Benthic Response to Water Quality and Biotic Pressures 

in Lower South San Francisco Bay, Alviso Slough, and 

Coyote Creek

By Francis Parchaso, Janet K. Thompson, Jeff S. Crauder, Rosa I. Anduaga, and Sarah A. Pearson

Open-File Report 2015–1234

U.S. Department of the Interior

U.S. Geological Survey
U.S. Department of the Interior

SALLY JEWELL, Secretary

U.S. Geological Survey

Suzette M. Kimball, Acting Director

U.S. Geological Survey, Reston, Virginia: 2015

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Suggested citation:

Parchaso, F., Thompson, J.K., Crauder, J.S., Anduaga, R.I., and Pearson, S.A., 2015, Benthic response to water 

quality and biotic pressures in lower south San Francisco Bay, Alviso Slough, and Coyote Creek: U.S. Geological 

Survey Open-File Report 2015–1234, 44 p., http://dx.doi.org/10.3133/ofr20151234. 

ISSN 2331-1258 (online)
iii

Contents

Executive Summary.................................................................................................................................................... 1

Introduction................................................................................................................................................................. 2

Objectives ............................................................................................................................................................... 3

Methods...................................................................................................................................................................... 4

Measuring Bivalves................................................................................................................................................. 4

Biomass Calculations.............................................................................................................................................. 4

Results and Observations........................................................................................................................................... 4

Diversity .................................................................................................................................................................. 5

Community Composition......................................................................................................................................... 5

Chronology of Communities.................................................................................................................................... 5

Transitions in Benthic Community Function—As Consumers, As Prey, As Geochemical Enhancers..................... 6

5-Year Time Series Gives Us Context .................................................................................................................... 6

Biomass .................................................................................................................................................................. 7

Conclusions ................................................................................................................................................................ 7

References Cited........................................................................................................................................................ 8

Appendixes............................................................................................................................................................... 20

Appendix 1. AVS1 Species List and Abundance................................................................................................... 21

Appendix 2. AVS2 Species List and Abundance................................................................................................... 22

Appendix 3. AVS3 Species List and Abundance................................................................................................... 23

Appendix 4. GPE1 Species List and Abundance .................................................................................................. 24

Appendix 5. GPE2 Species List And Abundance.................................................................................................. 25

Appendix 6. GPE3 Species List And Abundance.................................................................................................. 26

Appendix 7. GPE4 Species List and Abundance .................................................................................................. 27

Appendix 8. SB13 Species List and Abundance ................................................................................................... 28

Appendix 9. SB14 Species List and Abundance ................................................................................................... 29

Appendix 10. SB15 Species List and Abundance ................................................................................................. 30

Appendix 11. CC1 Species List and Abundance................................................................................................... 31

Appendix 12. D3 Species List and Abundance ..................................................................................................... 34

Appendix 13. SDBGC2 Species List and Abundance ........................................................................................... 37

Appendix 14. AVS Bivalve Biomass...................................................................................................................... 40

Appendix 15. GPE Bivalve Biomass ..................................................................................................................... 41

Appendix 16. SB Bivalve Biomass ........................................................................................................................ 42

Appendix 17. CC1 Bivalve Biomass...................................................................................................................... 43

Appendix 18. D3 Bivalve Biomass ........................................................................................................................ 44

Figures

1. Map showing benthic sampling station locations in south San Francisco Bay and sampling area in relaton 

to San Francisco Bay proper. ...................................................................................................................... 10

2. Maps showing the number of species at each station in south San Francisco Bay and its adjacent sloughs 

for March, June, and September 2014. ....................................................................................................... 11

3. Map showing abundance of all species at all stations in March 2014 (for species where the abundance is 

greater than 2 per 0.05 square meter)......................................................................................................... 12
iv

4. Map showing abundance of all species at all stations in June 2014 for species where the abundance is 

greater than 2 per 0.05 square meter)......................................................................................................... 12

5. Map showing abundance of all species at all stations in September 2014 (for species where the abundance 

is greater than 2 per 0.05 square meter). .................................................................................................... 13

6. Time series graph showing abundance of class Bivalvia at station D3 in Coyote Creek, 2009–2014. ........ 14

7. Time series graph showing abundance of Order Amphipoda at station D3 in Coyote Creek, 2009–2014... 14

8. Time series graph showing abundance of class Bivalvia at station CC1 in Coyote Creek, 2009–2014....... 15

9. Time series graph showing abundance of Order Amphipoda at station CC1 in Coyote Creek, 2009–2014 15

10. Map showing bivalve biomass at sampling stations in Guadalupe Slough, Alviso Slough, Artisean Slough, 

and Coyote Creek in March 2014. ............................................................................................................... 16

11. Map showing bivalve biomass at sampling stations in Guadalupe Slough, Alviso Slough, Artisean Slough, 

and Coyote Creek in June 2014. ................................................................................................................. 17

12. Map showing bivalve biomass at sampling stations in Guadalupe Slough, Alviso Slough, Artisean Slough, 

and Coyote Creek in September 2014......................................................................................................... 17

13. Time series graph showing bivalve biomass at station D3 in Coyote Creek, 2009–2014. ........................... 18

14. Time series graph showing bivalve biomass at station CC1 in Coyote Creek, 2009–2014.......................... 18

Tables

1. Benthic sampling station coordinates (latitude-longitude)............................................................................ 19
Benthic Response to Water Quality and Biotic Pressures 

in Lower South San Francisco Bay, Alviso Slough, and 

Coyote Creek

By Francis Parchaso, Janet K. Thompson, Jeff S. Crauder, Rosa I. Anduaga, and Sarah A. Pearson

Executive Summary

Benthic invertebrate communities are monitored because the composition of those communities 

can effect and be affected by the water quality of an aquatic system. Benthic communities use and 

sometimes regulate the cycling of essential elements (for example, carbon). Benthic invertebrate taxa

may also indicate acutely and chronically stressful environments because they are mostly sessile,

accumulate contaminants, and sometimes respond dramatically to oligotrophic as well as eutrophic 

conditions. Benthic communities can in turn affect water quality by grazing pelagic food resources and 

increasing the rate of nutrient regeneration through feeding and bioturbating the sediment.

South San Francisco Bay is a system dependent on phytoplankton as the base to the food web.

Despite abundant nutrients, south San Francisco Bay has had limited phytoplankton production in the 

last several decades owning to poor light conditions and high grazing losses from the water column by

benthic invertebrates. The south San Francisco Bay achieves a balance of biogeochemical conditions in 

most springs to accommodate a short phytoplankton bloom. This balance has maintained the 

phytoplankton in south San Francisco Bay at low biomass levels relative to other high-nutrient urban 

estuaries. The role that benthic invertebrates play in this balance, in these episodic spring events, and in 

other seasons within the estuary remains of great interest to water-quality and biological resource 

managers.

Our primary objective in this study is to quantify current (2014) benthic-community structure 

and function in the south San Francisco Bay sloughs and to compare those communities temporally over 

decadal time scales with a unique long-term dataset. The study area (fig. 1) is inclusive of the area south 

of the Dumbarton Bridge (DB) including Alviso and Guadalupe Sloughs and Coyote Creek.

The following are results highlighted in this report:

• The benthic communities of Coyote Creek and Alviso, Guadalupe, and Artesian Sloughs were

dominated by different organisms but similar functional groups in March, June, and September 

2014.

• Coyote Creek stations (D3 and CC1) had a similar increase in Potamocorbula amurensis

biomass followed by a decline in 2014, as was observed annually in the south San Francisco Bay

since 1999. The lack of grazing pressure owing to the observed declines in these taxa in 2014

may allow the sloughs to become sources of phytoplankton in spring.

• Bivalve biomass is elevated in summer and fall relative to the spring and winter except in 

Artesian Slough, where bivalves did not establish a signifcant presence. Presence of certain 

species contributes to the prey value of the community to predators. Potamocorbula amurensis
2

is a shallow-burrowing bivalve and hence is easy prey for bottom-feeding predators. In contrast, 

Macoma petalum is a deposit feeder and can burrow deeper into the substrate than

Potamocorbula amurensis, making it harder to be preyed upon. The quantitative importance of 

such predator-prey relationships on phytoplankton dynamics requires further investigation.

There were also more amphipods in the sloughs in March 2014; this group is another potential 

contributor to the benthic-pelagic biomass balance. There is no observed reason for Artesian 

Slough to have low bivalve biomass values and high amphipod abundances.

Introduction

Benthic communities are monitored because the individuals reflect the water quality of a system 

and because they use and sometimes control available carbon resources. They are also a good monitor 

of acutely and chronically stressful environments because they are stationary, accumulate contaminants, 

and respond, sometimes dramatically, to low and high phytoplankton biomass as well as low oxygen 

conditions.

Benthic communities can affect water quality by grazing pelagic food resources and increasing 

the rate of nutrient regeneration through feeding and bioturbating the sediment. South San Francisco 

Bay is a system dependent on phytoplankton as the base to the food web (Jassby and others, 1993).

Despite abundant nutrients, south San Francisco Bay has had limited phytoplankton production in the 

last several decades owing to poor light conditions and high grazing losses. Thus, the system has rarely 

experienced anoxia that is usually associated with high nutrient systems (Cloern, 2001). Our conceptual 

model for phytoplankton growth in south San Francisco Bay includes a delicate balance between light 

availability, grazing losses (primarily in the shallow water), and physical mixing of the water column 

(Lucas and others, 2009). The south San Francisco Bay achieves the right balance in most springs to 

accommodate a short phytoplankton bloom. This balance has maintained the phytoplankton in south 

San Francisco Bay at low biomass levels relative to other high-nutrient urban estuaries (Cloern, 2001).

We have found that a fall/winter reduction in filter-feeding bivalves in the shallow water each 

year is one of the primary triggers that allow a spring phytoplankton bloom to develop in the south San 

Francisco Bay. Each fall, predation by migratory and resident birds (Thompson and others, 2008), fish,

and invertebrates (Cloern and others, 2007) decimates the shallow water bivalve communities in both 

south San Francisco and San Pablo Bays (Poulton and others, 2002, 2004; Richman and Lovvorn,

2004). This elimination of bivalve grazing in the shallow water allows the phytoplankton to grow if 

light and mixing are not limiting (Thompson and others, 2008). Bivalves in the shallow water are thus 

essentially an annual species with larvae settling each spring followed by rapid growth, which allows 

them to become a controlling factor on the phytoplankton by late spring and summer.

Changes in the benthic community structure occur normally. Benthic species distributions are 

dependent on the physical habitat (substrate and depth), physiological limits (such as salinity in this 

system; Lee and others, 2003), and predators (Cloern and others, 2007). Therefore, seasonal and 

interannual differences in freshwater flow result in both seasonal and episodic changes in species 

abundance and community composition (Nichols and Thompson, 1985a, 1985b). Episodic events such 

as the introduction of introduced species can have lasting effects on the benthic community, whereas 

other events such as wastewater treatment plant malfunctions are likely to have short-term effects.

Contaminants can also restrict the success of some species (Hornberger and others, 2000). Therefore,

when the benthic community that was dominated by filter feeders changes to one dominated by surface 

deposit feeders, many possible factors could be responsible for such a change.

Our current hypothesis is that a change in predator abundance associated with upwelling off 

shore has reduced all bivalves in south San Francisco Bay. The result of the reduced grazing pressure on 
3

the phytoplankton in conjunction with decreased turbidity lead an increasing trend in phytoplankton 

biomass and the development of fall increases in phytoplankton biomass (Cloern and others, 2007). As 

shown by this example, understanding the ecological dynamics of the south San Francisco Bay is not 

always straightforward. This is a cautionary story, as it is important that we not misinterpret changes in 

phytoplankton standing stock to be due to the changing water-quality conditions when they are really 

due to biotic changes.

We know how important predation on the benthic bivalves can be, but the benthic invertebrates 

are also important as prey. Benthic invertebrates—a significant prey resource for many fish species—

are considered a component of essential fish habitat (Fisheries Management Plans under the Magnuson 

Stevens Fishery Conservation and Management Act). Our conceptual model for maintaining appropriate 

benthic prey for fish and bird species is based on understanding what prey characteristics and habitat of 

the prey are important for the predator. The effect of species swaps within benthic communities such as 

we have seen in the last 15 years may be very significant to predators. For example, a surface-dwelling 

bivalve like Potamocorbula amurensis has a soft shell, is highly caloric, is easy to capture, and has been 

shown to be valuable prey in San Francisco Bay (Richman and Lovvorn, 2004). A deep-burrowing,

tube-dwelling worm such as Sabaco elongates, which is common in south San Francisco Bay (Lee and 

others, 2003), is unlikely to be fed upon by either fish or birds. For this reason, analysis of the benthic

community needs to include abundance, grazing rate where appropriate, and functional ecology (feeding 

mode, habitat, motility, and structures such as tubes and shells, which may impede predation) of each 

species.

Objectives

Our primary objective is to investigate the current community structure and function in the 

benthic community in the sloughs connected to south San Francisco Bay and to compare those 

communities as well as the benthic community in the south San Francisco Bay. The study (fig. 1) is 

inclusive of the area south of the Dumbarton Bridge (DB), including Alviso and Guadalupe Sloughs and 

Coyote Creek. If possible, stations upstream of the railroad bridge on Coyote Creek will be included. A 

number of channel stations are included because the bivalves in the channel are the source of recruits 

following the fall predation on the bivalves. Thus, to fully understand the benthic community changes 

through the seasons, we need benthic community data from all depths.

The abundance of filter-feeding benthic organisms in south San Francisco Bay has declined in 

the past decade (Cloern and others, 2007). We ask if the benthic communities are similar in the lower 

south San Francisco Bay sloughs and south San Francisco Bay and if the sloughs could serve as a

source of filter feeders to south San Francisco Bay?

The hypotheses tested by this study include the following:

• H0: There is a difference in the structure of benthic communities in south San Francisco Bay and 

in the adjacent sloughs.

• H0: The differences in the benthic community structure between south San Franisco Bay and the 

adjacent sloughs and among sloughs cannot be associated with known stressors (predators, 

hydrologic events, invasive species, and water quality).

• H0: Grazing pressure in the sloughs shows that functional differences in the benthic community 

in the sloughs relative to south San Francisco Bay have little influence on south San Francisco 

Bay phytoplankton biomass.

• H0: Differences in the benthic community structure of the south San Francisco Bay sloughs and 

the south San Francisco Bay result in an increase in the food available to predators in the sloughs 

either through changes in biomass and availability or palatability of benthic organisms.
4

Methods

Analysis of the species composition and functional composition of the benthic community 

incorporates previously collected samples and samples collected in 2014. Samples that were previously 

collected are from 2009 to 2013 as part of a field and modeling study that examined the mechanisms of 

phytoplankton bloom development in south San Francisco Bay (Thompson and others, 2008; Lucas and 

others, 2009). These samples are archived at the U.S. Geological Survey (USGS).

Samples collected in 2014 from Alviso, Artesian, and Guadalupe Sloughs were collected during 

the months of March, June, and September to coincide with our spatially intensive sampling of south 

San Francisco Bay below the San Mateo Bridge (table 1). The remaining stations in south San Francisco 

Bay (D3, SDBGC2, and CC1) were collected monthly (fig. 1).

Samples were collected with a 0.05-m

2 (square meters) weighted Van Veen grab that was hand 

deployed in all but the deep water stations. Samples were sieved through a 0.5-mm (millimeter) screen, 

preserved in 10-percent buffered formalin, and transferred to 70-percent ethyl alcohol with rose bengal 

dye. Samples were sorted and well-known species enumerated at the USGS Benthic Lab in Menlo Park.

A quality assurance procedure was used whereby, depending on the difficulty and the number of 

organisms in the sample, samples were double sorted/identified. More difficult taxonomic groups were 

contracted out to a taxonomic consultant (Susan McCormick) with a request that all but the rare species 

be identified and enumerated to the lowest taxon possible. The contractor was asked to supply a

taxonomic voucher collection. 

Measuring Bivalves

U.S. Geological Survey personnel measured the bivalves to the nearest mm using a video image 

analyzer with HL++ image software (Western Vision, 2005) and handheld calipers (for the larger 

animals). Data were saved in size frequency spreadsheets. The USGS has used this technique for over 

20 years. Large bivalves were measured for conversion to biomass in the recent samples (2004–08) to 

allow for comparison with previous data (1993–2009).

Biomass Calculations

All filter-feeding bivalve individuals (Potamocorbula amurensis, Venerupis japonica,

Musculista senhousia, Mytilus c.f. edulis, Mya arenaria, and Macoma petalum) were removed from 

each sample and counted, and the longest length of each individual was measured. A size range (length 

of 1.5 mm and greater) of live animals was collected at each site during each month to calculate dry 

tissue weight for each size of animal. Animals were measured, dried at 60 °C (dry weight), weighed, 

ashed at 500 °C in a muffle furnace, and reweighed (ash weight). A relationship between animal length 

and ash-free dry weight (AFDW = dry wt. − ash wt.) was then used to convert the measured animals 

from each benthic sample into biomass estimates for each species.

Results and Observations

We look at several components of the benthic community to help us interpret its response to 

water-quality conditions and to characterize its function within the ecosytem. We first look at the 

relative diversity of the communities, which reflects the degree and frequency of disturbance, both 

natural and human caused. Our second task is to examine the composition of the communities, which 

when combined with assignment of functional traits of the species (feeding mode, reproductive mode,

and life history), tells us how the species in the community function as prey, predator, and facilitator of 
5

geochemical processes. It is the combination of these factors at several locations, ideally oriented along 

a gradient, that tell us the most.

Diversity

We show here the simplest index of diversity—the number of species found at each station for 

each month sampled in 2014. The general pattern was consistent among the seasons (fig. 2). The highest 

diversity was seen in the south San Francisco Bay transect (stations SBDCG2, CC1, and D3), where 

species number ranges from 6 to 12. Guadalupe Slough and Alviso Slough had similar diversities (4–10 

species), and Artesian Slough consistently had the lowest diversity with a range of 1 to 6 species. It was 

also the only slough where the down-bay (closest to the bay) station did not have the most species on 

the transect. With a few exceptions, the diversity was highest in June and lowest in September 2014.

Community Composition

Bivalves and amphipods were the dominant taxonomic groups in Alviso Slough, Guadalupe 

Slough, Artesian Slough, Coyote Creek, and south San Francisco Bay stations during our 2014 sampling 

(figs. 3–5). The most common amphipods are tube-dwelling filter feeders. They are 

oviparous/viviparous (brood their young) and release their young as juveniles. Because most amphipods 

with these traits can swim, rapidly leave an area when challenged, and rapidly invade an area to 

reestablish their tubes and burrows, they are considered to be opportunistic species in spite of producing

a relatively low number of juveniles. They feed on pelagic food sources (phytoplankton is common), 

surface detritus, and bacteria. The high number of individuals at some locations result in the amphipods 

consuming a noticeable amount of the pelagic food, but in most cases, they still have an order of 

magnitude or less affect on the phytoplankton biomass relative to the bivalves. Amphipods are common 

prey items for fish and birds (shore birds and ducks). Both pelagic and demersal fish feed on amphipods 

as some species vacate their tubes at night and actively swim, making them available to pelagic feeders.

