiis regar

dfo r severa l ofth e otiie

r long-live dgrou

p members , namely , silvergrey an ddarkblotche drockfishes
. Summary

of Field Collections Larvae i n th e blu e rockfish comple x showeddistinc t seasona l peak s i n abundanc e a

t th e DCP P intak e structure durin g th e year s 1996-199 9 (Appeedi x H) , wit h thei r greates t abundanc e tendin g t o occur

betwee n Januar y an dMarch (Figur e 5.2.4-8)
. Larvae i n tiiis complex appeare d i n th e wate r colum n soone r tha n di dthos e i

n di e KG B complex
. Ther

e wer e 2,73 1 larva

e identifie dfro

m53 7 bong o ne

t subsample s collecte da

t th e DCP P intak e structur e betwee n October 199 6 an dJun e 199 9 representin g 11 % o f di e subsample s collecte dan dprocesse dfro

m tha t locatio n durin g dia

t period
. A n E l Niii o tha t bega n durin g th e sprin g o f

1997 , wa s detecte d alon g th e coas t

o f Californi ai

n th e fal l o f 199 7 (Lyn n e t al
. 1998 ; NOA

A 1999) , an

dma y account fo r lowere ddensit

y i n 199 8 compare dwit

h th e previou s season . Th e war mwate r E l Niii o event ma y als o hav e delaye dspawnin g slightl y i n 1997-9 8 (Woodbur

y an dRalsto n 1991)
. Additionally , VenTresc ae

t al
. (1995 ) demonstrate dtha t blue rockfish i

n post
- E l Niii o year s d o no t hav e sufficien

t reserve s t o produc e larg e amount s o f young , s o thes e year s typicall y hav e low larva l abundance
.

TENERA E9-055. 0 5-14 7 Fina l 316(b ) Demonstratio n Marc h 1,200 0P.6 6 5.2. 4 Rockfishe s
Blu e rockfis h comple x larvae generall y occurre di n th e DCP P stud y gri dan da t th e DCP P intak e structure wit

h simila r seasonalit y (Appendix H) , andthei r pea k abundanc e occurre di

n Januar y an dFebruar y (Figur e 5.2.4-9)
. A s wit

h th e entrainment

data , densit

y appear s t o b e depresse d durin g th e 1997-9 8 E

l Niii o relativ e t o densit

y estimate s fro

m1999
. Ther

e wer e 2,96 5 larva

e identifie dfro

m79 2 bong o ne

t subsample s representin g 26 % ofth e stud y gri dsubsample s collecte dan

dprocesse dfro

mJul y 1997-Jun e 1999
. Mea n densit y i n di e pea k seaso n o f blu e rockfis h comple x larva

l abundanc e appear s t o b e greater durin g th e Winter/Sprin g o f 1996-9 7 tiian tha t measure ddurin g 1997-9 8 (th e E l Nin o year)
. Standar dlength s o f

al l blu e rockfis h comple x larvae collecte dfro mth e DCP

P intak e structure between Octobe

r 199 6 andJun e 199 9 an

dmeasure d(2,40 7 larvae ) range dfro maminimu

mo f 1. 7 m mt o amaximu

mo f 8. 9 m m(Figur e 5.2.4-10) . Th e centra l 98 % o f tiiis length-frequenc y distributio n yielde datruncate ddistributio n witi i minimumandmaximu mlength s fo

r th e analyse s o f 2. 7 m man d4. 5 mm , respectively
. Th e mea n larva l lengt h i n thi s distributio n wa s 3. 6 mm . Th e growt h rate applie dt o th e blu e rockfis h comple x (0.1 4 mm/d ) derive dfo r brow n rockfis h fro

m Yoklavic h et

al
. (1996 ) andreporte di

n Love an dJohnso n (1999 ) wa s usedt o estimate age s o f entraine dlarvae
. Assumin g that th e shortes t

larv aofth e central 98 % ofth e length-frequenc y distributio n wer

e immediatel y post-extrusio n an dage dzer o days , di e estimate dage s o f larvae entraine dcoul drang e fromzer o day s u p t o 4 4 dpost-extrusio n fo

r th e larges t

larv ameasured
. The averag e estimate dag e o f blu e rockfis h larva

e entraine da

t DCP P wa s 6 dpost-extrusion
. Significan t difference s were detecte dwhe n comparin g mea

n larva l length s (/-test : p < 0.001 ) an d length-frequenc y distribution s (Kolmogorov-Smirno v test : p < 0.001 ) o f blu e rockfis h comple x larva e fro mth e DCP

P intak e structure an

dstud y gri ddespite th e apparen

t similarit y ofth e distribution s i

n th e tw o location s (Figur e 5.2.4-11) . It i s likely tha

t th e larg e numbe

r o f individual s measure dan

dteste dwit

h th e /-tes t

le dt o th e abilit

y ofth e statistical tes t

t o detec t a differenc e between th e tw o mean s o f 3. 6 m ma t th e intak e structure an

d3. 5 m mfro mth e stud

y grid
. The maximu

mdifferenc e betwee

n th e tw o distribution s measure dby th e Kolmogorov

Smirno v tes t

occurre da

t 3. 9 m man dindicate dtha

t mor e smaller individual s wer

e foun di n th e gri dtha n a t th e intak e structure , confirmin g th e result ofth e /-test
. Whil e slight

difference s wer

e TENERA E9-055. 0 5-14 8 Fina l 316(b ) Demonstratio n Marc h 1,200 05.2. 4 Rockfishe s

detecte da s statisticall y significant , i t appear s tha

t th e larva e foun di n thes e tw o location s wer

e fro mver y similarly structure dpopulations
. Reporte dextrusio n siz e fo

r specie s i n thi s comple

x range s fro

m3.8-5. 2 m

m(Mose r 1996)
. The fact tha t we observedsom

e larva e smalle r tha n th e reporte dextrusio n length s ca n b e explaine d partl y b y natura l variatio n o f

extrusio n length s within th e populatio n an dpartly b y th e phenomenon o f

shrinkag e followin g preservatio n (Theilacke r 1980)
. I f all larva e les s tha n 5. 2 m mwer e assumedt o b e aged- 0 d , then th e presen t P M wil l b e a n underestimat

e ofth e probabilit y o f entrainmen

t sinc e larva

l duratio n couldhav e bee

n overestimate db

y approximately 17d . • Estimating

Total Annual Entrainment Annua l estimate s a

t DCP P ofth e numbe

r o f entraine dlarva

e fromth e blu e rockfish complex wer e greates t durin g 1996-9 7 Analysi s Perio d1 (E,. = 49,700,000 ) whe n comparedt o 1997-9 8 Analysi s Perio d2 (E T

= 5,410,000 ) (Tabl e 5.2.4-11) . I n contras t t o th e relativ e similarit

y among annua l estimate s o f

entraine dKG

B rockfish larvae , there wa s alarg e differenc e betwee n th e samplin g year s fo

r larva e o f fishe s i n th e blu e rockfish complex
. Non-overlappin g 95 % confidenc e interval s approximate db y 2-SE(E T

) indicate dtha

t thes e difference s wer

e probably statisticall y significant
. The secondyea r o f sampling , whe

n entraine dnumber s o f

larva e fro mth e blu e rockfis h complex wer e lower , wa s durin g th e E

l Niii o event . Thi s climatologica l an d oceanographi c even

t coul dhav e ha

da n effec t o n th e reproductiv e output

o f rockfishe s i

n thi s complex
. Annua l estimate s ofth e numbe

r o f blue rockfish complex larva e entraine dwer

e adjusted(Tabl e 5.2.4-12 ) t o along-ter

mmea n basedo n annua l indice s usin g weekly Intak e Cov e surfac e plankto n tow s (Figure 5.2.4-12) . The averag e indice s fo r th e year s 199

7 an d199 8 (/, ) wer

e 0.018 1 an d0.004 9 larvae/m 3 , respectively , whil e the long-ter maverag e inde

x ( / ) was 0.0307 larvae/m 3 fo

r th e year s 1990-1998
. Th e rati o combinin g thes e value s (III,) yielde dth e correctio n facto

r use dto adjus t th e annua l entrainmen

t estimate s t o th e long-ter

maverage . Thes e

TENER A E9-055. 0 - 5-14 9 Fina l 316(b ) Demonstratio n Marc h 1,200 0P.6 8 5.2. 4 Rockfishe s
factor s wer

e 1.6 9 fo r 1997 an d6.2 6 fo r 1998
. Number s o f

entraine dlarva

e fo r each ofth e analysi s period s wer

e increase db

y thes e corrections , indicatin g tha t larva l abundanc e ofth e blue rockfis h comple x wa s belo w th e long-ter maverag e durin g bot

h samplin g years . Non-overlappin g 95 % confidenc e interval s approximate db y 2 • SE(E

