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| Main Authors: | , , , , , , , , , , , , , , , , , , , , , , , , , , |
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| Format: | Dataset Open Access |
| Language: | en |
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PANGAEA
2017
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| Subjects: | |
| Online Access: | https://doi.org/10.1594/PANGAEA.864710 |
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| _version_ | 1867169513665986560 |
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| author | Meyer, Bettina Freier, Ulrich Grimm, Volker Groeneveld, Jürgen Hunt, Brian P V Kerwath, Sven King, Rob Klaas, Christine Pakhomov, Evgeny A Melbourne-Thomas, Jess Murphy, Eugene J Thorpe, Sally Stammerjohn, Sharon Wolf-Gladrow, Dieter A Auerswald, Lutz Götz, Albrecht Halbach, Laura Jarman, Simon Kawaguchi, So Krumpen, Thomas Meiners, Klaus M Nehrke, Gernot Ricker, Robert Summer, Michael Teschke, Mathias Trebilco, Rowan Yilmaz, Noyan |
| author_facet | Meyer, Bettina Freier, Ulrich Grimm, Volker Groeneveld, Jürgen Hunt, Brian P V Kerwath, Sven King, Rob Klaas, Christine Pakhomov, Evgeny A Melbourne-Thomas, Jess Murphy, Eugene J Thorpe, Sally Stammerjohn, Sharon Wolf-Gladrow, Dieter A Auerswald, Lutz Götz, Albrecht Halbach, Laura Jarman, Simon Kawaguchi, So Krumpen, Thomas Meiners, Klaus M Nehrke, Gernot Ricker, Robert Summer, Michael Teschke, Mathias Trebilco, Rowan Yilmaz, Noyan |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | A dominant Antarctic ecological paradigm suggests that winter sea ice is the feeding ground for krill larvae. However, several recent observations conflict with this hypothesis. Our study presents the first direct evidence that winter sea ice is actually a food-poor environment when compared to neighbouring open water regions. We found that complex under ice habitats are vital for larval krill, providing shelter from currents. During the day the larvae feed on the sparse ice-associated food but after sunset, they migrate into the water below the ice. This behaviour allows access to more food and promotes the dispersal of larvae to spring feeding grounds. Current larval krill overwintering and nursery habitats in the SW Atlantic are predicted to become ice-free in the future. This will lead to an enhanced food supply and faster larval development and growth but might increase the dispersal of larvae out of the SW Atlantic ecosystem. |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_864710 |
| institution | PANGAEA |
| language | en |
| publishDate | 2017 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | Less Antarctic sea ice may not mean fewer krill Meyer, Bettina Freier, Ulrich Grimm, Volker Groeneveld, Jürgen Hunt, Brian P V Kerwath, Sven King, Rob Klaas, Christine Pakhomov, Evgeny A Melbourne-Thomas, Jess Murphy, Eugene J Thorpe, Sally Stammerjohn, Sharon Wolf-Gladrow, Dieter A Auerswald, Lutz Götz, Albrecht Halbach, Laura Jarman, Simon Kawaguchi, So Krumpen, Thomas Meiners, Klaus M Nehrke, Gernot Ricker, Robert Summer, Michael Teschke, Mathias Trebilco, Rowan Yilmaz, Noyan A dominant Antarctic ecological paradigm suggests that winter sea ice is the feeding ground for krill larvae. However, several recent observations conflict with this hypothesis. Our study presents the first direct evidence that winter sea ice is actually a food-poor environment when compared to neighbouring open water regions. We found that complex under ice habitats are vital for larval krill, providing shelter from currents. During the day the larvae feed on the sparse ice-associated food but after sunset, they migrate into the water below the ice. This behaviour allows access to more food and promotes the dispersal of larvae to spring feeding grounds. Current larval krill overwintering and nursery habitats in the SW Atlantic are predicted to become ice-free in the future. This will lead to an enhanced food supply and faster larval development and growth but might increase the dispersal of larvae out of the SW Atlantic ecosystem. |
| title | Less Antarctic sea ice may not mean fewer krill |
| topic | |
| url | https://doi.org/10.1594/PANGAEA.864710 |