The winter pack-ice zone provides a sheltered but food-poor habitat for larval Antarctic krill
© 2017 The Author(s). A dominant Antarctic ecological paradigm suggests that winter sea ice is generally the main feeding ground for krill larvae. Observations from our winter cruise to the southwest Atlantic sector of the Southern Ocean contradict this view and present the first evidence that the p...
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Online Access: | https://hdl.handle.net/20.500.11937/71281 https://doi.org/10.1038/s41559-017-0368-3 |
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ftcurtin:oai:espace.curtin.edu.au:20.500.11937/71281 2023-06-11T04:05:44+02:00 The winter pack-ice zone provides a sheltered but food-poor habitat for larval Antarctic krill Meyer, B. Freier, U. Grimm, V. Groeneveld, J. Hunt, B. Kerwath, S. King, R. Klaas, C. Pakhomov, E. Meiners, K. Melbourne-Thomas, J. Murphy, E. Thorpe, S. Stammerjohn, S. Wolf-Gladrow, D. Auerswald, L. Götz, A. Halbach, L. Jarman, Simon Kawaguchi, S. Krumpen, T. Nehrke, G. Ricker, R. Sumner, M. Teschke, M. Trebilco, R. Yilmaz, N. 2017 restricted https://hdl.handle.net/20.500.11937/71281 https://doi.org/10.1038/s41559-017-0368-3 unknown http://hdl.handle.net/20.500.11937/71281 doi:10.1038/s41559-017-0368-3 Journal Article 2017 ftcurtin https://doi.org/20.500.11937/7128110.1038/s41559-017-0368-3 2023-05-30T19:54:23Z © 2017 The Author(s). A dominant Antarctic ecological paradigm suggests that winter sea ice is generally the main feeding ground for krill larvae. Observations from our winter cruise to the southwest Atlantic sector of the Southern Ocean contradict this view and present the first evidence that the pack-ice zone is a food-poor habitat for larval development. In contrast, the more open marginal ice zone provides a more favourable food environment for high larval krill growth rates. We found that complex under-ice habitats are, however, vital for larval krill when water column productivity is limited by light, by providing structures that offer protection from predators and to collect organic material released from the ice. The larvae feed on this sparse ice-associated food during the day. After sunset, they migrate into the water below the ice (upper 20 m) and drift away from the ice areas where they have previously fed. Model analyses indicate that this behaviour increases both food uptake in a patchy food environment and the likelihood of overwinter transport to areas where feeding conditions are more favourable in spring. Article in Journal/Newspaper Antarc* Antarctic Antarctic Krill Sea ice Southern Ocean Curtin University: espace Antarctic Southern Ocean Nature Ecology & Evolution 1 12 1853 1861 |
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Curtin University: espace |
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© 2017 The Author(s). A dominant Antarctic ecological paradigm suggests that winter sea ice is generally the main feeding ground for krill larvae. Observations from our winter cruise to the southwest Atlantic sector of the Southern Ocean contradict this view and present the first evidence that the pack-ice zone is a food-poor habitat for larval development. In contrast, the more open marginal ice zone provides a more favourable food environment for high larval krill growth rates. We found that complex under-ice habitats are, however, vital for larval krill when water column productivity is limited by light, by providing structures that offer protection from predators and to collect organic material released from the ice. The larvae feed on this sparse ice-associated food during the day. After sunset, they migrate into the water below the ice (upper 20 m) and drift away from the ice areas where they have previously fed. Model analyses indicate that this behaviour increases both food uptake in a patchy food environment and the likelihood of overwinter transport to areas where feeding conditions are more favourable in spring. |
format |
Article in Journal/Newspaper |
author |
Meyer, B. Freier, U. Grimm, V. Groeneveld, J. Hunt, B. Kerwath, S. King, R. Klaas, C. Pakhomov, E. Meiners, K. Melbourne-Thomas, J. Murphy, E. Thorpe, S. Stammerjohn, S. Wolf-Gladrow, D. Auerswald, L. Götz, A. Halbach, L. Jarman, Simon Kawaguchi, S. Krumpen, T. Nehrke, G. Ricker, R. Sumner, M. Teschke, M. Trebilco, R. Yilmaz, N. |
spellingShingle |
Meyer, B. Freier, U. Grimm, V. Groeneveld, J. Hunt, B. Kerwath, S. King, R. Klaas, C. Pakhomov, E. Meiners, K. Melbourne-Thomas, J. Murphy, E. Thorpe, S. Stammerjohn, S. Wolf-Gladrow, D. Auerswald, L. Götz, A. Halbach, L. Jarman, Simon Kawaguchi, S. Krumpen, T. Nehrke, G. Ricker, R. Sumner, M. Teschke, M. Trebilco, R. Yilmaz, N. The winter pack-ice zone provides a sheltered but food-poor habitat for larval Antarctic krill |
author_facet |
Meyer, B. Freier, U. Grimm, V. Groeneveld, J. Hunt, B. Kerwath, S. King, R. Klaas, C. Pakhomov, E. Meiners, K. Melbourne-Thomas, J. Murphy, E. Thorpe, S. Stammerjohn, S. Wolf-Gladrow, D. Auerswald, L. Götz, A. Halbach, L. Jarman, Simon Kawaguchi, S. Krumpen, T. Nehrke, G. Ricker, R. Sumner, M. Teschke, M. Trebilco, R. Yilmaz, N. |
author_sort |
Meyer, B. |
title |
The winter pack-ice zone provides a sheltered but food-poor habitat for larval Antarctic krill |
title_short |
The winter pack-ice zone provides a sheltered but food-poor habitat for larval Antarctic krill |
title_full |
The winter pack-ice zone provides a sheltered but food-poor habitat for larval Antarctic krill |
title_fullStr |
The winter pack-ice zone provides a sheltered but food-poor habitat for larval Antarctic krill |
title_full_unstemmed |
The winter pack-ice zone provides a sheltered but food-poor habitat for larval Antarctic krill |
title_sort |
winter pack-ice zone provides a sheltered but food-poor habitat for larval antarctic krill |
publishDate |
2017 |
url |
https://hdl.handle.net/20.500.11937/71281 https://doi.org/10.1038/s41559-017-0368-3 |
geographic |
Antarctic Southern Ocean |
geographic_facet |
Antarctic Southern Ocean |
genre |
Antarc* Antarctic Antarctic Krill Sea ice Southern Ocean |
genre_facet |
Antarc* Antarctic Antarctic Krill Sea ice Southern Ocean |
op_relation |
http://hdl.handle.net/20.500.11937/71281 doi:10.1038/s41559-017-0368-3 |
op_doi |
https://doi.org/20.500.11937/7128110.1038/s41559-017-0368-3 |
container_title |
Nature Ecology & Evolution |
container_volume |
1 |
container_issue |
12 |
container_start_page |
1853 |
op_container_end_page |
1861 |
_version_ |
1768377343847432192 |