AJj

_ T ) indicate dtha

t th e difference s betwee

n th e point estimate s fo

r 1996-9 7 Analysi s Perio d1 (E Adj

_ T = 84,000,000 ) an

d1997-9 8 Analysi s Perio d2 ( P Adj . T = 33,800,000 ) wer

e statisticall y significan

t even afte r th e adjustment
. Fecundity

Hindcasting

(FH ) Th e parameter s require dfo r th e formulatio n o f

FH estimate s fo

r th e blu e rockfis h complex wer e compile dfro

mreference s o

n differen t specie s withi n th e group . Rockfishe s withi n thi s grou p spawn onc e o r

twic e pe r year . Frommultipl e reference s o n fecundit y fo r variou s specie s withi n th e complex , a

n annua l fecundit y estimate o f

508,60 7 egg s pe

r female , wit

h assume dCV=100% , wa s use dt o calculate FH

(Wales 1952 : 524,000 ; Phillip s 1964 : 14,400-303,70 0 an d3,300

- 1,625,600 ; Miller

an dGeibel 1973 : 50,000-300,000 , an d524,000 ; MacGregor

1970 : 69,599 ; Lov e e t al
. 1990 : 158,915-2,683,768 ; Haldorsen an dLove 1991 : 26,000-344,000)
. For blu e rockfis h comple x fishes, longevit y estimate s o f

24. 7 y r an dag e a t maturatio n o f

6 y r wer e usedi n FH calculation s (longevity

- Che n 1971 : 2 2 yr ; Miller

an dGeibel 1973 : 2

4 yr ; Lov e et

al
. 1990 : 2 8 yr ; Ag e a

t 50 % maturit

y - Wylli e Echeverri a1987 : 6 yr ; Bloese r 1999 : 6 yr ; Le ae t

al
. 1999 : 6 yr)
. Larva l survivorship wa s estimate dfro mextrusio n t o entrainment usin g a n instantaneou s blue rockfis h larva

l mortalit y o f 0.14/ d (Mar y Yoklavich , NOAA/NMFS/PFEG , Pacifi c Grove , CA
. pers . comm.) , ove

r 6.4 3 dbasedupon th e minimu m1 % larva

l lengt h an dmea n larva l lengt h o f 2. 7 t o 3. 6 m

man dalarva l brown rockfis h growt

h rate o f 0.1 4 mm/ d(Yoklavic h et

al
. 1996 ; Love an dJohnso n 1999) : ^TM=e^ ,4),643, = 0.407
. Th e estimate dnumbe

r o f adult blu e rockfis h complex female s (FH) whos e reproductiv e output wa s equivalent

to th e adjustednumbe

r o f larva e entraine dpe

r yea r a t DCP P range dfro

m4 3 i n 1996-9 7 t o ca . 2 0 i

n 1997-9 8 (Tabl e 5.2.4-13) . The reductio n i n th e numbe

r o f adul t female s

TENERA E9-055. 0 - 5-15 0 Fina l 316(b ) Demonstratio n Marc h 1,200 05.2. 4 Rockfishe s

estimate dfro

mth e secondsamplin g season reflect s th e loweredlarva l abundanc e durin g thi s time period
. Thes e fairly lo

w value s als o reflectedth e relativel y hig h fecundit y ofth e adult s an

dth e youn g averag e entrainmen

t ag e fo r th e larva e fro mthi s complex
. Sensitivit y Analysi s Fecundit y an dlarva l surviva l ha dth e greates t

leverag e o

n recalculate dvalue s o f

FH (Tabl e 5.2.4-14) . Varyin g fecundit y or larva l surviva l i n th e mode

l resulte di n a n FH rang e o f ca . 3

- 22 5 adul t females , compare dt o th e origina l estimate o f

18-4 3 adult

females
. Longevit

y ha dth e next greates t amoun t o f leverag e o

n recalculate dFH , whil e varyin g either entrainment

o r maturatio n ha

dn o effect o n FH . i Adult Equivalent

Loss (NEL) The parameter s usedt o formulat e AEL estimate s fo

r th e blu e rockfish complex wer e surviva l estimate s fo

r th e blu e rockfis h (Tabl e 5.2.4-15) . Early mortalit y wa s provide db

y Mar y Yoklavic h (NOAA/NMFS/PFEG , Pacifi c Grove , CA , pers . comm. ) fo r 6.4 3 t o 2 0 d(Z=0.14/d) , 2 0 t o 6 0 d(Z=0.8/d) , 6 0 to 8 0 d(Z=0.04/d) , 18 0 t o 36 5 d(Z= 0.0112/d)
. The surviva l rate fro m entrainment

ofth e larva

l stag e t o recruitmen

t int o di e fisher

y als o includedafifth stag e prior to recraitmen t

into th e fishery (Z = 0.000548/d)
. Survivorship , t o a n assume dag e a

t recraitment

into th e fishery o f

thre e years , wa s apportione dint o thes e stages , an

dAEL wa s calculate dassumin g th e entrainment

ofasingl e ag e clas s havin g th e averag e ag e of recruitment
. Estimate dnumber s o f

equivalen t adult s ofth e blu e rockfish comple x decrease db y mor

e tha n hal f betwee n th e 1996-9 7 analysi s perio d(35 3 adults ) an dth e 1997—9

8 analysi s perio d(16 4 adults : Tabl e 5.2.4-16) . Thes e value s directl y reflec t th e changin g abundanc e o f larva e durin g thi s time
. Despit e th e larg e difference s i

n th e estimate s o f

larva e fo r the blue rockfish complex betwee n thes e tw o period s (Tabl e 5.2.4-11) , th e relativel y smal l differenc e i

n estimate dadult s ma

y indicat e tha t year-to-yea

r recruitmen

t ma y b e les s variable
. Sensitivity Analysi s
TENER A E9-055. 0 5-15 1 Fina l 316(b ) Demonstratio n Marc h 1,200 0P.7 0 5.2. 4 Rockfishe s
Larva l an d juvenil e survivorship ha

dth e greates t

leverag e o

n recalculate dvalue s o f

AEL (Tabl e 5.2.4-17) . Varyin g thes e parameter s i n th e model resulte di

n a n AEL rang e o f 27-1,83 0 adul t equivalents , compare dt o th e origina l estimate o f

142-35 3 adult

equivalents
. Pre-recrui t survivorshi p ha

dth e nex t greates t leverag e o

n estimate s o f

AEL. Varying th e estimate o f entrainment

di dnot substantiall y chang e th e origina l valu e o f calculate dAEL. Empincal

Transport

Model (ETM, ) Th e length s o f

entraine dblu e rockfis h comple x larvae , excludin g di e larges t 1 % an dsmalles t 1 % o f all measurements , range dfro m2. 7 t o 4. 5 mm . Thus , larva e fro mth e centra

l 98 % ofth e length

frequency distributio n ma

y hav e bee

n susceptibl e t o entrainment fo r approximatel y 12. 8 dbased o n agrowt h rate fo r brown rockfis h o f

0.1 4 mm/ d(Lov e an

dJohnso n 1999 ; Yoklavich et al
. 1996)
. O n average , entraine dblu e rockfis h comple x larva e wer e ca . 6. 4 dold
. Monthl y estimate s o f

proportiona

l entrainment

(PE, ) i n each it h survey range dfro

maminimu

m o f zer o t o amaximu

mo f 0.037±0.02 2 (± 1 SE(PE,)) i n Apri l 199 9 (Tabl e 5.2.4-18) . Whe n bot h PE, an dth e annua

l proportio n o f

larva e extrude di

n di e it h survey perio d(fj) wer

e equa l t o zero , n o larvae wer

e collecte da

t either th e DCP P intak e stracture or

fro mth e stud

y grid
. Whe

n PE, = 0 but

f>0, larvae wer

e collecte d a

t di e DCP P intak e stracture durin g th e surve y perio dbut no t durin g th e entrainment

survey paire dwit

h th e 72-hou

r stud y gri dsurvey . Th e highes t

PE, value s occurre di

n Apri l o f bot h year s which typicall y ha

dth e highe

r associated /

values
. Th e next highes t PE, ' s occurre di

n Januar y o r February
. Thi s latte

r time fram e correspond s t o th e expecte dparturitio n fo

r blu e rockfis h (Wylli e Echeverri a1987 ; Mose r 1996) , bu t apea k later i n th e yea r als o containe dblu e rockfis h larva e (Appendix J)
. Du e t o th e broa

ddispersio n o f

blu e rockfis h comple x larva e acros s th e stud

y gri d(Figur e 5.2.4-9) , P s fo

r thi s complex wa s calculate dusin g bot h alongshor

e an donshor e current movement . Current

speedan ddirectio n measure da

t th e singl e current

mete r nea r DCP P wer e usedt o exten dth e estimate s o f P s beyondth e bound s ofth e stud y grid
. Abundanc e o f

blu e rockfis h comple x larva

e within th e stud

y gri dwa s extende dalongshor e o n th e basi s o f

current

TENERA E9-055. 0 5-15 2 Fina l 316(b ) Demonstratio n Marc h 1,200 0JV7J L 5.2. 4 Rockfishe s
spee dan ddirectio n constraine db

