Biological Mercury Hotspots in the Northeastern United States and Southeastern Canada

Autor:	Tom Butler, Thomas A. Clair, Celia Y. Chen, David C. Evers, M. Wing Goodale, Kathleen F. Lambert, Thomas M. Holsen, Young-Ji Han, Charles T. Driscoll, Neil C. Kamman
Rok vydání:	2007
Předmět:	Perch biology Ecology River watershed chemistry.chemical_element Biota biology.organism_classification Mercury (element) chemistry Indicator species Environmental chemistry Common loon Environmental science General Agricultural and Biological Sciences
Zdroj:	BioScience. 57:29-43
ISSN:	1525-3244 0006-3568
Popis:	Biological mercury (Hg) hotspots were identified in the northeastern United States and southeastern Canada using a data set of biotic Hg concentrations. Eight layers representing three major taxa and more than 7300 observations were used to locate five biological Hg hotspots and nine areas of concern. The yellow perch and common loon were chosen as indicator species for the human and ecological effects of Hg, respectively. Biological Hg hotspots receive elevated atmospheric Hg deposition, have high landscape sensitivity, and/or experience large reservoir fluctuations. In the Merrimack River watershed, local Hg emissions are linked to elevated local deposition and high Hg concentrations in biota. Time series data for this region suggest that reductions in Hg emissions from local sources can lead to rapid reductions of Hg in biota. An enhanced Hg monitoring network is needed to further document areas of high deposition, biological hotspots, and the response to emissions reductions and other mitigation strategies.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::596496b9449d94eb98c382346e89f610 https://doi.org/10.1641/b570107 Zobrazit plný text záznamu Plný text ve formátu PDF Plný text ve formátu HTML
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