Disturbance Ecology IV

Session 19 (Contributed)
Thursday, May 30, 3:15 PM-5:00 PM, Westmoreland
Moderator: Silver, P.

3:15 (125) DICHOTOMOUS IMPACTS OF NUTRIENT ENRICHMENT AND PRODUCTIVITY IN COMMUNITIES OF VARYING DIVERSITY.
T. Romanuk. Department of Biology, McMaster University, Hamilton, Ontario, Canada L8S 4K1

3:30 (126) STREAM METABOLISM AND STORMFLOW CHEMISTRY: PATTERNS ALONG A GRADIENT OF UPLAND DISTURBANCE.
J.N. Houser and P.J. Mulholland. Environmental Sciences Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831-6036

3:45 (127) LOCAL SCALE HABITAT VARIABILITY AS IMPORTANT SECONDARY PREDICTOR OF MACROINVERTEBRATE ASSEMBLAGES IN URBANIZING CATCHMENTS.
A.H. Roy¹, A.D. Rosemond¹, and M.J. Paul². ¹Institute of Ecology, University of Georgia, Athens, GA 30602, ²Tetra Tech, Inc., 10045 Red Run Blvd., Owings Mills, MD 21117

4:00 (128) ASSESSING THE IMPACTS OF ENVIRONMENTAL STRESSORS ON MACROINVERTEBRATE INDICATORS IN OHIO.
S. Majumder¹, F.A. Fulk², and S.M. Cormier². ¹SoBran, Inc.; c/o U.S. Environmental Protection Agency, Cincinnati, Ohio, ²Ecosystems Research Branch/Ecological Exposure Research Div./National Exposure Research Lab., U.S. Environmental Protection Agency Cincinnati, Ohio

4:15 (129) IMPLICATIONS OF TREE FALL DIRECTIONALITY FOR WOOD RECRUITMENT TO MOUNTAIN STREAMS OF THE PACIFIC NORTHWEST, U.S.A.
D.J. Sobota and S.V. Gregory. Department of Fisheries and Wildlife, Oregon State University, Corvallis, Oregon, U.S.A. 97331

4:30 (130) SIMULATING THE STREAM ECOSYSTEM: THE INFLUENCE OF LAND-USE CHANGE.
N. Broekhuizen, J.C. Rutherford, J.M. Quinn, and M.R. Scarsbrook. National Institute of Water & Atmospheric Research Ltd., P.O. Box 11-115, Silverdale Rd., Hamilton, New Zealand

4:45 (131) THE EFFECT OF A SUDDEN FLOW REDUCTION ON AQUATIC INSECTS OF THE UPPER YAKIMA RIVER, WASHINGTON, USA.
C.P. Arango¹ and E.B. Snyder². ¹Department of Geography, Central Washington University, Ellensburg, WA, USA 98926, ²Department of Biology, Central Michigan University, Mt. Pleasant, MI, USA 48859