y averag e an

dmaximu mestimate s o f

larva l duratio n an

dth e widt h ofth e stud

y gri dperpendicula

r t o th e shore
. Th e patter

n o f larva l blu e rockfis h complex •abundanc e withi n th e stud

y gri dwa s extrapolate doffshor e usin g onshor

e current movemen t inferredfro

mth e current

meter . Th e offshor e extrapolatio n o f

abundanc e wa s als o modeledo n th e basi s o f

mea n an dmaximu mestimate dlarva

l duration s to yiel darang e o f possibl e entrainmen

t probabilit y values
. Tota l entrainmen

t mortalit y probabilit

y (P M ) wa s calculate dfo

r estimate daverag e an

dmaximu m larva l duratio n base do

n current speedan ddirectio n measure da

t th e singl e curren

t mete r (Figur e 5.2.4-13) . Ther

e wer e larg e difference s fo

r P M between th e tw o analysi s periods , bu t littl e chang e i n P M whe n varyin g larva

l duratio n withi n a

n analysi s period
. Estimate s o f P M usin g alongshor e current movemen t only varie dfro

m-0.00 4 (bot

h mea n an dmaximu mdurations ) i

n th e 1997-199 8 analysi s perio dt o -0.0 5 durin g 1998-1999
. Whe n bot h alongshor

e an donshor e current s wer

e considered , P

M rangedfro

m-0.00 1 i

n th e 1997-199 8 analysi s perio dregardles s o f duratio n t o 0.0 2 fo

r mea n duratio n an

d0.00 4 fo r maximu mduratio n i

n th e 1998-199 9 analysi s period
. Blu e rockfis h complex larva e wer e i n muc h greater abundanc e i

n bot h entrainmen

t an d stud y gri dsubsample s durin g 1998-199 9 whe n compare dt o 1997-1998
. E l Nin o condition s ma

y hav e contribute dt o th e reducednumber s o f larva e durin g 1997-1998
.

TENER A E9-055. 0 5-15 3 Fina l 316(b ) Demonstratio n Marc h 1,200 0P.7 2 5.2. 4 Rockfishe s Interpretation

of Assessment

Results Fishe s i n th e blu e rockfis h comple x hav e bot h commercia

l an drecreationa

l fisher y valu e an dca n b e relativel y abundan

t i n bot h larva l an dYO Y survey s nea

r DCP P (Figure 5.2.4-14) . Thes e data ca n b e compare dwit

h loca l fisher y catch trend s fro

mth e Morr

o Ba y are at o determin e i

f there are any concurrent

trend s i n thes e tw o indice s o f

rockfis h abundanc e (Figure 5.2.4-14) . Th e probabl e effec

t o n fisherie s i s likel y localize dt o th e port s withi n th e Morr o Ba y are asinc e mos t fishe s i n thi s complex demonstrate high site fidelity (Heilpri n 1992) , and , i n general , mos t

loca l catche s ar e landedlocally
. Long-ter

msubtida l fis h observation s a

t Diabl o Canyon' s Sout

h Contro l site (Tenera1997c ) sho w Sebastes spp . V group abundanc e characterize dby period s o f stabilit y (e.g. , 1980-1990 ) punctuate db y rapi dchange s (e.g. , 1991-1993 ) again followedb y a perio do f stabilit y (1993-1998)
. Th e overal l tren dfro m1978-199 8 appear s t o b e on e o f declinin g abundance
. Simila

r trend s were als o observe di n th e Intak

e Cov e plankto n to w data(Figure 5.2.4-12) . Loca

l catc h record s fro

mMorro Ba

y are aport s als o sho w agenerall y decreasin g tren d i n landing s sinc e 1993
. Whil e there i s apossibilit y tha t larva l entrainment

losse s a t DCP P pla y a par t i n thes e declines , it

seem s more likely , base do n th e estimate s o f

equivalent

adul t losse s an d annua l entrainment

probabilitie s fo

r thi s complex , tha

t genera l decline s i

n northerl y distribute d specie s (e.g. , blu e rockfish ) are attribute dt o aclimat e regime shif

t tha t bega n i n th e late 1970' s a s note db y Holbroo k et . al
. (1997)
. I n 1999 , 14. 6 M

T o f blu e rockfis h (Sebastes mystinus), greenstripe drockfis h (S. elongatus), treefis h (S. serriceps), vermilio n rockfis h (S. miniatus), an dyellowey e rockfis h (S. rubberimus) represente da

n ex-vesse l revenu e o f

$61,50 0 landedi

n th e Morr

o Ba y area . Blu e an

dvermilio n rockfis h represente dth e majorit y ofth e catch b

y weigh t an dals o produce dmos t

ofth e revenue . Vermilio n an

dblu e rockfis h accounte dfo r 70 % ofth e individual s capture di n th e souther

n Californi arecreationa

l fisher y i n 199 8 (PSMFC PacFin Database)
. Th e estimate s o

f AEL (142-35 3 fish) represent

th e estimate dlos s o f

3 yr oldfish t o th e population
. Convertin g thes e adul t equivalent s to direc t

losse s fro mafisher y require s assumption s o f

100 % catchabilit

y ofth e individual s an

dn o compensator

y mortality
. Bot

h o f
TENERA E9-055. 0 5-15 4 Fina l 316(b ) Demonstratio n Marc h 1,200 0P.7 3 5.2. 4 Rockfishe s thes e assumption s will lea

dto a n overestimat

e ofth e los s t

o th e fishery
. Using a

n estimat e ofth e weigh t pe r adult blu e rockfish i

n th e fisher

y o f 0. 5 kg , w e ca n estimat e tha t 34 3 adult s represen

t 172 k g o f 3 yr oldrecruit s tha

t represen t ca . 1 % ofth e catch landedi n th e Morr

o Ba y are ai n 1999
. Thi s 172 k

g o f biomas s potentially los t

to the fisher

y couldhav e bee

n wort h approximately $74 0 i n 199 9 basedo

n th e averag e ex-vesse l pric e paidi n Morr o Ba y fo r blue , greenstriped , vermilion , an

dyellowey e rockfishes , a s well a s treefish
. Fecundit y hindcas t estimate s ca

n als o b e aligne dt o th e ag e a t recruitment

usedi n AEL calculations
. Thi s i s accomplishe db y hindcastin g th e numbe

r o f female s aged12. 2 y r

(i.e. , one thir dofth e duratio n betwee

n maturit y an dlongevity ) t o th e ag e o f

AEL recruit s ( 3 yr)
. The estimate s o f

FH fro mth e dire e analysi s period s rangedfro m18-4 3 adul t

female s age d12. 2 yr . Usin g a n instantaneou s natura

l mortalit y rate (Z=0.000548/d) , th e relationship 2FH s AEL yield s 114-27 3 thre e year-ol drecruits
. Thi s aligne destimate , whe n compare dwit

h th e AEL estimate abov e (142-353) , i s simila r an dconfirm s th e validit

y ofth e parameter

estimate s use

di n bot h FH and AEL estimates
. Alternately , estimate s o f

proportiona

l larva l entrainmen

t mortalit y t o th e loca

l are aca n b e converte dt o proportionat

e losse s t o loca

l fisherie s assumin g n o compensator y mortality
. Entrainment

effect s (P

M ) range dove

r extrapolate darea s fro

m4- 6 time s an

d17-2 1 time s th e stud y gri darea , usin g mea

n an dmaximu mlarva l durations , respectively , a s th e time ove r whic h current flows wer

e measured
. Thes e extrapolation s resulte di n P M estimate s tha

t range dfro

m around0.00 1 to 0.02
. Thi s rang e o f proportiona

l loss , appliedt o th e 199 9 ex-vesse l revenu e fro m Morr o Ba y are aport s ($61,500 ) coul drepresen t betwee n $62-1,23 0 durin g tha

t year .

TENER A E9-055. 0 5-15 5 Fina l 316(b ) Demonstratio n Marc h 1,200 05.2. 4 Rockfishe s

Tabl e 5.2.4-1 . Pigmen

t groups , parturitio n pea

k period s (PPM) , an

dseasonalit

y o f preflexio n Sebastes spp . larva

e fro mNishimot o (in prep.)
. P.7 4

The cod e for eac

h grou p i s base d o n th e followin g lette r designations : V

_= lon g serie s o f ventra l pigmentatio n (start s directly a t anus ) V = shor t serie s of ventra l pigmentation (start s 3- 6 myomere s afte

r anus ) D

_= lon g serie s of dorsa l pigmentation (

4 o r mor e i n a continuou s line ) extendin g to abov e anu s D = shor t serie s o f dorsa l pigmentatio n ( 4 o r

mor e i n a continuou s line ) not

extendin g to anu s D e = elongatin g serie s o f dorsa l pigmentation ; scattere d melanophore s afte

r continuou s one s stop ) d= develop s dorsa

l pigmentation (1- 2 o

r scattere d melanophores ) P = pectora

l blad e pigmentation . p = develop s pectora

l pigmentation (1- 2 o

r scattere d melanophores )

