Mercury concentrations in fish from forest harvesting and fire-impacted Canadian Boreal lakes compared using stable isotopes of nitrogen.
Identifieur interne : 000123 ( PubMed/Corpus ); précédent : 000122; suivant : 000124Mercury concentrations in fish from forest harvesting and fire-impacted Canadian Boreal lakes compared using stable isotopes of nitrogen.
Auteurs : Edenise Garcia ; Richard CarignanSource :
- Environmental toxicology and chemistry / SETAC [ 0730-7268 ] ; 2005.
English descriptors
- KwdEn :
- Animals (MeSH), Body Size (drug effects), Canada (MeSH), Conservation of Natural Resources (MeSH), Environmental Monitoring (MeSH), Fires (MeSH), Fishes (metabolism), Food Chain (MeSH), Fresh Water (MeSH), Insects (chemistry), Mercury (analysis), Mercury (metabolism), Muscles (chemistry), Nitrogen Isotopes (analysis), Trees (MeSH), Water Pollutants, Chemical (analysis), Water Pollutants, Chemical (metabolism).
- MESH :
- chemical , analysis : Mercury, Nitrogen Isotopes, Water Pollutants, Chemical.
- chemical , metabolism : Mercury, Water Pollutants, Chemical.
- geographic : Canada.
- chemistry : Insects, Muscles.
- drug effects : Body Size.
- metabolism : Fishes.
- Animals, Conservation of Natural Resources, Environmental Monitoring, Fires, Food Chain, Fresh Water, Trees.
Abstract
Total mercury (Hg) concentration was determined in several piscivorous and nonpiscivorous species of fish from 38 drainage lakes with clear-cut, burnt, or undisturbed catchments located in the Canadian Boreal Shield. Mercury concentrations increased with increasing fish trophic position as estimated using stable isotopes of nitrogen (N; r2 = 0.52, 0.49, and 0.30 for cut, reference, and burnt lakes, respectively; p < 0.01). Mercury biomagnification per thousand delta15N varied from 22 to 29% in the three groups of lakes. Mercury availability to organisms at the base of the food chain in lakes with cut catchments was higher than that in reference lakes. In cut lakes, Hg concentrations in fish were significantly related to ratio of the clear-cut area to lake area (or lake volume; r = +0.82 and +0.74, respectively, p < 0.01). Both impact ratios were, in turn, significantly correlated with dissolved organic carbon. These findings suggest that differential loading of organic matter-bound Hg to lakes can affect Hg cycling. In addition, Hg concentrations exceeded the advisory limit for human consumption (0.5 microg/g wet wt) from the World Health Organization in all top predatory species (northern pike, walleye, and burbot) found in cut and in two partially burnt lakes. Thus, high Hg concentrations in fish from forest-harvested and partially burnt lakes may reflect increased exposure to Hg relative to that in lakes not having these watershed disturbances.
