HR: 16:30h
AN: NB14E-05 INVITED     [Abstracts]
TI: Development of numeric nutrient criteria in Florida
AU: * Weaver, K
EM: kenneth.weaver@dep.state.fl.us
AF: Florida Department of Environmental Protection, 2600 Blair Stone Road, Tallahassee, FL 32399 United States
AU: Nearhoof, F
EM: Frank.Nearhoff@dep.state.fl.us
AF: Florida Department of Environmental Protection, 2600 Blair Stone Road, Tallahassee, FL 32399 United States
AU: Frydenborg, R
EM: Russel.Frydenborg@dep.state.fl.us
AF: Florida Department of Environmental Protection, 2600 Blair Stone Road, Tallahassee, FL 32399 United States
AB: Building on the success of the recently adopted numeric phosphorus criterion for the Florida Everglades, the Florida Department of Environmental Protection (FDEP) is developing numeric nutrient criteria for all Florida freshwaters. FDEP is currently pursuing a reference site-based approach for streams and lakes. Least disturbed reference lakes and streams have been delineated based on landuse patterns (Landscape Development Intensity Index) and the knowledge of local experts. As a means of reducing and explaining the overall variance among reference lakes or reference streams, FDEP is evaluating different types of natural waterbodies (e.g., Florida ecoregions based on geography, physiography, etc.). The goal of these evaluations is to subdivide natural waterbodies into homogenous groups. It is anticipated that criteria will be statistically derived, for each homogenous waterbody group, from the frequency distribution of reference site nutrient concentrations and will likely be expressed as the long-term level required to preserve the least-disturbed condition in that waterbody type. Furthermore, FDEP is pursuing the development and evaluation of biological indices (vegetation, algae, macroinvertebrates) that may be used in conjunction with the reference nutrient concentration distribution approach in establishing nutrient criteria or verifying waterbody impairment status relative to the nutrient criteria.
UR: http://www.dep.state.fl.us/water/wqssp/nutrients
DE: 4845 Nutrients and nutrient cycling
DE: 6324 Legislation and regulations
DE: 6615 Legislation and regulation
SC: North American Benthological Society [NB]
MN: 2005 Joint Assembly