Ecotoxicology

Session 63 (Contributed)
Thursday, June 8, 1:30 PM-3:15 PM, Egan 3
Moderator: J. Culp

1:30 (417) Long-term Analysis of Resistance and Recovery of Aquatic Communities to Metals: A Meta-Analysis .
D.R. Kashian and W.H. Clements. Fisheries and Wildlife Biology, Colorado State University, Fort Collins, Co. USA

1:45 (418) Assessing salinity sensitivity of stream macroinvertebrates using multiple lines of evidence approach.
N Horrigan¹, J.E Dunlop², B.J. Kefford³, and F Zavahir². ¹Canadian Rivers Institute, University of New Brunswick, Fredericton, New Brunswick, Canada E3B6E1, ²Department of Natural Resources and Mines (NR&M), Indooroopilly, QLD 4068, Australia, ³Biotechnology and Environmental Biology, School of Applied Sciences, RMIT University, Bundoora, 3083, Victoria, Australia.

2:00 (419) Comparison of press versus pulse exposure to insecticides: the role of sublethal effects.
J.M. Culp^1,4, K. Liber², A. Cessna³, E. Luiker^1,4, A. Alexander⁴, K. Heard⁴, D. Baird^1,4, and P.J. Van Den Brink⁵. ¹Environment Canada (NWRI), Fredericton, NB, Canada, ²Toxicology Centre, Univ. Saskatchewan, Saskatoon, SK, Canada, ³Environment Canada (NWRI), Saskatoon, SK, Canada, ⁴Canadian Rivers Institute @ Dept. Biology, Univ. New Brunswick, Fredericton, NB, Canada, ⁵Alterra Research, Wageningen Agricultural Univ., Wageningen, Netherlands

2:15 (420) Influence of elevated levels of arsenic on leaf decomposition and microbial structure and function in a headwater stream.
L.P. Reinhardt¹, N.R. Lottig², H.M. Valett¹, and M.E. Schreiber³. ¹Department of Biological Sciences, Virginia Polytechnic Institute and State University, Blacksburg, Virginia, USA 24061, ²Center for Limnology, University of Wisconsin, Madison, Wisconsin, USA 53706, ³Department of Geological Sciences, Virginia Polytechnic Institute and State University, Blacksburg, Virginia, USA 24061

2:30 (421) Toxicity and effects of produced water intrusion into a reservoir benthos.
J.C. Fisher and J.R. Bidwell. Department of Zoology, Oklahoma State University, Stillwater, Oklahoma, USA 74078

2:45 (422) Zinc toxicity and EPT organisms in the upper Arkansas River, Colorado.
S.P. Canton, L.G. Wall, and G.D. De Jong. Chadwick Ecological Consultants, Inc., 5575 S. Sycamore St., Ste. 101, Littleton, Colorado, USA 80120

3:00 (423) Acute toxicity of dissolved cadmium, copper and zinc to nymphs of the mayfly Rhithrogena hageni.
W.D. Johnston¹ and S. Brinkman². ¹Colorado Watershed Network, ²Colorado Division of Wildlife