Bivalves in the south San Francisco Bay and adjacent sloughs are filter feeders or deposit 

feeders with one species being capable of feeding both ways. They are broadcast spawners with external 

fertilization except for Gemma gemma, which broods its young. Except for small surface-dwelling 

species (Gemma gemma and juvenile Potamocorbula amurensis), bivalves are usually stationary once 

they settle. The large size of bivalves relative to the rest of the benthic community means they consume 

a significant amount of the available carbon in the water column and in the sediment surface. Their large 

size also allows them to “wait out” periods of unfavorable water quality and low food availability and 

respond very quickly once conditions change. Therefore, they are formidable competitors with pelagic 

filter feeders such as zooplankton, which must reproduce and grow populations in response to increased 

food. Bivalves are important prey for demersal fish and birds.

The annelids were remarkably absent in our sampling. Of the annelid species that did commonly 

occur, most were subsurface-deposit feeders (Neanthes succinea, Heteromastus filliformis, and 

members of the tubificidae family), eating through the sediment in much the same way that earthworms 

feed.

Chronology of Communities

The March 2014 sampling was dominated by amphipods except at AVS1 and D3. Species 

diversity was highest in March and similar at Alviso and Guadalupe Sloughs, although the abundances 

were considerably higher in Alviso Slough than in Guadalupe Slough. Bivalve abundance was higher at 

stations where amphipod abundance was low; both of these sloughs had a combination of Macoma 
6

petalum, a filter-feeding/deposit-feeding bivalve, and Corophidae amphipods. Artesian Slough had the 

lowest diversity and the greatest number of individuals, which were mostly the amphipod 

Monocorophium. Corophium, a member of the same amphipod family as Monocorophium, was the 

dominant amphipod in the more estuarine south San Francisco Bay station SDBGC2. Gemma gemma, a 

tiny (maximum 5-mm) bivalve, was the dominant species at D3 and AVS1, the stations near the 

convergence of Coyote Creek and south San Francisco Bay.

The stations with the greatest number of indiviuals shifted from Artesian Slough to the upper 

Guadalupe Slough (GPE3) and south San Francisco Bay (SDBGC2 and D3) stations in June. Along 

with the spatial shift in dominant stations, there was a change in the dominant species. All three south 

San Francisco Bay stations were dominated by Gemma gemma. Monocorophium continued to be the 

dominant species in the upper slough stations, where it was joined by Macoma petalum and 

Potamocorbula amurensis. Species diversity continued to be greatest in the lower Guadalupe and 

Alviso Sloughs in addition to the south San Francisco Bay stations.

More transitions in the benthic community were observed in the September sampling. There was 

an increase in the number of invidiuals at the most upstream locations in Alviso and Guadalupe 

Sloughs. The total number of individuals in south San Francisco Bay stations declined from the June to 

September sampling with Gemma gemma being replaced as the dominant species by Ampelisca abdita, 

a tube-dwelling, filter-feeding amphipod. The increase in abundance of animals from June to September 

in the upper sloughs was due to increases in the abundance of Monocorophium.

Transitions in Benthic Community Function—As Consumers, As Prey, As Geochemical Enhancers

Filter feeders are effective at moving carbon from the water column to the benthos both as food 

and as feces, so their presence can speed up the geochemical processing of organic matter. For the entire 

sampling period, filter feeders were the dominant feeding type present at our sites. Filter feeders are also 

capable of grazing down phytoplankton biomass, and the grazing pattern that we observed with the 

bivalves in 2014 is similar to the pattern that we have observed with bivalves in south San Francisco

over the last 30 years. The bivalves were absent in March, increased in June, were an integral part of the 

phytoplankton growth dynamics in summer, and then disappeared in fall. We assume that the same 

predators that consume San Francisco Bay bivalves were at least partially responsible for the decline in

bivalve abundance in all the south San Francisco Bay sloughs in fall. This pattern of decreased numbers 

of bivalves in the spring followed with increasing numbers by summer is a pattern that is observed in 

the greater south San Francisco Bay.

The amphipods were present all year but responded to the changes in bivalve presence quickly,

as seen by the shifting relative dominance of amphipods from Artesian Slough in March to upper 

Guadalupe Slough in June and then to the upper reaches of Guadalupe and Alviso Sloughs in 

September. The change in amphipod abundance may have been due to them relocating or being preyed 

upon, but they were still the most abundant group at all stations in September.

5-Year Time Series Gives Us Context

Time series data from stations D3 and CC1 show the temporal transition in dominant filter 

feeder type from bivalves to amphipods in more detail (figs. 6–9). Bivalve abundance from 2009 to 

2014 at D3 and CC1 show bivalves being the dominant taxa until late 2013. In fall 2013, the amphipod 

abundance increased during the period when the bivalve abundance was low. We have seen this 

transition in abundance occur in the bay before, and it is never clear if the amphipods were successful 

only because the bivalves were gone or if something made it appealing to the amphipods and 

coincidently unappealing to the bivalves. Macoma petalum has been reported to have an opposing cycle 
7

to the amphipod Ampelisca abdita in this system as well as others (Nichols and Thompson, 1985a, 

1985b), so it is not an unknown dynamic.

Biomass

Biomass is the common currency between trophic levels in the food web, so an estimation of 

bivalve biomass can tell us not only how much they must consume to maintain their biomass but also 

the mass of the food available to the predators on the bivalves. We estimated biomass for Macoma 

petalum, a deep-living deposit/filter feeder, and for the two filter feeders, Mya arenaria and 

Potamocorbula amurensis. By showing the data spatially (figs. 10, 11, and 12), we can see the relative 

importance of the spatial changes. Bivalve biomass is generally greater in Alviso Slough and Guadalupe 

Slough than at the Coyote Creek and Artesian Slough stations. Biomass in Artesian Slough is 

consistently lower than in the other locations for each month of sampling. Macoma is the 

overwhemingly dominant bivalve in the March sampling. Potamocorbula has more of a presence in the 

June and September sampling. Mya, while not numerically dominant, was represented in the biomass 

data.

Bivalve biomass (shown in figs. 10, 11, and 12) is a good proxy for benthic grazing rates. The 

biomass distribution patterns in the study area do not differ from the observed patterns in the greater 

south San Francisco Bay, where we see low biomass values in March and increasing biomass values in 

June. The biomass values in September are generally equal to June. The largest contributor to the 

biomass values in March was Macoma, a deposit feeder. In June and September, Potamocorbula 

amurensis, a very efficient filter-feeding bivalve, contributed to a greater portion of the biomass values.

This change in the species contribution to the community suggests that there may be a greater grazing 

pressure on the phytoplankton community in the summer and fall than in the spring. This would allow 

all the sloughs connected to south San Francisco Bay to be a source of phytoplankton in the spring 

while potentially being a phytoplankton sink in the summer and fall.

In looking at the time series data in D3 and CC1 (figs. 13 and 14), we see that there has been a 

decline in bivalve biomass since its peak in 2012. Also notable is the increase in Macoma and Mya

biomass when Potamocorbula amurensis biomass decreases at station CC1.

Conclusions

The hypotheses tested by this study include the following:

• H0: There is a difference in the structure of benthic communities in south San Francisco Bay and 

in the adjacent sloughs.

True—the benthic communities are dominated by different organisms but similar functional 

groups.

• H0: The differences in the benthic community structure between south San Francisco Bay and 

the sloughs that connect to south San Francisco Bay and between the sloughs themselves cannot 

be associated with known stressors (predators, hydrologic events, invasive species, and water 

quality).

True—there is no observed reason for Artesian Slough to have low bivalve biomass values and 

high amphipod abundances. Lower salinities and predators may be limiting the presence or 

growth of bivalves in Artesian Slough.
8

• H0: Grazing pressure in the sloughs shows that functional differences in the benthic community 

in the sloughs relative to the bay have little influence on bay phytoplankton biomass.

True—stations D3 and CC1 had a similar increase in Potamocorbula amurensis biomass 

followed by a decline throughout 2014 sampling, as was also observed in south San Francisco 

Bay in 2009. The lack of grazing pressure may allow the sloughs to become sources of 

phytoplankton in spring.

• H0: Differences in the benthic community structure of the south San Francisco Bay sloughs and 

the south San Francisco Bay result in an increase in the food available in the sloughs to their 

predators either through changes in biomass, availability, or palatability of benthic organisms.

True—bivalve biomass is high in summer and fall except in Artesian Slough, where bivalves did 

not establish a signifcant presence. The species present also contribute to the prey value of the 

community to predators. Potamocorbula amurensis is a shallow-burrowing bivalve. Given its 

position in the substrate, it is easy prey for bottom-feeding predators. Macoma is a deposit feeder 

and can burrow deeper into the substrate than Potamocorbula amurensis, making it harder to be 

preyed upon. There were also more amphipods in the sloughs in March, and that might have 

been important for predators.

References Cited

Cloern, J.E., 2001, Our evolving conceptual model of the coastal eutrophication problem: Marine 

Ecology Progress Series, v. 210, p. 223–253. 

Cloern, J.E., Jassby, A.D., Thompson, J.K., Hieb, K., 2007, A cold phase of the east Pacific triggers 

new phytoplankton blooms in San Francisco Bay: Proceedings of the National Academy of Sciences,

v. 104, no. 47, p. 18561–18565. 

Hornberger, M., Luoma, S., Cain, D., Parchaso, F., Brown, C., Bouse, R., Wellise, C., and Thompson, 

J., 2000, Linkage of bioaccumulation and biological effects to changes in pollutant loads in South San 

Francisco Bay: Environmental Science and Technology, v. 34, p. 2401–2409.

Jassby, A.D., Cloern, J.E., Powell, T.M., 1993, Organic carbon sources and sinks in San Francisco Bay;

variability induced by river flow: Marine Ecology Progress Series, v. 95, p. 39–54.

Lee, H.L., III, Thompson, B., and Lowe, S., 2003, Estuarine and scalar patterns of invasion in the softbottom benthic communities of the San Francisco Estuary: Biological Invasions, v. 5, p. 85–102.

Lucas, L.V., Koseff, J.R., Monismith, S.G., Thompson, J.K., 2009, Shallow water processes govern 

system-wide bloom dynamics; A modeling study: Journal of Marine Systems, v. 75, nos. 1–2, p. 70–

86.

Nichols, F.H., and Thompson, J.K., 1985a, Persistence of an introduced mudflat community in South

San Francisco Bay, California: Marine Ecology Progress Series, v. 24, p. 83–97.

Nichols, F.H., and Thompson, J.K., 1985b, Time scales of change in the San Francisco Bay benthos: 

Hydrobiologia, v. 129, p. 121–138. 

Poulton, V.K., Lovvorn, J.R., Takekawa, J.Y., 2002, Clam density and scaup feeding behavior in San 

Pablo Bay, California: Condor, v. 104, p. 518–527.

Poulton, V.K., Lovvorn, J.R., Takekawa, J.Y., 2004, Spatial and overwinter changes in clam 

populations of San Pablo Bay, a semiarid estuary with highly variable freshwater inflow: Estuarine 

Coastal and Shelf Science, v. 59, no. 3, p. 459–473.
9

Richman, S.E., and Lovvorn, J.R., 2004, Relative foraging value to Lesser Scaup ducks of native and 

exotic clams from San Francisco Bay: Ecological Applications, v. 14, no. 4, p. 1217–1232.

Thompson, J.K., Koseff, J.R., Monismith, S.G., Lucas, L.V., 2008, Shallow water processes govern 

system-wide phytoplankton bloom dynamics; A field study: Journal of Marine Systems, v. 74, nos. 1–

2, p. 153–166.
10

Figure 1. Map showing benthic sampling station locations in south San Francisco Bay and sampling area in 

relaton to San Francisco Bay proper.

Coyote Creek

Guadalupe Slough

Alviso Slough Artesian Slough
11

Figure 2. Maps showing the number of species at each station in south San Francisco Bay and its adjacent 

sloughs for March, June, and September 2014.

5

5

5

9

8

8

7

3

3

6

6

6

4

March 2014

10

10

12

5

8

8

7

7

6

6

6

4

2

June 2014

# species

3

4

6

8

9

0.00 12.00

# species

2

5

8

9

6

6

6

6

4

4

4

4

1

1

September 2014 # species

1

2

4

6

8

9

0.00 12.00

# species
12

Figure 3. Map showing abundance of all species at all stations in March 2014 (for species where the abundance 

is greater than 2 per 0.05 square meter).

Figure 4. Map showing abundance of all species at all stations in June 2014 for species where the abundance is 

greater than 2 per 0.05 square meter).

SDBGC2

GPE3

GPE4

GPE2

AVS3

AVS2

GPE1

SB15

SB13

SB14

AVS1

CC1

D3

#/0.05M2

9

500

1,000

1,500

1,800

Species Actiniaria - attached

Ampelisca abdita

Corophium heteroceratum

Gemma gemma

Grandidierella japonica

Macoma petalum

Monocorophium unid. spp.

Neanthes succinea

Potamocorbula amurensis

SDBGC2

GPE3 GPE4

GPE2

AVS3

AVS2

GPE1

SB15

SB13

SB14

AVS1 CC1

D3

#/0.05M2

3

500

1,000

1,500

1,800

Species Actiniaria - attached

Actiniaria - burrowing

Ampelisca abdita

Bivalvia unid. spp.

Capitella capitata complex

Corophium heteroceratum

Gemma gemma

Glycinde picta

Glycinde unid. spp.

Grandidierella japonica

Heteromastus filiformis

Macoma petalum

Monocorophium unid. spp.

Mya arenaria

Neanthes succinea

Nippoleucon hinumensis

Potamocorbula amurensis

Sabellidae unid spp.

Synidotea laevidorsalis

Tubificidae unid. spp.
13

Figure 5. Map showing abundance of all species at all stations in September 2014 (for species where the 

abundance is greater than 2 per 0.05 square meter).

SDBGC2

GPE3

GPE4

GPE2

AVS3

AVS2

GPE1

SB15

SB13

SB14

AVS1

CC1

D3

Species Actiniaria - attached

Ampelisca abdita

Corophium heteroceratum

Gemma gemma

Grandidierella japonica

Heteromastus filiformis

Macoma petalum

Monocorophium unid. spp.

Musculista senhousia

Mya arenaria

Neanthes succinea

Paranthura japonica

Potamocorbula amurensis

Synidotea laevidorsalis

#/0.05M2

38

500

1,000

1,500

≥ 1,800
14

Figure 6. Time series graph showing abundance of class Bivalvia at station D3 in Coyote Creek, 2009–2014.

Figure 7. Time series graph showing abundance of Order Amphipoda at station D3 in Coyote Creek, 2009–

2014.

0

200

400

600

800

1,000

1,200

Mar-09

Jul-09

Nov-09

Mar-10

Jul-10

Nov-10

Mar-11

Jul-11

Nov-11

Mar-12

Jul-12

Nov-12

Mar-13

Jul-13

Nov-13

Mar-14

Jul-14

Nov-14

Abundance, in number per 0.05 square 

meter

Date

0

50

100

150

200

250

300

350

Mar-09

Jul-09

Nov-09

Mar-10

Jul-10

Nov-10

Mar-11

Jul-11

Nov-11

Mar-12

Jul-12

Nov-12

Mar-13

Jul-13

Nov-13

Mar-14

Jul-14

Nov-14

Abundance, in number per 0.05 square 

meter

Date
15

Figure 8. Time series graph showing abundance of class Bivalvia at station CC1 in Coyote Creek, 2009–2014.

Figure 9. Time series graph showing abundance of Order Amphipoda at station CC1 in Coyote Creek, 2009–

2014

0

50

100

150

200

250

300

350

400

450

500

Mar-09

Jul-09

Nov-09

Mar-10

Jul-10

Nov-10

Mar-11

Jul-11

Nov-11

Mar-12

Jul-12

Nov-12

Mar-13

Jul-13

Nov-13

Mar-14

Jul-14

Nov-14

Abundance, in number per 0.05 square 

meter

Date

0

500

1,000

1,500

2,000

2,500

3,000

3,500

4,000

4,500

5,000

Mar-09

Jul-09

Nov-09

Mar-10

Jul-10

Nov-10

Mar-11

Jul-11

Nov-11

Mar-12

Jul-12

Nov-12

Mar-13

Jul-13

Nov-13

Mar-14

Jul-14

Nov-14

Abundance, in number per 0.05 square 

meter

Date
16

Figure 10. Map showing bivalve biomass at sampling stations in Guadalupe Slough, Alviso Slough, Artisean 

Slough, and Coyote Creek in March 2014.

GPE3

GPE4

GPE2

AVS3

AVS2

GPE1

SB15

SB13

SB14

AVS1

CC1

D3

Avg. G/M2 0.1

50.0

100.0

174.7

Species Null

Macoma

Musculista

Mya

Potamocorbula

Theora

Venerupis
17

Figure 11. Map showing bivalve biomass at sampling stations in Guadalupe Slough, Alviso Slough, Artisean 

Slough, and Coyote Creek in June 2014.

Figure 12. Map showing bivalve biomass at sampling stations in Guadalupe Slough, Alviso Slough, Artisean 

Slough, and Coyote Creek in September 2014.

GPE3

GPE4

GPE2

AVS3

AVS2

GPE1

SB15

SB13

SB14

AVS1

CC1

D3

Avg. G/M2 1.91

50.00

100.00

150.00

175.00

Species Null

Macoma

Mya

Potamocorbula

Theora
18

Figure 13. Time series graph showing bivalve biomass at station D3 in Coyote Creek, 2009–2014.

Figure 14. Time series graph showing bivalve biomass at station CC1 in Coyote Creek, 2009–2014.

0

50

100

150

200

250

300

Mar-09

Jul-09

Nov-09

Mar-10

Jul-10

Nov-10

Mar-11

Jul-11

Nov-11

Mar-12

Jul-12

Nov-12

Mar-13

Jul-13

Nov-13

Mar-14

Jul-14

Nov-14

Biomass, in grams per square meter

Date

Macoma petalum

Mya arenaria

Potamocorbula amurensis

0

20

40

60

80

100

120

140

160

180

Oct-09

Feb-10

Jun-10

Oct-10

Feb-11

Jun-11

Oct-11

Feb-12

Jun-12

Oct-12

Feb-13

Jun-13

Oct-13

Feb-14

Jun-14

Oct-14

Biomass, in grams per square meter

Date

Macoma petalum

Mya arenaria

Potamocorbula amurensis
19

Table 1. Benthic sampling station coordinates (latitude-longitude).

