Photo-Ecology of Benthic Habitats 1

Session 55 (Special)
Thursday, June 10, 8:00 AM-9:45 AM, IRC6
Moderator: W. Clements

8:00 (370) The influence of climate-induced alterations in dissolved organic material on metal toxicity and UV radiation in Rocky Mountain streams.
W.H. Clements¹, M. Appel², J. Barron¹, M.L. Brooks¹, W. Johnston¹, D.R. Kashian¹, D.M. McKnight², J. Meyer³, B. Prusha⁴, T.S. Schmidt¹, and R.E. Zuellig¹. ¹Colorado State University, Fort Collins, CO 80523, ²University of Colorado, Boulder, CO 80309, ³University of Wyoming, Laramie, WY 82071, ⁴North Carolina Division of Water Quality, Raleigh, NC 27699

8:15 (371) Estimation of UVB exposure in amphibian aquatic environments.
S.A. Diamond¹, G.T. Ankley¹, and P.C. Trenham². ¹U.S. EPA, 6201 Congdon Blvd., Duluth, MN 55804, ²USGS-Biological Resources Discipline, 5745 Kearny Villa Rd., CA 92123

8:30 (372) Attenuation of ultraviolet radiation in several small Pennsylvania streams.
P. Belmont and D.P. Morris. Earth and Environmental Science, Lehigh University, Bethlehem, PA 18015 USA

8:45 (373) Photochemical control of ultraviolet radiation in streams in the Colorado Rocky Mountains.
M.L. Brooks¹, W.H. Clements¹, and D.M. McKnight². ¹Department of Fishery and Wildlife Biology, Colorado State University, Fort Collins, Colorado, USA 80523, ²Institute of Arctic and Alpine Research, University of Colorado, Boulder, Colorado, USA 80309

9:00 (374) Photodegradation of DOM during the annual flood in the Okavango Delta, a large arid-zone wetland in Botswana.
D.M. McKnight and N. Mladenov. INSTAAR, University of Colorado, Boulder, Colorado, USA 80309-0450

9:15 (375) Dissolved organic matter, ultraviolet radiation, and their interactive effects on the accumulation of stream periphyton.
P.C. Frost¹, J.H. Larson¹, C.T. Cherrier², G.A. Lamberti¹, D.M. Lodge¹, and S.E. Bridgham². ¹Department of Biological Sciences, University of Notre Dame, Notre Dame, IN 46556 USA, ²Center for Ecology and Evolutionary Biology, Univeristy of Oregon, Eugene, OR 97403 USA

9:30 (376) How tolerant are benthic macroinvertebrates to UV radiation?
L.J. Shirey and C.E. Williamson. Department of Earth and Environmental Sciences, Lehigh University, Bethlehem, Pennsylvania, United States 18015