LETTE R COD E V_ P
V_ D COMMO N '77-'8 4 SPECIE S NAM

E SUBGENUS PP M Lon g ventra l series , n o dorsal , pectora

l pigmen t S. chlorostictus greenspotte dSebastomu s ? 5
. ensifer swordspine Sebastomu s ? Lon g ventra l series , shor

tdorsa l series , n o pectora l pigmen t S. saxicola stripetai l Allosebaste s Ja n Parturition period N an d C C A (Wylli e Echeverria 1987) Apr-Se p Uncommo n i n centra l C A (Mille r an d Lea1972 ) Jan-Ma r (Nov-Mar , Phillip s 1964) V_D

_Lon

g ventra l series , shor

tdorsa l series , n o pectora l pigmen t 5
. atrovirens kel

p Mebaru s N D S. chrysomelas blac

k an dyello w Pteropodu s Fe b S. maliger

quillback

Pteropodu s Ap r S. nebulosus Chin aPteropodu s ? S. semicinctus halfbande d Allosebaste s N D N D Feb-Ma r (Jan-Ma y (Larson 1980) ) Apr-Jul y 7 Jan-Ap r fo r southemC

A (Lov e e t a . 1990 ) V D e o r V De P o r V_de p Lon g ventra l t S. auriculatus S. carnatus S. caurinus S. dalli S. rastrelliger

leries , elongatin g brow n gophe r coppe r calic o gras s dorsa

l series , pectora

l pigmen t Auctospin a Pteropodu s Pteropodu s Allosebaste s Pteropodu s June

Ma r Fe b ? N D Dec-Jan , principally May-Jul y (May
. Larso n 1980) Mar-Ma y (May , Larson 1980) Fe b Uncommo n i n centra l C A (Mille r an d Lea1972 ) N D

TENERA E9-055. 0 5-15 6 Fina l 316(b ) Demonstratio n Marc h 1.200 0P.7 5 5.2. 4 Rockfishe s Table 5.2.4-1 . (continued) . Pigmen t groups , parturitio n pea

k period s (PPM) , an

dseasonalit

y o f preflexion Sebastes spp . larva e fro mNishimoto (i

n prep.)
. LETTE R COD E V

V P

Vd p

V D SPECIE S COMMO N NAM E SUBGENU S Shor tventra l series , n o dorsa l series , n o pectora l S. aleutianus S. alutus S. brevispinis S. crameri S. diploproa S. elongatus S. macdonaldi S. miniatus S. nigrocinctus S. proriger S. rosaceus S. ruberrimus S. serriceps S. umbrosus S. wilsoni S. zacentrus roughey e

POP silvergre y darkblotche d splitnos e greenstripe d Mexican vermilio n tige r redstrip e rosy yellowey e treefis h honeycom b pygm y sharpchin Zalopy r

Acutomentum Acutomentum Eosebaste s Allosebaste s Hispaniscu s Acutomentum Rosicol a Sebastichty s Allosebaste s Sebastomu s Sebastopy r Sebastocaru s Sebastomu s Acutomentum Allosebaste s Shor tventra l series , n o dorsa l series , variou s pattern s (A tsmalle r siz e migh til tint o grou p V above ) 5 . constellatus S. eos S. goodei S. helvomaculatus S. levis S. melanostomus S. paucispinis S. rosenblatti S. rubrivinctus starr y pin k chilipeppe r rosetho m cowco d blackgil l bocacci o greenblotche d flag Sebastode s

Sebastomu s Sebastode s Sebastomu s Hispaniscu s Eosebaste s Sebastode s Sebastomu s Hispaniscu s '77-'8 4

PPM N D Ma r N D Ja n Jul y Ma y N D Se p N D 7 Jun e June N D N D N D 7 Parturitio n perio d N an d C C A (Wylli e Echeverri a 1987 )
Jan-Ma r (? ) Nov-Ma r (Nov-Mar , Larson 1980 ) Jan-Sep (Feb-July , Phillip s 1964 ) May-July Se p (Nov , Mose r 196 ; Nov-Mar , Phillip s 1964 ) July-Au g Apr-Jul y Apr-July (? ) N D May-June o f pectora l pigmentatio n Ap r N D Ja n 7 De c Fe b Feb N D 7 Shor tventra l series , develop s dorsa l series , develop s variou s (A tstag e 1-

2 ca n ( S. entomelas S. flavidus S. melanops S. mystinus S. rufus S. serranoides Apr-Ma y N D Nov-Jun e (Nov-Mar , Phillip s 1964 ) May-Jun e Dec-Fe b Feb-Ap r Jan-Ma y (Nov-Mar , Mose r 1967 ) N D Jul y pattern s o f

pectora l pigmentatio n :onfus e wit

h V P abov e du e t o lac

k o f dorsa l pigmentation. ) wido w yellowtai l blac k blu e ban k oliv e Shor tventra l series , shor tdorsa l S. aurora S. babcocki S. gilli S. hopkinsi S. jordani S. ovalis S. pinniger auror a redbande d bronzespotte d squarespot shortbell y speckle d canar y Specie s withou tdescription s o r illustration s

S. phillipsi chameleo n Acutomentum Sebastosomu s Sebastosomu s Sebastosomu s Acutomentum Sebastosomu s serie s Eosebaste s Rosicol a Sebastosomu s Acutomentum Sebastode s Acutomentu m Rosicol a ? ? Feb

Feb Feb Ja n Fe b Fe b Apr Ma y 7 Ma r Fe b Ma y De c Dec-Ap r (Nov-Mar , Phillip s 1964 ) Jan-Jul y (Nov-Mar , Phillip s 1964 ) Jan-Ma y Nov-Jan (Nov-Jan , Wale s 1952 ) Dec-May Jan-Ma r Mar-Ma y Ma y Uncommo n i

n centra l CA (Mille r an

d Lea 1972 ) Feb-Ma r Feb-Ap r (Nov-Apr , Phillip s 1964 ) Ma y Dec-Ma r (Nov-Mar , Mose r 1967 ) Uncommo n in centra

l C A (Mille r an

d Le a 1972 )

TENER A E9-055. 0 5-15 7 Fina l 316(b ) Demonstratio n Marc h 1,200 0P.7 6 5.2. 4 Rockfishe s
Tabl e 5.2.4-2
. Estimate dtota l annua l entrainmen

t (E T ) an dstandar derro r (SE(E T )) fo r KG B rockfis h larva

e (Sebastes spp . V_De/V_D_ ) fro mthre e analysi s periods
. Analysi s Peritf

d E~ T

SE(E~ T

) 1 ) Oc t 23 , 1996-Sep 30 , 199

7 268,000,00 0 24,000,00 0 2 ) Octl , 1997-Sep30 , 199 8 199,000,00 0 25,900,00 0 3 ) Jul y 1 , 1997-Jun e 30 , 199 8 199,000,00 0 25,900,00 0

Tabl e 5.2.4-3
. Estimate dtotal annua l adjustedentrainment

(E Adj

_ T ) an dstandar derro r (SE(E AdJ

_T ) ) fo r KG B rockfis h larva

e (Sebastes spp . V_De/V_D_) fro mth e thre e analysi s periods
. Analysi s Perio d

1 ) Oc t 23 , 1996-Sep 30 , 1997 2 ) Oc t I,1997-Sep30 , 199 8 3 ) Jul y 1 , 1997-Jun e 30 , 199 8 pAdj-T 275,000,00 0 222,000,00 0 222,000,00 0 SP{pAdj. T ) 24,700,00 0 28,900,00 0 28,900,00 0

TENERA E9-055. 0 5-15 8 Fina l 316(b ) Demonstratio n Marc h 1,200 0P.7 7 

# I I 5.2. 4 Rockfishe s

Tabl e 5.2.4-4
. Age a

t sexua l maturatio n an

dlongevit y (years ) fo

r thre e rockfish specie s withi

n th e KG B complex
. Rockfish specie s Maturatio n ag e Longevit y ke, P A e. 3

4- 5 vr-* blac k an dyello w gophe r 3^yr* 2

6yr 4 4yr 2 9yr 4 15yr>A 5

1 5 yr *
'Burg e an dSchult z 197 3 2 Wylli e Echeverri a1987 ^Bloese r 199 9 4 Leaetal
. 199 9 ^Ralph Larson , CS U Sa

n Francisco , persona

l communicatio n
Tabl e 5.2.4-5
. Estimate dnumbe r o f adult KG B rockfish (Sebastes spp . V_De/V_D_ ) female s ( FH ) whos e reproductiv e output wa s equivalen

t t o th e adjustednumbe

r o f larva e entraine dpe

r yea r ( E Adj

_ T ) a t Diabl o Canyon Powe

r Plan t including th e standar

derro r ofth e estimat

e (SE(FH)) an

d90 % confidenc e limit s (C.L.)
. Analysi s Perio d FH SE(FH) Uppe r Lowe

r 90 % C.L
. 90 % C.L
. 1 ) Oc t 23 , 1996-Se

p 30 , 1997 2 ) Octl , 1997-Sep30 , 199 8 3 ) Jul I,1997-Jun30 , 199 8 61 7 49 7 49 7 1,47 0

1,19 0 1,19 0 31,50 0

25,40 0 25,40 0 1 2

1 0 1 0

TENER A E9-055. 0 5-15 9 Fina l 316(b ) Demonstratio n Marc h 1,200 05.2. 4 Rockfishe s