Station Coordinates

AVS 1 N37.4591 W122.0209

AVS 2 N37.4399 W121.9984

AVS 3 N37.4193 W121.9821

GPE 1 N37.4526 W122.0334

GPE 2 N37.4405 W122.0371

GPE 3 N37.4323 W122.0192

GPE 4 N37.4269 W122.0031

SB13 N37.4609 W121.9637

SB14 N37.4505 W121.9679

SB15 N37.4405 W121.9586

D3 N37.4630 W122.0258

CC1 N37.4600 W121.9778

SDBGC2 N37.4607 W122.0549
20

Appendixes

Data are shown in the following units:

Biomas—grams ash-free-dry-mass/square meters (g/m2)

Species and abundance—(number/0.05/m2

)

Abbreviations:

sp.—Denotes a single species identified to the genus level

spp.—Denotes many species of the same genera

(1), (2), SF1—Denotes separate species of the same genera
21

Appendix 1. AVS1 Species List and Abundance

TAXON 27-Mar-14 24-Jun-14 24-Sep-14

PHYLUM ANNELIDA

Class Oligochaeta

Naididae unid. spp. 0.0 0.0 0.0

Oligochaeta unid. spp. 0.0 0.0 0.0

Tubificidae unid. spp. 0.0 0.0 0.0

Class Polychaeta

Capitella capitata complex 0.0 0.0 0.0

Cirratulidae unid. spp. 0.0 0.0 0.0

Eteone fauchaldi 0.0 0.0 0.0

Eteone lighti 0.0 0.0 0.0

Eteone unid. spp. 0.0 0.0 0.0

Euchone limnicola 0.0 0.0 0.0

Euchone unid. spp. 0.0 0.0 0.0

Exogone lourei 0.0 0.0 0.0

Glycera unid. spp. 0.0 0.0 0.0

Glycinde armigera 0.0 0.0 0.0

Glycinde picta 0.0 0.0 0.0

Glycinde unid. sp. SF1 0.0 0.0 0.0

Glycinde unid. spp. 0.0 0.0 0.0

Harmothoe imbricata 0.0 0.0 0.0

Heteromastus filiformis 2.0 1.0 0.0

Leitoscoloplos pugettensis 0.0 0.0 0.0

Maldanidae unid. spp. 0.0 0.0 0.0

Marphysa sanguinea 0.0 0.0 0.0

Neanthes succinea 7.0 5.0 8.0

Polychaeta unid. spp. (1) 0.0 0.0 0.0

Polychaeta unid. spp. (2) 1 vial 0.0 0.0

Polycirrus spp. 0.0 0.0 0.0

Polydora cornuta 0.0 0.0 0.0

Polydora unid. spp. 0.0 0.0 0.0

Pseudopolydora kempi 0.0 0.0 0.0

Pseudopolydora paucibranchiata 0.0 0.0 0.0

Sabaco elongatus 0.0 0.0 0.0

Sabellidae unid. spp. 0.0 0.0 0.0

Sphaerosyllis californiensis 0.0 0.0 0.0

Sphaerosyllis erinaceus 0.0 0.0 0.0

Sphaerosyllis unid. sp. A 0.0 0.0 0.0

Streblospio benedicti 0.0 0.0 0.0

Spionidae unid. spp. 0.0 0.0 0.0

PHYLUM ARTHROPODA

Class Copepoda

Calanoida unid. spp. 0.0 0.0 0.0

Harpacticoida unid. spp. 0.0 0.0 0.0

Class Malacostraca

Order Amphipoda

Ampelisca abdita 5.0 4.0 507.0

Ampithoe unid. spp. 0.0 0.0 0.0

Caprella californica 0.0 0.0 0.0

Corophium heteroceratum 0.0 0.0 26.0

Corophiidae unid. spp. 0.0 0.0 0.0

Grandidierella japonica 0.0 0.0 0.0

Monocorophium acherusicum 0.0 0.0 0.0

Monocorophium insidiosum 0.0 0.0 0.0

Monocorophium unid. spp. 0.0 0.0 0.0

Oedicerotidae unid spp. 0.0 0.0 0.0

Order Cumacea

Nippoleucon hinumensis 11.0 0.0 0.0

Order Decapoda

Crangon franciscorum 0.0 0.0 0.0

Hemigrapsus oregonensis 0.0 0.0 0.0

Crab unid spp. 0.0 0.0 0.0

Order Isopoda

Gnorisphaeroma oregonensis 0.0 0.0 0.0

Paranthura japonica 0.0 0.0 0.0

Synidotea laevidorsalis 0.0 0.0 0.0

Synidotea unid. spp. 0.0 0.0 0.0

Class Ostracoda

Eusarsiella zostericola 0.0 0.0 0.0

Cyprideis unid. spp. 0.0 0.0 0.0

Class Thecostraca

Balanomorpha unid. spp. 0.0 0.0 0.0

Cirripedia unid. spp. 0.0 0.0 0.0

TAXON 27-Mar-14 24-Jun-14 24-Sep-14

PHYLUM BRYOZOA

Class Gymnolaemata

Cheilostomatida unid. Spp. 0.0 0.0 0.0

PHYLUM CHORDATA

Class Ascidiacea

Molgula mahattensis 0.0 0.0 0.0

PHYLUM CNIDARIA

Class Anthozoa

Actiniaria - attached 0.0 2.0 6.0

Actiniaria - burrowing 0.0 0.0 0.0

Actiniaria unid. spp. 0.0 0.0 0.0

Class Hydrozoa

Hydrozoa unid spp. 0.0 0.0 0.0

PHYLUM MOLLUSCA

Class Bivalvia

Bivalvia unid. spp. 0.0 0.0 0.0

Gemma gemma 118.0 27.0 0.0

Macoma petalum 33.0 35.0 9.0

Musculista senhousia 0.0 0.0 0.0

Mya arenaria 16.0 1.0 0.0

Potamocorbula amurensis 0.0 22.0 16.0

Theora lubrica 0.0 0.0 0.0

Venerupis philippinarum 0.0 0.0 0.0

Class Gastropoda

Crepidula unid. Spp. 0.0 0.0 0.0

Gastropoda unid. sp. B 0.0 0.0 0.0

Ilyanassa obsoleta 0.0 0.0 0.0

Philine unid. spp. 0.0 0.0 0.0

Urosalpinx cinerea 0.0 0.0 0.0

PHYLUM NEMATODA

Nematoda unid. spp. 0.0 0.0 0.0

PHYLUM PLATYHELMINTHES

Class Turbellaria

Turbellaria unid. sp. A 0.0 0.0 0.0

Turbellaria unid. spp. 0.0 0.0 0.0
22

Appendix 2. AVS2 Species List and Abundance

TAXON 27-Mar-14 24-Jun-14 24-Sep-14

PHYLUM ANNELIDA

Class Oligochaeta

Naididae unid. spp. 0.0 0.0 0.0

Oligochaeta unid. spp. 0.0 0.0 0.0

Tubificidae unid. spp. 5.0 0.0 0.0

Class Polychaeta

Capitella capitata complex 0.0 0.0 0.0

Cirratulidae unid. spp. 0.0 0.0 0.0

Eteone fauchaldi 0.0 0.0 0.0

Eteone lighti 1.0 1.0 0.0

Eteone unid. spp. 0.0 0.0 0.0

Euchone limnicola 0.0 0.0 0.0

Euchone unid. spp. 0.0 0.0 0.0

Exogone lourei 0.0 0.0 0.0

Glycera unid. spp. 0.0 0.0 0.0

Glycinde armigera 0.0 0.0 0.0

Glycinde picta 0.0 0.0 0.0

Glycinde unid. sp. SF1 0.0 0.0 0.0

Glycinde unid. spp. 0.0 0.0 0.0

Harmothoe imbricata 0.0 0.0 0.0

Heteromastus filiformis 0.0 0.0 0.0

Leitoscoloplos pugettensis 0.0 0.0 0.0

Maldanidae unid. spp. 0.0 0.0 0.0

Marphysa sanguinea 0.0 0.0 0.0

Neanthes succinea 0.0 0.0 0.0

Polychaeta unid. spp. (1) 0.0 0.0 0.0

Polychaeta unid. spp. (2) 0.0 0.0 0.0

Polycirrus spp. 0.0 0.0 0.0

Polydora cornuta 0.0 0.0 0.0

Polydora unid. spp. 0.0 0.0 0.0

Pseudopolydora kempi 0.0 0.0 0.0

Pseudopolydora paucibranchiata 0.0 0.0 0.0

Sabaco elongatus 0.0 0.0 0.0

Sabellidae unid. spp. 0.0 0.0 0.0

Sphaerosyllis californiensis 0.0 0.0 0.0

Sphaerosyllis erinaceus 0.0 0.0 0.0

Sphaerosyllis unid. sp. A 0.0 0.0 0.0

Streblospio benedicti 0.0 0.0 0.0

Spionidae unid. spp. 0.0 0.0 0.0

PHYLUM ARTHROPODA

Class Copepoda

Calanoida unid. spp. 0.0 0.0 0.0

Harpacticoida unid. spp. 0.0 0.0 0.0

Class Malacostraca

Order Amphipoda

Ampelisca abdita 0.0 3.0 0.0

Ampithoe unid. spp. 0.0 0.0 0.0

Caprella californica 0.0 0.0 0.0

Corophium heteroceratum 289.0 3.0 0.0

Corophiidae unid. spp. 0.0 0.0 0.0

Grandidierella japonica 0.0 0.0 6.0

Monocorophium acherusicum 0.0 0.0 0.0

Monocorophium insidiosum 0.0 0.0 0.0

Monocorophium unid. spp. 0.0 0.0 146.0

Oedicerotidae unid spp. 0.0 0.0 0.0

Order Cumacea

Nippoleucon hinumensis 0.0 2.0 0.0

Order Decapoda

Crangon franciscorum 0.0 0.0 0.0

Hemigrapsus oregonensis 0.0 0.0 0.0

Crab unid spp. 0.0 0.0 0.0

Order Isopoda

Gnorisphaeroma oregonensis 0.0 0.0 0.0

Paranthura japonica 0.0 0.0 0.0

Synidotea laevidorsalis 0.0 0.0 0.0

Synidotea unid. spp. 0.0 0.0 0.0

Class Ostracoda

Eusarsiella zostericola 0.0 0.0 0.0

Cyprideis unid. spp. 0.0 0.0 0.0

Class Thecostraca

Balanomorpha unid. spp. 0.0 0.0 0.0

Cirripedia unid. spp. 0.0 0.0 0.0

TAXON 27-Mar-14 24-Jun-14 24-Sep-14

PHYLUM BRYOZOA

Class Gymnolaemata

Cheilostomatida unid. Spp. 0.0 0.0 0.0

PHYLUM CHORDATA

Class Ascidiacea

Molgula mahattensis 0.0 0.0 0.0

PHYLUM CNIDARIA

Class Anthozoa

Actiniaria - attached 0.0 0.0 0.0

Actiniaria - burrowing 0.0 0.0 0.0

Actiniaria unid. spp. 0.0 0.0 0.0

Class Hydrozoa

Hydrozoa unid spp. 0.0 0.0 0.0

PHYLUM MOLLUSCA

Class Bivalvia

Bivalvia unid. spp. 0.0 0.0 0.0

Gemma gemma 0.0 0.0 0.0

Macoma petalum 40.0 35.0 24.0

Musculista senhousia 0.0 0.0 0.0

Mya arenaria 2.0 0.0 0.0

Potamocorbula amurensis 9.0 27.0 32.0

Theora lubrica 0.0 0.0 0.0

Venerupis philippinarum 0.0 0.0 0.0

Class Gastropoda

Crepidula unid. Spp. 0.0 0.0 0.0

Gastropoda unid. sp. B 0.0 0.0 0.0

Ilyanassa obsoleta 0.0 0.0 0.0

Philine unid. spp. 0.0 0.0 0.0

Urosalpinx cinerea 0.0 0.0 0.0

PHYLUM NEMATODA

Nematoda unid. spp. 0.0 0.0 0.0

PHYLUM PLATYHELMINTHES

Class Turbellaria

Turbellaria unid. sp. A 0.0 0.0 0.0

Turbellaria unid. spp. 0.0 0.0 0.0
23

Appendix 3. AVS3 Species List and Abundance

TAXON 27-Mar-14 24-Jun-14 24-Sep-14

PHYLUM ANNELIDA

Class Oligochaeta

Naididae unid. spp. 0.0 0.0 0.0

Oligochaeta unid. spp. 0.0 0.0 0.0

Tubificidae unid. spp. 0.0 0.0 0.0

Class Polychaeta

Capitella capitata complex 0.0 0.0 0.0

Cirratulidae unid. spp. 0.0 0.0 0.0

Eteone fauchaldi 0.0 0.0 0.0

Eteone lighti 0.0 0.0 0.0

Eteone unid. spp. 0.0 0.0 0.0

Euchone limnicola 0.0 0.0 0.0

Euchone unid. spp. 0.0 0.0 0.0

Exogone lourei 0.0 0.0 0.0

Glycera unid. spp. 0.0 0.0 0.0

Glycinde armigera 0.0 0.0 0.0

Glycinde picta 0.0 0.0 0.0

Glycinde unid. sp. SF1 0.0 0.0 0.0

Glycinde unid. spp. 0.0 0.0 0.0

Harmothoe imbricata 0.0 0.0 0.0

Heteromastus filiformis 0.0 1.0 0.0

Leitoscoloplos pugettensis 0.0 0.0 0.0

Maldanidae unid. spp. 0.0 0.0 0.0

Marphysa sanguinea 0.0 0.0 0.0

Neanthes succinea 3.0 4.0 0.0

Polychaeta unid. spp. (1) 0.0 0.0 0.0

Polychaeta unid. spp. (2) 0.0 0.0 0.0

Polycirrus spp. 0.0 1.0 0.0

Polydora cornuta 0.0 0.0 0.0

Polydora unid. spp. 0.0 0.0 0.0

Pseudopolydora kempi 0.0 0.0 0.0

Pseudopolydora paucibranchiata 0.0 0.0 0.0

Sabaco elongatus 0.0 0.0 0.0

Sabellidae unid. spp. 0.0 0.0 0.0

Sphaerosyllis californiensis 0.0 0.0 0.0

Sphaerosyllis erinaceus 0.0 0.0 0.0

Sphaerosyllis unid. sp. A 0.0 0.0 0.0

Streblospio benedicti 0.0 0.0 0.0

Spionidae unid. spp. 0.0 0.0 0.0

PHYLUM ARTHROPODA

Class Copepoda

Calanoida unid. spp. 0.0 0.0 0.0

Harpacticoida unid. spp. 0.0 0.0 0.0

Class Malacostraca

Order Amphipoda

Ampelisca abdita 0.0 0.0 57.0

Ampithoe unid. spp. 0.0 0.0 0.0

Caprella californica 0.0 0.0 0.0

Corophium heteroceratum 2.0 1.0 0.0

Corophiidae unid. spp. 0.0 0.0 0.0

Grandidierella japonica 2.0 0.0 0.0

Monocorophium acherusicum 0.0 0.0 0.0

Monocorophium insidiosum 0.0 0.0 0.0

Monocorophium unid. spp. 0.0 0.0 3573.0

Oedicerotidae unid spp. 0.0 0.0 0.0

Order Cumacea

Nippoleucon hinumensis 12.0 0.0 0.0

Order Decapoda

Crangon franciscorum 0.0 0.0 0.0

Hemigrapsus oregonensis 0.0 0.0 0.0

Crab unid spp. 0.0 0.0 0.0

Order Isopoda

Gnorisphaeroma oregonensis 0.0 0.0 0.0

Paranthura japonica 0.0 0.0 0.0

Synidotea laevidorsalis 0.0 0.0 0.0

Synidotea unid. spp. 0.0 0.0 0.0

Class Ostracoda

Eusarsiella zostericola 0.0 0.0 0.0

Cyprideis unid. spp. 0.0 0.0 0.0

Class Thecostraca

Balanomorpha unid. spp. 0.0 0.0 0.0

Cirripedia unid. spp. 0.0 0.0 0.0

TAXON 27-Mar-14 24-Jun-14 24-Sep-14

PHYLUM BRYOZOA

Class Gymnolaemata

Cheilostomatida unid. Spp. 0.0 0.0 0.0

PHYLUM CHORDATA

Class Ascidiacea

Molgula mahattensis 0.0 0.0 0.0

PHYLUM CNIDARIA

Class Anthozoa

Actiniaria - attached 0.0 0.0 0.0

Actiniaria - burrowing 0.0 0.0 0.0

Actiniaria unid. spp. 0.0 0.0 0.0

Class Hydrozoa

Hydrozoa unid spp. 0.0 0.0 0.0

PHYLUM MOLLUSCA

Class Bivalvia

Bivalvia unid. spp. 0.0 0.0 0.0

Gemma gemma 0.0 0.0 0.0

Macoma petalum 11.0 12.0 18.0

Musculista senhousia 0.0 0.0 0.0

Mya arenaria 0.0 2.0 1.0

Potamocorbula amurensis 0.0 2.0 10.0

Theora lubrica 0.0 0.0 0.0

Venerupis philippinarum 0.0 0.0 0.0

Class Gastropoda

Crepidula unid. Spp. 0.0 0.0 0.0

Gastropoda unid. sp. B 0.0 0.0 0.0

Ilyanassa obsoleta 0.0 0.0 0.0

Philine unid. spp. 0.0 0.0 0.0

Urosalpinx cinerea 0.0 0.0 0.0

PHYLUM NEMATODA

Nematoda unid. spp. 0.0 0.0 0.0

PHYLUM PLATYHELMINTHES

Class Turbellaria

Turbellaria unid. sp. A 0.0 0.0 0.0

Turbellaria unid. spp. 0.0 0.0 0.0
24

Appendix 4. GPE1 Species List and Abundance

TAXON 27-Mar-14 24-Jun-14 24-Sep-14

PHYLUM ANNELIDA

Class Oligochaeta

Naididae unid. spp. 0.0 0.0 0.0

Oligochaeta unid. spp. 0.0 0.0 0.0

Tubificidae unid. spp. 0.0 0.0 0.0

Class Polychaeta

Capitella capitata complex 0.0 0.0 0.0

Cirratulidae unid. spp. 0.0 0.0 0.0

Eteone fauchaldi 0.0 0.0 0.0

Eteone lighti 1.0 0.0 0.0

Eteone unid. spp. 0.0 0.0 0.0

Euchone limnicola 0.0 0.0 0.0

Euchone unid. spp. 0.0 0.0 0.0

Exogone lourei 0.0 0.0 0.0

Glycera unid. spp. 0.0 0.0 0.0

Glycinde armigera 0.0 0.0 0.0

Glycinde picta 0.0 0.0 0.0

Glycinde unid. sp. SF1 0.0 0.0 0.0

Glycinde unid. spp. 0.0 0.0 0.0

Harmothoe imbricata 0.0 0.0 0.0

Heteromastus filiformis 0.0 0.0 0.0

