You are here:
PESTICIDE INPUTS AND RISKS IN COASTAL WETLANDS PROVINCE - 1991
Citation:
Clark, J., M. Lewis, AND A. Pait. PESTICIDE INPUTS AND RISKS IN COASTAL WETLANDS PROVINCE - 1991. U.S. Environmental Protection Agency, Washington, D.C., EPA/600/J-94/017 (NTIS PB94140647), 1993.
Description:
Coastal wetland habitats may receive pesticide inputs indirectly from agricultural and forest control of weeds and insects in upland drainage areas; indirectly or directly from weed, insect, and biofouling control from development of adjacent lands for agricultural, recreational or residential uses; and directly from control activities practiced within wetlands for protection of public health or for nuisance abatement. ersistent and bioaccumulative pesticides used at upland sites have threatened coastal wetland biota. or some more biodegradable contemporary pesticides, concerns for biological impact are more a function ot the proximity of the sits of application relative to the wetland, and time available for degradation and sorption. n addition, the rate and extent of localized mixing, flushing, an stratification within the wetland can greatly affect exposure concentrations and durations for wetland biota. he short-term, direct toxic effects of pesticides on aquatic biota inhabiting coastal wetlands have been characterized in laboratory and field studies; however, the cumulative and indirect effects of repeated exposure to multiple chemicals at sublethal concentrations is a major research need.