PM05 Aquatic Vertebrate/Invertebrate Toxicology
Exhibit Hall
8:00 AM - Monday, 10 November 2003
(PM109) Comparative evaluation of tissue residues from multiple trophic levels for fish species collected within the Willamette River, OR.
Saban, L1, Johns, D1, Colton, J1, Complita, B1, Florer, J1, Luxon, M1, 1 Windward Environmental, Seattle, WA, USA
ABSTRACT- The Portland Harbor Superfund Site is located in the lower Willamette River in Portland, OR. As part of the ecological risk assessment for this site, fish species from multiple trophic levels were collected for tissue analysis for a suite of chemicals. The number and species of fish collected were selected based on discussions with EPA and EPAs partners. These species include juvenile chinook salmon, sculpin, peamouth, smallmouth bass, northern pikeminnow, and largescale sucker. Tissue data are compared and contrasted for fish species within and between feeding guilds. These data are then compared to fish tissue data collected from other areas within the Willamette and the Columbia River Basin. Initial findings indicate differences in chemical loading based on feeding strategies and migratory status.
Key words: risk, bioaccumulation, fish, sediment