Maldanidae unid. spp. 0.0 0.0 0.0

Leitoscoloplos pugettensis 0.0 0.0 0.0

Marphysa sanguinea 0.0 0.0 0.0

Neanthes succinea 4.0 1.0 4.0

Polychaeta unid. spp. (1) 0.0 0.0 0.0

Polychaeta unid. spp. (2) 0.0 0.0 0.0

Polycirrus spp. 0.0 0.0 0.0

Polydora cornuta 0.0 0.0 0.0

Polydora unid. spp. 0.0 0.0 0.0

Pseudopolydora kempi 0.0 0.0 0.0

Pseudopolydora paucibranchiata 0.0 0.0 0.0

Sabaco elongatus 0.0 0.0 0.0

Sabellidae unid. spp. 0.0 0.0 0.0

Sphaerosyllis californiensis 0.0 0.0 0.0

Sphaerosyllis erinaceus 0.0 0.0 0.0

Sphaerosyllis unid. sp. A 0.0 0.0 0.0

Streblospio benedicti 0.0 0.0 0.0

Spionidae unid. spp. 0.0 0.0 0.0

PHYLUM ARTHROPODA

Class Copepoda

Calanoida unid. spp. 0.0 0.0 0.0

Harpacticoida unid. spp. 0.0 0.0 0.0

Class Malacostraca

Order Amphipoda

Ampelisca abdita 0.0 21.0 86.0

Ampithoe unid. spp. 0.0 0.0 0.0

Caprella californica 0.0 0.0 0.0

Corophium heteroceratum 0.0 17.0 0.0

Corophiidae unid. spp. 0.0 0.0 0.0

Grandidierella japonica 0.0 1.0 3.0

Monocorophium acherusicum 0.0 0.0 0.0

Monocorophium insidiosum 0.0 0.0 0.0

Monocorophium unid. spp. 2.0 36.0 35.0

Oedicerotidae unid spp. 0.0 0.0 0.0

Order Cumacea

Nippoleucon hinumensis 0.0 11.0 0.0

Order Decapoda

Crangon franciscorum 0.0 0.0 0.0

Hemigrapsus oregonensis 0.0 0.0 0.0

Crab unid spp. 0.0 0.0 0.0

Order Isopoda

Gnorisphaeroma oregonensis 0.0 0.0 0.0

Paranthura japonica 0.0 0.0 0.0

Synidotea laevidorsalis 0.0 1.0 0.0

Synidotea unid. spp. 0.0 0.0 0.0

Class Ostracoda

Eusarsiella zostericola 0.0 0.0 0.0

Cyprideis unid. spp. 0.0 0.0 0.0

Class Thecostraca

Balanomorpha unid. spp. 0.0 0.0 0.0

Cirripedia unid. spp. 0.0 0.0 0.0

TAXON 27-Mar-14 24-Jun-14 24-Sep-14

PHYLUM BRYOZOA

Class Gymnolaemata

Cheilostomatida unid. Spp. 0.0 0.0 0.0

PHYLUM CHORDATA

Class Ascidiacea

Molgula mahattensis 0.0 0.0 0.0

PHYLUM CNIDARIA

Class Anthozoa

Actiniaria - attached 2.0 0.0 0.0

Actiniaria - burrowing 0.0 0.0 0.0

Actiniaria unid. spp. 0.0 0.0 0.0

Class Hydrozoa

Hydrozoa unid spp. 0.0 0.0 0.0

PHYLUM MOLLUSCA

Class Bivalvia

Bivalvia unid. spp. 0.0 0.0 0.0

Gemma gemma 0.0 8.0 0.0

Macoma petalum 8.0 29.0 3.0

Musculista senhousia 1.0 0.0 0.0

Mya arenaria 0.0 0.0 0.0

Potamocorbula amurensis 8.0 25.0 16.0

Theora lubrica 0.0 0.0 0.0

Venerupis philippinarum 0.0 0.0 0.0

Class Gastropoda

Crepidula unid. Spp. 0.0 0.0 0.0

Gastropoda unid. sp. B 0.0 0.0 0.0

Ilyanassa obsoleta 1.0 0.0 0.0

Philine unid. spp. 0.0 0.0 0.0

Urosalpinx cinerea 0.0 0.0 0.0

PHYLUM NEMATODA

Nematoda unid. spp. 0.0 0.0 0.0

PHYLUM PLATYHELMINTHES

Class Turbellaria

Turbellaria unid. sp. A 0.0 0.0 0.0

Turbellaria unid. spp. 0.0 0.0 0.0
25

Appendix 5. GPE2 Species List And Abundance

TAXON 27-Mar-14 24-Jun-14 24-Sep-14

PHYLUM ANNELIDA

Class Oligochaeta

Naididae unid. spp. 0.0 0.0 0.0

Oligochaeta unid. spp. 0.0 0.0 0.0

Tubificidae unid. spp. 0.0 0.0 0.0

Class Polychaeta

Capitella capitata complex 0.0 0.0 0.0

Cirratulidae unid. spp. 0.0 0.0 0.0

Eteone fauchaldi 0.0 0.0 0.0

Eteone lighti 0.0 0.0 0.0

Eteone unid. spp. 0.0 0.0 0.0

Euchone limnicola 0.0 0.0 0.0

Euchone unid. spp. 0.0 0.0 0.0

Exogone lourei 0.0 0.0 0.0

Glycera unid. spp. 0.0 0.0 0.0

Glycinde armigera 0.0 0.0 0.0

Glycinde picta 0.0 0.0 0.0

Glycinde unid. sp. SF1 0.0 0.0 0.0

Glycinde unid. spp. 0.0 0.0 0.0

Harmothoe imbricata 0.0 0.0 0.0

Heteromastus filiformis 0.0 0.0 0.0

Leitoscoloplos pugettensis 0.0 0.0 0.0

Maldanidae unid. spp. 0.0 0.0 0.0

Marphysa sanguinea 0.0 0.0 0.0

Neanthes succinea 4.0 3.0 0.0

Polychaeta unid. spp. (1) 0.0 0.0 0.0

Polychaeta unid. spp. (2) 0.0 0.0 0.0

Polycirrus spp. 0.0 0.0 0.0

Polydora cornuta 0.0 0.0 0.0

Polydora unid. spp. 0.0 0.0 0.0

Pseudopolydora kempi 0.0 0.0 0.0

Pseudopolydora paucibranchiata 0.0 0.0 0.0

Sabaco elongatus 0.0 0.0 0.0

Sabellidae unid. spp. 0.0 0.0 0.0

Sphaerosyllis californiensis 0.0 0.0 0.0

Sphaerosyllis erinaceus 0.0 0.0 0.0

Sphaerosyllis unid. sp. A 0.0 0.0 0.0

Streblospio benedicti 0.0 0.0 0.0

Spionidae unid. spp. 0.0 0.0 0.0

PHYLUM ARTHROPODA

Class Copepoda

Calanoida unid. spp. 0.0 0.0 0.0

Harpacticoida unid. spp. 0.0 0.0 0.0

Class Malacostraca

Order Amphipoda

Ampelisca abdita 0.0 0.0 0.0

Ampithoe unid. spp. 0.0 0.0 0.0

Caprella californica 0.0 0.0 0.0

Corophium heteroceratum 2.0 30.0 0.0

Corophiidae unid. spp. 0.0 0.0 0.0

Grandidierella japonica 0.0 0.0 0.0

Monocorophium acherusicum 0.0 0.0 0.0

Monocorophium insidiosum 0.0 0.0 0.0

Monocorophium unid. spp. 0.0 0.0 0.0

Oedicerotidae unid spp. 0.0 0.0 0.0

Order Cumacea

Nippoleucon hinumensis 0.0 0.0 0.0

Order Decapoda

Crangon franciscorum 0.0 0.0 0.0

Hemigrapsus oregonensis 0.0 0.0 0.0

Crab unid spp. 0.0 0.0 0.0

Order Isopoda

Gnorisphaeroma oregonensis 0.0 0.0 0.0

Paranthura japonica 0.0 0.0 0.0

Synidotea laevidorsalis 0.0 0.0 0.0

Synidotea unid. spp. 0.0 0.0 0.0

Class Ostracoda

Eusarsiella zostericola 0.0 0.0 0.0

Cyprideis unid. spp. 0.0 0.0 0.0

Class Thecostraca

Balanomorpha unid. spp. 0.0 0.0 0.0

Cirripedia unid. spp. 0.0 0.0 0.0

TAXON 27-Mar-14 24-Jun-14 24-Sep-14

PHYLUM BRYOZOA

Class Gymnolaemata

Cheilostomatida unid. Spp. 0.0 0.0 0.0

PHYLUM CHORDATA

Class Ascidiacea

Molgula mahattensis 0.0 0.0 0.0

PHYLUM CNIDARIA

Class Anthozoa

Actiniaria - attached 1.0 1.0 0.0

Actiniaria - burrowing 0.0 1.0 0.0

Actiniaria unid. spp. 0.0 0.0 0.0

Class Hydrozoa

Hydrozoa unid spp. 0.0 0.0 0.0

PHYLUM MOLLUSCA

Class Bivalvia

Bivalvia unid. spp. 0.0 10.0 0.0

Gemma gemma 0.0 0.0 0.0

Macoma petalum 3.0 26.0 26.0

Musculista senhousia 0.0 0.0 2.0

Mya arenaria 0.0 3.0 2.0

Potamocorbula amurensis 3.0 17.0 8.0

Theora lubrica 0.0 0.0 0.0

Venerupis philippinarum 0.0 0.0 0.0

Class Gastropoda

Crepidula unid. Spp. 0.0 0.0 0.0

Gastropoda unid. sp. B 0.0 0.0 0.0

Ilyanassa obsoleta 0.0 0.0 0.0

Philine unid. spp. 0.0 0.0 0.0

Urosalpinx cinerea 0.0 0.0 0.0

PHYLUM NEMATODA

Nematoda unid. spp. 0.0 0.0 0.0

PHYLUM PLATYHELMINTHES

Class Turbellaria

Turbellaria unid. sp. A 0.0 0.0 0.0

Turbellaria unid. spp. 0.0 0.0 0.0
26

Appendix 6. GPE3 Species List And Abundance

TAXON 27-Mar-14 24-Jun-14 24-Sep-14

PHYLUM ANNELIDA

Class Oligochaeta

Naididae unid. spp. 0.0 0.0 0.0

Oligochaeta unid. spp. 0.0 0.0 0.0

Tubificidae unid. spp. 2.0 0.0 0.0

Class Polychaeta

Capitella capitata complex 0.0 0.0 0.0

Cirratulidae unid. spp. 0.0 0.0 0.0

Eteone fauchaldi 0.0 0.0 0.0

Eteone lighti 2.0 0.0 0.0

Eteone unid. spp. 0.0 0.0 0.0

Euchone limnicola 0.0 0.0 0.0

Euchone unid. spp. 0.0 0.0 0.0

Exogone lourei 0.0 0.0 0.0

Glycera unid. spp. 0.0 0.0 0.0

Glycinde armigera 0.0 0.0 0.0

Glycinde picta 0.0 0.0 0.0

Glycinde unid. sp. SF1 0.0 0.0 0.0

Glycinde unid. spp. 0.0 0.0 0.0

Harmothoe imbricata 0.0 0.0 0.0

Heteromastus filiformis 0.0 0.0 0.0

Leitoscoloplos pugettensis 0.0 0.0 0.0

Maldanidae unid. spp. 0.0 0.0 0.0

Marphysa sanguinea 0.0 0.0 0.0

Neanthes succinea 0.0 7.0 0.0

Polychaeta unid. spp. (1) 0.0 0.0 0.0

Polychaeta unid. spp. (2) 0.0 0.0 0.0

Polycirrus spp. 0.0 0.0 0.0

Polydora cornuta 0.0 0.0 0.0

Polydora unid. spp. 0.0 0.0 0.0

Pseudopolydora kempi 0.0 0.0 0.0

Pseudopolydora paucibranchiata 0.0 0.0 0.0

Sabaco elongatus 0.0 0.0 0.0

Sabellidae unid. spp. 0.0 0.0 0.0

Sphaerosyllis californiensis 0.0 0.0 0.0

Sphaerosyllis erinaceus 0.0 0.0 0.0

Sphaerosyllis unid. sp. A 0.0 0.0 0.0

Streblospio benedicti 0.0 0.0 0.0

Spionidae unid. spp. 0.0 0.0 0.0

PHYLUM ARTHROPODA

Class Copepoda

Calanoida unid. spp. 0.0 0.0 0.0

Harpacticoida unid. spp. 0.0 0.0 0.0

Class Malacostraca

Order Amphipoda

Ampelisca abdita 0.0 0.0 0.0

Ampithoe unid. spp. 0.0 0.0 0.0

Caprella californica 0.0 0.0 0.0

Corophium heteroceratum 0.0 0.0 0.0

Corophiidae unid. spp. 0.0 0.0 0.0

Grandidierella japonica 5.0 0.0 30.0

Monocorophium acherusicum 0.0 0.0 0.0

Monocorophium insidiosum 0.0 0.0 0.0

Monocorophium unid. spp. 0.0 1476.0 1872.0

Oedicerotidae unid spp. 0.0 0.0 0.0

Order Cumacea

Nippoleucon hinumensis 3.0 0.0 0.0

Order Decapoda

Crangon franciscorum 0.0 0.0 0.0

Hemigrapsus oregonensis 0.0 0.0 0.0

Crab unid spp. 0.0 0.0 0.0

Order Isopoda

Gnorisphaeroma oregonensis 0.0 0.0 0.0

Paranthura japonica 0.0 0.0 0.0

Synidotea laevidorsalis 0.0 3.0 1.0

Synidotea unid. spp. 0.0 0.0 0.0

Class Ostracoda

Eusarsiella zostericola 0.0 0.0 0.0

Cyprideis unid. spp. 0.0 0.0 0.0

Class Thecostraca

Balanomorpha unid. spp. 0.0 0.0 0.0

Cirripedia unid. spp. 0.0 0.0 0.0

TAXON 27-Mar-14 24-Jun-14 24-Sep-14

PHYLUM BRYOZOA

Class Gymnolaemata

Cheilostomatida unid. Spp. 0.0 0.0 0.0

PHYLUM CHORDATA

Class Ascidiacea

Molgula mahattensis 0.0 0.0 0.0

PHYLUM CNIDARIA

Class Anthozoa

Actiniaria - attached 0.0 0.0 0.0

Actiniaria - burrowing 0.0 0.0 0.0

Actiniaria unid. spp. 0.0 0.0 0.0

Class Hydrozoa

Hydrozoa unid spp. 0.0 0.0 0.0

PHYLUM MOLLUSCA

Class Bivalvia

Bivalvia unid. spp. 0.0 0.0 0.0

Gemma gemma 0.0 0.0 0.0

Macoma petalum 4.0 47.0 34.0

Musculista senhousia 0.0 0.0 0.0

Mya arenaria 0.0 0.0 1.0

Potamocorbula amurensis 1.0 29.0 30.0

Theora lubrica 0.0 0.0 0.0

Venerupis philippinarum 0.0 0.0 0.0

Class Gastropoda

Crepidula unid. Spp. 0.0 0.0 0.0

Gastropoda unid. sp. B 0.0 0.0 0.0

Ilyanassa obsoleta 0.0 0.0 0.0

Philine unid. spp. 0.0 0.0 0.0

Urosalpinx cinerea 0.0 0.0 0.0

PHYLUM NEMATODA

Nematoda unid. spp. 0.0 0.0 0.0

PHYLUM PLATYHELMINTHES

Class Turbellaria

Turbellaria unid. sp. A 0.0 0.0 0.0

Turbellaria unid. spp. 0.0 0.0 0.0
27

Appendix 7. GPE4 Species List and Abundance

TAXON 27-Mar-14 24-Jun-14 24-Sep-14

PHYLUM ANNELIDA

Class Oligochaeta

Naididae unid. spp. 0.0 0.0 0.0

Oligochaeta unid. spp. 0.0 0.0 0.0

Tubificidae unid. spp. 23.0 0.0 0.0

Class Polychaeta

Capitella capitata complex 0.0 0.0 0.0

Cirratulidae unid. spp. 0.0 0.0 0.0

Eteone fauchaldi 0.0 0.0 0.0

Eteone lighti 0.0 1.0 0.0

Eteone unid. spp. 0.0 0.0 0.0

Euchone limnicola 0.0 0.0 0.0

Euchone unid. spp. 0.0 0.0 0.0

Exogone lourei 0.0 0.0 0.0

Glycera unid. spp. 0.0 0.0 0.0

Glycinde armigera 0.0 0.0 0.0

Glycinde picta 0.0 0.0 0.0

Glycinde unid. sp. SF1 0.0 0.0 0.0

Glycinde unid. spp. 0.0 0.0 0.0

Harmothoe imbricata 0.0 0.0 0.0

Heteromastus filiformis 0.0 0.0 0.0

Leitoscoloplos pugettensis 0.0 0.0 0.0

Maldanidae unid. spp. 0.0 0.0 0.0

Marphysa sanguinea 0.0 0.0 0.0

Neanthes succinea 0.0 3.0 0.0

Polychaeta unid. spp. (1) 0.0 0.0 0.0

Polychaeta unid. spp. (2) 0.0 0.0 0.0

Polycirrus spp. 0.0 0.0 0.0

Polydora cornuta 0.0 0.0 0.0

Polydora unid. spp. 0.0 0.0 0.0

Pseudopolydora kempi 0.0 0.0 0.0

Pseudopolydora paucibranchiata 0.0 0.0 0.0

Sabaco elongatus 0.0 0.0 0.0

Sabellidae unid. spp. 0.0 0.0 0.0

Sphaerosyllis californiensis 0.0 0.0 0.0

Sphaerosyllis erinaceus 0.0 0.0 0.0

Sphaerosyllis unid. sp. A 0.0 0.0 0.0

Streblospio benedicti 0.0 0.0 0.0

Spionidae unid. spp. 0.0 0.0 0.0

PHYLUM ARTHROPODA

Class Copepoda

Calanoida unid. spp. 0.0 0.0 0.0

Harpacticoida unid. spp. 0.0 0.0 0.0

Class Malacostraca

Order Amphipoda

Ampelisca abdita 0.0 0.0 0.0

Ampithoe unid. spp. 0.0 0.0 0.0

Caprella californica 0.0 0.0 0.0

Corophium heteroceratum 7.0 0.0 0.0

Corophiidae unid. spp. 0.0 0.0 0.0

Grandidierella japonica 4.0 3.0 120.0

Monocorophium acherusicum 0.0 0.0 0.0

Monocorophium insidiosum 0.0 0.0 0.0

Monocorophium unid. spp. 0.0 28.0 521.0

Oedicerotidae unid spp. 0.0 0.0 0.0

Order Cumacea

Nippoleucon hinumensis 0.0 5.0 0.0

Order Decapoda

Crangon franciscorum 0.0 0.0 0.0

Hemigrapsus oregonensis 0.0 0.0 0.0

Crab unid spp. 0.0 0.0 0.0

Order Isopoda

Gnorisphaeroma oregonensis 0.0 0.0 0.0

Paranthura japonica 0.0 0.0 0.0

Synidotea laevidorsalis 0.0 0.0 0.0

