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Role of Detritivores in PCB Trophodynamics in Western Basin of Lake Erie

Objectives:  The purpose of this study is to determine the relationship between food preference, digestive physiology and susceptibility to bioaccumulation of lipophilic pollutants for a range of benthic invertebrates common in Lake Erie.  1) The first goal of this study is to determine the digestive physiology of a variety of benthic invertebrates and correlate the observed physiology to known food preferences. The study design will allow for the detection of trends in enzyme and surfactant activity in gut fluids and the correlation of their presence with feeding strategies that incorporate the ingestion of sediments. 2) The second goal will be to measure the concentration of lipophilic pollutants of sediments and benthic organisms and to correlate the observed bioaccumulation of lipophilic pollutants to the digestive physiology of the organisms. This portion of the study will be designed to detect differences in bioaccumulation between organisms sharing a habitat but differing in feeding strategy. In both portions of the study, we will focus our efforts on common organisms known to be important trophic links to fish, such as zebra and quagga mussels, Hexagenia, Gammarus, Echinogammaru and crayfish.

Status
In progress
Type
Project
Start Date
End Date
Scope of Study
Laboratory Investigation
Scale of Phenomena
Biochemical
Impact of Pollutants
Toxic Organics
Lake Basin Connecting Channels
Lake Erie
State Province
Ohio
Annex Numbers
Contaminated Sediment
Hazardous Polluting Substances - lists
Persistent Toxic Substances
Research & Development
Specific Objectives for toxic substances and effluents
Surveillance and Monitoring
Annex 17
Mass transfer of pollutants between GL Basin Ecosystem components
Relationship of contaminated sediments on ecosystem health
General
Annex
  • Annex Numbers
    Annex Numbers
    Contaminated Sediment
    Hazardous Polluting Substances - lists
    Persistent Toxic Substances
    Research & Development
    Specific Objectives for toxic substances and effluents
    Surveillance and Monitoring
  • Annex 17
    Annex 17
    Mass transfer of pollutants between GL Basin Ecosystem components
    Relationship of contaminated sediments on ecosystem health

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