Summary of Fish Catch Results for James Island E and James Island W, 2008 and 2009

Transcription

1 Summary of Fish Results for James Island E and James Island W, 2008 and 2009 Skagit River System Cooperative Research Program December 2012 Beach seine sampling for fish was conducted at James Island E and James Island W as part of Washington State s Salmon Recovery Funding Board Project # N: WRIA2 Habitat Based Assessment of Juvenile Salmon, also locally known as the Big Picture Project. James Island E and James Island W are located on James Island within the San Juan Islands (Figure 1). Sets were made on both sides of the isthmus of the island (E and W) using large net beach seines after methods described in Skagit System Cooperative Research Department (2003). We made 28 beach seine sets over the two-year study period. Beach seining occurred monthly from March through September 2008 and April through October The beach seine sites at both James Island E and James Island W consisted primarily of gravel to mixed coarse substrate. Vegetative cover consisted of eelgrass or mixed eelgrass and macroalgae 57% of the time, and was without any cover 43% of the time (both sites). Average maximum water depth was 2.79 meters and average salinity was 30.4 parts per thousand within the area seined at both sites. Water temperatures varied by month, but ranged from a low of 7.5 C in April 2008 to a high of 12.8 C in September The temperatures did not vary more than a half a degree C between the sites on each sampling day. At James Island E we caught a total of 3,524 fish from 37 different species or species groupings over the two-year study period, including four species of juvenile salmon and two species of forage fish (Table 1). The most abundant fish species was an unidentified cod with a of 2,683 fish, present in 14.3 % of the beach seine sets. They accounted for 76.1% of the total. We kept count of Dungeness crab (3) caught by seines, as this species is of commercial and recreational interest. At James Island W we caught a total of 6,943 fish from 38 different species or species groupings over the two-year study period, including three species of juvenile salmon and three species of forage fish (Table 2). The most abundant fish species was Pacific sand lance with a of 2,637 fish, present in 21.4 % of the beach seine sets. They accounted for 38.0% of the total. Dungeness crab were not caught at this site. Please refer to Beamer and Fresh (2012) for more information regarding timing, abundance, and habitat selection of focal fish species for the Big Picture Project. The focal species are: Chinook salmon, chum salmon, pink salmon, Pacific herring, surf smelt, Pacific sand lance, and hexagrammids (greenlings and lingcod).

2 References Beamer, EM and KL Fresh Juvenile Salmon and Forage Fish Presence and Abundance in Shoreline Habitats of the San Juan Islands, : Map Applications for selected fish species. Report to San Juan County Department of Community Development and Planning and San Juan County Marine Resources Committee. Friday Harbor, WA. Skagit System Cooperative Research Department Estuarine fish sampling methods. Skagit River System Cooperative. LaConner, WA. Available:

3 Figure 1. Location of James Island E and James Island W beach seine sites.

4 Table 1. Fish summary for James Island E beach seining, 2008 and Crabs and shrimp Flatfish Forage fishes Greenlings/ lingcod Gunnels and Pricklebacks marine unknown Cancridae Pleuronectiformes Ammodytidae Clupeidae Hexagrammidae Pholidae Stichaeidae Aulorhynchidae Syngnathidae Unclassified Larval Fish Genus species, age & mark Common name in Cancer magister Dungeness crab, <6.5" sublegal size DUNGI small % Pleuronichthys coenosus CO sole CO SOLE % Ammodytes hexapterus adult Pacific sand lance, body form adult body form LANCE a % Clupea pallasii Pacific herring, adult body form adult body form HERR a % Hexagrammos KELP decagrammus Kelp greenling GRNLNG % Hexagrammos ROCK lagocephalus Rock greenling GREENLING % Ophiodon elongatus Lingcod LINGCOD % Hexagrammos Whitespot WHITESPOT stelleri greenling GR % Hexagrammos O/U spp greenling species GREENLING % Saddleback SADLBCK Pholis ornata gunnel GUNL % Pholis laeta Crescent gunnel CRES GUNL % Apodichthys flavidus Penpoint gunnel PENPT GUNL % Gunnel gunnel species GUNNEL % Xiphister BLK atropurpureus Black prickleback PRICKLE % Aulorhynchus flavidus Tubesnout TUBESNT % Syngnathus griseolineatus Bay pipefish PIPEFISH % O/U LARVAL larval fish FISH % Larval Fish tshawytscha age 0+ no external Chinook salmon, mark wild subyearling CK 0+ nem % Chinook salmon, tshawytscha age hatchery marked 0+ external mark subyearling CK 0+ em % Pacific Salmonidae salmon kisutch age 1+ Coho salmon, no external mark wild yearling CO 1+ nem % Chum salmon, keta age 0+ subyearling CH % gorbuscha age Pink salmon, 0+ subyearling PK % Other or unknown O/U Rockfish Scorpaenidae Scorpaenids rockfish species ROCKFISH % QUILLBACK Sebastes maliger Quillback rockfish ROCKFISH % Sculpins Cottidae Enophrys bison Buffalo sculpin BUFF %