Synidotea unid. spp. 0.0 0.0 0.0

Class Ostracoda

Eusarsiella zostericola 0.0 0.0 0.0

Cyprideis unid. spp. 0.0 0.0 0.0

Class Thecostraca

Balanomorpha unid. spp. 0.0 0.0 0.0

Cirripedia unid. spp. 0.0 0.0 0.0

TAXON 27-Mar-14 24-Jun-14 24-Sep-14

PHYLUM BRYOZOA

Class Gymnolaemata

Cheilostomatida unid. Spp. 0.0 0.0 0.0

PHYLUM CHORDATA

Class Ascidiacea

Molgula mahattensis 0.0 0.0 0.0

PHYLUM CNIDARIA

Class Anthozoa

Actiniaria - attached 0.0 0.0 0.0

Actiniaria - burrowing 0.0 0.0 0.0

Actiniaria unid. spp. 0.0 0.0 0.0

Class Hydrozoa

Hydrozoa unid spp. 0.0 0.0 0.0

PHYLUM MOLLUSCA

Class Bivalvia

Bivalvia unid. spp. 0.0 0.0 0.0

Gemma gemma 0.0 0.0 0.0

Macoma petalum 2.0 78.0 29.0

Musculista senhousia 0.0 0.0 0.0

Mya arenaria 0.0 0.0 0.0

Potamocorbula amurensis 1.0 2.0 8.0

Theora lubrica 0.0 0.0 0.0

Venerupis philippinarum 0.0 0.0 0.0

Class Gastropoda

Crepidula unid. Spp. 0.0 0.0 0.0

Gastropoda unid. sp. B 0.0 0.0 0.0

Ilyanassa obsoleta 0.0 0.0 0.0

Philine unid. spp. 0.0 0.0 0.0

Urosalpinx cinerea 0.0 0.0 0.0

PHYLUM NEMATODA

Nematoda unid. spp. 0.0 0.0 0.0

PHYLUM PLATYHELMINTHES

Class Turbellaria

Turbellaria unid. sp. A 0.0 0.0 0.0

Turbellaria unid. spp. 0.0 0.0 0.0
28

Appendix 8. SB13 Species List and Abundance

TAXON 27-Mar-14 24-Jun-14 24-Sep-14

PHYLUM ANNELIDA

Class Oligochaeta

Naididae unid. spp. 0.0 0.0 0.0

Oligochaeta unid. spp. 0.0 0.0 0.0

Tubificidae unid. spp. 0.0 0.0 0.0

Class Polychaeta

Capitella capitata complex 0.0 0.0 0.0

Cirratulidae unid. spp. 0.0 0.0 0.0

Eteone fauchaldi 0.0 0.0 0.0

Eteone lighti 0.0 0.0 0.0

Eteone unid. spp. 0.0 0.0 0.0

Euchone limnicola 0.0 0.0 0.0

Euchone unid. spp. 0.0 0.0 0.0

Exogone lourei 0.0 0.0 0.0

Glycera unid. spp. 0.0 0.0 0.0

Glycinde armigera 0.0 0.0 0.0

Glycinde picta 0.0 0.0 0.0

Glycinde unid. sp. SF1 0.0 0.0 0.0

Glycinde unid. spp. 0.0 0.0 0.0

Harmothoe imbricata 0.0 0.0 0.0

Heteromastus filiformis 0.0 0.0 0.0

Leitoscoloplos pugettensis 0.0 0.0 0.0

Maldanidae unid. spp. 0.0 0.0 0.0

Marphysa sanguinea 0.0 0.0 0.0

Neanthes succinea 4.0 0.0 0.0

Polychaeta unid. spp. (1) 0.0 0.0 0.0

Polychaeta unid. spp. (2) 0.0 0.0 0.0

Polycirrus spp. 0.0 0.0 0.0

Polydora cornuta 0.0 0.0 0.0

Polydora unid. spp. 0.0 0.0 0.0

Pseudopolydora kempi 0.0 0.0 0.0

Pseudopolydora paucibranchiata 0.0 0.0 0.0

Sabaco elongatus 0.0 0.0 0.0

Sabellidae unid. spp. 0.0 0.0 0.0

Sphaerosyllis californiensis 0.0 0.0 0.0

Sphaerosyllis erinaceus 0.0 0.0 0.0

Sphaerosyllis unid. sp. A 0.0 0.0 0.0

Streblospio benedicti 0.0 0.0 0.0

Spionidae unid. spp. 0.0 0.0 0.0

PHYLUM ARTHROPODA

Class Copepoda

Calanoida unid. spp. 0.0 0.0 0.0

Harpacticoida unid. spp. 0.0 0.0 0.0

Class Malacostraca

Order Amphipoda

Ampelisca abdita 0.0 0.0 0.0

Ampithoe unid. spp. 0.0 0.0 0.0

Caprella californica 0.0 0.0 0.0

Corophium heteroceratum 0.0 0.0 0.0

Corophiidae unid. spp. 0.0 0.0 0.0

Grandidierella japonica 0.0 0.0 0.0

Monocorophium acherusicum 0.0 0.0 0.0

Monocorophium insidiosum 0.0 0.0 0.0

Monocorophium unid. spp. 18.0 0.0 45.0

Oedicerotidae unid spp. 0.0 0.0 0.0

Order Cumacea

Nippoleucon hinumensis 0.0 0.0 0.0

Order Decapoda

Crangon franciscorum 0.0 0.0 0.0

Hemigrapsus oregonensis 0.0 0.0 0.0

Crab unid spp. 0.0 0.0 0.0

Order Isopoda

Gnorisphaeroma oregonensis 0.0 0.0 0.0

Paranthura japonica 0.0 0.0 0.0

Synidotea laevidorsalis 0.0 3.0 0.0

Synidotea unid. spp. 0.0 0.0 0.0

Class Ostracoda

Eusarsiella zostericola 0.0 0.0 0.0

Cyprideis unid. spp. 0.0 0.0 0.0

Class Thecostraca

Balanomorpha unid. spp. 0.0 0.0 0.0

Cirripedia unid. spp. 0.0 0.0 0.0

TAXON 27-Mar-14 24-Jun-14 24-Sep-14

PHYLUM BRYOZOA

Class Gymnolaemata

Cheilostomatida unid. Spp. 0.0 0.0 0.0

PHYLUM CHORDATA

Class Ascidiacea

Molgula mahattensis 0.0 0.0 0.0

PHYLUM CNIDARIA

Class Anthozoa

Actiniaria - attached 0.0 0.0 0.0

Actiniaria - burrowing 0.0 0.0 0.0

Actiniaria unid. spp. 0.0 0.0 0.0

Class Hydrozoa

Hydrozoa unid spp. 0.0 0.0 0.0

PHYLUM MOLLUSCA

Class Bivalvia

Bivalvia unid. spp. 0.0 0.0 0.0

Gemma gemma 0.0 0.0 0.0

Macoma petalum 0.0 0.0 0.0

Musculista senhousia 0.0 0.0 0.0

Mya arenaria 0.0 0.0 0.0

Potamocorbula amurensis 6.0 1.0 0.0

Theora lubrica 0.0 0.0 0.0

Venerupis philippinarum 0.0 0.0 0.0

Class Gastropoda

Crepidula unid. Spp. 0.0 0.0 0.0

Gastropoda unid. sp. B 0.0 0.0 0.0

Ilyanassa obsoleta 0.0 0.0 0.0

Philine unid. spp. 0.0 0.0 0.0

Urosalpinx cinerea 0.0 0.0 0.0

PHYLUM NEMATODA

Nematoda unid. spp. 0.0 0.0 0.0

PHYLUM PLATYHELMINTHES

Class Turbellaria

Turbellaria unid. sp. A 0.0 0.0 0.0

Turbellaria unid. spp. 0.0 0.0 0.0
29

Appendix 9. SB14 Species List and Abundance

TAXON 27-Mar-14 24-Jun-14 24-Sep-14

PHYLUM ANNELIDA

Class Oligochaeta

Naididae unid. spp. 0.0 0.0 0.0

Oligochaeta unid. spp. 0.0 0.0 0.0

Tubificidae unid. spp. 0.0 0.0 0.0

Class Polychaeta

Capitella capitata complex 0.0 0.0 0.0

Cirratulidae unid. spp. 0.0 0.0 0.0

Eteone fauchaldi 0.0 0.0 0.0

Eteone lighti 0.0 0.0 0.0

Eteone unid. spp. 0.0 0.0 0.0

Euchone limnicola 0.0 0.0 0.0

Exogone lourei 0.0 0.0 0.0

Euchone unid. spp. 0.0 0.0 0.0

Glycera unid. spp. 0.0 0.0 0.0

Glycinde armigera 0.0 0.0 0.0

Glycinde picta 0.0 0.0 0.0

Glycinde unid. sp. SF1 0.0 0.0 0.0

Glycinde unid. spp. 0.0 0.0 0.0

Harmothoe imbricata 0.0 0.0 0.0

Heteromastus filiformis 0.0 0.0 0.0

Leitoscoloplos pugettensis 0.0 0.0 0.0

Maldanidae unid. spp. 0.0 0.0 0.0

Marphysa sanguinea 0.0 0.0 0.0

Neanthes succinea 0.0 1.0 4.0

Polychaeta unid. spp. (1) 0.0 0.0 0.0

Polychaeta unid. spp. (2) 0.0 0.0 0.0

Polycirrus spp. 0.0 0.0 0.0

Polydora cornuta 0.0 0.0 0.0

Polydora unid. spp. 0.0 0.0 0.0

Pseudopolydora kempi 0.0 0.0 0.0

Pseudopolydora paucibranchiata 0.0 0.0 0.0

Sabaco elongatus 0.0 0.0 0.0

Sabellidae unid. spp. 0.0 4.0 0.0

Sphaerosyllis californiensis 0.0 0.0 0.0

Sphaerosyllis erinaceus 0.0 0.0 0.0

Sphaerosyllis unid. sp. A 0.0 0.0 0.0

Streblospio benedicti 0.0 0.0 0.0

Spionidae unid. spp. 0.0 0.0 0.0

PHYLUM ARTHROPODA

Class Copepoda

Calanoida unid. spp. 0.0 0.0 0.0

Harpacticoida unid. spp. 0.0 0.0 0.0

Class Malacostraca

Order Amphipoda

Ampelisca abdita 0.0 0.0 0.0

Ampithoe unid. spp. 0.0 0.0 0.0

Caprella californica 0.0 0.0 0.0

Corophium heteroceratum 0.0 0.0 0.0

Corophiidae unid. spp. 0.0 0.0 0.0

Grandidierella japonica 20.0 2.0 25.0

Monocorophium acherusicum 0.0 0.0 0.0

Monocorophium insidiosum 0.0 0.0 0.0

Monocorophium unid. spp. 872.0 2.0 461.0

Oedicerotidae unid spp. 0.0 0.0 0.0

Order Cumacea

Nippoleucon hinumensis 0.0 0.0 0.0

Order Decapoda

Crangon franciscorum 0.0 0.0 0.0

Hemigrapsus oregonensis 0.0 0.0 0.0

Crab unid spp. 0.0 0.0 0.0

Order Isopoda

Gnorisphaeroma oregonensis 0.0 0.0 0.0

Paranthura japonica 0.0 0.0 0.0

Synidotea laevidorsalis 0.0 0.0 0.0

Synidotea unid. spp. 0.0 0.0 0.0

Class Ostracoda

Eusarsiella zostericola 0.0 0.0 0.0

Cyprideis unid. spp. 0.0 0.0 0.0

Class Thecostraca

Balanomorpha unid. spp. 0.0 0.0 0.0

Cirripedia unid. spp. 0.0 0.0 0.0

TAXON 27-Mar-14 24-Jun-14 24-Sep-14

PHYLUM BRYOZOA

Class Gymnolaemata

Cheilostomatida unid. Spp. 0.0 0.0 0.0

PHYLUM CHORDATA

Class Ascidiacea

Molgula mahattensis 0.0 0.0 0.0

PHYLUM CNIDARIA

Class Anthozoa

Actiniaria - attached 0.0 0.0 0.0

Actiniaria - burrowing 0.0 5.0 0.0

Actiniaria unid. spp. 0.0 0.0 0.0

Class Hydrozoa

Hydrozoa unid spp. 0.0 0.0 0.0

PHYLUM MOLLUSCA

Class Bivalvia

Bivalvia unid. spp. 0.0 0.0 0.0

Gemma gemma 0.0 0.0 0.0

Macoma petalum 3.0 1.0 3.0

Musculista senhousia 0.0 0.0 0.0

Mya arenaria 0.0 0.0 0.0

Potamocorbula amurensis 0.0 0.0 0.0

Theora lubrica 0.0 0.0 0.0

Venerupis philippinarum 0.0 0.0 0.0

Class Gastropoda

Crepidula unid. Spp. 0.0 0.0 0.0

Gastropoda unid. sp. B 0.0 0.0 0.0

Ilyanassa obsoleta 0.0 0.0 0.0

Philine unid. spp. 0.0 0.0 0.0

Urosalpinx cinerea 0.0 0.0 0.0

PHYLUM NEMATODA

Nematoda unid. spp. 0.0 0.0 0.0

PHYLUM PLATYHELMINTHES

Class Turbellaria

Turbellaria unid. sp. A 0.0 0.0 0.0

Turbellaria unid. spp. 0.0 0.0 0.0
30

Appendix 10. SB15 Species List and Abundance

TAXON 27-Mar-14 24-Jun-14 24-Sep-14

PHYLUM ANNELIDA

Class Oligochaeta

Naididae unid. spp. 0.0 0.0 0.0

Oligochaeta unid. spp. 0.0 0.0 0.0

Tubificidae unid. spp. 0.0 3.0 0.0

Class Polychaeta

Capitella capitata complex 0.0 6.0 0.0

Cirratulidae unid. spp. 0.0 0.0 0.0

Etone fauchaldi 0.0 0.0 0.0

Eteone lighti 0.0 0.0 0.0

Eteone unid. spp. 0.0 0.0 0.0

Euchone limnicola 0.0 0.0 0.0

Euchone unid. spp. 0.0 0.0 0.0

Exogone lourei 0.0 0.0 0.0

Glycera unid. spp. 0.0 0.0 0.0

Glycinde armigera 0.0 0.0 0.0

Glycinde picta 0.0 0.0 0.0

Glycinde unid. sp. SF1 0.0 0.0 0.0

Glycinde unid. spp. 0.0 0.0 0.0

Harmothoe imbricata 0.0 0.0 0.0

Heteromastus filiformis 0.0 0.0 0.0

Leitoscoloplos pugettensis 0.0 0.0 0.0

Maldanidae unid. spp. 0.0 0.0 0.0

Marphysa sanguinea 0.0 0.0 0.0

Neanthes succinea 0.0 0.0 0.0

Polychaeta unid. spp. (1) 0.0 0.0 0.0

Polychaeta unid. spp. (2) 0.0 0.0 0.0

Polycirrus spp. 0.0 0.0 0.0

Polydora cornuta 0.0 0.0 0.0

Polydora unid. spp. 0.0 0.0 0.0

Pseudopolydora kempi 0.0 0.0 0.0

Pseudopolydora paucibranchiata 0.0 0.0 0.0

Sabaco elongatus 0.0 0.0 0.0

Sabellidae unid. spp. 0.0 0.0 0.0

Sphaerosyllis californiensis 0.0 0.0 0.0

Sphaerosyllis erinaceus 0.0 0.0 0.0

Sphaerosyllis unid. sp. A 0.0 0.0 0.0

Streblospio benedicti 0.0 0.0 0.0

Spionidae unid. spp. 0.0 0.0 0.0

PHYLUM ARTHROPODA

Class Copepoda

Calanoida unid. spp. 0.0 0.0 0.0

Harpacticoida unid. spp. 0.0 0.0 0.0

Class Malacostraca

Order Amphipoda

Ampelisca abdita 22.0 0.0 0.0

Ampithoe unid. spp. 0.0 0.0 0.0

Caprella californica 0.0 0.0 0.0

Corophium heteroceratum 0.0 0.0 0.0

Corophiidae unid. spp. 0.0 0.0 0.0

Grandidierella japonica 0.0 0.0 0.0

Monocorophium acherusicum 0.0 0.0 0.0

Monocorophium insidiosum 0.0 0.0 0.0

Monocorophium unid. spp. 1683.0 40.0 67.0

Oedicerotidae unid spp. 0.0 0.0 0.0

Order Cumacea

Nippoleucon hinumensis 1.0 0.0 0.0

Order Decapoda

Crangon franciscorum 0.0 1.0 0.0

Hemigrapsus oregonensis 0.0 0.0 0.0

Crab unid spp. 0.0 0.0 0.0

Order Isopoda

Gnorisphaeroma oregonensis 1.0 0.0 0.0

Paranthura japonica 0.0 0.0 0.0

Synidotea laevidorsalis 0.0 0.0 0.0

Synidotea unid. spp. 0.0 0.0 0.0

Class Ostracoda

Eusarsiella zostericola 0.0 0.0 0.0

Cyprideis unid. spp. 0.0 0.0 0.0

Class Thecostraca

Balanomorpha unid. spp. 0.0 0.0 0.0

Cirripedia unid. spp. 0.0 0.0 0.0

TAXON 27-Mar-14 24-Jun-14 24-Sep-14

PHYLUM BRYOZOA

Class Gymnolaemata

Cheilostomatida unid. Spp. 0.0 0.0 0.0

PHYLUM CHORDATA

Class Ascidiacea

Molgula mahattensis 0.0 0.0 0.0

PHYLUM CNIDARIA

Class Anthozoa

Actiniaria - attached 0.0 0.0 0.0

Actiniaria - burrowing 0.0 0.0 0.0

Actiniaria unid. spp. 0.0 0.0 0.0

Class Hydrozoa

Hydrozoa unid spp. 0.0 0.0 0.0

PHYLUM MOLLUSCA

Class Bivalvia

Bivalvia unid. spp. 0.0 0.0 0.0

Gemma gemma 0.0 0.0 0.0

Macoma petalum 0.0 0.0 0.0

Musculista senhousia 0.0 0.0 0.0

Mya arenaria 0.0 0.0 0.0

Potamocorbula amurensis 0.0 0.0 0.0

Theora lubrica 0.0 0.0 0.0

Venerupis philippinarum 0.0 0.0 0.0

Class Gastropoda

Crepidula unid. Spp. 0.0 0.0 0.0

Gastropoda unid. sp. B 0.0 0.0 0.0

Ilyanassa obsoleta 0.0 0.0 0.0

Philine unid. spp. 0.0 0.0 0.0

Urosalpinx cinerea 0.0 0.0 0.0

PHYLUM NEMATODA

Nematoda unid. spp. 0.0 0.0 0.0

PHYLUM PLATYHELMINTHES

Class Turbellaria

Turbellaria unid. sp. A 0.0 0.0 0.0

Turbellaria unid. spp. 0.0 0.0 0.0
31

Appendix 11. CC1 Species List and Abundance

TAXON 28-Jan-14 27-Feb-14 27-Mar-14

PHYLUM ANNELIDA

Class Oligochaeta

Naididae unid. spp. 0.0 0.0 0.0

Oligochaeta unid. spp. 0.0 0.0 0.0

