Non-parametric analysis of the spatio-temporal variability in the fatty-acid profiles among Greenland sharks
Shifting prey distributions due to global warming are expected to generate dramatic ecosystem-wide changes in trophic structure within Arctic marine ecosystems. Yet a relatively poor understanding of contemporary Arctic food webs makes it difficult to predict the consequences of such changes for Arc...
Published in: | Journal of the Marine Biological Association of the United Kingdom |
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Language: | English |
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2016
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Online Access: | http://dx.doi.org/10.1017/s002531541600148x https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S002531541600148X |
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crcambridgeupr:10.1017/s002531541600148x 2024-03-03T08:41:27+00:00 Non-parametric analysis of the spatio-temporal variability in the fatty-acid profiles among Greenland sharks Steeves, Holly N. Mcmeans, Bailey Field, Chris Stewart, Connie Arts, Michael T. Fisk, Aaron T. Lydersen, Christian Kovacs, Kit M. Macneil, M. Aaron 2016 http://dx.doi.org/10.1017/s002531541600148x https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S002531541600148X en eng Cambridge University Press (CUP) https://www.cambridge.org/core/terms Journal of the Marine Biological Association of the United Kingdom volume 98, issue 3, page 627-633 ISSN 0025-3154 1469-7769 Aquatic Science journal-article 2016 crcambridgeupr https://doi.org/10.1017/s002531541600148x 2024-02-08T08:28:30Z Shifting prey distributions due to global warming are expected to generate dramatic ecosystem-wide changes in trophic structure within Arctic marine ecosystems. Yet a relatively poor understanding of contemporary Arctic food webs makes it difficult to predict the consequences of such changes for Arctic predators. Doing so requires quantitative approaches that can track contemporary changes in predator diets through time, using accurate, well-defined methods. Here we use fatty acids (FA) to quantify differences in consumer diet using permutational multivariate analysis of variance tests that characterize spatial and temporal changes in consumer FA signatures. Specifically we explore differences in Greenland shark ( Somniosus microcephalus ) FA to differentiate their potential trophic role between Svalbard, Norway and Cumberland Sound, Canada. Greenland shark FA signatures revealed significant inter-annual differences, probably driven by varying seal and Greenland halibut responses to environmental conditions such as the NAO, bottom temperature, and annual sea-ice extent. Uncommon FA were also found to play an important role in driving spatial and temporal differences in Greenland shark FA profiles. Our statistical approach should facilitate quantification of changing consumer diets across a range of marine ecosystems. Article in Journal/Newspaper Arctic Cumberland Sound Global warming Greenland Sea ice Somniosus microcephalus Svalbard Cambridge University Press Arctic Svalbard Canada Greenland Norway Cumberland Sound ENVELOPE(-66.014,-66.014,65.334,65.334) Journal of the Marine Biological Association of the United Kingdom 98 3 627 633 |
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Open Polar |
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Cambridge University Press |
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crcambridgeupr |
language |
English |
topic |
Aquatic Science |
spellingShingle |
Aquatic Science Steeves, Holly N. Mcmeans, Bailey Field, Chris Stewart, Connie Arts, Michael T. Fisk, Aaron T. Lydersen, Christian Kovacs, Kit M. Macneil, M. Aaron Non-parametric analysis of the spatio-temporal variability in the fatty-acid profiles among Greenland sharks |
topic_facet |
Aquatic Science |
description |
Shifting prey distributions due to global warming are expected to generate dramatic ecosystem-wide changes in trophic structure within Arctic marine ecosystems. Yet a relatively poor understanding of contemporary Arctic food webs makes it difficult to predict the consequences of such changes for Arctic predators. Doing so requires quantitative approaches that can track contemporary changes in predator diets through time, using accurate, well-defined methods. Here we use fatty acids (FA) to quantify differences in consumer diet using permutational multivariate analysis of variance tests that characterize spatial and temporal changes in consumer FA signatures. Specifically we explore differences in Greenland shark ( Somniosus microcephalus ) FA to differentiate their potential trophic role between Svalbard, Norway and Cumberland Sound, Canada. Greenland shark FA signatures revealed significant inter-annual differences, probably driven by varying seal and Greenland halibut responses to environmental conditions such as the NAO, bottom temperature, and annual sea-ice extent. Uncommon FA were also found to play an important role in driving spatial and temporal differences in Greenland shark FA profiles. Our statistical approach should facilitate quantification of changing consumer diets across a range of marine ecosystems. |
format |
Article in Journal/Newspaper |
author |
Steeves, Holly N. Mcmeans, Bailey Field, Chris Stewart, Connie Arts, Michael T. Fisk, Aaron T. Lydersen, Christian Kovacs, Kit M. Macneil, M. Aaron |
author_facet |
Steeves, Holly N. Mcmeans, Bailey Field, Chris Stewart, Connie Arts, Michael T. Fisk, Aaron T. Lydersen, Christian Kovacs, Kit M. Macneil, M. Aaron |
author_sort |
Steeves, Holly N. |
title |
Non-parametric analysis of the spatio-temporal variability in the fatty-acid profiles among Greenland sharks |
title_short |
Non-parametric analysis of the spatio-temporal variability in the fatty-acid profiles among Greenland sharks |
title_full |
Non-parametric analysis of the spatio-temporal variability in the fatty-acid profiles among Greenland sharks |
title_fullStr |
Non-parametric analysis of the spatio-temporal variability in the fatty-acid profiles among Greenland sharks |
title_full_unstemmed |
Non-parametric analysis of the spatio-temporal variability in the fatty-acid profiles among Greenland sharks |
title_sort |
non-parametric analysis of the spatio-temporal variability in the fatty-acid profiles among greenland sharks |
publisher |
Cambridge University Press (CUP) |
publishDate |
2016 |
url |
http://dx.doi.org/10.1017/s002531541600148x https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S002531541600148X |
long_lat |
ENVELOPE(-66.014,-66.014,65.334,65.334) |
geographic |
Arctic Svalbard Canada Greenland Norway Cumberland Sound |
geographic_facet |
Arctic Svalbard Canada Greenland Norway Cumberland Sound |
genre |
Arctic Cumberland Sound Global warming Greenland Sea ice Somniosus microcephalus Svalbard |
genre_facet |
Arctic Cumberland Sound Global warming Greenland Sea ice Somniosus microcephalus Svalbard |
op_source |
Journal of the Marine Biological Association of the United Kingdom volume 98, issue 3, page 627-633 ISSN 0025-3154 1469-7769 |
op_rights |
https://www.cambridge.org/core/terms |
op_doi |
https://doi.org/10.1017/s002531541600148x |
container_title |
Journal of the Marine Biological Association of the United Kingdom |
container_volume |
98 |
container_issue |
3 |
container_start_page |
627 |
op_container_end_page |
633 |
_version_ |
1792497190817497088 |