Carbon and Biofilm Dynamics

Session 22 (Contributed)
Tuesday, June 8, 10:15 AM-12:00 PM, IRC5
Moderator: E. Bernhardt

10:15 (143) Tracking autochthonous carbon in two contrasting Ozark streams using stable isotopes.
S.E. Ziegler and S.L. Brisco. Department of Biological Science, University of Arkansas, Fayetteville, Arkansas, U.S.A. 72701

10:30 (144) On correcting whole-stream estimates of metabolism for groundwater input.
R.O. Hall¹ and J.L. Tank². ¹Department of Zoology and Physiology, University of Wyoming, Laramie, WY 82071, ²Department of Biological Sciences, University of Notre Dame, Notre Dame, IN 46556

10:45 (145) Headwater streams as sources of dissolved organic carbon for downstream ecosystems.
J.L. Meyer¹, S.L. Eggert², J.B. Wallace^1,2, and J.R. Webster³. ¹Institute of Ecology, University of Georgia, Athens GA USA 30602, ²Department of Entomology, University of Georgia, Athens GA USA 30602, ³Department of Biology, Virginia Tech, Blacksburg VA USA 24061

11:00 (146) Organic carbon sources in coastal Southeast Alaskan streams.
R.T. Edwards¹, D.V. DAmore¹, E. Hood², and F.J. Lange². ¹USDA Forest Service, Pacific Northwest Research Station, Juneau AK 99801, ²Environmental Science Program, University of Alaska Southeast, Juneau ak 99801

11:15 (147) Effects of solar radiation on dissolved organic matter utilization in Ozark streams.
S.L. Brisco and S.E. Ziegler. University of Arkansas

11:30 (148) The importance of metabolism in understanding nutrient spiraling in streams.
M.M. Bozeman¹, A.M. Marcarelli², and M.A. Baker¹. ¹Department of Biology, Utah State University, Logan, Utah, 84322 , ²Aquatic, Watershed and Earth Resources, Utah State University, Logan, Utah, 84322

11:45 (149) Nitrogen–fixation in undisturbed, oligotrophic streams: a chamber study.
A.M. Marcarelli¹, M.M. Bozeman², W.A. Wurtsbaugh¹, and M.A. Baker². ¹Department of Aquatic, Watershed and Earth Resources/Ecology Center, Utah State University, Logan, Utah, 84322, ²Department of Biology/Ecology Center, Utah State University, Logan, Utah, 84322