Tabl e 5.2.4-6
. KG

B rockfishe s (Sebastes spp . V_De/V_D_) : Sensitivit y analysi s fo

r FH fro m th e thre e analysi s period s recalculate dfo r each mode

l inpu t paramete r (ff): E

AdJ

_ r ± 1.64 5 SE(ff) ; other

parameter s are Q. e ±\(*scv(d) w her e CV(ff) = 1. 0 or 100%
.
a ) Analysi s Perio d1 : Octobe r 1 , 1996-September30 , 1997
Paramete r FH E ^Adj-T S larvae #Eggs/yr Longevit y Maturatio n Estimat

e

= 61 7 275,000,00 0 0.41 9 213,00 0 1 5 5 Minimu

m
52 6 25 8 11 9 24 7 49 3 Recalculate dFH

Maximu m
70 8 3,20 0 3,20 0 1,23 0 1,23 0 Rang e

18 2 2,94 0 3,08 0 98 7 74 0
b ) Analysi s Perio d2 : Octobe r 1 , 1997-September

30 , 199 8
Parameter FH E ^Adj-T S larvae # Eggs/yr Longevit y Maturatio n Estimate

= 49 7 222,000,00 0 0.41 9 213,00 0 1 5 5 Minimu

m 39 1 20 8 95. 9 199 39 8 Recalculate dFH

Maximu m 60 3 2,57 0 2,57 0 99 4 99 4 Rang e

213

- 2,37 0 2,48 0 79 5 59 6 

# I I

TENERA E9-055. 0 5-160 Fina l 316(b ) Demonstratio n Marc h 1.200 0j ^ 9 5.2. 4 Rockfishe s

Tabl e 5.2.4- 6 (continued) . KG B rockfishe s (Sebastes spp . V_De/V_D_) : Sensitivit y analysi s fo r FH fro mth e thre e analysi s period s recalculate dfo r eac h mode l inpu t paramete r (ff): E

Adj

_ T ± 1.64 5 SE(ff); othe

r parameter s ar

e g. e ±\MSCv0) w her e CV( ff) = 1. 0 or 100%
. c ) Analysi s Perio d3 : Jul y 1 , 1997-Jun e 30 , 199 8

Paramete r FH pAdj-T S larvae #Eggs/y r Longevit y Maturatio n Estimat e

= 49 7 222,000,00 0 0.41 9 213,00 0 1 5 5 Minimu m

39 1 20 8 9 6 19 9 39 8 Recalculate dFH

Maximu m
60 4 2,58 0 2,58 0 99 5 99 5 Rang e

21 3 2,37 0 2,48 0 79 6 59 7

TENER A E9-055. 0 5-16 1 Fina l 316(b ) Demonstratio n Marc h 1,200 0P.8 0 5.2. 4 Rockfishe s
Tabl e 5.2.4-7 . Three-yea r survival fo r th e KGB rockfis h comple x larvae (Sebastes spp . V_De/V_D_) , base d o n blu e rockfis h data . Survival wa s estimate d fro m releas e a s S = e (-2)(Day(end)-Day(start)) ; Dai] y instantaneou s mortalit y rate s (Z) u

p t o 1 y r o f

blu e rockfish , Sebastes mystinus, larvae tha twer e use d t o calculat e KG B larva l survivorshi p wer e provide d b y Mar

y Yoklavic h (NOAA/NMFS/PFEG , Pacifi c Grove , CA , persona l communication) . Annua

l instantaneou s mortalit

y wa s assume d a s 0.2/y r after 1 yr . Averag e ag e o f entrainmentwa s estimate d a s 6.2 1 d base d o n averag e siz e a tentrainmentan

d a growt h rat e o f 0.1 4 mm/

d (Yoklavic h e tal . 1996) .

Instantaneou s Natura l Da y (start) Da y (end) Mortalit y (Z ) Survival (s) 0 6.2 1 2 0 6 0 18 0 36 5 6.2 1

2 0 6 0 18 0 36 5 1,09 5 0.1 4

0.1 4 0.0 8 0.0 4 0.011 2 0.000 6 0.41 9

0.14 5 0.04 1 0.00 8 0.12 6 0.67 0

Tabl e 5.2.4-8 . Estimate d number o f equivalen tKGB rockfis h (Sebastes spp . V_De/V_D_ ) adults ( AEL ) equa

l t o th e adjuste d number o f larvae entraine d per yea r (E Adj

_ T ) a tDiabl o Canyo n Powe r Plan

tincludin g th e standar

d erro r ofth e estimat e (SE(AEL) ) an d 90 % confidenc e limit s (C.L.) . Analysi s Perio d AEL Uppe r Lowe r SE(AEL) 90 % C.L . 90 % C.L . 1 ) Oct23 , 1996-Se p 30 , 199 7 2 ) Oct1 , 1997-Sep30 , 199 8 3 ) Ju l 1 , 1997-Jun30 , 199 8 1,12 0 90 5 90 6 3,41 0

2,75 0 2,75 0 166,00 0

134,00 0 134,00 0 8

6 6

TENER A E9-055. 0 5-16 2 Fina l 316(b ) Demonstratio n Marc h 1,200 0j»a i 5.2. 4 Rockfishe s
Tabl e 5.2.4-9 . KG

B rockfishe s (Sebastes spp . V_De/V_D_) : Sensitivit y analysi s fo

r AEL fro m th e thre e analysi s period s recalculate dfo r eac h mode l inpu t paramete r (ff): E

Adj

_ T ± 1.64 5 •SE(ff) ; othe

r parameter s ar

e Q. e ±\MSCV0) wher

e CV(ff) = 1.

0 or 100%
. a ) Analysi s Perio d1 : Octobe r 1 , 1996-Septembe

r 30 , 1997
Paramete r 'AEL = ^Adj-T S early larvae S late larvae S early juvenile S juv. I S pre-recruit Estimat e

1,120 275,000,00 0 0.14 5 0.040 8 0.0082 3 0.125 0.67 0 Minimu m

95 8 21 7 21 7 21 7 21 7 21 7 Recalculate dAEL

Maximu m 1,29 0 5,82 0 5,82 0 5,82 0 5,82 0 1,68 0 Rang e

33 1 5,60 0 5,60 0 5,60 0 5,60 0 1,46 0

b ) Analysi s Perio d2 : Octobe r 1 , 1 997-Septembe

r 30 , 199 8
Paramete r AEL '-•Adj-T S early larvae S late larvae S early juvenile S juv. I S pre-recruit Estimat e

= 90 5 222,000,00 0 0.14 5 0.040 8 0.0082 3 0.12 5 0.67 0 Minimu m

71 2 17 5 17 5 17 5 17 5 17 5 Recalculate dAEL

Maximu m 1,100 4,69 0 4,69 0 4,69 0 4,69 0 1,35 0 Rang e

38 7 4,52 0 4,52 0 4,52 0 4,52 0 1,18 0 

# 1 I TENER A E9-055. 0 5-16 3 Fina l 316(b ) Demonstratio n Marc h 1,200 0P.8 2 5.2. 4 Rockfishe s
Tabl e 5.2.4- 9 (continued) . KG B rockfishe s (Sebastes spp . V_De/V_D_) : Sensitivit y analysi s fo r AEL fro mth e thre e analysi s period s recalculate dfo r each model input

parameter

(ff): P-Adj-T ± 1 -64 5 SE(ff); other

parameter s ar

e g. e ±.M5Cvm w her e CV( ff) = 1. 0 or 100%
. '
c ) Analysi s Perio d3 : Jul y 1 , 1997-Jun e 30 , 199 8

Parameter

' AEL- ^Adj-T S early larvae S late larvae S early juvenile S juv. I S pre-recruit Estimate

= 90 6 222,000,00 0 0.14 5 0.040 8 0.0082 3 0.12 5 0.67 0 Minimu

m
71 2 17 5 17 5 175 17 5 17 5 Recalculate dAEL

Maximu m 1,10 0 4,70 0 4,70 0 4,70 0 4,70 0 1,35 0 Rang e

38 7 4,52 0 4,52 0 4,52 0 4,52 0 1,18 0

TENERA E9-055. 0 5-16 4 Fina l 316(b ) Demonstratio n Marc h 1,200 0P.8 3 

## •p— r 5.2. 4 Rockfishe s



### Tabl e 5.2.4-10
. KG

B rockfishe s (Sebastes spp . V_De/V_D_) : Monthl y estimate s o f

proportiona

l entrainment

(PE , ) an d annua l proportio n o f

larva e extrude di

n th e hh surve

y perio d(fj) an

d associate dstandar

derror s (SE~) use di

n estimatin g entrainment

mortalit y fo r tw o analysi s periods
. a ) Analysi s Perio d3 : Jul y 1 , 1997 - Jun e 30 , 199 8 Surve y Star t Dat e PE, 

### SE[PE,) 

## f

b ) Analysi s Perio d4 : Jul y 1 , 199 8 - Jun e 30 , 199 9 Survey Star

t Dat e PE, SE ( ^ ) 

