SS1.04 Small-scale Biophysical Coupling in Plankton Ecology
Date: Thursday, June 13, 2002
Time: 4:30:00 PM
Location: Esquimalt
 
AmblerJW, Dept. of Biology, Millersville University, Millersville, USA, Julie.Ambler@millersville.edu
Buskey, E, J, Marine Science Institute, University of Texas at Austin, Port Aransas, USA, buskey@utmsi.utexas.edu
Hyatt, C, J, Marine Science Institute, University of Texas at Austin, Port Aransas, USA, 
 
ROLE OF BEHAVIORAL RESPONSES TO BIOLOGICAL AND PHYSICAL PROCESSES IN A PLANKTONIC FOOD WEB MODEL
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This process based food web model portrays trophic interactions in a carbon-based ecosystem, but also realistically parameterizes behavioral components (swarming, schooling, and diel cycles) in terms of the physical environment on scales relevant to individual interactions (currents and turbulence). The model is based on field and laboratory studies of phytoplankton, microzooplankton, swarming copepods, schooling mysid and fish populations, and top predators in shallow mangrove channels. Behavioral aspects in the model include the response of copepods and mysids to maintaining their position in currents and turbulence; effects of turbulence on grazer, predator and mating interactions; and diel cycles of aggregation and dispersal of swarms and schools. The goals of the model are to discover the limits of model stability, to compare these limits to field observations from independent data sets, and to quantify the role of behavior in a food web model.