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R/CBT-24
A risk assessment for dimilin use in the northern Chesapeake Bay. A model study for non-point-source runoff
Principal Investigator:
David A. WrightStart/End Year:
1994 - 1997Institution:
Chesapeake Biological Laboratory, University of Maryland Center for Environmental ScienceCo-Principal Investigator:
Rodger Dawson, Chesapeake Biological Laboratory, University of Maryland Center for Environmental ScienceTopic(s):
- Ecosystems and Restoration
Description:
Specific objectives will be to map the usage patterns of Dimilin in the northeast Chesapeake Bay catchment area, and monitor Dimilin run-off at two field sites. Bioassay results from two crustacean species at these field sites will be compared with bioassay data from a (Dimilin-free) reference site. End points from these and laboratory bioassays will characterize the role of food in Dimilin bioavailability and will form the basis of hazard assessment for this compound's specific mode of action. Chemical application, run-off and toxicity data will be combined as a model risk assessment for non-point source pesticide run-off.
Funding Start Year
1994
Funding End Year
1997
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Featured Fellow
Nina Santos is a Ph.D. student at the Chesapeake Biological Laboratory at the University of Maryland Center for Environmental Science. For her dissertation, she is focused on small shrimp-like crustaceans called mysids – an understudied yet important part of many estuarine and coastal food webs.
Featured Research Project
Developing a habitat model for mysids, an important link in Chesapeake Bay food webs
Mysids are important mesozooplankton prey for many species of fish in Chesapeake Bay and are an important link in transferring energy from lower to upper trophic levels. Mysids also serve as biological vectors for benthic-pelagic coupling due to their diel vertical migration and omnivorous prey-switching behavior, which makes mysids important regulators of food web architecture. Despite their central role in coastal food webs, surprisingly little is known about mysid ecology and dynamics in Chesapeake Bay.
Chesapeake Quarterly Magazine
The Nature of Learning: Environmental Education for the Next Generation
