Oral Session #55: Invertebrates in Streams: Foodwebs.

Presiding: D.R. Chalcraft, University of Illinois.
Wednesday, August 9, 2000
8:15 AM to 12:15 PM
Magpie Room - Cliff Lodge

8:30 AM	Habitat-specific variation in species interactions in a neotropical stream: The roles of predation and prey settlement rates. DALEY, B.A. and A.S. FLECKER
8:45 AM	Modeling the effects of spatial heterogeneity of resource subsidies on stream food webs. ANDERSON, K.E. and R.M. NISBET, S.D. COOPER
9:00 AM	Applications of stable isotopes for understanding anthropogenic effects of aquatic food webs in Cuatro Cienegas, Mexico. MARKS, J. and B. HUNGATE, D. HENDRICKSON
9:15 AM	Behavioral interactions between intraguild predators: Implications for risk reduction and risk enhancement. CRUMRINE, P.
9:45 AM	Linking species diversity to the functioning of ecosystems: On the importance of environmental context. CARDINALE, B.J.
10:00 AM	Break
10:15 AM	Source-sink population dynamics of a Rocky Mountain mayfly: Estimating patch quality and dispersal. CAUDILL, C.C. and B.L. PECKARSKY
10:30 AM	Indirect effects of competition: Increased vulnerability to predators. KOHLER, S.L. and L.C. HINZ, JR., M.J. WILEY
10:45 AM	Invasion biology of Asian tiger mosquito, Aedes albopictus: Competitive effects on a resident species at multiple sites in Florida. JULIANO, S.A. and L.P. LOUNIBOS, G.F. O'MEARA
11:00 AM	Stable isotopes provide evidence of dispersal by an acid-tolerant stonefly (Plecoptera) . MACNEALE, K.H. and B.L. PECKARSKY, G.E. LIKENS
11:15 AM	Context dependent species interactions and community organization: Incorporating environmental variation into ecological experiments. WELLNITZ, T. and N.L. POFF
11:30 AM	Response of stream invertebrate assemblages to perturbation: Persistence of structure in the face of marked changes in species composition. HAWKINS, C.P.
11:45 AM	Effect of bison trampling on aquatic invertebrates in streams on Antelope Island, Utah. MEADOWS, D.W.
12:00 PM	Nitrogen cycling in a subarctic stream in Iceland: Results from a 15N tracer addition. TANK, J.L. and D.M. SANZONE