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Using Nestling Bald Eagles To Assess Spatial And Temporal Trends Of Environmental Contaminants, Voyageurs National Park, Minnesota, Henry Pittman
Using Nestling Bald Eagles To Assess Spatial And Temporal Trends Of Environmental Contaminants, Voyageurs National Park, Minnesota, Henry Pittman
All Theses
Bald eagles (Haliaeetus leucocephalus) are a avian species used to monitor environmental contaminants such as mercury (Hg), methylmercury (MeHg), polychlorinated biphenyls (PCBs), and organochlorine pesticides (OCs) in North America. Populations of bald eagles nesting along the Great Lakes were very slow to recover after the ban of PCBs and OCs because these compounds were very persistent. Bald eagles at Voyageurs National Park (VNP) have been monitored since 1973 and provide an opportunity to assess temporal and spatial trends of persistent environmental contaminants. Nestling bald eagle feathers were analyzed for Hg concentrations for the past 12 years. Nestling bald …
Analysis Of Mercury And Lead In Birds Of Prey From Gold-Mining Areas Of The Peruvian Amazon, Peggy Shrum
Analysis Of Mercury And Lead In Birds Of Prey From Gold-Mining Areas Of The Peruvian Amazon, Peggy Shrum
All Theses
This study was conducted to determine levels of lead and mercury in the raptors of the South-eastern Peruvian Amazon. The study took place within the Los Amigos Conservation Concession in Madre de Dios, Peru. Eighty-six raptors from among sixteen species were captured with Bal-Chatri traps. From each individual, feather samples were obtained for mercury analysis and blood was taken for lead analysis. Each raptor was then released without incident or injury.
Mercury amalgamation for gold extraction is widely used by small-scale, transient mining operations, which are numerous along the rivers and creeks in the tropical forests and other locations in …