Food webs 1

Session 1 (Contributed)
Monday, June 7, 1:30 PM-3:15 PM, IRC2
Moderator: D. Magoulick

1:30 (1) How do grazers affect periphyton heterogeneity in streams? Perspectives from small-scale experiments.
M. Alvarez¹ and B.L. Peckarsky^1,3. ¹Departamento de Ecología y Biologia Animal, Universidad de Vigo, 36200 Vigo, Spain, ²Department of Entomology & Department of Ecology and Evolutionary Biology, Cornell University, Ithaca, NY 14853 , ³Rocky Mountain Biological Laboratory, PO Box 529 Crested Butte, Co 81224 USA

1:45 (2) The role of flow mediating habitat structure and the fate of organic carbon in southwestern Australian streams.
P.M. Davies. Centre of Excellence in Natural Resource Management, the University of Western Australia, Albany, Western Australia, 6330.

2:00 (3) Importance of phytoplankton to aquatic food webs in Australian dryland rivers.
S.E. Bunn¹, S.R. Balcombe¹, V. Fry¹, C.S. Fellows¹, S.K. Hamilton², and S.J. Sippel². ¹Cooperative Research Centre for Freshwater Ecology, Centre for Riverine Landscapes, Griffith University, Nathan, Queensland, Australia, 4111. , ²W.K. Kellogg Biological Station and Department of Zoology, Michigan State University, 3700 E. Gull Lake Drive, Hickory Corners, MI 49060

2:15 (4) Shifts in trophic basis of production associated with reduced detrital inputs to a southern Appalachian headwater stream.
S.L. Eggert¹ and J.B. Wallace^1,2. ¹Department of Entomology, University of Georgia, Athens, GA, USA 30602, ²Institute of Ecology, University of Georgia, Athens, GA, USA 30602

2:30 (5) The effect of landscape position on the resuspension of benthic material: implications for lake trophic dynamics.
K. Fortino¹, A.E. Hershey¹, S.C. Whalen², and C. Luecke³. ¹Department of Biology, University of North Carolina Greensboro, Greensboro, NC, ²Department of Environmental Sciences and Engineering, University of North Carolina at Chapel Hill, Chapel Hill, NC, ³College of Natural Resources, Utah State University, Logan, UT

2:45 (6) The nutrient stoichiometry of littoral herbivory: temporal and spatial variation in the elemental composition of macrozoobenthos grazers and their periphyton food.
P Fink, L Peters, and E Von Elert. Limnological Institute, University of Konstanz, 78457 Konstanz, Germany

3:00 (7) The effect of elevated atmospheric CO₂ produced leaf litter on macroinvertebrate feces:implications for downstream collectors.
E.M. Brown and N.C. Tuchman. Department of Biology, Loyola University, Chicago, IL, USA