Coupled changes between the H‐Print biomarker and δ 15 N indicates a variable sea ice carbon contribution to the diet of Cumberland Sound beluga whales
Abstract Sub‐Arctic habitats are being exposed to increasingly long periods of open water as sea ice continues to decline in thickness and extent. Some hypothesize that this will result in a reduction, and maybe total loss of sea ice derived (sympagic) carbon supply; however, the impact of such chan...
Published in: | Limnology and Oceanography |
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Online Access: | http://dx.doi.org/10.1002/lno.10520 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Flno.10520 https://onlinelibrary.wiley.com/doi/pdf/10.1002/lno.10520 https://onlinelibrary.wiley.com/doi/full-xml/10.1002/lno.10520 https://aslopubs.onlinelibrary.wiley.com/doi/pdf/10.1002/lno.10520 |
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crwiley:10.1002/lno.10520 2024-09-15T17:58:59+00:00 Coupled changes between the H‐Print biomarker and δ 15 N indicates a variable sea ice carbon contribution to the diet of Cumberland Sound beluga whales Brown, T. A. Chrystal, E. Ferguson, S. H. Yurkowski, D. J. Watt, C. Hussey, N. E. Kelley, T. C. Belt, S. T. Leverhulme Trust 2017 http://dx.doi.org/10.1002/lno.10520 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Flno.10520 https://onlinelibrary.wiley.com/doi/pdf/10.1002/lno.10520 https://onlinelibrary.wiley.com/doi/full-xml/10.1002/lno.10520 https://aslopubs.onlinelibrary.wiley.com/doi/pdf/10.1002/lno.10520 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Limnology and Oceanography volume 62, issue 4, page 1606-1619 ISSN 0024-3590 1939-5590 journal-article 2017 crwiley https://doi.org/10.1002/lno.10520 2024-08-09T04:24:53Z Abstract Sub‐Arctic habitats are being exposed to increasingly long periods of open water as sea ice continues to decline in thickness and extent. Some hypothesize that this will result in a reduction, and maybe total loss of sea ice derived (sympagic) carbon supply; however, the impact of such change on ecosystems requires further investigation. Here, we used the H‐Print biomarker approach that utilizes well‐defined indicators of both sympagic and phytoplanktic carbon, in combination with stable isotopes (δ 15 N), to study the effect of reducing sympagic carbon availability on beluga whales ( Delphinapterus leucas ) in the sub‐Arctic ecosystem of Cumberland Sound. Our data show that decreasing δ 15 N in belugas was negatively correlated with pelagic carbon (H‐Print) within their diet. We also identified a statistically significant ( R 2 = 0.82; p ≤ 0.01) change point in the proportion of sympagic/pelagic carbon within beluga around the year 2000, signified by consistently reducing δ 15 N, coupled with increasing pelagic carbon composition. This observed shift from sympagic to pelagic contribution to diet is likely to remain a feature of the Cumberland Sound ecosystem during the projected reduction of sea ice. Article in Journal/Newspaper Beluga Beluga* Cumberland Sound Delphinapterus leucas Sea ice Wiley Online Library Limnology and Oceanography 62 4 1606 1619 |
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Wiley Online Library |
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crwiley |
language |
English |
description |
Abstract Sub‐Arctic habitats are being exposed to increasingly long periods of open water as sea ice continues to decline in thickness and extent. Some hypothesize that this will result in a reduction, and maybe total loss of sea ice derived (sympagic) carbon supply; however, the impact of such change on ecosystems requires further investigation. Here, we used the H‐Print biomarker approach that utilizes well‐defined indicators of both sympagic and phytoplanktic carbon, in combination with stable isotopes (δ 15 N), to study the effect of reducing sympagic carbon availability on beluga whales ( Delphinapterus leucas ) in the sub‐Arctic ecosystem of Cumberland Sound. Our data show that decreasing δ 15 N in belugas was negatively correlated with pelagic carbon (H‐Print) within their diet. We also identified a statistically significant ( R 2 = 0.82; p ≤ 0.01) change point in the proportion of sympagic/pelagic carbon within beluga around the year 2000, signified by consistently reducing δ 15 N, coupled with increasing pelagic carbon composition. This observed shift from sympagic to pelagic contribution to diet is likely to remain a feature of the Cumberland Sound ecosystem during the projected reduction of sea ice. |
author2 |
Leverhulme Trust |
format |
Article in Journal/Newspaper |
author |
Brown, T. A. Chrystal, E. Ferguson, S. H. Yurkowski, D. J. Watt, C. Hussey, N. E. Kelley, T. C. Belt, S. T. |
spellingShingle |
Brown, T. A. Chrystal, E. Ferguson, S. H. Yurkowski, D. J. Watt, C. Hussey, N. E. Kelley, T. C. Belt, S. T. Coupled changes between the H‐Print biomarker and δ 15 N indicates a variable sea ice carbon contribution to the diet of Cumberland Sound beluga whales |
author_facet |
Brown, T. A. Chrystal, E. Ferguson, S. H. Yurkowski, D. J. Watt, C. Hussey, N. E. Kelley, T. C. Belt, S. T. |
author_sort |
Brown, T. A. |
title |
Coupled changes between the H‐Print biomarker and δ 15 N indicates a variable sea ice carbon contribution to the diet of Cumberland Sound beluga whales |
title_short |
Coupled changes between the H‐Print biomarker and δ 15 N indicates a variable sea ice carbon contribution to the diet of Cumberland Sound beluga whales |
title_full |
Coupled changes between the H‐Print biomarker and δ 15 N indicates a variable sea ice carbon contribution to the diet of Cumberland Sound beluga whales |
title_fullStr |
Coupled changes between the H‐Print biomarker and δ 15 N indicates a variable sea ice carbon contribution to the diet of Cumberland Sound beluga whales |
title_full_unstemmed |
Coupled changes between the H‐Print biomarker and δ 15 N indicates a variable sea ice carbon contribution to the diet of Cumberland Sound beluga whales |
title_sort |
coupled changes between the h‐print biomarker and δ 15 n indicates a variable sea ice carbon contribution to the diet of cumberland sound beluga whales |
publisher |
Wiley |
publishDate |
2017 |
url |
http://dx.doi.org/10.1002/lno.10520 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Flno.10520 https://onlinelibrary.wiley.com/doi/pdf/10.1002/lno.10520 https://onlinelibrary.wiley.com/doi/full-xml/10.1002/lno.10520 https://aslopubs.onlinelibrary.wiley.com/doi/pdf/10.1002/lno.10520 |
genre |
Beluga Beluga* Cumberland Sound Delphinapterus leucas Sea ice |
genre_facet |
Beluga Beluga* Cumberland Sound Delphinapterus leucas Sea ice |
op_source |
Limnology and Oceanography volume 62, issue 4, page 1606-1619 ISSN 0024-3590 1939-5590 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1002/lno.10520 |
container_title |
Limnology and Oceanography |
container_volume |
62 |
container_issue |
4 |
container_start_page |
1606 |
op_container_end_page |
1619 |
_version_ |
1810435930480181248 |