Decadal re-evaluation of contaminant exposure and productivity of ospreys (Pandion haliaetus) nesting in Chesapeake Bay Regions of Concern.

摘要: Abstract The last large-scale ecotoxicological study of ospreys ( Pandion haliaetus ) in Chesapeake Bay was conducted 2000–2001 and focused on U.S. EPA-designated Regions Concern (ROCs; Baltimore Harbor/Patapsco, Anacostia/middle Potomac, Elizabeth Rivers). In 2011–2012, ROCs were re-evaluated to determine spatial temporal trends productivity contaminants. Concentrations p,p ′-DDE low eggs below the threshold associated with eggshell thinning. Eggs from Potomac Rivers had lower total PCB concentrations 2011 than 2000; however, remained unchanged Harbor. Polybrominated diphenyl ether flame retardants declined by 40%, five alternative brominated detected at levels. Osprey adequate sustain local populations, there no relation between halogenated Our findings document continued recovery osprey population, declining levels many persistent compounds, modest evidence genetic damage nestlings industrialized regions.