### ft 

## SP{f) Ju l 21,199 7 Au g 25 , 199 7 Sep t 29 , 199 7 Oc t 20 , 199 7 No v 17 , 199 7 De c 10 , 199 7 Ja n 22 , 199 8 Fe b 26 , 199 8 Ma r 18 , 199 8 Ap r 15 , 199 8 Ma y18 , 199 8 Ju n 8 , 199 8 0.010 7



### 0 0 0 0 0 0.00081 0 0.0020 7 0.058 7 0.0076 2 0.0033 7 0.035 3 0.015 1



### 0 0 0 0 0 0.00088 0 0.0012 7 0.029 7 0.0034 8 0.00076 0 0.0084 2 0.0025 7



### 0 0 0 0 0 0.0012 2 0.0040 3 0.081 6 0.13 0 0.48 7 0.29 3 0.00056 0



### 0 0 0 0 0 0.00019 0 0.00037 0 0.0096 1 0.010 2 0.024 9 0.016 6 

### SP(f) Ju l 21 , Au g 26 , Sep t 16 , Oc t 6 , No v 11 , De c 9 , Ja n 12 , Fe b 3 , Ma r 17 , Ap r 14 , Ma y24 , Ju n 23 , 199 8 199 8 199 8 199 8 199 8 199 8 199 9 199 9 199 9 199 9 199 9 199 9 0.0033 0



### 0 0 0 0 0 0 0.00046 0 0.032 7 0.013 7 0.011 5 0.017 0 0.0034 5



### 0 0 0 0 0 0 0.00046 0 0.019 8 0.0075 2 0.0026 2 0.012 5 0.00078 0



### 0 0 0 0

' 0 

### 0 0.00063 0 0.17 5 0.20 4 0.54 5 0.075 4 0.00013 0



### 0 0 0 0 0 0 0.00012 0 0.015 6 0.015 4 0.016 6 0.0053 3

TENER A E9-055. 0 

### 5-16 5 Fina l 316(b ) Demonstratio n Marc h 1,200 0P.8 4 5.2. 4 Rockfishe s
Tabl e 5.2.4-11
. Estimate dtota l annua l entrainment

(E T ) an dstandar derro r ( SE(E T ) ) fo r larva e ofth e blu e rockfis h comple x (Sebastes spp.V/S. mystinus) fro mth e thre e analysi s periods
. Analysi s Perio d PT SE(E T ) 1 ) Oc t 23 , 1996-Sep 30 , 1997 2 ) Octl,1997-Sep30 , 199 8 3 ) Jul 1 , 1997-Jun30 , 199 8 49,700,00 0 5,410,00 0 6,220,00 0 7,940,00 0

855,00 0 868,00 0

Tabl e 5.2.4-12
. Estimate dtota l annua l adjuste dentrainment

(E Adj

_ T ) o f blu e rockfis h comple x larva e (Sebastes spp.V/5
. mystinus) an dthei r standar derror s (SE(E

AdJ

_ T )) fromth e thre e analysi s periods
. Analysi s Perio d -Adj-T SP(pAdJ-T)

1 ) Oc t 23 , 1996-Sep 30,199 7 2 ) Octl,1997-Sep30 , 199 8 3 ) Ju l I,1997-Jun30 , 199 8 84,040,00 0 33,800,00 0 38,900,00 0 13,400,00 0

5,350,00 0 5,430,00 0 Tabl e 5.2.4-13
. Estimate dnumbe r o f adul t blu e rockfis h comple x (Sebastes spp.V/S
. mystinus) female s ( FH

) whos e reproductiv e output wa s equivalent

t o th e adjustednumbe

r o f larvae entraine dpe

r year(E

Adj

_ r) a t Diabl o Canyon Powe

r Plant includin g th e standar

derro r ofth e estimate (SE(FH)) and90 % confidenc e limit s (C.L.)
.

Analysi s Perio d FH SE(FH) Uppe r Lowe

r 90 % C.L
. 90 % C.L
. 1 ) Oc t 23 , 1996-Sep 30 , 1997 2 ) Octl , 1997-Sep30 , 199 8 3 ) Jul 1 , 1997-Jun30 , 199 8 

### 4 3 1 8 2 0 9 7

3 9 4 5 1,70 0



### 68 4 78 7 1

0 1

TENERA E9-055. 0 5-16 6 Fina l 316(b ) Demonstratio n Marc h 1,200 0P.8 5 5.2. 4 Rockfishe s
Tabl e 5.2.4-14
. Blu e rockfis h complex (Sebastes spp.V/S
. mystinus): Sensitivit y analysi s fo

r FH fro mth e thre e analysi s period s recalculate dfo r each model inpu

t paramete r (ff): E

Adj

_ T ± 1.64 5 SE(ff) ; other

parameter s ar

e g. e ±i-M5CV(0) wher

e CV(ff)= 1.

0 or 100%
.
a ) Analysi s Perio d1 : Octobe r 1 , 1996-Septembe

r 30,199 7
Paramete r FH E ^Adj-T S larvae #Eggs/y r Longevit y Maturatio n Estimate

= 4 3 84,000,00 0 0.407 509,00 0 24. 7 6 Minimu

m 54. 9 17. 7 8.3 9 18. 7 64. 0 Recalculate dFH

Maximu m .32. 0 22 5 22 5 86. 9 37. 5 Rang e

2 3 20 8 21 7 68. 2 26. 5

b ) Analysi s Perio d2 : Octobe r 1 , 1997-Septembe

r 30 , 199 8
Paramete r FH E ^Adj-T S larvae #Eggs/y r Longevit y Maturatio n Estimat

e

= 1 8 33,800,00 0 0.407 509,00 0 24. 7 6 Minimu

m 22. 1 7.1 2 3.3 8 7.5 4 25. 8 Recalculate dFH

Maximu m 13. 0 90. 7 90. 7 35. 0 15. 1 Rang e

9.1 0 83. 6 87. 3 27. 5 10. 7

TENER A E9-055. 0 5-16 7 Fina l 316(b ) Demonstratio n Marc h 1,200 0P.8 6 5.2. 4 Rockfishe s
Tabl e 5.2.4-1 4 (continued) . Blu e rockfis h complex (Sebastes spp.V/S
. mystinus): Sensitivit y analysi s fo

r FH fro mth e thre e analysi s period s recalculate dfo r each model inpu

t paramete r ( 0) : E

Adj

_ T ± 1.64 5 SE(ff); other

parameter s are

ff. e ±x <*5cr(0 ) w h e r e CV( 0) = 1.

0 o r 100%
.
c ) Analysi s Perio d3 : Jul y 1 , 1997-Jun e 30 , 199 8

Paramete r FH pAdj-T S larvae #Eggs/yr Longevit y Maturatio n Estimate

= 2 0 38,900,00 0 0.40 7 509,00 0 24. 7 6 Minimu

m
24. 7 8.1 8 3.8 8 8.67 29. 6 Recalculate dFH

Maximu m .15. 5 10 4 10 4 40. 3 17. 3 Rang e

9.2 3 96. 1 10 0 31. 6 12. 3

TENERA E9-055. 0 5-16 8 Fina l 316(b ) Demonstratio n Marc h 1,200 0

# IT T 5.2. 4 Rockfishe s

Tabl e 5.2.4-15
. Thre e yea

r surviva l fo r the blue rockfish complex (Sebastes spp . VIS. mystinus) larvae
. Surviva

l wa s estimate dfro

mreleas e a s S=e^~ ' ' ov(e " ' " a}is "'r '>)
. Daily instantaneou s mortalit y rate s (Z) u

p t o 1 y r o f blu e rockfish , Sebastes mystinus, larvae tha t wer e usedto calculate larva

l survivorship wer

e provide db

y Mar y Yoklavich (NOAA/NMFS/PFEG , Pacifi c Grove , CA , persona

l communication)
. Annua

l instantaneou s mortalit

y wa s assume da s 0.2/y

r afte r 1 yr . Averag e ag e o f

entrainmen

t wa s estimate da s 6.4 3 d , basedo n averag e siz e a

t entrainment

an dagrowt h rat e o f 0.1 4 mm/d
.
Da y (start ) 0 6.4 3 2 0 6 0 180 36 5 Da

y (end ) 6.4 3 2 0 6 0 180 36 5 1,095 Instantaneou s Natura l Mortalit y (Z ) 0.1 4 0.1 4 0.0 8 0.0 4 0.01 1 0.000 6 Surviva

l (S ) 0.406 6 0.15 0 0.04 1 0.00 8 0.12 6 0.670 3

TENER A E9-055. 0 5-16 9 Fina l 316(b ) Demonstratio n Marc h 1,200 0P.8 8 5.2. 4 Rockfishe s

Tabl e 5.2.4-16 . Estimate dnumbe r o f equivalent

blu e rockfis h complex (Sebastes spp.V/S. mystinus) adult s (

AE L ) equa l t o th e adjuste dnumbe

r o f larva e entraine dpe

r yea r (E AdJ

_ r) a t Diabl o Canyo n Powe

r Plant includin g th e standar

derro r ofth e estimate (SE(AEL)) and90 % confidenc e limit s (C.L.)
.