Tubificidae unid. spp. 0.0 0.0 0.0

Class Polychaeta

Capitella capitata complex 0.0 0.0 0.0

Cirratulidae unid. spp. 0.0 0.0 0.0

Eteone fauchaldi 0.0 0.0 0.0

Eteone lighti 2.0 1.0 0.0

Eteone unid. spp. 0.0 0.0 0.0

Euchone limnicola 0.0 0.0 0.0

Euchone unid. spp. 0.0 0.0 0.0

Exogone lourei 0.0 0.0 0.0

Glycera unid. spp. 0.0 0.0 0.0

Glycinde armigera 0.0 0.0 0.0

Glycinde picta 0.0 0.0 0.0

Glycinde unid. sp. SF1 0.0 0.0 0.0

Glycinde unid. spp. 0.0 0.0 0.0

Harmothoe imbricata 0.0 0.0 0.0

Heteromastus filiformis 0.0 1.0 0.0

Leitoscoloplos pugettensis 0.0 0.0 0.0

Maldanidae unid. spp. 0.0 0.0 0.0

Marphysa sanguinea 0.0 0.0 0.0

Neanthes succinea 13.0 5.0 3.0

Polychaeta unid. spp. (1) 0.0 0.0 0.0

Polychaeta unid. spp. (2) 0.0 0.0 0.0

Polycirrus spp. 0.0 0.0 0.0

Polydora cornuta 0.0 0.0 0.0

Polydora unid. spp. 0.0 0.0 0.0

Pseudopolydora kempi 0.0 0.0 0.0

Pseudopolydora paucibranchiata 0.0 0.0 0.0

Sabaco elongatus 0.0 0.0 0.0

Sabellidae unid. spp. 0.0 0.0 0.0

Sphaerosyllis californiensis 0.0 0.0 0.0

Sphaerosyllis erinaceus 0.0 0.0 0.0

Sphaerosyllis unid. sp. A 0.0 0.0 0.0

Streblospio benedicti 1.0 7.0 0.0

Spionidae unid. spp. 0.0 0.0 0.0

PHYLUM ARTHROPODA

Class Copepoda

Calanoida unid. spp. 0.0 0.0 0.0

Harpacticoida unid. spp. 0.0 0.0 0.0

Class Malacostraca

Order Amphipoda

Ampelisca abdita 0.0 0.0 0.0

Ampithoe unid. spp. 0.0 0.0 0.0

Caprella californica 0.0 0.0 0.0

Corophium heteroceratum 0.0 0.0 0.0

Corophiidae unid. spp. 0.0 0.0 0.0

Grandidierella japonica 0.0 11.0 122.0

Monocorophium acherusicum 0.0 0.0 0.0

Monocorophium insidiosum 0.0 0.0 0.0

Monocorophium unid. spp. 0.0 156.0 1047.0

Oedicerotidae unid spp. 0.0 0.0 0.0

Order Cumacea

Nippoleucon hinumensis 0.0 0.0 0.0

Order Decapoda

Crangon franciscorum 0.0 0.0 0.0

Hemigrapsus oregonensis 0.0 0.0 0.0

Crab unid spp. 0.0 0.0 0.0

Order Isopoda

Gnorisphaeroma oregonensis 2.0 5.0 3.0

Paranthura japonica 0.0 0.0 0.0

Synidotea laevidorsalis 0.0 1.0 27.0

Synidotea unid. spp. 0.0 0.0 0.0

Class Ostracoda

Eusarsiella zostericola 0.0 0.0 0.0

Cyprideis unid. spp. 0.0 0.0 0.0

Class Thecostraca

Balanomorpha unid. spp. 0.0 0.0 0.0

Cirripedia unid. spp. 0.0 0.0 0.0

TAXON 28-Jan-14 27-Feb-14 27-Mar-14

PHYLUM BRYOZOA

Class Gymnolaemata

Cheilostomatida unid. Spp. 0.0 0.0 0.0

PHYLUM CHORDATA

Class Ascidiacea

Molgula mahattensis 0.0 0.0 0.0

PHYLUM CNIDARIA

Class Anthozoa

Actiniaria - attached 0.0 0.0 0.0

Actiniaria - burrowing 0.0 0.0 0.0

Actiniaria unid. spp. 0.0 0.0 0.0

Class Hydrozoa

Hydrozoa unid spp. 0.0 0.0 0.0

PHYLUM MOLLUSCA

Class Bivalvia

Bivalvia unid. spp. 0.0 0.0 0.0

Gemma gemma 1.0 2.0 0.0

Macoma petalum 4.0 1.0 0.0

Musculista senhousia 0.0 0.0 0.0

Mya arenaria 0.0 0.0 0.0

Potamocorbula amurensis 31.0 13.0 3.0

Theora lubrica 0.0 0.0 0.0

Venerupis philippinarum 0.0 0.0 0.0

Class Gastropoda

Crepidula unid. Spp. 0.0 0.0 0.0

Gastropoda unid. sp. B 0.0 0.0 0.0

Ilyanassa obsoleta 0.0 0.0 0.0

Philine unid. spp. 0.0 0.0 0.0

Urosalpinx cinerea 0.0 0.0 0.0

PHYLUM NEMATODA

Nematoda unid. spp. 0.0 0.0 0.0

PHYLUM PLATYHELMINTHES

Class Turbellaria

Turbellaria unid. sp. A 0.0 0.0 0.0

Turbellaria unid. spp. 0.0 0.0 0.0
32

Appendix 11. CC1 Species List and Abundance—Continued

TAXON 25-Apr-14 24-Jun-14 19-Aug-14

PHYLUM ANNELIDA

Class Oligochaeta

Naididae unid. spp. 0.0 0.0 0.0

Oligochaeta unid. spp. 0.0 0.0 0.0

Tubificidae unid. spp. 0.0 0.0 0.0

Class Polychaeta

Capitella capitata complex 0.0 0.0 0.0

Cirratulidae unid. spp. 0.0 0.0 0.0

Eteone fauchaldi 0.0 0.0 0.0

Eteone lighti 0.0 0.0 0.0

Eteone unid. spp. 0.0 0.0 0.0

Euchone limnicola 0.0 0.0 0.0

Euchone unid. spp. 0.0 0.0 0.0

Exogone lourei 0.0 0.0 0.0

Glycera unid. spp. 0.0 0.0 0.0

Glycinde armigera 0.0 0.0 0.0

Glycinde picta 0.0 0.0 0.0

Glycinde unid. sp. SF1 0.0 0.0 0.0

Glycinde unid. spp. 0.0 0.0 0.0

Harmothoe imbricata 0.0 0.0 0.0

Heteromastus filiformis 0.0 0.0 0.0

Leitoscoloplos pugettensis 0.0 0.0 0.0

Maldanidae unid. spp. 0.0 0.0 0.0

Marphysa sanguinea 0.0 0.0 0.0

Neanthes succinea 5.0 11.0 6.0

Polychaeta unid. spp. (1) 0.0 0.0 0.0

Polychaeta unid. spp. (2) 0.0 0.0 0.0

Polycirrus spp. 0.0 0.0 0.0

Polydora cornuta 0.0 0.0 0.0

Polydora unid. spp. 0.0 0.0 0.0

Pseudopolydora kempi 0.0 0.0 0.0

Pseudopolydora paucibranchiata 0.0 0.0 0.0

Sabaco elongatus 0.0 0.0 0.0

Sabellidae unid. spp. 0.0 0.0 0.0

Sphaerosyllis californiensis 0.0 0.0 0.0

Sphaerosyllis erinaceus 0.0 0.0 0.0

Sphaerosyllis unid. sp. A 0.0 0.0 0.0

Streblospio benedicti 0.0 0.0 0.0

Spionidae unid. spp. 0.0 0.0 0.0

PHYLUM ARTHROPODA

Class Copepoda

Calanoida unid. spp. 0.0 0.0 0.0

Harpacticoida unid. spp. 0.0 0.0 0.0

Class Malacostraca

Order Amphipoda

Ampelisca abdita 0.0 0.0 0.0

Ampithoe unid. spp. 0.0 0.0 0.0

Caprella californica 0.0 0.0 0.0

Corophium heteroceratum 0.0 0.0 0.0

Corophiidae unid. spp. 0.0 0.0 0.0

Grandidierella japonica 1.0 1.0 3.0

Monocorophium acherusicum 0.0 0.0 0.0

Monocorophium insidiosum 0.0 0.0 0.0

Monocorophium unid. spp. 3576.0 133.0 28.0

Oedicerotidae unid spp. 0.0 0.0 0.0

Order Cumacea

Nippoleucon hinumensis 0.0 0.0 0.0

Order Decapoda

Crangon franciscorum 0.0 0.0 0.0

Hemigrapsus oregonensis 0.0 0.0 0.0

Crab unid spp. 0.0 0.0 0.0

Order Isopoda

Gnorisphaeroma oregonensis 16.0 1.0 0.0

Paranthura japonica 0.0 0.0 0.0

Synidotea laevidorsalis 37.0 8.0 0.0

Synidotea unid. spp. 0.0 0.0 0.0

Class Ostracoda

Eusarsiella zostericola 0.0 0.0 0.0

Cyprideis unid. spp. 0.0 0.0 0.0

Class Thecostraca

Balanomorpha unid. spp. 0.0 0.0 0.0

Cirripedia unid. spp. 0.0 0.0 0.0

TAXON 25-Apr-14 24-Jun-14 19-Aug-14

PHYLUM BRYOZOA

Class Gymnolaemata

Cheilostomatida unid. Spp. 0.0 0.0 0.0

PHYLUM CHORDATA

Class Ascidiacea

Molgula mahattensis 0.0 0.0 0.0

PHYLUM CNIDARIA

Class Anthozoa

Actiniaria - attached 0.0 0.0 0.0

Actiniaria - burrowing 0.0 0.0 0.0

Actiniaria unid. spp. 0.0 0.0 0.0

Class Hydrozoa

Hydrozoa unid spp. 0.0 0.0 0.0

PHYLUM MOLLUSCA

Class Bivalvia

Bivalvia unid. spp. 0.0 0.0 0.0

Gemma gemma 1.0 0.0 0.0

Macoma petalum 3.0 0.0 3.0

Musculista senhousia 0.0 0.0 0.0

Mya arenaria 3.0 5.0 0.0

Potamocorbula amurensis 76.0 24.0 21.0

Theora lubrica 0.0 0.0 0.0

Venerupis philippinarum 0.0 0.0 0.0

Class Gastropoda

Crepidula unid. Spp. 0.0 0.0 0.0

Gastropoda unid. sp. B 0.0 0.0 0.0

Ilyanassa obsoleta 0.0 0.0 0.0

Philine unid. spp. 0.0 0.0 0.0

Urosalpinx cinerea 0.0 0.0 0.0

PHYLUM NEMATODA

Nematoda unid. spp. 0.0 0.0 0.0

PHYLUM PLATYHELMINTHES

Class Turbellaria

Turbellaria unid. sp. A 0.0 0.0 0.0

Turbellaria unid. spp. 0.0 0.0 0.0
33

Appendix 11. CC1 Species List and Abundance—Continued

TAXON 24-Sep-14 21-Oct-14 13-Nov-14

PHYLUM ANNELIDA

Class Oligochaeta

Naididae unid. spp. 0.0 0.0 0.0

Oligochaeta unid. spp. 0.0 0.0 0.0

Tubificidae unid. spp. 0.0 0.0 0.0

Class Polychaeta

Capitella capitata complex 0.0 0.0 0.0

Cirratulidae unid. spp. 0.0 0.0 0.0

Eteone fauchaldi 0.0 0.0 0.0

Eteone lighti 0.0 0.0 0.0

Eteone unid. spp. 0.0 0.0 0.0

Euchone limnicola 0.0 0.0 0.0

Euchone unid. spp. 0.0 0.0 0.0

Exogone lourei 0.0 0.0 0.0

Glycera unid. spp. 0.0 0.0 0.0

Glycinde armigera 0.0 0.0 0.0

Glycinde picta 0.0 0.0 0.0

Glycinde unid. sp. SF1 0.0 0.0 0.0

Glycinde unid. spp. 0.0 0.0 0.0

Harmothoe imbricata 0.0 0.0 0.0

Heteromastus filiformis 0.0 1.0 0.0

Leitoscoloplos pugettensis 0.0 0.0 0.0

Maldanidae unid. spp. 0.0 0.0 0.0

Marphysa sanguinea 0.0 0.0 0.0

Neanthes succinea 8.0 11.0 0.0

Polychaeta unid. spp. (1) 0.0 0.0 0.0

Polychaeta unid. spp. (2) 0.0 0.0 0.0

Polycirrus spp. 0.0 0.0 0.0

Polydora cornuta 0.0 0.0 0.0

Polydora unid. spp. 0.0 0.0 0.0

Pseudopolydora kempi 0.0 0.0 0.0

Pseudopolydora paucibranchiata 0.0 0.0 0.0

Sabaco elongatus 0.0 0.0 0.0

Sabellidae unid. spp. 0.0 0.0 0.0

Sphaerosyllis californiensis 0.0 0.0 0.0

Sphaerosyllis erinaceus 0.0 0.0 0.0

Sphaerosyllis unid. sp. A 0.0 0.0 0.0

Streblospio benedicti 0.0 0.0 0.0

Spionidae unid. spp. 0.0 0.0 0.0

PHYLUM ARTHROPODA

Class Copepoda

Calanoida unid. spp. 0.0 0.0 0.0

Harpacticoida unid. spp. 0.0 0.0 0.0

Class Malacostraca

Order Amphipoda

Ampelisca abdita 0.0 0.0 0.0

Ampithoe unid. spp. 0.0 0.0 0.0

Caprella californica 0.0 0.0 0.0

Corophium heteroceratum 0.0 0.0 0.0

Corophiidae unid. spp. 0.0 0.0 0.0

Grandidierella japonica 18.0 28.0 0.0

Monocorophium acherusicum 1.0 66.0 0.0

Monocorophium insidiosum 0.0 0.0 0.0

Monocorophium unid. spp. 215.0 4627.0 2217.0

Oedicerotidae unid spp. 0.0 0.0 0.0

Order Cumacea

Nippoleucon hinumensis 0.0 0.0 0.0

Order Decapoda

Crangon franciscorum 0.0 0.0 0.0

Hemigrapsus oregonensis 0.0 0.0 0.0

Crab unid spp. 0.0 0.0 0.0

Order Isopoda

Gnorisphaeroma oregonensis 0.0 0.0 0.0

Paranthura japonica 0.0 1.0 0.0

Synidotea laevidorsalis 3.0 16.0 0.0

Synidotea unid. spp. 0.0 1.0 0.0

Class Ostracoda

Eusarsiella zostericola 0.0 0.0 0.0

Cyprideis unid. spp. 0.0 0.0 0.0

Class Thecostraca

Balanomorpha unid. spp. 0.0 0.0 0.0

Cirripedia unid. spp. 0.0 0.0 0.0

TAXON 24-Sep-14 21-Oct-14 13-Nov-14

PHYLUM BRYOZOA

Class Gymnolaemata

Cheilostomatida unid. Spp. 0.0 0.0 0.0

PHYLUM CHORDATA

Class Ascidiacea

Molgula mahattensis 0.0 0.0 0.0

PHYLUM CNIDARIA

Class Anthozoa

Actiniaria - attached 0.0 0.0 0.0

Actiniaria - burrowing 0.0 0.0 0.0

Actiniaria unid. spp. 0.0 0.0 0.0

Class Hydrozoa

Hydrozoa unid spp. 0.0 0.0 0.0

PHYLUM MOLLUSCA

Class Bivalvia

Bivalvia unid. spp. 0.0 0.0 0.0

Gemma gemma 0.0 0.0 0.0

Macoma petalum 0.0 1.0 0.0

Musculista senhousia 0.0 0.0 0.0

Mya arenaria 0.0 0.0 0.0

Potamocorbula amurensis 5.0 29.0 1.0

Theora lubrica 0.0 0.0 0.0

Venerupis philippinarum 0.0 0.0 0.0

Class Gastropoda

Crepidula unid. Spp. 0.0 0.0 0.0

Gastropoda unid. sp. B 0.0 0.0 0.0

Ilyanassa obsoleta 0.0 0.0 0.0

Philine unid. spp. 0.0 0.0 0.0

Urosalpinx cinerea 0.0 0.0 0.0

PHYLUM NEMATODA

Nematoda unid. spp. 0.0 0.0 0.0

PHYLUM PLATYHELMINTHES

Class Turbellaria

Turbellaria unid. sp. A 0.0 0.0 0.0

Turbellaria unid. spp. 0.0 0.0 0.0
34

Appendix 12. D3 Species List and Abundance

TAXON 28-Jan-1 27-Feb-1 27-Mar-1

PHYLUM ANNELIDA

Class Oligochaeta

Naididae unid. spp. 0.0 0.0 0.0

Oligochaeta unid. spp. 0.0 0.0 0.0

Tubificidae unid. spp. 0.0 0.0 0.0

Class Polychaeta

Capitella capitata complex 0.0 0.0 0.0

Cirratulidae unid. spp. 0.0 0.0 0.0

Eteone fauchaldi 0.0 0.0 0.0

Eteone lighti 3.0 0.0 0.0

Eteone unid. spp. 0.0 0.0 0.0

Euchone limnicola 0.0 0.0 0.0

Euchone unid. spp. 0.0 0.0 0.0

Exogone lourei 0.0 0.0 0.0

Glycera unid. spp. 0.0 0.0 0.0

Glycinde armigera 0.0 0.0 0.0

Glycinde picta 0.0 1.0 0.0

Glycinde unid. sp. SF1 0.0 0.0 0.0

Glycinde unid. spp. 0.0 0.0 0.0

Harmothoe imbricata 0.0 0.0 0.0

Heteromastus filiformis 10.0 0.0 0.0

Leitoscoloplos pugettensis 0.0 0.0 0.0

Maldanidae unid. spp. 0.0 0.0 0.0

Marphysa sanguinea 0.0 0.0 0.0

Neanthes succinea 18.0 3.0 1.0

Polychaeta unid. spp. (1) 0.0 0.0 0.0

Polychaeta unid. spp. (2) 0.0 0.0 0.0

Polycirrus spp. 0.0 0.0 0.0

Polydora cornuta 0.0 0.0 0.0

Polydora unid. spp. 0.0 0.0 0.0

Pseudopolydora kempi 0.0 0.0 0.0

Pseudopolydora paucibranchiata 0.0 0.0 0.0

Sabaco elongatus 0.0 0.0 0.0

Sabellidae unid. spp. 0.0 0.0 0.0

Sphaerosyllis californiensis 0.0 0.0 0.0

Sphaerosyllis erinaceus 0.0 0.0 0.0

Sphaerosyllis unid. sp. A 0.0 0.0 0.0

Streblospio benedicti 19.0 0.0 0.0

Spionidae unid. spp. 0.0 0.0 0.0

PHYLUM ARTHROPODA

Class Copepoda

Calanoida unid. spp. 0.0 0.0 0.0

Harpacticoida unid. spp. 0.0 0.0 0.0

Class Malacostraca

Order Amphipoda

Ampelisca abdita 81.0 219.0 1.0

Ampithoe unid. spp. 0.0 0.0 0.0

