• Legal issues, guidanc

• Species lists• Case studies• How to address Goal 

REVISITING AMP GOAL 

ISSUES AND A PRELIMINARY AN

EXTIRPATED OR AT-RISK S

IN THE COLORADO RIVER EC

DOWNSTREAM FROM GLEN CA

Larry Stevens

Grand Canyon Wildlands Counc
AMWG VISION AND MISSIO

Adopted by the Glen Canyon Dam 

Management Work Group 

July 21, 1999

The Grand Canyon is a homeland for some, sacred to many, and a 

all. In honor of past generations, and on behalf of those of the envision an ecosystem where the resources and natural prharmony under a stewardship worthy of the Grand Canyon. 

We advise the Secretary of the Interior on how best to protect

impacts to, and improve the integrity of the Colorado Riveby Glen Canyon Dam, including natural biological diversitbiodiversity), traditional cultural properties, spiritual values, an

and recreational resources through the operation of Glen Cany

means.

We do so in keeping with the federal trust responsibilities to I

compliance with applicable federal, state, and tribal laws, delivery obligations of the Law of the River, and with due consi

economic value of power resources.

This will be accomplished through our long-term partnership u

available scientific and other information through an adap

management process.
The only IN for Goal 3 is RIN 3.1.1

What information (including technical, legal, econoissues) should be considered in determining the feadvisability of restoring pikeminnow, bonytail, rounotter, or other extirpated species?

AMP GOAL 3

Restore populations of extirpated sp

as feasible and advisable.
Restoration Perspectiv

What can be restored in th

• “Past Nature” – stewardship of the pristin• “Present Nature” – management of a natu

ecosystem (sensu Schmidt et al. 1998)

• “Future Nature” – ecosystem develops in 

future human intervention

Management for “Future Nature” may yield 

Forest”– high quality habitat with low faun
BIODIVERSITY CONSERV

IN THE CRE

• ~ 800 plant species• ~ 10,000 invertebrate spec• ~ 350 vertebrate species

EXTIRPATED OR DECLINING SPECIES 

• Which species have been lost in post-dam ti

• Which are declining and why ?• Is there potential for restoring missing popu
Grand Canyon MIA or Declining P

NPS Rare or 

Extirpated 

Species List

FWS Endangered Species 

List GC

7 plant species of special 

concern (formerly category 2 species) 26 vascular plants are of management concern due to their limited distribution

7 plant 

con2 splacondis

Bear Valley sandwort Bear V

MacDougall’s 

Flaveria MacDo

25 other rare or endemic vascular plants

Numer

pla

Salix g

Sentry Milkvetch Sentry 

Yerba-

(Text in bold are extirpated or declining spec

other species are species of concern elsewh
McDougall’s Flaveria: a rare sp
Goodding’s Willow (Salix good

Once relatively common along wide reaches of the Grand Canyon; now gone from 7 of 18 post-dam splants in dire health and no recruitment; losses due beaver attack and possibly flow alteration. 
Coming Soon to Gr

Tamarisk Lea

Tamarisk defoliation in the CRE will b

may increase fire frequency and e

and warrant management plan

emphasizing revegetation with Goodd
Invertebrates

NPS Extirpated 

Species List

FWS Endangered Species 

List GC

Kanab ambersnail E Kanab 

Arizona Beetle Grand CKaibab Masked (endemViceroy Vulcan(endemMany ra

(Text in bold are extirpated or declining specie

other species are species of concern elsewhe
New h

non-nativ

Endangered

Kanab Ambersnail

Vaseys Paradise,

Mile 32R

A SPRING, A SNAIL, A COMPL

Native Monk
Agathy

Cyllopsis pertepida

dorothea

Papilio indra kaibabensis

RARE OR ENDEMIC CRE BUTT

Extirpat

Limeniti
Wetsal

(CIC

Cicindela hae

Stone Creek 

ENDEMIC, SMALL POPULATIONS, NO M

STATUS UNCERTAIN

Vulcans Well Giant Wa

(BELOSTOMATID

Belostoma flumineum 

One spring along rive

“Masked Clubskimmer

(LIBELLULIDAE:Brechmorhoga pertinax)”

