The contribution of ice algae to the winter energy budget of juvenile Antarctic krill in years with contrasting sea ice conditions
Abstract Krill overwintering strategies vary with ontogeny and year; understanding this variability is essential to predicting how the species will respond to climate change in the future. Overwintering studies have focused on larval and adult krill, but we know little about how juvenile krill overw...
Published in: | ICES Journal of Marine Science |
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2018
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Online Access: | http://dx.doi.org/10.1093/icesjms/fsy145 http://academic.oup.com/icesjms/article-pdf/76/1/206/31238323/fsy145.pdf |
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croxfordunivpr:10.1093/icesjms/fsy145 2024-09-15T17:44:15+00:00 The contribution of ice algae to the winter energy budget of juvenile Antarctic krill in years with contrasting sea ice conditions Bernard, Kim S Gunther, Lacey A Mahaffey, Sean H Qualls, Katelyn M Sugla, Monisha Saenz, Benjamin T Cossio, Anthony M Walsh, Jennifer Reiss, Christian S Fields, David G. Unger Vetlesen Foundation 2018 http://dx.doi.org/10.1093/icesjms/fsy145 http://academic.oup.com/icesjms/article-pdf/76/1/206/31238323/fsy145.pdf en eng Oxford University Press (OUP) https://academic.oup.com/journals/pages/open_access/funder_policies/chorus/standard_publication_model ICES Journal of Marine Science volume 76, issue 1, page 206-216 ISSN 1054-3139 1095-9289 journal-article 2018 croxfordunivpr https://doi.org/10.1093/icesjms/fsy145 2024-07-29T04:22:32Z Abstract Krill overwintering strategies vary with ontogeny and year; understanding this variability is essential to predicting how the species will respond to climate change in the future. Overwintering studies have focused on larval and adult krill, but we know little about how juvenile krill overwinter. The late winter diet of juvenile krill is important because it will determine their growth and development rates and consequently their reproductive potential the following spring. A diet rich in ice algae would promote growth and reproductive development. The Bransfield Strait (northern Antarctic Peninsula, AP) is an important overwintering ground for krill; it has been proposed this region offers a food-rich winter environment. We examined the contribution of ice algae to the energy budget of overwintering juvenile krill during 2 years with contrasting sea ice conditions. Grazing on ice algae contributed ∼146% to their winter energy budget in 2015, even though ice concentrations were ≤50% and consisted of newly formed pancake ice. However, when sea ice advanced late in the Bransfield Strait (2016), ice algae contributed significantly less (∼16%) to the winter energy budget of juvenile krill. Delayed sea ice advance may negatively affect growth and reproductive development of overwintering juvenile krill. Article in Journal/Newspaper Antarc* Antarctic Antarctic Krill Antarctic Peninsula Bransfield Strait ice algae Sea ice Oxford University Press ICES Journal of Marine Science 76 1 206 216 |
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Open Polar |
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Oxford University Press |
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croxfordunivpr |
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English |
description |
Abstract Krill overwintering strategies vary with ontogeny and year; understanding this variability is essential to predicting how the species will respond to climate change in the future. Overwintering studies have focused on larval and adult krill, but we know little about how juvenile krill overwinter. The late winter diet of juvenile krill is important because it will determine their growth and development rates and consequently their reproductive potential the following spring. A diet rich in ice algae would promote growth and reproductive development. The Bransfield Strait (northern Antarctic Peninsula, AP) is an important overwintering ground for krill; it has been proposed this region offers a food-rich winter environment. We examined the contribution of ice algae to the energy budget of overwintering juvenile krill during 2 years with contrasting sea ice conditions. Grazing on ice algae contributed ∼146% to their winter energy budget in 2015, even though ice concentrations were ≤50% and consisted of newly formed pancake ice. However, when sea ice advanced late in the Bransfield Strait (2016), ice algae contributed significantly less (∼16%) to the winter energy budget of juvenile krill. Delayed sea ice advance may negatively affect growth and reproductive development of overwintering juvenile krill. |
author2 |
Fields, David G. Unger Vetlesen Foundation |
format |
Article in Journal/Newspaper |
author |
Bernard, Kim S Gunther, Lacey A Mahaffey, Sean H Qualls, Katelyn M Sugla, Monisha Saenz, Benjamin T Cossio, Anthony M Walsh, Jennifer Reiss, Christian S |
spellingShingle |
Bernard, Kim S Gunther, Lacey A Mahaffey, Sean H Qualls, Katelyn M Sugla, Monisha Saenz, Benjamin T Cossio, Anthony M Walsh, Jennifer Reiss, Christian S The contribution of ice algae to the winter energy budget of juvenile Antarctic krill in years with contrasting sea ice conditions |
author_facet |
Bernard, Kim S Gunther, Lacey A Mahaffey, Sean H Qualls, Katelyn M Sugla, Monisha Saenz, Benjamin T Cossio, Anthony M Walsh, Jennifer Reiss, Christian S |
author_sort |
Bernard, Kim S |
title |
The contribution of ice algae to the winter energy budget of juvenile Antarctic krill in years with contrasting sea ice conditions |
title_short |
The contribution of ice algae to the winter energy budget of juvenile Antarctic krill in years with contrasting sea ice conditions |
title_full |
The contribution of ice algae to the winter energy budget of juvenile Antarctic krill in years with contrasting sea ice conditions |
title_fullStr |
The contribution of ice algae to the winter energy budget of juvenile Antarctic krill in years with contrasting sea ice conditions |
title_full_unstemmed |
The contribution of ice algae to the winter energy budget of juvenile Antarctic krill in years with contrasting sea ice conditions |
title_sort |
contribution of ice algae to the winter energy budget of juvenile antarctic krill in years with contrasting sea ice conditions |
publisher |
Oxford University Press (OUP) |
publishDate |
2018 |
url |
http://dx.doi.org/10.1093/icesjms/fsy145 http://academic.oup.com/icesjms/article-pdf/76/1/206/31238323/fsy145.pdf |
genre |
Antarc* Antarctic Antarctic Krill Antarctic Peninsula Bransfield Strait ice algae Sea ice |
genre_facet |
Antarc* Antarctic Antarctic Krill Antarctic Peninsula Bransfield Strait ice algae Sea ice |
op_source |
ICES Journal of Marine Science volume 76, issue 1, page 206-216 ISSN 1054-3139 1095-9289 |
op_rights |
https://academic.oup.com/journals/pages/open_access/funder_policies/chorus/standard_publication_model |
op_doi |
https://doi.org/10.1093/icesjms/fsy145 |
container_title |
ICES Journal of Marine Science |
container_volume |
76 |
container_issue |
1 |
container_start_page |
206 |
op_container_end_page |
216 |
_version_ |
1810491675482521600 |