Caprella californica 0.0 0.0 0.0

Corophium heteroceratum 0.0 19.0 1.0

Corophiidae unid. spp. 0.0 0.0 0.0

Grandidierella japonica 3.0 0.0 0.0

Monocorophium acherusicum 0.0 0.0 0.0

Monocorophium insidiosum 0.0 0.0 0.0

Monocorophium unid. spp. 36.0 0.0 0.0

Oedicerotidae unid spp. 0.0 0.0 0.0

Order Cumacea

Nippoleucon hinumensis 0.0 1.0 67.0

Order Decapoda

Crangon franciscorum 0.0 0.0 0.0

Hemigrapsus oregonensis 0.0 0.0 0.0

Crab unid spp. 0.0 0.0 0.0

Order Isopoda

Gnorisphaeroma oregonensis 0.0 0.0 0.0

Paranthura japonica 0.0 0.0 0.0

Synidotea laevidorsalis 0.0 1.0 0.0

Synidotea unid. spp. 0.0 0.0 0.0

Class Ostracoda

Eusarsiella zostericola 0.0 0.0 0.0

Cyprideis unid. spp. 0.0 0.0 0.0

Class Thecostraca

Balanomorpha unid. spp. 0.0 0.0 0.0

Cirripedia unid. spp. 0.0 0.0 0.0

TAXON 28-Jan-14 27-Feb-14 27-Mar-14

PHYLUM BRYOZOA

Class Gymnolaemata

Cheilostomatida unid. Spp. 0.0 0.0 0.0

PHYLUM CHORDATA

Class Ascidiacea

Molgula mahattensis 0.0 0.0 0.0

PHYLUM CNIDARIA

Class Anthozoa

Actiniaria - attached 3.0 0.0 0.0

Actiniaria - burrowing 0.0 0.0 0.0

Actiniaria unid. spp. 0.0 0.0 0.0

Class Hydrozoa

Hydrozoa unid spp. 0.0 0.0 0.0

PHYLUM MOLLUSCA

Class Bivalvia

Bivalvia unid. spp. 0.0 0.0 0.0

Gemma gemma 157.0 0.0 94.0

Macoma petalum 16.0 0.0 3.0

Musculista senhousia 0.0 0.0 0.0

Mya arenaria 1.0 1.0 0.0

Potamocorbula amurensis 9.0 0.0 0.0

Theora lubrica 0.0 1.0 1.0

Venerupis philippinarum 0.0 0.0 0.0

Class Gastropoda

Crepidula unid. Spp. 0.0 0.0 0.0

Gastropoda unid. sp. B 0.0 0.0 0.0

Ilyanassa obsoleta 0.0 0.0 1.0

Philine unid. spp. 0.0 0.0 0.0

Urosalpinx cinerea 0.0 0.0 0.0

PHYLUM NEMATODA

Nematoda unid. spp. 0.0 0.0 0.0

PHYLUM PLATYHELMINTHES

Class Turbellaria

Turbellaria unid. sp. A 0.0 0.0 0.0

Turbellaria unid. spp. 0.0 0.0 0.0
35

Appendix 12. D3 Species List and Abundance—Continued

TAXON 25-Apr-14 24-Jun-14 19-Aug-14

PHYLUM ANNELIDA

Class Oligochaeta

Naididae unid. spp. 0.0 0.0 0.0

Oligochaeta unid. spp. 0.0 0.0 0.0

Tubificidae unid. spp. 0.0 0.0 0.0

Class Polychaeta

Capitella capitata complex 0.0 0.0 0.0

Cirratulidae unid. spp. 0.0 0.0 0.0

Eteone fauchaldi 0.0 0.0 0.0

Eteone lighti 0.0 0.0 0.0

Eteone unid. spp. 0.0 0.0 0.0

Euchone limnicola 0.0 0.0 0.0

Euchone unid. spp. 0.0 0.0 0.0

Exogone lourei 0.0 0.0 0.0

Glycera unid. spp. 0.0 0.0 0.0

Glycinde armigera 0.0 0.0 0.0

Glycinde picta 0.0 1.0 0.0

Glycinde unid. sp. SF1 0.0 0.0 0.0

Glycinde unid. spp. 0.0 0.0 0.0

Harmothoe imbricata 0.0 0.0 0.0

Heteromastus filiformis 1.0 2.0 18.0

Leitoscoloplos pugettensis 0.0 0.0 0.0

Maldanidae unid. spp. 0.0 0.0 0.0

Marphysa sanguinea 0.0 0.0 0.0

Neanthes succinea 29.0 5.0 13.0

Polychaeta unid. spp. (1) 0.0 0.0 0.0

Polychaeta unid. spp. (2) 0.0 0.0 0.0

Polycirrus spp. 0.0 0.0 0.0

Polydora cornuta 0.0 0.0 0.0

Polydora unid. spp. 0.0 0.0 0.0

Pseudopolydora kempi 0.0 0.0 0.0

Pseudopolydora paucibranchiata 0.0 0.0 0.0

Sabaco elongatus 0.0 0.0 0.0

Sabellidae unid. spp. 0.0 0.0 0.0

Sphaerosyllis californiensis 0.0 0.0 0.0

Sphaerosyllis erinaceus 0.0 0.0 0.0

Sphaerosyllis unid. sp. A 0.0 0.0 0.0

Streblospio benedicti 0.0 0.0 0.0

Spionidae unid. spp. 0.0 0.0 0.0

PHYLUM ARTHROPODA

Class Copepoda

Calanoida unid. spp. 0.0 0.0 0.0

Harpacticoida unid. spp. 0.0 0.0 0.0

Class Malacostraca

Order Amphipoda

Ampelisca abdita 15.0 73.0 266.0

Ampithoe unid. spp. 0.0 0.0 0.0

Caprella californica 0.0 0.0 0.0

Corophium heteroceratum 10.0 2.0 0.0

Corophiidae unid. spp. 0.0 0.0 0.0

Grandidierella japonica 0.0 0.0 2.0

Monocorophium acherusicum 0.0 0.0 0.0

Monocorophium insidiosum 0.0 0.0 0.0

Monocorophium unid. spp. 0.0 0.0 0.0

Oedicerotidae unid spp. 0.0 0.0 0.0

Order Cumacea

Nippoleucon hinumensis 0.0 0.0 0.0

Order Decapoda

Crangon franciscorum 0.0 0.0 0.0

Hemigrapsus oregonensis 0.0 0.0 0.0

Crab unid spp. 0.0 0.0 0.0

Order Isopoda

Gnorisphaeroma oregonensis 0.0 0.0 0.0

Paranthura japonica 0.0 0.0 0.0

Synidotea laevidorsalis 3.0 3.0 0.0

Synidotea unid. spp. 0.0 0.0 0.0

Class Ostracoda

Eusarsiella zostericola 0.0 0.0 0.0

Cyprideis unid. spp. 0.0 0.0 0.0

Class Thecostraca

Balanomorpha unid. spp. 0.0 0.0 0.0

Cirripedia unid. spp. 0.0 0.0 0.0

TAXON 25-Apr-14 24-Jun-14 19-Aug-14

PHYLUM BRYOZOA

Class Gymnolaemata

Cheilostomatida unid. Spp. 0.0 0.0 0.0

PHYLUM CHORDATA

Class Ascidiacea

Molgula mahattensis 0.0 0.0 0.0

PHYLUM CNIDARIA

Class Anthozoa

Actiniaria - attached 4.0 2.0 4.0

Actiniaria - burrowing 0.0 0.0 0.0

Actiniaria unid. spp. 0.0 0.0 0.0

Class Hydrozoa

Hydrozoa unid spp. 0.0 0.0 0.0

PHYLUM MOLLUSCA

Class Bivalvia

Bivalvia unid. spp. 0.0 0.0 0.0

Gemma gemma 1068.0 1377.0 0.0

Macoma petalum 26.0 11.0 8.0

Musculista senhousia 0.0 0.0 0.0

Mya arenaria 5.0 1.0 3.0

Potamocorbula amurensis 11.0 25.0 10.0

Theora lubrica 0.0 1.0 0.0

Venerupis philippinarum 1.0 0.0 0.0

Class Gastropoda

Crepidula unid. Spp. 0.0 0.0 0.0

Gastropoda unid. sp. B 0.0 0.0 0.0

Ilyanassa obsoleta 0.0 0.0 0.0

Philine unid. spp. 0.0 0.0 0.0

Urosalpinx cinerea 0.0 0.0 0.0

PHYLUM NEMATODA

Nematoda unid. spp. 0.0 0.0 0.0

PHYLUM PLATYHELMINTHES

Class Turbellaria

Turbellaria unid. sp. A 0.0 0.0 0.0

Turbellaria unid. spp. 0.0 0.0 0.0
36

Appendix 12. D3 Species List and Abundance—Continued

TAXON 24-Sep-14 21-Oct-14 13-Nov-14

PHYLUM ANNELIDA

Class Oligochaeta

Naididae unid. spp. 0.0 0.0 0.0

Oligochaeta unid. spp. 0.0 0.0 0.0

Tubificidae unid. spp. 0.0 0.0 0.0

Class Polychaeta

Capitella capitata complex 0.0 0.0 0.0

Cirratulidae unid. spp. 0.0 0.0 0.0

Eteone fauchaldi 0.0 0.0 0.0

Eteone lighti 0.0 0.0 0.0

Eteone unid. spp. 0.0 0.0 0.0

Euchone limnicola 0.0 0.0 0.0

Euchone unid. spp. 0.0 0.0 0.0

Exogone lourei 0.0 0.0 0.0

Glycera unid. spp. 0.0 0.0 0.0

Glycinde armigera 0.0 0.0 0.0

Glycinde picta 0.0 0.0 0.0

Glycinde unid. sp. SF1 0.0 0.0 0.0

Glycinde unid. spp. 0.0 0.0 0.0

Harmothoe imbricata 0.0 0.0 0.0

Heteromastus filiformis 4.0 10.0 0.0

Leitoscoloplos pugettensis 0.0 0.0 0.0

Maldanidae unid. spp. 0.0 0.0 0.0

Marphysa sanguinea 0.0 0.0 0.0

Neanthes succinea 7.0 0.0 0.0

Polychaeta unid. spp. (1) 0.0 0.0 0.0

Polychaeta unid. spp. (2) 0.0 0.0 0.0

Polycirrus spp. 0.0 0.0 0.0

Polydora cornuta 0.0 0.0 0.0

Polydora unid. spp. 0.0 0.0 0.0

Pseudopolydora kempi 0.0 0.0 0.0

Pseudopolydora paucibranchiata 0.0 0.0 0.0

Sabaco elongatus 0.0 0.0 0.0

Sabellidae unid. spp. 0.0 0.0 0.0

Sphaerosyllis californiensis 0.0 0.0 0.0

Sphaerosyllis erinaceus 0.0 0.0 0.0

Sphaerosyllis unid. sp. A 0.0 0.0 0.0

Streblospio benedicti 0.0 0.0 0.0

Spionidae unid. spp. 0.0 0.0 0.0

PHYLUM ARTHROPODA

Class Copepoda

Calanoida unid. spp. 0.0 0.0 0.0

Harpacticoida unid. spp. 0.0 0.0 0.0

Class Malacostraca

Order Amphipoda

Ampelisca abdita 301.0 0.0 15.0

Ampithoe unid. spp. 0.0 0.0 0.0

Caprella californica 0.0 0.0 0.0

Corophium heteroceratum 0.0 2.0 0.0

Corophiidae unid. spp. 0.0 0.0 0.0

Grandidierella japonica 1.0 2.0 0.0

Monocorophium acherusicum 0.0 0.0 0.0

Monocorophium insidiosum 0.0 0.0 0.0

Monocorophium unid. spp. 0.0 0.0 0.0

Oedicerotidae unid spp. 0.0 0.0 0.0

Order Cumacea

Nippoleucon hinumensis 0.0 0.0 0.0

Order Decapoda

Crangon franciscorum 0.0 0.0 0.0

Hemigrapsus oregonensis 0.0 0.0 0.0

Crab unid spp. 0.0 0.0 0.0

Order Isopoda

Gnorisphaeroma oregonensis 0.0 0.0 0.0

Paranthura japonica 0.0 0.0 0.0

Synidotea laevidorsalis 0.0 0.0 0.0

Synidotea unid. spp. 0.0 0.0 0.0

Class Ostracoda

Eusarsiella zostericola 0.0 0.0 0.0

Cyprideis unid. spp. 0.0 0.0 0.0

Class Thecostraca

Balanomorpha unid. spp. 0.0 0.0 0.0

Cirripedia unid. spp. 0.0 0.0 0.0

TAXON 24-Sep-14 21-Oct-14 13-Nov-14

PHYLUM BRYOZOA

Class Gymnolaemata

Cheilostomatida unid. Spp. 0.0 0.0 0.0

PHYLUM CHORDATA

Class Ascidiacea

Molgula mahattensis 0.0 0.0 0.0

PHYLUM CNIDARIA

Class Anthozoa

Actiniaria - attached 2.0 0.0 0.0

Actiniaria - burrowing 0.0 0.0 0.0

Actiniaria unid. spp. 0.0 0.0 0.0

Class Hydrozoa

Hydrozoa unid spp. 0.0 0.0 0.0

PHYLUM MOLLUSCA

Class Bivalvia

Bivalvia unid. spp. 0.0 0.0 0.0

Gemma gemma 49.0 20.0 0.0

Macoma petalum 1.0 6.0 16.0

Musculista senhousia 0.0 0.0 0.0

Mya arenaria 0.0 0.0 0.0

Potamocorbula amurensis 7.0 14.0 2.0

Theora lubrica 1.0 0.0 0.0

Venerupis philippinarum 0.0 0.0 0.0

Class Gastropoda

Crepidula unid. Spp. 0.0 0.0 0.0

Gastropoda unid. sp. B 0.0 0.0 0.0

Ilyanassa obsoleta 0.0 1.0 14.0

Philine unid. spp. 0.0 0.0 0.0

Urosalpinx cinerea 0.0 0.0 0.0

PHYLUM NEMATODA

Nematoda unid. spp. 0.0 0.0 0.0

PHYLUM PLATYHELMINTHES

Class Turbellaria

Turbellaria unid. sp. A 0.0 0.0 0.0

Turbellaria unid. spp. 0.0 0.0 0.0
37

Appendix 13. SDBGC2 Species List and Abundance

TAXON 28-Jan-14 27-Feb-14 27-Mar-14

PHYLUM ANNELIDA

Class Oligochaeta

Naididae unid. spp. 0.0 0.0 0.0

Oligochaeta unid. spp. 0.0 0.0 0.0

Tubificidae unid. spp. 1.0 0.0 0.0

Class Polychaeta

Capitella capitata complex 0.0 0.0 0.0

Cirratulidae unid. spp. 0.0 0.0 0.0

Eteone fauchaldi 0.0 0.0 0.0

Eteone lighti 0.0 0.0 0.0

Eteone unid. spp. 0.0 0.0 0.0

Euchone limnicola 3.0 0.0 1.0

Euchone unid. spp. 0.0 0.0 0.0

Exogone lourei 0.0 0.0 0.0

Glycera unid. spp. 0.0 0.0 0.0

Glycinde armigera 0.0 0.0 0.0

Glycinde picta 0.0 0.0 0.0

Glycinde unid. sp. SF1 0.0 0.0 0.0

Glycinde unid. spp. 0.0 0.0 0.0

Harmothoe imbricata 0.0 0.0 1.0

Heteromastus filiformis 1.0 2.0 3.0

Leitoscoloplos pugettensis 0.0 0.0 0.0

Maldanidae unid. spp. 0.0 0.0 0.0

Marphysa sanguinea 0.0 0.0 0.0

Neanthes succinea 7.0 2.0 23.0

Polychaeta unid. spp. (1) 0.0 0.0 0.0

Polychaeta unid. spp. (2) 0.0 0.0 0.0

Polycirrus spp. 0.0 0.0 0.0

Polydora cornuta 0.0 0.0 0.0

Polydora unid. spp. 0.0 0.0 0.0

Pseudopolydora kempi 0.0 0.0 0.0

Pseudopolydora paucibranchiata 0.0 0.0 0.0

Sabaco elongatus 0.0 0.0 0.0

Sabellidae unid. spp. 0.0 0.0 0.0

Sphaerosyllis californiensis 0.0 0.0 0.0

Sphaerosyllis erinaceus 0.0 0.0 0.0

Sphaerosyllis unid. sp. A 0.0 0.0 0.0

Streblospio benedicti 84.0 0.0 0.0

Spionidae unid. spp. 0.0 0.0 0.0

PHYLUM ARTHROPODA

Class Copepoda

Calanoida unid. spp. 0.0 0.0 0.0

Harpacticoida unid. spp. 0.0 0.0 0.0

Class Malacostraca

Order Amphipoda

Ampelisca abdita 614.0 0.0 0.0

Ampithoe unid. spp. 0.0 0.0 0.0

Caprella californica 0.0 0.0 0.0

Corophium heteroceratum 49.0 0.0 521.0

Corophiidae unid. spp. 0.0 0.0 0.0

Grandidierella japonica 4.0 0.0 34.0

Monocorophium acherusicum 0.0 0.0 0.0

Monocorophium insidiosum 0.0 0.0 0.0

Monocorophium unid. spp. 0.0 0.0 0.0

Oedicerotidae unid spp. 0.0 0.0 0.0

Order Cumacea

Nippoleucon hinumensis 0.0 0.0 0.0

Order Decapoda

Crangon franciscorum 0.0 0.0 0.0

Hemigrapsus oregonensis 0.0 0.0 0.0

Crab unid spp. 0.0 0.0 0.0

Order Isopoda

Gnorisphaeroma oregonensis 0.0 0.0 0.0

Paranthura japonica 1.0 0.0 0.0

Synidotea laevidorsalis 1.0 0.0 0.0

Synidotea unid. spp. 0.0 0.0 0.0

Class Ostracoda

Eusarsiella zostericola 0.0 0.0 0.0

Cyprideis unid. spp. 0.0 0.0 0.0

Class Thecostraca

Balanomorpha unid. spp. 0.0 0.0 0.0

Cirripedia unid. spp. 0.0 0.0 0.0

TAXON 28-Jan-14 27-Feb-14 27-Mar-14

PHYLUM BRYOZOA

Class Gymnolaemata

Cheilostomatida unid. Spp. 0.0 tmtc 0.0

PHYLUM CHORDATA

Class Ascidiacea

Molgula mahattensis 0.0 0.0 0.0

PHYLUM CNIDARIA

Class Anthozoa

Actiniaria - attached 51.0 10.0 52.0

Actiniaria - burrowing 1.0 0.0 0.0

Actiniaria unid. spp. 0.0 0.0 0.0

Class Hydrozoa

Hydrozoa unid spp. 0.0 0.0 0.0

PHYLUM MOLLUSCA

Class Bivalvia

Bivalvia unid. spp. 0.0 0.0 0.0

Gemma gemma 2.0 1.0 0.0

Macoma petalum 0.0 0.0 0.0

Musculista senhousia 0.0 0.0 2.0

Mya arenaria 0.0 0.0 0.0

Potamocorbula amurensis 0.0 1.0 0.0

