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DEEPWATER AND NEARSHORE FOOD WEB CHARACTERIZATIONS IN LAKE SUPERIOR
Sierszen, M E., G. S. Peterson, J. V. Scharold, AND M. Hoff. DEEPWATER AND NEARSHORE FOOD WEB CHARACTERIZATIONS IN LAKE SUPERIOR. Presented at Ecological Society of America 89th Annual Meeting, Portland, OR, August 1-6, 2004.
Due to the difficulty associated with sampling deep aquatic systems, food web relationships among deepwater fauna are often poorly known. We are characterizing nearshore versus offshore habitats in the Great Lakes and investigating food web linkages among profundal, pelagic, and nearshore gauna using stable isotope analyses. We sampled sediment, benthos, plankton, and selected fishes from Lake Superior habitats ranging from nearshore to 300 meters depth. . .This relationship shows promise as a tool to examine the neche breadth of different fishes by assessing their stable isotope signature and variability relative to a defined depth pattern of a major benthic prey population. This abstract does not necessarily reflect EPA policy.
Record Details:Record Type: DOCUMENT (PRESENTATION/ABSTRACT)
Organization:U.S. ENVIRONMENTAL PROTECTION AGENCY
OFFICE OF RESEARCH AND DEVELOPMENT
NATIONAL HEALTH AND ENVIRONMENTAL EFFECTS RESEARCH LABORATORY
MID-CONTINENT ECOLOGY DIVISION
ECOSYSTEM ASSESSMENT RESEARCH