PubMed: 15779770
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pubmed:15779770Le document en format XML
<record><TEI><teiHeader><fileDesc><titleStmt><title xml:lang="en">Mercury concentrations in fish from forest harvesting and fire-impacted Canadian Boreal lakes compared using stable isotopes of nitrogen.</title><author><name sortKey="Garcia, Edenise" sort="Garcia, Edenise" uniqKey="Garcia E" first="Edenise" last="Garcia">Edenise Garcia</name><affiliation><nlm:affiliation>Université de Montréal, Département de Sciences biologiques, succursale Centre Ville, CP 6128, Montréal, Québec H3C 3J7, Canada. edenise.garcia@umontreal.ca</nlm:affiliation></affiliation></author><author><name sortKey="Carignan, Richard" sort="Carignan, Richard" uniqKey="Carignan R" first="Richard" last="Carignan">Richard Carignan</name></author></titleStmt><publicationStmt><idno type="wicri:source">PubMed</idno><date when="2005">2005</date><idno type="RBID">pubmed:15779770</idno><idno type="pmid">15779770</idno><idno type="wicri:Area/PubMed/Corpus">000123</idno><idno type="wicri:explorRef" wicri:stream="PubMed" wicri:step="Corpus" wicri:corpus="PubMed">000123</idno></publicationStmt><sourceDesc><biblStruct><analytic><title xml:lang="en">Mercury concentrations in fish from forest harvesting and fire-impacted Canadian Boreal lakes compared using stable isotopes of nitrogen.</title><author><name sortKey="Garcia, Edenise" sort="Garcia, Edenise" uniqKey="Garcia E" first="Edenise" last="Garcia">Edenise Garcia</name><affiliation><nlm:affiliation>Université de Montréal, Département de Sciences biologiques, succursale Centre Ville, CP 6128, Montréal, Québec H3C 3J7, Canada. edenise.garcia@umontreal.ca</nlm:affiliation></affiliation></author><author><name sortKey="Carignan, Richard" sort="Carignan, Richard" uniqKey="Carignan R" first="Richard" last="Carignan">Richard Carignan</name></author></analytic><series><title level="j">Environmental toxicology and chemistry / SETAC</title><idno type="ISSN">0730-7268</idno><imprint><date when="2005" type="published">2005</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Animals (MeSH)</term><term>Body Size (drug effects)</term><term>Canada (MeSH)</term><term>Conservation of Natural Resources (MeSH)</term><term>Environmental Monitoring (MeSH)</term><term>Fires (MeSH)</term><term>Fishes (metabolism)</term><term>Food Chain (MeSH)</term><term>Fresh Water (MeSH)</term><term>Insects (chemistry)</term><term>Mercury (analysis)</term><term>Mercury (metabolism)</term><term>Muscles (chemistry)</term><term>Nitrogen Isotopes (analysis)</term><term>Trees (MeSH)</term><term>Water Pollutants, Chemical (analysis)</term><term>Water Pollutants, Chemical (metabolism)</term></keywords><keywords scheme="MESH" type="chemical" qualifier="analysis" xml:lang="en"><term>Mercury</term><term>Nitrogen Isotopes</term><term>Water Pollutants, Chemical</term></keywords><keywords scheme="MESH" type="chemical" qualifier="metabolism" xml:lang="en"><term>Mercury</term><term>Water Pollutants, Chemical</term></keywords><keywords scheme="MESH" type="geographic" xml:lang="en"><term>Canada</term></keywords><keywords scheme="MESH" qualifier="chemistry" xml:lang="en"><term>Insects</term><term>Muscles</term></keywords><keywords scheme="MESH" qualifier="drug effects" xml:lang="en"><term>Body Size</term></keywords><keywords scheme="MESH" qualifier="metabolism" xml:lang="en"><term>Fishes</term></keywords><keywords scheme="MESH" xml:lang="en"><term>Animals</term><term>Conservation of Natural Resources</term><term>Environmental Monitoring</term><term>Fires</term><term>Food Chain</term><term>Fresh Water</term><term>Trees</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">Total mercury (Hg) concentration was determined in several piscivorous and nonpiscivorous species of fish from 38 drainage lakes with clear-cut, burnt, or undisturbed catchments located in the Canadian Boreal Shield. Mercury concentrations