P351 The Ohio data 1: Attributing Impact of Mixtures and Habitat Degradation via Predictive Models. Dyer, Scott*,1, Posthuma, Leo2, De Zwart, Dick2, Hawkins, Charles3, 1 The Procter & Gamble Company, Cincinnati, Ohio, USA2 RIVM, Bilthoven, The Netherlands3 Utah State University, Logan, Utah, USA

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P352 The Ohio data 2: the spatial variability of mixture risk estimates. De Zwart, Dick*,1, Mulder, Christian1, Posthuma, Leo1, Hawkins, Chuck3, Dyer, Scott2, 1 RIVM, P.O. Box 1, Bilthoven, The Netherlands3 Utah State University, Logan, UT, USA2 The Procter & Gamble Co, Cincinnati, OH

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P353 Using Predictive Models to Quantify Biological Condition in Ohio Rivers. Hawkins, Charles*,1, Dyer, Scott2, Posthuma, Leo3, De Zwart, Dick3, 1 Utah State University, Logan, UT, USA2 The Procter & Gamble Company, Cincinnati, OH, USA3 RIVM, Bilthoven, The Netherlands, The Netherlands

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P354 Landscape Influences on In-Stream Biotic Integrity: Use of macroinvertebrate metrics to identify landscape stressors in headwater catchments. Daniel, F.*,1, Griffith, Michael2, Lazorchak, James1, Troyer, Michael2, 1 National Exposure Research Laboratory, USEPA, Cincinnati, OH, USA2 National Center for Environmental Assessment, USEPA, Cincinnati, OH, USA

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P355 Health status of blue mussel populations collected from a Canadian harbour during a reproductive cycle. Hellou, Jocelyne*,1, Yeats, Phil1, Steller, Sean1, Gagne, Francois2, 1 Marine Chemistry Section, Marine Environmental Sciences Division, Bedford Institute of Oceanography, Dartmouth, Nova Scotia, Canada2 Centre St. Laurent, Environment Canada, Montreal, Quebec, Canada

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P356 Investigation of mosquito control agents in Long Island Sound and their effect on lobster health. Perkins, Christopher*,1, French, Richard2, DeGuise, Sylvain2, 1 Environmental Research Institute - UConn, Storrs, CT2 Department of Pathobiology - UConn, Storrs, CT

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P357 Large Japanese Field Mice as Indicators of Environmental Exposure to Polychlorinated Compounds. Ohtani, Shintaro*,1, Yuichi, Miyabara2,3, Yuzuru, Ishizuka1, Yuji, Kawai1, Akihisa, Izumo1, Noritoshi, Kawate4, Chiharu, Tohyama2, Yoshiro, Matsushita1, Kazuhiko, Nishimura1, 1 Agricultural, Food and Environmental Sciences Research Center of Osaka Prefecture, Habikino, Osaka, Japan2 National Institute for Environmental Studies, Tsukuba, Ibaraki, Japan3 Shinshu University, Suwa, Nagano, Japan4 Osaka Prefecture University, Sakai, Osaka, Japan

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P358 Bioassays and contaminants in largemouth bass and sediments collected from the Mobile Bay. Willett, Kristine*,1, Foran, Christy2, Metzger, Christine1, Gardinali, Piero3, 1 University of Mississippi, University, MS, USA2 University of West Virginia, Morgantown, WV, USA3 Florida International University, Miami, FL, USA

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P359 Microhabitat Invertebrate Community Metrics to Evaluate Rehabilitation of Stream Ecosystems. Maier, Kurt*,1, Grubaugh, Jack2, 1 East Tennessee State University, Johnson City, TN, USA2 University of Memphis, Memphis, TN, USA

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P360 Bioassessment of Ecological Risk of Amazonian Itchyofauna Associated to Hg Exposure. Castilhos, Zuleica Carmen*,1, Almosny, Nadia2, Souto, Paulo Sérgio3, Bidone, Edison Dausacker2, Pereira da Silva, Luis Carlos2, 1 CETEM- Center for Mineral Technology, Rio de Janeiro, Rio de Janeiro, Brazil2 Federal Fluminense University, Niterói, Rio de Janeiro, Brazil3 Agriculture College of Pará State, Belém, Pará, Brazil

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P361 Biological Effects Associated With Sediment Contamination in San Francisco Bay. Hartwell, Ian*,1, Hameedi, Jawed1, 1 NOAA, Silver Spring, MD, USA

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P362 Spatial Patterns in the Movement and Distribution of Salmonids - the importance of water quality refugia. Guillen, George*,1, Magneson, Mark1, 1 U.S. Fish and Wildlife Service, Arcata, Califorinia, USA

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