Analysi s Perio d AEL ^ Uppe r Lowe

r SE(AEL) 90 % CL
. 90 % C.L
. 1 ) Oc t 23 , 1996-Sep 30 , 1997 2 ) Octl,1997-Sep30 , 199 8 3 ) Jull,1997-Jun30,199 8 35 3 16 4 14 2 1,100

49 4 43 0 51,00 0

23,50 0 20,00 0 2

1 1

Tabl e 5.2.4-17 . Blu e rockfis h comple x (Sebastes spp . V/S. mystinus): Sensitivit y analysi s o f AEL fro mth e thre e analysi s period s recalculate dfo r eac h model inpu

t parameter

(ff): E Adj

_ T ±1.645- SE(0) ; other

parameter s ar

e 0 • e ±lM5cy/lS) wher

e CV( 0 ) = 1.

0 or 100%
.
a ) Analysi s Perio d1 : Octobe r 1 , 1996-September

30 , 1997
Paramete r

AEL •• PAdj-T S early larvae S late larvae S early juvenile S juv. I S pre-recruit Estimat e

= 35 3 84,000,00 0 0.15 0 0.040 8 0.0082 3 0.12 5 0.67 0 Minimu m

26 0 6 8 6 8 6 8 6 8 6 8 Recalculate dAEL

Maximu m
44 6 1,83 0 1,83 0 1,83 0 1,83 0 52 7 Rang e

18 6 1,76 0 1,76 0 1,76 0 1,76 0 45 9

TENER A E9-055. 0 5-17 0 Fina l 316(b ) Demonstratio n Marc h 1,200 0P.8 9 5.2. 4 Rockfishe s
Tabl e 5.2.4-1 7 (continued) . Blu e rockfish complex (Sebastes spp.V/S
. mystinus): Sensitivit y analysi s o f

AEL fo r th e thre e analysi s period s recalculate dfo r eac h mode l inpu t paramete r (ff): E Adj

_ T ± 1.64 5 • SE(0); othe

r parameter s ar

e ff • <?* ' M5<:v <* > wher e CV ( ff) = 1.

0 or 100%
.
c ) Analysi s Perio d3 : July 1 , 1996-Septembe r 30 , 199 7

Paramete r AEL = PAdj-T S early larvae S late larvae S early juvenile S juv. I S pre-recruit Estimat e

= 16 4 38,900,00 0 0.15 0 0.040 8 0.0082 3 0.12 5 0.67 0 Minimu m

12 6 3 2 3 2 3 2 3 2 3 2 Recalculate dAEL

Maximu m

20 1 84 8 84 8 84 8 84 8 24 4 Rang e

7 5 81 6 81 6 81 6 81 6 21 3

b ) Analysi s Perio d2 : Octobe r 1 , 1997-Septembe

r 30 , 199 8
Paramete r AEL = PAdj-T S early larvae S late larvae S early juvenile S juv. I S pre-recruit Estimat e

14 2 33,800,00 0 0.15 0 0.040 8 0.0082 3 0.12 5 0.67 0 Minimu m

10 5 2 7 2 7 2 7 2 7 2 7 Recalculate dAEL

Maximu m
17 9 73 7 73 7 73 7 .73 7 21 2 Rang e

7 4 71 0 71 0 71 0 71 0 18 5

TENER A E9-055. 0 5-17 1 Fina l 316(b ) Demonstratio n Marc h 1,200 0P.9 0 5.2. 4 Rockfishe s
Tabl e 5.2.4-18 . Blu e rockfis h comple x (Sebastes spp./S
. mystinus): Monthly estimate s o f proportiona

l entrainment

(PE, ) an d annua l proportio n o f

larva e extrude d i

n th e ith survey perio d (f) an d associate d standar

d error s (SE) used i

n estimatin g entrainment

mortalit y fo r tw o analysi s periods
. a ) Analysi s Perio d 3 : Jul y 1 , 199 7 - Jun e 30 , 199 8 Surve y Star t Dat e PE : SE(PE,) 

## f

a ) Analysi s Perio d 4 : Jul y 1 , 1998-Jun e 30 , 1999 Surve y Star t Dat e PE, SE ( * ) 

### f, SE(f) Ju l 21 , 199 7 Au g 25 , 199 7 Se p 29 , 199 7 Oc t 20 , 199 7 No v 17 , 199 7 Dec . 10,199 7 Ja n 22 , 199 8 Fe b 26 , 199 8 Ma r 18 , 199 8 Ap r 15 , 199 8 Ma y18 , 199 8 Ju n 8 , 199 8 0.0010 5

0.0012 5 0 0 0 0 0.00077 0 0 0.00090 0 0.0041 6 0.00040 0 0.00081 0 0.00051 0

0.00080 0 0 0 0 0 0.00030 0 0 0.00092 0 0.0029 4 0.00021 0 0.00059 0 0.12 7

0.043 9 0 0.012 9 0 0 0.16 1 0.15 1 0.054 6 0.23 8 0.12 9 0.082 6 0.011 3

0.0060 6 0 0.0034 7 0 0 0.013 3 0.013 0 0.0089 2 0.028 1 0.014 1 0.015 0 

### SP(f) Ju l 21,199 8 Au g 26 , 199 8 Se p 16 , 199 8 Oc t 6 , 199 8 No v 11 , 199 8 De c 9 , 199 8 Ja n 12 , 199 9 Fe b 3,199 9 Ma r 17 , 199 9 Ap r 14 , 199 9 Ma y24 , 199 9 Ju n 23 , 199 9 0.00042 0

0 0 0 0 0 0.0052 1 0.0082 2 0 0.037 0 0.00059 0 0.00025 0 0.00043 0

0 0 0 0 0 0.0029 1 0.0021 3 0 0.021 8 0.00031 0 0.00025 0 0.0038 9

0 0 0 0 0 0.18 1 0.49 5 0 0.30 8 0.0079 1 0.0035 2 0.00055 0

0 0 0 0 0 0.016 9 0.020 9 0 0.022 5 0.00076 0 0.00075 0

TENER A E9-055. 0 5-17 2 Fina l 316(b ) Demonstratio n Marc h 1.200 0P.9 1
5.2. 4 Rockfishe s

^_ . U J OT
••J**** - + EDensityMean 1.0 - 0.9 - 0.8 - 0.7 - 0.6 - 0.5 - 0.4 - 0.3 - 0.2 - 0. 1 - o.o - itimfitiiri*"' ! 

## I ' KG B rockfis h complex (Sebastes spp. )

rimimminnntmr n lllll|IIIIIIUI|lll|llllllll|lllllllllll l 

### J 

# ll

. |O|N|D|J|F|M|A|M|J|J|A|S|O|N|D|J|F | I 109 6 I 100 7 im i n n i I II I III1111111 1 II I II111II111 1 II I 11II11111 1 1 II I III111 1 II I I II I 111111 1 I I iinii n A M J J A I S 0| N | D | J | F PTAT^ I Surve y Dat e

• designatessurveywtthdensrty= 0
Figur e 5.2.4-1
. Weekl

y mea n larva l densit y (#/m 3 + 1 S.E. ) a

t th e DCP P intake
.

TENER A E9-055. 0 5-17 3 Fina l 316(b ) Demonstratio n Marc h 1,200 0H

r n z m 

## H m t o o U l O l

V J >

3 S L w J 5

N ) 3 O =* . O O O 3 Kelp , gopher , black-and-yello w (KGB ) rockfis h comple x (Sebastesspp
. V_De/V_D_ )

c o 

# E 4. 0 3. 5 3. 0 2. 5 2. 0 1. 5 1. 0 0. 5 0. 0

Dept h Contour s

— —2 0 meter s
—•— • 4 0 meter s
•—• —6 0 meter s Poin t Bucho n

DCP P Intake

Poin t Sa n Lui s

Jul . 21,'9 7 Aug

. 25 , "9 7 Sep . 29,'9 7 Oct

. 20,'9 7 Nov

. 17 , '9 7 Dec . 10,'9 7
Figur e 5.2.4-2a . Mea

n larva l densit y (fl/m 1 ) collecte d in the DCP P stud y gri d cell s an d a tth e entrainmen

tsamplin g location . t n k > i > Ti o o 

### § tn 3" , « 0 0 1m

z m m C O o O l W I

- J O l

5 ' w 2 D B ) C D " 3 

## s- 1 -J - C O r o 3 O a : o o O 3 Kelp , gopher , black-and-yello w(KGB ) rockfis h comple x (Sebastesspp . V_De/V_D_ )

C O 

# E 4. 0

3. 5 3. 0 2. 5 2. 0 1.5 1. 0 0. 5 0. 0

Dept h Contour s

—'— • 2 0 meter s

• —4 0 meter s ^^— 6 0 meter s Poin t Bucho n

DCP P Intak

e

Poin t Sa n Lui s

Jan . 22,'9 8 Feb . 26,'9 8 Mar . 18,'9 8 Apr . 15 , '9 8 Ma y 18,'9 8 Jun . 8,'9 8 Figur e 5.2.4-2 b (continued) . Mean larva l densit y (ti/m*) collecte di

n th e DCP P study gri dcell s an da t th e entrainmen t

samplin g location
. tt ZT C D Wm

z m 

## H m t o 6 U l U l b

-> i c n

3 D > C O a.

0 ) C D 

# H

- ^ * M D S o cr. o o O 3 Kelp , gopher , black-and-yello w (KGB ) rockfis h complex (Sebastesspp
. V_DeA/_D J