increased with increasing fish trophic position as estimated using stable isotopes of nitrogen (N; r2 = 0.52, 0.49, and 0.30 for cut, reference, and burnt lakes, respectively; p < 0.01). Mercury biomagnification per thousand delta15N varied from 22 to 29% in the three groups of lakes. Mercury availability to organisms at the base of the food chain in lakes with cut catchments was higher than that in reference lakes. In cut lakes, Hg concentrations in fish were significantly related to ratio of the clear-cut area to lake area (or lake volume; r = +0.82 and +0.74, respectively, p < 0.01). Both impact ratios were, in turn, significantly correlated with dissolved organic carbon. These findings suggest that differential loading of organic matter-bound Hg to lakes can affect Hg cycling. In addition, Hg concentrations exceeded the advisory limit for human consumption (0.5 microg/g wet wt) from the World Health Organization in all top predatory species (northern pike, walleye, and burbot) found in cut and in two partially burnt lakes. Thus, high Hg concentrations in fish from forest-harvested and partially burnt lakes may reflect increased exposure to Hg relative to that in lakes not having these watershed disturbances.</div></front></TEI><pubmed><MedlineCitation Owner="NLM" Status="MEDLINE"><PMID Version="1">15779770</PMID><DateCreated><Year>2005</Year><Month>03</Month><Day>22</Day></DateCreated><DateCompleted><Year>2005</Year><Month>11</Month><Day>15</Day></DateCompleted><DateRevised><Year>2013</Year><Month>11</Month><Day>21</Day></DateRevised><Article PubModel="Print"><Journal><ISSN IssnType="Print">0730-7268</ISSN><JournalIssue CitedMedium="Print"><Volume>24</Volume><Issue>3</Issue><PubDate><Year>2005</Year><Month>Mar</Month></PubDate></JournalIssue><Title>Environmental toxicology and chemistry / SETAC</Title><ISOAbbreviation>Environ. Toxicol. Chem.</ISOAbbreviation></Journal><ArticleTitle>Mercury concentrations in fish from forest harvesting and fire-impacted Canadian Boreal lakes compared using stable isotopes of nitrogen.</ArticleTitle><Pagination><MedlinePgn>685-93</MedlinePgn></Pagination><Abstract><AbstractText>Total mercury (Hg) concentration was determined in several piscivorous and nonpiscivorous species of fish from 38 drainage lakes with clear-cut, burnt, or undisturbed catchments located in the Canadian Boreal Shield. Mercury concentrations increased with increasing fish trophic position as estimated using stable isotopes of nitrogen (N; r2 = 0.52, 0.49, and 0.30 for cut, reference, and burnt lakes, respectively; p < 0.01). Mercury biomagnification per thousand delta15N varied from 22 to 29% in the three groups of lakes. Mercury availability to organisms at the base of the food chain in lakes with cut catchments was higher than that in reference lakes. In cut lakes, Hg concentrations in fish were significantly related to ratio of the clear-cut area to lake area (or lake volume; r = +0.82 and +0.74, respectively, p < 0.01). Both impact ratios were, in turn, significantly correlated with dissolved organic carbon. These findings suggest that differential loading of organic matter-bound Hg to lakes can affect Hg cycling. In addition, Hg concentrations exceeded the advisory limit for human consumption (0.5 microg/g wet wt) from the World Health Organization in all top predatory species (northern pike, walleye, and burbot) found in cut and in two partially burnt lakes. Thus, high Hg concentrations in fish from forest-harvested and partially burnt lakes may reflect increased exposure to Hg relative to that in lakes not having these watershed disturbances.