Stone Creek to Nankoweap Creek.
FISH

NPS Extirpated 

Species List

FWS Endangered 

Species List GCW

Bonytail chub E BonytaColorado 

pikeminnow E Colorad

Humpback Chub HumpbLittle Colorado River 

Spinedace

Little Co

Spin

Razorback sucker E Razorback sucker E Razorb

Roundtail chub Roundt

(Text in bold are extirpated or declining spe

other species are species of concern elsewher
NATIVE FISH OF THE COLORADO 

IN GRAND CANYON

Extirpated 
Endangered Humpback C

(Cyprinidae: Gila cypha
50K

100K

150K

200K

Old Paria 

New Paria R. Gauge

Lonely Dell Ranch

LF Grave

Paria River

Ponding of the Paria Rivesecond largest pre-dam HGlen Canyon Dam. GCWC to restore suitable HBC ain the old gravel mines juSuch a project will restore 
Razorback Sucker Colora

Bonytail Chub

OTHER FISH SPECIES MISSING FROM GRAN

Bonytail Chub
Other Species 

of Management Con
NPS Extirpated 

Species List

FWS Endangered 

Species List GCW

Northern Leopard Frog Nort

LowFrog

Desert Tortoise Dese

HERPETOFAUNA

(Text in bold are extirpated or declining spe

other species are species of concern elsew

Wes

Zebr
Grand Canyon Pink Rattlesnake Northe

-9 Mile Spring 

Lowland Le
BIRDS

NPS Extirpated 

Species List

FWS Endangered 

Species List GCW

Yuma Clapper RailBald Eagle Bald Ea

Brown Burrowi

California condor E* CaliforMexican Spotted Owl Mexica

PeregriPileated Sage g

Southwestern willow 

flycatcher E

Southw

flyc

Yellow-

(Text in bold are extirpated or declining specie

other species are species of concern elsewhe
Sout

W

Fly

•One of ~ 30 n

migrant bi

•Extirpated fro•BH Cowbird •Commonly ne

tamarisk
CALIFORNIA CONDOR

Reintroduced into the Grand Canyon regio

now common along the Colorado River
Bald Eagle

• Winter along CR in GC upstream 

from LCR and at several tribsdownstream

• Feed on trout• Feeding aided by fluctuating flows• Easily disturbed by passing boats• Present status in GC?

Peregrine Falcon

•Largest breeding population on any 

land management unit in the 48states

• 90 % of prey biomass is waterbirds,

mostly related to post-damclearwater flow
MAMMALS

NPS Extirpated 

Species List

FWS Endangered 

Species List GCW

Black B

Black-footed Ferret Black-footed Ferret Black-fo

Grizzly Bear Grizzly Bear Grizzly 

Jaguar Jaguar Jaguar

Miriam Muskra

Gray Wolf Gray Wolf Plains G

Prairie River o

(Text in bold are extirpated or declining speci

other species are species of concern elsewh

Badger
MISSING M

Colorado River Otter

Extinct? Role as mammalian 

fish predator

Muskrat: status in CR

Bad
A PROPOSED PLAN TO ADDRESS 

Employing an ecosystem approac

understanding the changing dist

and status of ecologically importa

• Evaluate extent of knowledge (overview) – add task 

5-yr MRP, with work to be conducted in 201

• TWG review report; assess potential for reintroduct

species--TWG Ad Hoc and AMWG-GCMRC-SA 

• Address information gaps, reintroduction strategies

TWG Ad Hoc and AMWG-GCMRC-SA discussi

• Acquire funding and implement restoration activities

-- From AMP if relevant and advisable-- And/or from other agencies and other sources