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Site-specific fish tissue mercury at four eastern North Carolina National Wildlife Refuges
Zusammenfassung
- Art der Freigabe
- a one-off release of a single dataset
- Datenlizenz
- Not Applicable
- Inhaltslizenz
- Creative Commons CCZero
- Bestätigung
- automatisiert zertifiziert
- Veröffentlichungsdatum
- 24 April 2014
- Änderungsdatum
- 27 August 2015
- Herausgeber
- US Fish and Wildlife Service, Department of the Interior
- Schlagworte
- environmental-contaminants-investigation, fillet, fish-tissue, piscivorous-water-birds
- Identifier
- site-specific-fish-tissue-mercury-at-four-eastern-north-carolina-national-wildlife-refuges
- Landing Page
- http://catalog.data.gov/dataset/site-specific-fish-tissue-mercury-at-four-eastern-north-carolina-national-wildlife-refuges
- Maintainers
- Richard Easterbrook richard_easterbrook@fws.gov
Community-Bestätigung
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Beschreibung
Mercury concentrations above levels of concerns in fish tissue have prompted the North Carolina Division of Public Heath to issue a consumption advisory for several species of freshwater fish in eastern North Carolina. Historic fish tissue data collected by the North Carolina Division of Water Quality and the U.S. Fish and Wildlife Service from eastern North Carolina National Wildlife Refuges NWRs documented mercury concentrations at or above levels of concern for public consumption in a few fish species e.g., largemouth bass. Other game species have not been frequently sampled e.g., crappie, flier, and bluegill. Based on this concern, updated information on the mercury concentration in important recreational fish species was collected to inform refuge fisheries management. Between 2004 and 2006, 305 fillet and 18 whole body fish samples were collected from Alligator River, Mattamuskeet, Pocosin Lakes, and Pee Dee NWRs. Mercury concentrations in fish fillets indicate that catfish geometric mean 0.16 ppmww; range 0.01 to 0.99 ppmww and sunfish geometric mean 0.18 ppmww; range 0.030.46 ppmww species are generally below the state action level for issuing public health consumption advisories. Half of the perch geometric mean 0.33 ppmww; range 0.130.67 ppmww and 84 percent of largemouth bass geometric mean 0.57 ppmww; range 0.031.6 ppmww fillets exceeded human consumptive levels of concern. In addition to the State fish consumption advisory, our data would support speciesspecific fish size thresholds for refuge waters to minimize health risks of mercury exposure for the general public for bluegill eat fish smaller than 36 cm total length and largemouth bass eat fish smaller than 21 cm total length. Because bluegill rarely exceed 36 cm in length, most individuals caught on refuges are safe to eat. This is consistent with the States fish consumption advice. The current legal size limit for largemouth bass of 35.6 cm precludes consumption of small individuals with lower mercury levels in refuge waters; only catch and release fishing or limited consumption consistent with the States advisory: http:www.epi.state.nc.usepifishsafefish.html for this species is advised. The toxicological significance of fish tissue mercury residues to piscivorous birds was also evaluated. Mercury concentrations measured in whole fish frequently exceeded levels reported to adversely affect sensitive avian species. Estimates of whole fish mercury concentrations based on fillet mercury residues also frequently 84 percent exceeded avian dietary toxicity thresholds. A comprehensive wildlife risk assessment could be performed with dietary input modeling and site specific exposure assessment.
Allgemeine Informationen
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Die Beschreibung der Daten befindet sich unter
http://catalog.data.gov/dataset/site-specific-fish-tissue-mercury-at-four-eastern-north-carolina-national-wildlife-refuges Do you think this data is incorrect? Let us know
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Die Daten werden veröffentlicht von…
US Fish and Wildlife Service, Department of the Interior Do you think this data is incorrect? Let us know
Rechtliche Information
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Die Nutzungsbestimmungen finden sich unter
http://catalog.data.gov/dataset/site-specific-fish-tissue-mercury-at-four-eastern-north-carolina-national-wildlife-refuges Do you think this data is incorrect? Let us know
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Under which licence can people outside the US reuse this data?
Creative Commons CCZero Do you think this data is incorrect? Let us know
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Es gibt
yes, and the rights are all held by the same person or organisation Do you think this data is incorrect? Let us know
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Die Inhalte können im Rahmen der folgenden Lizenz weiterverwendet werden
Creative Commons CCZero Do you think this data is incorrect? Let us know
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Die Daten werden veröffentlicht unter
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Einen Ansprechpartner zu diesen Daten finden Sie unter
http://catalog.data.gov/dataset/site-specific-fish-tissue-mercury-at-four-eastern-north-carolina-national-wildlife-refuges Do you think this data is incorrect? Let us know
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Wie sie Verbesserungen dieser Daten vorschlagen können erfahren Sie unter
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