5 Sculpins Sticklebacks True cods Cottidae Hemitripteridae Liparidae Gasterosteidae Gadidae Genus species, age & mark Common name in RED IRISH hemilepidotus Red Irish lord LORD % BROWN IR spinosus Brown Irish lord LORD % Blepsias Silverspotted SILVER SPOT cirrhosus sculpin SC % Leptocottus Pacific staghorn armatus sculpin STAG % Artedius fenestralis Padded sculpin PADD SCULP % Other or unknown Cottid sculpin species O/U SCULP % Myoxocephalus polyacanthoceph alus Great sculpin GRT SCULP % Clinocottus acuticeps Sharpnose sculpin SHARPNOSE % Nautichthys oculofasciatus Sailfin sculpin SAILFIN % Snailfish spp snailfish species SNAILFISH % Gasterosteus Three spined aculeatus stickleback STICKL % Theragra chalocogramma Alaska pollock POLLOCK % Microgadus proximus Pacific tomcod TOMCOD % Other or true unknown Cod cod species O/U COD %

6 Table 2. Fish summary for James Island W beach seining, 2008 and 2009 Genus species, age & mark Common name in Flatfish Pleuronectiformes Isopsetta isolepis Butter sole BUTTER SOLE % Forage fishes Greenlings/ lingcod Gunnels and Pricklebacks marine unknown Ammodytidae Clupeidae Osmeridae Hexagrammidae Pholidae Aulorhynchidae Cyclopteridae Agonidae Syngnathidae Unclassified Larval Fish Other or unknown flatfish Ammodytes hexapterus adult body form Clupea pallasii adult body form Hypomesus pretiosus adult body form Hexagrammos spp flatfish species O/U FLAT % Pacific sand lance, adult body form LANCE a % Pacific herring, adult body form HERR a % Surf smelt, adult body form SMELT a % greenling O/U species GREENLING % Hexagrammos stelleri Whitespot greenling WHITESPOT GR % Ophiodon elongatus Lingcod LINGCOD % Apodichthys Penpoint flavidus gunnel PENPT GUNL % Pholis laeta Crescent gunnel CRES GUNL % Pholis ornata Saddleback gunnel SADLBCK GUNL % Gunnel gunnel species GUNNEL % Aulorhynchus flavidus Tubesnout TUBESNT % Eumicrotremus orbis Pacific spiny lumpsucker LUMP % Other or unknown O/U Agonid poacher species POACHER % Syngnathus griseolineatus Bay pipefish PIPEFISH % O/U LARVAL Larval Fish larval fish FISH % Pacific salmon Salmonidae gorbuscha age 0+ keta age 0+ tshawytscha age 0+ no external mark Pink salmon, subyearling PK % Chum salmon, subyearling CH % Chinook salmon, wild subyearling CK 0+ nem %

7 Genus species, age & mark Common name in Rockfish Scorpaenidae Other or unknown Scorpaenids rockfish species O/U ROCKFISH % Sculpins Sea perches Cottidae Liparidae Embiotocidae Quillback rockfish QUILLBACK ROCKFISH % Sebastes maliger Artedius fenestralis Padded sculpin PADD SCULP % Blepsias cirrhosus Silverspotted sculpin SILVER SPOT SC % Clinocottus acuticeps Sharpnose sculpin SHARPNOSE % Enophrys bison Buffalo sculpin BUFF % hemilepidotus Red Irish lord RED IRISH LORD % spinosus Brown Irish lord BROWN IR LORD % Leptocottus armatus Pacific staghorn sculpin STAG % Myoxocephalus polyacanthocephalus Great sculpin GRT SCULP % Other or unknown Cottid sculpin species O/U SCULP % snailfish species SNAILFISH % Snailfish spp Cymatogaster aggregata Shiner perch SHINER % Sticklebacks Gasterosteidae Embiotoca lateralis Gasterosteus aculeatus Striped seaperch STRIPED % Three spined stickleback STICKL % True cods Gadidae Microgadus proximus Pacific tomcod TOMCOD % Other or unknown Cod true cod species O/U COD % Theragra chalocogramma Alaska pollock POLLOCK %