C O 

# E 4. 0

3. 5 3. 0 2. 5 2. 0 1. 5 1. 0 0. 5 0. 0

Dept h Contour s
n 2 0 meter s

—4 0 meter s mmmm 6 0 meter s Bucho n

DCP P Intake

Poin t Sa n Lui s

Jul . 20 , '9 8 Aug . 25 , '9 8 Sep . 15 , '9 8 Oct . 5 , '9 8 No v 10 , '9 8 Dec . 8 , '9 8 

### Figur e 5.2.4-2c (continued) . Mea n larva l densit y (#/m 3 

### ) collectedi

n the DCP P stud y gri dcell s an

da t th e entrainmen

t samplin g location
. U l k » J u 3 0 o o C O 3 " » ' Vt

u

c o J* *r n

z m
m < o

. o c n U l b

^ i ~> i

3 E U C O C O I r C D

- » C O N ) C O o cr. o o o 3 Kelp , gopher , black-and-yello w(KGB ) rockfis h comple x (Sebastesspp . V_DeA/_D_ )

C O 

# E 4. 0

3. 5 3. 0 2. 5 2. 0 1. 5 1. 0 0. 5 0. 0

Dept h Contour

s

— — - 2 0 meter

s

— • 4 0 meter

s M M M 6 0 meter

s Poin t Bucho n

DCP P Intak e

Poin t Sa n Lui s

Jan . 11 , '9 9 Feb . 2 , '9 9 Mar . 16 , '9 9 Apr . 13 , '9 9 May 23 , '9 9 Ju n 22 , '9 9
Figur e 5.2.4-2 d (continued) . Mean larva l densit y (ft/m 1 ) collecte di n th e DCP P study gri dcell s an d at th e entrainmen t

samplin g location
. 

## 5
vtP.9 6 5.2. 4 Rockfishe s

KG B rockfis h comple x (Sebastes spp . V_D e /

V_D J N = 9,92 6

0 ) o c 

### £

= 3 

### u u O 

### u c Q J 3 O " 0 ) c O 9) 0
. Media n 

# J

2. B 3. 3 3. 6 4. 3 4. S S. 3 S. B "-( B "•*>•" > s . e **•*>•

* Lengt h Categor

y (mm )
-—i—•—i—•—i—•—i—• — 2 4 e B 1 Estimate d ag e (days ) i • i • i • i • i "~~i • i • i r-— i • i i i i O Z A 6 B I O 1 2 1 4 1 6 . I S »*.« V
Figur e 5.2.4-3 . Lengt

h frequenc y o f

all measure dlarva

l fish collecte di

n th e entrainment samples
. Minimum , median , mean , maximum , an dcentra l 98 % ofth e larva

l length s ar

e noted
. X-axi s scal e i s not

continuou s a

t large r lengths
.

TENERA E9-055. 0 5-17 8 Fina l 316(b ) Demonstratio n Marc h 1.200 0P.9 7 5.2. 4 Rockfishe s

15 "

10 "

0 ) O c C D
3 o o O KG B rockfis h comple x (Sebastes

spp . V_D e /

V_D_ )
Entrainment : N=1,28 2 MeanMedia n Mi n

> > " 15 " c C D D c r c c

c C D u C D 0 . 5 "

2. 3 1 %

T *+++ 

# ia l 

# l l 99 %

+m* 2. 3 2. 8 3. 3 3. 8 4. 3 4. 8 Grid : N=2,85 0 Media n Mea n 5. 3

Mi n 1 %



# ^fill l 99 % 

# l l l i IWL* . 2. 8 3. 3 3. 8 4. 3 4. 8 Lengt h Categor

y (mm ) 5. 3 Ma x

T T

Max

T T T

Figure 5.2.4-4 . Lengt

h frequency o f

measuredfish fro

mentrainmen

t survey s tha

t paire d wit

h gri dsurvey s (bot

h year s combined)
. Minimum , median , mean , maximum , an dcentra l 98 % ofth e larva l length s ar

e noted
. X-axi s scal e i s not

continuou s a

t large r lengths
. TENER A E9-055. 0 5-17 9 Fina l 316(b ) Demonstratio n Marc h 1,200 0P.9 8
5.2. 4 Rockfishe s

*~* U J C O 1 + %(#/ ^ C A c C D QMean 0.4 8 — 0.4 4 — 0.40- 1 0.3 6 ~ E 0.3 2 — 0.2 8 — 0.24- 5 ~ 0.2 0 — 0.1 6 — 0.1 2 A O.OB~= 0.0 4 — o.oo— •

. KG B rockfis h complex (Sebastes spp. )
• 

# | I 1 

### l

i i •I * lllll l 99 0 199 1 199 2 199 3 199 4 199 5 Yea r I

I
l 199 6 i

I 199 7 I

i 1998

Figur e 5.2.4-5
. Annua

l mea n densit y +/

- 2 standar

derror s (vertica

l lines ) an dgrandmea

n densit y fo r al l year s combine d(horizonta l line ) fo r th e Intak e Cove surfac e plankto n tows . Th e annua l mea n densitie s ar

e base do n seve n consecutiv e month s o f

data(Decembe

r throug h June ) excep t fo r 1990 , whic h ha

donl y five month s (Februar y throug h June)
.

TENER A E9-055. 0 5-18 0 Fina l 316(b ) Demonstratio n Marc h 1,200 05.2. 4 Rockfishe s
KG B rockfis h complex (Sebastes spp . V_DeA/_D J - mea n duratio n Analysi s Perio

d 3 : Ju l 1997-Ju n 1998 P s alongaher B Estimat e 90 % C.l .

Siz e o f Populatio n Relativ e t o Stud y Gri d Equivalen t Distanc e Alongshor e KG B rockfis h complex (Sebastes spp . V_De/V_D_ ) - mea n duratio n Analysi s Perio

d 4 : Ju l 1998-Ju n 199 9

Estimat e 90 % C.l .

Siz e o f Populatio n Relativ e t o Stud y Gri d Equivalen t Distanc e Alongshor e Figur e 5.2.4-6a . Tota

l annua l entrainmen

tmortalit y ( P M ) an

d 90 % confidenc e interva l (CI. ) a s a functio n o f

di e reciprocal ofth e fractio n ofth e populatio n a trisk an d containe d i n th e study gri d (j?) use d t o approximat e th e alongshor e exten to f di e study gri d populatio n expande d o n th e basi s o f alongshor e curren

tmovements an

d th e offshore extrapolatio n o f study gri d abundance extende d alongshor e usin g bot h onshor e an

d alongshor e curren

tmovements wid i 90 % C.I.' s indicated . TENERA E9-055. 0 5-18 1 Fina l 316(b) Demonstratio n Marc h 1.200 0P.10 0
5.2. 4 Rockfishe s
KG B rockfis h comple x (Sebastes spp . V_DeA/_D J - maximu m duratio n Analysi s Perio d 3 : Ju l 1997-Ju n 199 8 P s alongshor e Estimat e 90 % C.l
. Densit y Extrapolate d Pu - 0.0096 2 ±0.057 7

O x C5 x 10 x 15 X 20 x 2S x SO x SS x 40 x O k m 8 7 k m 17 4 k m 28 1 k m 34 7 k m 43 4 k m B2 1 k m OO B k m SO B k m Siz e o f Populatio n Relativ e t o Stud y Gri d Equivalen t Distanc e Alongshor e KG B rockfis h comple x (Sebastes spp . V_De/V_D

_ ) - maximu m duratio n Analysi s Perio d 4 : Ju l 1998-Ju n 199 9 Densit y Extrapolate d Ps

of f scal e 1/Pi s = 53. 9 Pu = 0.0047 6 ±0.046 7

Estimat e 90 % C.l.

O x 8 7 k m l O x

1 7 4 k m 1 S x

2 0 1 k m 2 0 x

3 4 7 k m 2 B x SO x

4 3 4 k m 02 1 k m SS x 40 x 0 O S k m as e k m Siz e o f Populatio n Relativ e t o Stud y Gn d Equivalen t Distanc e Alongshor e Figur e 5.2.4-6b . Tota

l annua l entrainmentmortalit

y (f^ ) an

d 90 % confidenc e interval (CI. ) a s a functio n o f

di e reciprocal o f

di e fraction o f

di e populatio n a

trisk an d containe d i n di e stud y gri d (f?) use d t o approximat e di e alongshor e exten tofth e stud y gri d populatio n expande d o n th e basi s o f alongshor e curren

tmovement s and di e offshor e extrapolatio n o f stud y gri d abundance extende d alongshor e usin g bod i onshor e an d alongshor e curren

tmovement s wit h 90 % CI.' s indicated . TENER A E9-055. 0 5-18 2 Fina l 316(b ) Demonstratio n Marc h 1.200 0