Poster # 226. LIN, Bin-Le^*,1, Tokai, Akihiro, Nakanishi, Junko, ¹ Ecological Risk Analysis Team, Tsukuba, Japan, Approaches for establishing predicted-no-effect concentrations for population-level ecological risk assessment in the context of chemical substances management.

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Poster # 227. Fuentes, Soledad¹, Rick, Hans¹, Noel, Jodie¹, ¹ University of Louisiana at Lafayette, Department of Biology, Lafayette, Louisiana, USA, Monitoring Cylindrospermopsis raciborskii using a molecular method.

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Poster # 229. Giery, Sean ^*,1, Ostfeld, Richard¹, ¹ Institute of Ecosystem Studies, Millbrook, NY, The role of lizards in Lyme disease ecology: Tick burdens, reservoir competence and population density in the northeastern United States.

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Poster # 230. Shaw-Allen, Patricia¹, Susan, Norton², Susan, Cormier³, Suter, Glenn¹, ¹ US EPA Office of Research and Development, Cincinnati, OH, USA² US EPA Office of Research and Development, Washington, DC, USA³ US EPA Office of Research and Development, Cincinnati, OH, USA, Causal Analysis/Diagnosis Decision Information System for determining the causes of biological impairments in aquatic systems: Tools for evaluating metals as causal agents.

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Poster # 231. Wu, Lin^*,1, Lloyd, Kate ¹, Watt, Amy ¹, ¹ Mount Union College, Alliance, Ohio, U.S.A, Effects of environmental conditions on copper sulfate toxicity.

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Poster # 232. Alne-na-ei, Alaa, , Risk assessment of utilization of treated industrial wastewater in fish culture in Sadat City, Al-Menufiya Province, Egypt.

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Poster # 233. Baquera, Noemi^*,1, ¹ The University of Texas at El Paso, El Paso, Tx, Using amino acids to induce hyper-accumulation of arsenic and molybdenum in Helianthus argophyllus.

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Poster # 234. Craciun, Constantin^*,1, Ardelean, Aurel², Olteanu, Adrian³, Miu, Andrei⁴, Silasi-Mansat, Robert¹, Barbu-Tudoran, Lucian¹, ¹ Electron Microscopy Center, Babes-Bolyai University, Cluj-Napoca, Cluj, Romania² Vasile Goldis Western University, Arad, Arad, Romania³ Iuliu Hatieganu University of Medicine and Farmacy, Cluj-Napoca, Cluj, Romania⁴ Department of Cognitive Neurosciences, Babes-Bolyai University, Cluj-Napoca, Cluj, Romania, Effects of aluminum intoxication on rat liver. Histological and ultrastructural studies.

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Poster # 235. DeBiase, Adrienne^*,1, Taylor, Barbara ¹, McLeod, Kenneth ¹, Jackson, Brian¹, ¹ Savannah River Ecology Laboratory, Aiken, SC, USA, Out of sight, out of the food web? Uptake of contaminants from soil-covered coal fly ash by terrestrial invertebrates in a forested floodplain wetland.

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Poster # 236. George, Christine ^*,1, ¹ Stanford University, Stanford, CA, 94305, Assessment of uranium levels in groundwater in Church Rock Chapter of Navajo Nation.

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Poster # 237. Shaw, Joseph, Glaholt, Stephen^*,, Folt, Carol, Chen, Celia, Hamilton, Joshua, , Metal tolerance acquisition in Daphnia pulex.

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Poster # 238. Kim, Sung-Hyun ^*,1, Park, Jin-Sung ¹, Lee, In-Sook ¹, ¹ Department of Life Science, Ewah Womans University, Seoul, Korea, Characterization of metal-binding ligands of Echinochloa crusgalli var. frumentacea.

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Poster # 239. Kinghorn, April¹, Chan, Hing Man¹, Solomon, Patricia¹, ¹ McGill University, Montreal, Quebec, Canada, Temporal and spatial trends of mercury in fish collected in the English-Wabigoon River system in Ontario, Canada.

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