Periphyton

Session 118 (Poster)
Tuesday, June 8, 1:30 PM-5:00 PM, SRC

(635) The importance of geothermal input and canopy cover on the diatom community composition in neotropical streams, Costa Rica.
B.K. Carlson¹ and R.J. Bixby². ¹Biology Department, St. Olaf College, Northfield, MN 55057, ²Institute of Ecology, University Of Georgia, Athens, GA, 30602

(636) The effects of benthic algae communities on nutrient uptake in a mountain stream.
G. De Guzman and M.A. Baker. Department of Biology, Utah State University, Logan, Utah, USA

(637) Does increased pH inactivate periphytic extracellular enzymes?
S.N. Francoeur and J. Duggan. Biology Department, Eastern Michigan University, Ypsilanti, MI 48197 USA

(638) An approach to setting N and P guidelines for Ontario streams.
M. Guy and P.A. Chambers. National Water Research Institute, Environment Canada, PO Box 5050, 867 Lakeshore Rd., Burlington, ON, L7R 4A6, Canada

(639) Responses of periphyton and benthic macroinvertebrates to experimental additions of nitrogen and phosphorus in a mesocosm study.
G.M. Hoyle¹, J.H. Braatne², and K.I. Ashley³. ¹Kootenai Tribe of Idaho, Fish and Wildlife Department, Bonners Ferry, ID, USA, ²Department of Fish and Wildlife Resources, University of Idaho, Moscow, ID, USA, ³Fisheries Centre, University of British Columbia, Vancouver, BC, CANADA

(640) Response of periphyton to changing nutrient loading: rating the effectiveness of better management practices in agricultural areas.
K.G. Kirkham and W.L. Perry. Department of Biology, Illinois State University, Normal, Illinois, USA 61761

(641) Evaluating diatom assemblage data from rapid periphyton surveys: a case study from the Muskegon River watershed (Michigan, USA).
L.A. Panayotoff and R.J. Stevenson. Department of Zoology, Michigan State University, East Lansing, Michigan 48824

(642) Comparative grazing efficiencies of three aquatic grazers and their impact on periphyton recovery .
J.A. Ress¹, R.L. Lowe¹, and J.R. Holomuzki². ¹Department of Biological Sciences, Bowling Green State University, Bowling Green, OH 43403, ²Department of Evolution, Ecology, and Organismal Biology, Ohio State University, Mansfield, OH 44906