</AbstractText></Abstract><AuthorList CompleteYN="Y"><Author ValidYN="Y"><LastName>Garcia</LastName><ForeName>Edenise</ForeName><Initials>E</Initials><AffiliationInfo><Affiliation>Université de Montréal, Département de Sciences biologiques, succursale Centre Ville, CP 6128, Montréal, Québec H3C 3J7, Canada. edenise.garcia@umontreal.ca</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Carignan</LastName><ForeName>Richard</ForeName><Initials>R</Initials></Author></AuthorList><Language>eng</Language><PublicationTypeList><PublicationType UI="D003160">Comparative Study</PublicationType><PublicationType UI="D016428">Journal Article</PublicationType><PublicationType UI="D013485">Research Support, Non-U.S. Gov't</PublicationType></PublicationTypeList></Article><MedlineJournalInfo><Country>United States</Country><MedlineTA>Environ Toxicol Chem</MedlineTA><NlmUniqueID>8308958</NlmUniqueID><ISSNLinking>0730-7268</ISSNLinking></MedlineJournalInfo><ChemicalList><Chemical><RegistryNumber>0</RegistryNumber><NameOfSubstance UI="D009587">Nitrogen Isotopes</NameOfSubstance></Chemical><Chemical><RegistryNumber>0</RegistryNumber><NameOfSubstance UI="D014874">Water Pollutants, Chemical</NameOfSubstance></Chemical><Chemical><RegistryNumber>FXS1BY2PGL</RegistryNumber><NameOfSubstance UI="D008628">Mercury</NameOfSubstance></Chemical></ChemicalList><CitationSubset>IM</CitationSubset><MeshHeadingList><MeshHeading><DescriptorName MajorTopicYN="N" UI="D000818">Animals</DescriptorName></MeshHeading><MeshHeading><DescriptorName MajorTopicYN="N" UI="D049628">Body Size</DescriptorName><QualifierName MajorTopicYN="N" UI="Q000187">drug effects</QualifierName></MeshHeading><MeshHeading><DescriptorName MajorTopicYN="N" Type="Geographic" UI="D002170">Canada</DescriptorName></MeshHeading><MeshHeading><DescriptorName MajorTopicYN="Y" UI="D003247">Conservation of Natural Resources</DescriptorName></MeshHeading><MeshHeading><DescriptorName MajorTopicYN="N" UI="D004784">Environmental Monitoring</DescriptorName></MeshHeading><MeshHeading><DescriptorName MajorTopicYN="Y" UI="D005390">Fires</DescriptorName></MeshHeading><MeshHeading><DescriptorName MajorTopicYN="N" UI="D005399">Fishes</DescriptorName><QualifierName MajorTopicYN="Y" UI="Q000378">metabolism</QualifierName></MeshHeading><MeshHeading><DescriptorName MajorTopicYN="N" UI="D020387">Food Chain</DescriptorName></MeshHeading><MeshHeading><DescriptorName MajorTopicYN="N" UI="D005618">Fresh Water</DescriptorName></MeshHeading><MeshHeading><DescriptorName MajorTopicYN="N" UI="D007313">Insects</DescriptorName><QualifierName MajorTopicYN="N" UI="Q000737">chemistry</QualifierName></MeshHeading><MeshHeading><DescriptorName MajorTopicYN="N" UI="D008628">Mercury</DescriptorName><QualifierName MajorTopicYN="Y" UI="Q000032">analysis</QualifierName><QualifierName MajorTopicYN="N" UI="Q000378">metabolism</QualifierName></MeshHeading><MeshHeading><DescriptorName MajorTopicYN="N" UI="D009132">Muscles</DescriptorName><QualifierName MajorTopicYN="N" UI="Q000737">chemistry</QualifierName></MeshHeading><MeshHeading><DescriptorName MajorTopicYN="N" UI="D009587">Nitrogen Isotopes</DescriptorName><QualifierName MajorTopicYN="N" UI="Q000032">analysis</QualifierName></MeshHeading><MeshHeading><DescriptorName MajorTopicYN="N" UI="D014197">Trees</DescriptorName></MeshHeading><MeshHeading><DescriptorName MajorTopicYN="N" UI="D014874">Water Pollutants, Chemical</DescriptorName><QualifierName MajorTopicYN="Y" UI="Q000032">analysis</QualifierName><QualifierName MajorTopicYN="N" UI="Q000378">metabolism</QualifierName></MeshHeading></MeshHeadingList></MedlineCitation><PubmedData><History><PubMedPubDate PubStatus="pubmed"><Year>2005</Year><Month>3</Month><Day>23</Day><Hour>9</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="medline"><Year>2005</Year><Month>11</Month><Day>16</Day><Hour>9</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="entrez"><Year>2005</Year><Month>3</Month><Day>23</Day><Hour>9</Hour><Minute>0</Minute></PubMedPubDate></History><PublicationStatus>ppublish</PublicationStatus><ArticleIdList><ArticleId IdType="pubmed">15779770</ArticleId></ArticleIdList></PubmedData></pubmed></record>Pour manipuler ce document sous Unix (Dilib)
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