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Salmon swimming up stream

New Study Shows Pacific Salmon Transfer Contaminants to Resident Fish

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Early industrialization of the Great Lakes region has led to the release of numerous pollutants into the land, air, and water, which have been shown to be harmful to humans and wildlife in specific concentrations. Bioaccumulation and biomagnification, the processes by which pollutants build up in individual species and populations higher on the food chain, are relatively well documented and understood. Less is understood, however, about biotransportation—the process by which migratory species, such as Pacific salmon, transfer these pollutants into environments that may not have localized sources of contamination—and its potential impacts on surrounding fish and wildlife as well as...
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