Data from: Marine foraging ecology influences mercury bioaccumulation in deep-diving northern elephant seals
Mercury contamination of oceans is prevalent worldwide and methylmercury concentrations in the mesopelagic zone (200–1000 m) are increasing more rapidly than in surface waters. Yet mercury bioaccumulation in mesopelagic predators has been understudied. Northern elephant seals (Mirounga angustirostri...
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ftdans:oai:easy.dans.knaw.nl:easy-dataset:89525 2023-07-02T03:32:08+02:00 Data from: Marine foraging ecology influences mercury bioaccumulation in deep-diving northern elephant seals Peterson, Sarah H. Ackerman, Joshua T. Costa, Daniel P. 2015-05-27T19:44:30.000+02:00 http://nbn-resolving.org/urn:nbn:nl:ui:13-60-dub7 https://easy.dans.knaw.nl/ui/datasets/id/easy-dataset:89525 unknown doi:10.5061/dryad.tc8j2/1 doi:10.1098/rspb.2015.0710 PMID:26085591 http://nbn-resolving.org/urn:nbn:nl:ui:13-60-dub7 doi:10.5061/dryad.tc8j2 https://easy.dans.knaw.nl/ui/datasets/id/easy-dataset:89525 OPEN_ACCESS: The data are archived in Easy, they are accessible elsewhere through the DOI https://dans.knaw.nl/en/about/organisation-and-policy/legal-information/DANSLicence.pdf Life sciences medicine and health care 2015 ftdans https://doi.org/10.5061/dryad.tc8j2/110.1098/rspb.2015.071010.5061/dryad.tc8j2 2023-06-13T12:45:29Z Mercury contamination of oceans is prevalent worldwide and methylmercury concentrations in the mesopelagic zone (200–1000 m) are increasing more rapidly than in surface waters. Yet mercury bioaccumulation in mesopelagic predators has been understudied. Northern elephant seals (Mirounga angustirostris) biannually travel thousands of kilometres to forage within coastal and open-ocean regions of the northeast Pacific Ocean. We coupled satellite telemetry, diving behaviour and stable isotopes (carbon and nitrogen) from 77 adult females, and showed that variability among individuals in foraging location, diving depth and δ13C values were correlated with mercury concentrations in blood and muscle. We identified three clusters of foraging strategies, and these resulted in substantially different mercury concentrations: (i) deeper-diving and offshore-foraging seals had the greatest mercury concentrations, (ii) shallower-diving and offshore-foraging seals had intermediate levels, and (iii) coastal and more northerly foraging seals had the lowest mercury concentrations. Additionally, mercury concentrations were lower at the end of the seven-month-long foraging trip (n = 31) than after the two-month- long post-breeding trip (n = 46). Our results indicate that foraging behaviour influences mercury exposure and mesopelagic predators foraging in the northeast Pacific Ocean may be at high risk for mercury bioaccumulation. Other/Unknown Material Elephant Seals Data Archiving and Networked Services (DANS): EASY (KNAW - Koninklijke Nederlandse Akademie van Wetenschappen) Pacific |
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Open Polar |
collection |
Data Archiving and Networked Services (DANS): EASY (KNAW - Koninklijke Nederlandse Akademie van Wetenschappen) |
op_collection_id |
ftdans |
language |
unknown |
topic |
Life sciences medicine and health care |
spellingShingle |
Life sciences medicine and health care Peterson, Sarah H. Ackerman, Joshua T. Costa, Daniel P. Data from: Marine foraging ecology influences mercury bioaccumulation in deep-diving northern elephant seals |
topic_facet |
Life sciences medicine and health care |
description |
Mercury contamination of oceans is prevalent worldwide and methylmercury concentrations in the mesopelagic zone (200–1000 m) are increasing more rapidly than in surface waters. Yet mercury bioaccumulation in mesopelagic predators has been understudied. Northern elephant seals (Mirounga angustirostris) biannually travel thousands of kilometres to forage within coastal and open-ocean regions of the northeast Pacific Ocean. We coupled satellite telemetry, diving behaviour and stable isotopes (carbon and nitrogen) from 77 adult females, and showed that variability among individuals in foraging location, diving depth and δ13C values were correlated with mercury concentrations in blood and muscle. We identified three clusters of foraging strategies, and these resulted in substantially different mercury concentrations: (i) deeper-diving and offshore-foraging seals had the greatest mercury concentrations, (ii) shallower-diving and offshore-foraging seals had intermediate levels, and (iii) coastal and more northerly foraging seals had the lowest mercury concentrations. Additionally, mercury concentrations were lower at the end of the seven-month-long foraging trip (n = 31) than after the two-month- long post-breeding trip (n = 46). Our results indicate that foraging behaviour influences mercury exposure and mesopelagic predators foraging in the northeast Pacific Ocean may be at high risk for mercury bioaccumulation. |
author |
Peterson, Sarah H. Ackerman, Joshua T. Costa, Daniel P. |
author_facet |
Peterson, Sarah H. Ackerman, Joshua T. Costa, Daniel P. |
author_sort |
Peterson, Sarah H. |
title |
Data from: Marine foraging ecology influences mercury bioaccumulation in deep-diving northern elephant seals |
title_short |
Data from: Marine foraging ecology influences mercury bioaccumulation in deep-diving northern elephant seals |
title_full |
Data from: Marine foraging ecology influences mercury bioaccumulation in deep-diving northern elephant seals |
title_fullStr |
Data from: Marine foraging ecology influences mercury bioaccumulation in deep-diving northern elephant seals |
title_full_unstemmed |
Data from: Marine foraging ecology influences mercury bioaccumulation in deep-diving northern elephant seals |
title_sort |
data from: marine foraging ecology influences mercury bioaccumulation in deep-diving northern elephant seals |
publishDate |
2015 |
url |
http://nbn-resolving.org/urn:nbn:nl:ui:13-60-dub7 https://easy.dans.knaw.nl/ui/datasets/id/easy-dataset:89525 |
geographic |
Pacific |
geographic_facet |
Pacific |
genre |
Elephant Seals |
genre_facet |
Elephant Seals |
op_relation |
doi:10.5061/dryad.tc8j2/1 doi:10.1098/rspb.2015.0710 PMID:26085591 http://nbn-resolving.org/urn:nbn:nl:ui:13-60-dub7 doi:10.5061/dryad.tc8j2 https://easy.dans.knaw.nl/ui/datasets/id/easy-dataset:89525 |
op_rights |
OPEN_ACCESS: The data are archived in Easy, they are accessible elsewhere through the DOI https://dans.knaw.nl/en/about/organisation-and-policy/legal-information/DANSLicence.pdf |
op_doi |
https://doi.org/10.5061/dryad.tc8j2/110.1098/rspb.2015.071010.5061/dryad.tc8j2 |
_version_ |
1770271635374342144 |