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AMPHIPOD COMMUNITY RESPONSE TO STRESS INDUCED BY ALGAL MATS IN A PACIFIC NORTHWEST ESTUARY
Citation:
Lamberson, J O., D R. Young, AND H Lee II. AMPHIPOD COMMUNITY RESPONSE TO STRESS INDUCED BY ALGAL MATS IN A PACIFIC NORTHWEST ESTUARY. Presented at Pacific Estuarine Research Society, Tacoma, WA, May 17-20, 2001.
Description:
Amphipod, algal and sediment samples were taken at two- to four-week intervals from June through December, 2000 along two transects in Yaquina Bay, OR. The transects extended from within the Zostera marina bed at the river channel edge through intertidal burrowing shrimp flats to the shoreline at Idaho Point and Coquille Point. Both transects were heavily impacted by buildup of algal mats consisting primarily of Ulva and Enteromorpha spp., but the Idaho Point transect was additionally impacted by development of sulfides not noted at Coquille Point. Results indicate that there were significantly fewer amphipods at Idaho Point suggesting that sediment sulfides adversely affected amphipod populations. Aspects of amphipod community metrics in relation to sulfides, sediment grain size, organic carbon and burrowing shrimp density are discussed.