Theora lubrica 1.0 0.0 0.0

Venerupis philippinarum 0.0 0.0 2.0

Class Gastropoda

Crepidula unid. Spp. 0.0 0.0 0.0

Gastropoda unid. sp. B 0.0 0.0 0.0

Ilyanassa obsoleta 0.0 1.0 0.0

Philine unid. spp. 0.0 0.0 0.0

Urosalpinx cinerea 0.0 0.0 0.0

PHYLUM NEMATODA

Nematoda unid. spp. 0.0 0.0 0.0

PHYLUM PLATYHELMINTHES

Class Turbellaria

Turbellaria unid. sp. A 0.0 0.0 0.0

Turbellaria unid. spp. 0.0 0.0 0.0
38

Appendix 13. SDBGC2 Species List and Abundance—Continued

TAXON 25-Apr-14 24-Jun-14 19-Aug-14

PHYLUM ANNELIDA

Class Oligochaeta

Naididae unid. spp. 0.0 0.0 0.0

Oligochaeta unid. spp. 0.0 0.0 0.0

Tubificidae unid. spp. 0.0 0.0 3.0

Class Polychaeta

Capitella capitata complex 0.0 0.0 0.0

Cirratulidae unid. spp. 0.0 0.0 2.0

Eteone fauchaldi 1.0 0.0 1.0

Eteone lighti 0.0 0.0 0.0

Eteone unid. spp. 0.0 0.0 0.0

Euchone limnicola 0.0 0.0 1.0

Euchone unid. spp. 0.0 0.0 0.0

Exogone lourei 0.0 0.0 0.0

Glycera unid. spp. 0.0 0.0 0.0

Glycinde armigera 0.0 0.0 0.0

Glycinde picta 0.0 2.0 2.0

Glycinde unid. sp. SF1 0.0 0.0 0.0

Glycinde unid. spp. 0.0 2.0 1.0

Harmothoe imbricata 1.0 0.0 2.0

Heteromastus filiformis 0.0 0.0 27.0

Leitoscoloplos pugettensis 0.0 0.0 1.0

Maldanidae unid. spp. 0.0 0.0 0.0

Marphysa sanguinea 1.0 0.0 0.0

Neanthes succinea 1.0 7.0 33.0

Polychaeta unid. spp. (1) 0.0 0.0 0.0

Polychaeta unid. spp. (2) 0.0 0.0 0.0

Polycirrus spp. 0.0 0.0 0.0

Polydora cornuta 3.0 0.0 5.0

Polydora unid. spp. 0.0 0.0 0.0

Pseudopolydora kempi 0.0 0.0 0.0

Pseudopolydora paucibranchiata 0.0 0.0 0.0

Sabaco elongatus 0.0 0.0 0.0

Sabellidae unid. spp. 0.0 0.0 0.0

Sphaerosyllis californiensis 0.0 0.0 0.0

Sphaerosyllis erinaceus 0.0 0.0 0.0

Sphaerosyllis unid. sp. A 0.0 0.0 0.0

Streblospio benedicti 0.0 0.0 74.0

Spionidae unid. spp. 0.0 0.0 0.0

PHYLUM ARTHROPODA

Class Copepoda

Calanoida unid. spp. 0.0 0.0 0.0

Harpacticoida unid. spp. 0.0 0.0 0.0

Class Malacostraca

Order Amphipoda

Ampelisca abdita 0.0 69.0 31.0

Ampithoe unid. spp. 0.0 0.0 0.0

Caprella californica 0.0 0.0 0.0

Corophium heteroceratum 158.0 0.0 0.0

Corophiidae unid. spp. 0.0 0.0 0.0

Grandidierella japonica 1.0 0.0 0.0

Monocorophium acherusicum 0.0 0.0 2.0

Monocorophium insidiosum 0.0 0.0 0.0

Monocorophium unid. spp. 3.0 0.0 0.0

Oedicerotidae unid spp. 0.0 0.0 0.0

Order Cumacea

Nippoleucon hinumensis 2.0 0.0 0.0

Order Decapoda

Crangon franciscorum 0.0 0.0 0.0

Hemigrapsus oregonensis 0.0 0.0 0.0

Crab unid spp. 0.0 0.0 0.0

Order Isopoda

Gnorisphaeroma oregonensis 0.0 0.0 0.0

Paranthura japonica 0.0 1.0 0.0

Synidotea laevidorsalis 0.0 0.0 1.0

Synidotea unid. spp. 0.0 0.0 0.0

Class Ostracoda

Eusarsiella zostericola 0.0 0.0 1.0

Cyprideis unid. spp. 0.0 0.0 0.0

Class Thecostraca

Balanomorpha unid. spp. 0.0 0.0 0.0

Cirripedia unid. spp. 0.0 0.0 0.0

TAXON 25-Apr-14 24-Jun-14 19-Aug-14

PHYLUM BRYOZOA

Class Gymnolaemata

Cheilostomatida unid. Spp. 0.0 0.0 0.0

PHYLUM CHORDATA

Class Ascidiacea

Molgula mahattensis 0.0 0.0 0.0

PHYLUM CNIDARIA

Class Anthozoa

Actiniaria - attached 0.0 1.0 66.0

Actiniaria - burrowing 0.0 0.0 0.0

Actiniaria unid. spp. 0.0 0.0 0.0

Class Hydrozoa

Hydrozoa unid spp. 0.0 0.0 0.0

PHYLUM MOLLUSCA

Class Bivalvia

Bivalvia unid. spp. 0.0 0.0 0.0

Gemma gemma 14.0 467.0 86.0

Macoma petalum 1.0 1.0 2.0

Musculista senhousia 0.0 0.0 0.0

Mya arenaria 0.0 3.0 0.0

Potamocorbula amurensis 0.0 1.0 1.0

Theora lubrica 0.0 0.0 0.0

Venerupis philippinarum 0.0 0.0 2.0

Class Gastropoda

Crepidula unid. Spp. 0.0 0.0 0.0

Gastropoda unid. sp. B 0.0 0.0 0.0

Ilyanassa obsoleta 0.0 0.0 0.0

Philine unid. spp. 0.0 0.0 0.0

Urosalpinx cinerea 0.0 0.0 0.0

PHYLUM NEMATODA

Nematoda unid. spp. 0.0 0.0 0.0

PHYLUM PLATYHELMINTHES

Class Turbellaria

Turbellaria unid. sp. A 0.0 0.0 0.0

Turbellaria unid. spp. 0.0 0.0 0.0
39

Appendix 13. SDBGC2 Species List and Abundance—Continued

TAXON 24-Sep-14 21-Oct-14 13-Nov-14

PHYLUM ANNELIDA

Class Oligochaeta

Naididae unid. spp. 0.0 0.0 0.0

Oligochaeta unid. spp. 0.0 0.0 0.0

Tubificidae unid. spp. 0.0 13.0 0.0

Class Polychaeta

Capitella capitata complex 0.0 0.0 0.0

Cirratulidae unid. spp. 0.0 0.0 0.0

Eteone fauchaldi 0.0 0.0 0.0

Eteone lighti 0.0 1.0 5.0

Eteone unid. spp. 0.0 0.0 0.0

Euchone limnicola 0.0 10.0 5.0

Euchone unid. spp. 0.0 0.0 0.0

Exogone lourei 0.0 0.0 1.0

Glycera unid. spp. 0.0 0.0 0.0

Glycinde armigera 0.0 0.0 0.0

Glycinde picta 0.0 0.0 2.0

Glycinde unid. sp. SF1 0.0 0.0 0.0

Glycinde unid. spp. 0.0 0.0 0.0

Harmothoe imbricata 0.0 0.0 0.0

Heteromastus filiformis 0.0 15.0 25.0

Leitoscoloplos pugettensis 0.0 0.0 0.0

Maldanidae unid. spp. 0.0 0.0 0.0

Marphysa sanguinea 0.0 0.0 15.0

Neanthes succinea 0.0 41.0 17.0

Polychaeta unid. spp. (1) 1 vial 0.0 0.0

Polychaeta unid. spp. (2) 0.0 0.0 0.0

Polycirrus spp. 0.0 0.0 0.0

Polydora cornuta 0.0 0.0 0.0

Polydora unid. spp. 0.0 0.0 0.0

Pseudopolydora kempi 0.0 0.0 0.0

Pseudopolydora paucibranchiata 0.0 0.0 0.0

Sabaco elongatus 0.0 0.0 0.0

Sabellidae unid. spp. 0.0 0.0 0.0

Sphaerosyllis californiensis 0.0 0.0 0.0

Sphaerosyllis erinaceus 0.0 0.0 0.0

Sphaerosyllis unid. sp. A 0.0 0.0 0.0

Streblospio benedicti 0.0 66.0 259.0

Spionidae unid. spp. 0.0 0.0 0.0

PHYLUM ARTHROPODA

Class Copepoda

Calanoida unid. spp. 0.0 0.0 0.0

Harpacticoida unid. spp. 0.0 0.0 0.0

Class Malacostraca

Order Amphipoda

Ampelisca abdita 121.0 49.0 7.0

Ampithoe unid. spp. 0.0 0.0 0.0

Caprella californica 0.0 0.0 0.0

Corophium heteroceratum 144.0 4.0 16.0

Corophiidae unid. spp. 0.0 0.0 0.0

Grandidierella japonica 0.0 0.0 0.0

Monocorophium acherusicum 0.0 0.0 0.0

Monocorophium insidiosum 0.0 0.0 0.0

Monocorophium unid. spp. 0.0 0.0 0.0

Oedicerotidae unid spp. 0.0 0.0 0.0

Order Cumacea

Nippoleucon hinumensis 0.0 0.0 0.0

Order Decapoda

Crangon franciscorum 0.0 0.0 0.0

Hemigrapsus oregonensis 0.0 0.0 0.0

Crab unid spp. 0.0 0.0 0.0

Order Isopoda

Gnorisphaeroma oregonensis 0.0 0.0 0.0

Paranthura japonica 2.0 3.0 0.0

Synidotea laevidorsalis 0.0 0.0 0.0

Synidotea unid. spp. 0.0 0.0 0.0

Class Ostracoda

Eusarsiella zostericola 0.0 0.0 0.0

Cyprideis unid. spp. 0.0 0.0 0.0

Class Thecostraca

Balanomorpha unid. spp. 0.0 0.0 0.0

Cirripedia unid. spp. 0.0 0.0 0.0

TAXON 24-Sep-14 21-Oct-14 13-Nov-14

PHYLUM BRYOZOA

Class Gymnolaemata

Cheilostomatida unid. Spp. 0.0 0.0 0.0

PHYLUM CHORDATA

Class Ascidiacea

Molgula mahattensis 0.0 0.0 0.0

PHYLUM CNIDARIA

Class Anthozoa

Actiniaria - attached 12.0 11.0 9.0

Actiniaria - burrowing 0.0 0.0 0.0

Actiniaria unid. spp. 0.0 0.0 0.0

Class Hydrozoa

Hydrozoa unid spp. 0.0 0.0 0.0

PHYLUM MOLLUSCA

Class Bivalvia

Bivalvia unid. spp. 0.0 0.0 0.0

Gemma gemma 271.0 45.0 0.0

Macoma petalum 0.0 0.0 0.0

Musculista senhousia 1.0 0.0 0.0

Mya arenaria 0.0 0.0 0.0

Potamocorbula amurensis 0.0 1.0 0.0

Theora lubrica 0.0 0.0 0.0

Venerupis philippinarum 1.0 0.0 0.0

Class Gastropoda

Crepidula unid. Spp. 0.0 0.0 0.0

Gastropoda unid. sp. B 0.0 0.0 0.0

Ilyanassa obsoleta 0.0 0.0 0.0

Philine unid. spp. 0.0 0.0 0.0

Urosalpinx cinerea 0.0 0.0 0.0

PHYLUM NEMATODA

Nematoda unid. spp. 0.0 0.0 0.0

PHYLUM PLATYHELMINTHES

Class Turbellaria

Turbellaria unid. sp. A 0.0 0.0 0.0

Turbellaria unid. spp. 0.0 0.0 0.0
40

Appendix 14. AVS Bivalve Biomass

STATION: AVS1

Date Macoma petalum Mya arenaria Potamocorbula amurensis

August 6, 2013 5.047 0.626 16.065

March 27, 2014 10.101 0.239 0.000

June 24 2014 13.780 0.000 5.820

September 24,2014 6.220 0.000 8.098

STATION: AVS2

Date Macoma petalum Mya arenaria Potamocorbula amurensis

August 6, 2013 34.353 0.000 5.256

March 27, 2014 171.334 1.412 1.904

June 24 2014 5.572 0.000 14.157

September 24,2014 12.841 0.000 26.954

STATION: AVS3

Date Macoma petalum Mya arenaria Potamocorbula amurensis

August 6, 2013 34.353 0.000 5.256

March 27, 2014 0.000 0.000 0.000

June 24 2014 88.669 6.127 0.814

September 24,2014 11.882 5.235 5.336
41

Appendix 15. GPE Bivalve Biomass

STATION: GPE1

Date Macoma petalum Mya arenaria Potamocorbula amurensis

August 6, 2013 9.440 0.003 15.937

March 27, 2014 6.265 0.000 0.771

June 24 2014 2.379 0.000 5.580

September 24,2014 0.215 0.000 5.416

STATION: GPE2

Date Macoma petalum Mya arenaria Potamocorbula amurensis

August 6, 2013 6.967 0.000 4.238

March 27, 2014 1.358 0.000 0.242

June 24 2014 2.921 1.325 3.921

September 24,2014 8.624 1.193 3.973

STATION: GPE3

Date Macoma petalum Mya arenaria Potamocorbula amurensis

August 6, 2013 8.988 0.284 24.366

March 27, 2014 3.301 0.000 0.154

June 24 2014 11.226 0.000 10.818

September 24,2014 11.497 1.463 8.615

STATION: GPE4

Date Macoma petalum Mya arenaria Potamocorbula amurensis

August 6, 2013 19.332 0.000 7.696

March 27, 2014 0.040 0.000 0.081

June 24 2014 15.013 0.000 0.368

September 24,2014 0.000 0.000 0.000
42

Appendix 16. SB Bivalve Biomass

STATION: SB13

Date Macoma petalum Mya arenaria Potamocorbula amurensis

March 27, 2014 0.576 0.000 0.000

June 24 2014 0.138 0.000 0.000

September 24,2014 1.912 0.000 0.000

STATION: SB14

Date Macoma petalum Mya arenaria Potamocorbula amurensis

March 27, 2014 0.000 0.000 0.744

June 24 2014 0.000 0.000 0.494

September 24,2014 0.000 0.000 0.000
43

Appendix 17. CC1 Bivalve Biomass

STATION: CC1

Date Macoma petalum Mya arenaria Potamocorbula amurensis

15-Oct-09 0.000 0.000 5.186

10-Nov-09 1.043 0.357 0.710

10-Feb-10 0.000 0.000 0.168

16-Mar-10 3.013 0.000 1.392

8-Apr-10 2.345 0.000 1.552

11-May-10 1.218 0.000 0.284

7-Jul-10 0.000 0.000 4.208

9-Nov-10 0.408 0.000 20.112

19-Jan-11 0.000 0.000 8.709

15-Mar-11 0.215 0.000 3.105

27-Apr-11 0.000 0.000 2.714

23-Jun-11 0.000 0.000 1.802

7-Sep-11 0.994 0.000 55.581

5-Oct-11 0.795 0.000 41.096

2-Nov-11 0.000 0.000 13.032

3-Apr-12 0.000 0.000 161.974

13-Jun-12 0.000 0.000 27.660

10-Jul-12 0.000 0.000 13.690

6-Sep-12 1.290 0.000 52.578

11-Oct-12 2.912 0.000 40.534

15-Nov-12 0.590 0.000 29.044

10-Jan-13 2.010 11.302 10.967

7-May-13 1.127 0.335 4.743

4-Jun-13 4.665 4.091 5.278

1-Aug-13 4.342 1.760 10.396

4-Sep-13 0.319 3.071 26.366

5-Nov-13 3.268 0.000 1.578

28-Jan-14 2.317 0.000 1.730

27-Feb-14 0.078 0.000 0.968

27-Mar-14 0.000 0.000 0.263

25-Apr-24 1.089 0.141 9.771

24-Jun-14 0.000 2.542 9.170

19-Aug-14 0.684 0.000 10.961

24-Sep-14 0.000 0.000 0.733

21-Oct-14 0.454 0.000 5.333

13-Nov-14 0.000 0.000 0.926

18-Dec-14 0.531 0.000 1.495
44

Appendix 18. D3 Bivalve Biomass

STATION: D3

Date Macoma petalum Mya arenaria Potamocorbula amurensis

10-Mar-09 4.475 0.000 0.440

30-Jun-09 1.807 0.119 4.563

11-Aug-09 5.093 1.372 65.179

15-Oct-09 1.000 0.000 9.082

10-Nov-09 2.500 0.000 0.000

10-Feb-10 0.987 1.113 0.529

16-Mar-10 2.540 0.572 0.284

11-May-10 0.340 0.000 0.323

7-Jul-10 3.589 0.000 15.473

9-Nov-10 2.112 0.000 67.213

19-Jan-11 0.424 0.000 0.000

15-Mar-11 0.134 0.496 0.183

27-Apr-11 0.716 0.000 0.226

23-Jun-11 2.584 0.000 19.952

7-Sep-11 7.546 0.000 2.111

5-Oct-11 4.189 0.000 49.063

2-Nov-11 4.343 0.667 116.649

3-Apr-12 1.648 0.000 3.210

13-Jun-12 8.159 0.905 28.620

10-Jul-12 2.254 0.850 94.867

6-Sep-12 3.412 0.558 268.418

11-Oct-12 6.539 7.715 134.960

15-Nov-12 8.601 7.567 40.913

10-Jan-13 0.000 0.008 1.954

7-May-13 4.777 10.680 8.164

4-Jun-13 3.227 7.088 6.804

1-Aug-13 9.939 3.010 23.612

4-Sep-13 16.512 0.000 11.894

5-Nov-13 4.497 11.184 3.608

28-Jan-14 3.540 0.308 0.740

27-Mar-14 0.184 0.000 0.000

25-Apr-14 6.859 0.153 2.215

24-Jun-14 4.610 0.016 7.102

19-Aug-14 2.343 0.996 3.778

24-Sep-14 0.057 0.000 1.522

21-Oct-14 2.580 0.000 3.357

13-Nov-14 4.670 0.000 0.888

18-Dec-14 1.716 0.000 0.304