Driving forces of Antarctic krill abundance
Antarctic krill, crucial to the Southern Ocean ecosystem and a vital fisheries resource, is endangered by climate change. Identifying drivers of krill biomass is therefore essential for determining catch limits and designating protection zones. We present a modeling approach to pinpointing effects o...
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American Association for the Advancement of Science (AAAS)
2023
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Online Access: | https://epic.awi.de/id/eprint/58179/ https://epic.awi.de/id/eprint/58179/1/2023,%20Ryabov%20et%20al%202023.pdf https://doi.org/10.1126/sciadv.adh4584 https://hdl.handle.net/10013/epic.1fbf5d58-9ca4-4d76-a700-83c5e0a4f929 |
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ftawi:oai:epic.awi.de:58179 2024-01-21T09:59:33+01:00 Driving forces of Antarctic krill abundance Ryabov, Alexey Berger, Uta Blasius, Bernd Meyer, Bettina 2023-12-15 application/pdf https://epic.awi.de/id/eprint/58179/ https://epic.awi.de/id/eprint/58179/1/2023,%20Ryabov%20et%20al%202023.pdf https://doi.org/10.1126/sciadv.adh4584 https://hdl.handle.net/10013/epic.1fbf5d58-9ca4-4d76-a700-83c5e0a4f929 unknown American Association for the Advancement of Science (AAAS) https://epic.awi.de/id/eprint/58179/1/2023,%20Ryabov%20et%20al%202023.pdf Ryabov, A. , Berger, U. , Blasius, B. and Meyer, B. orcid:0000-0001-6804-9896 (2023) Driving forces of Antarctic krill abundance , Science Advances, 9 (50) . doi:10.1126/sciadv.adh4584 <https://doi.org/10.1126/sciadv.adh4584> , hdl:10013/epic.1fbf5d58-9ca4-4d76-a700-83c5e0a4f929 EPIC3Science Advances, American Association for the Advancement of Science (AAAS), 9(50), ISSN: 2375-2548 Article isiRev 2023 ftawi https://doi.org/10.1126/sciadv.adh4584 2023-12-25T00:23:13Z Antarctic krill, crucial to the Southern Ocean ecosystem and a vital fisheries resource, is endangered by climate change. Identifying drivers of krill biomass is therefore essential for determining catch limits and designating protection zones. We present a modeling approach to pinpointing effects of sea surface temperature, ice cover, chlorophyll levels, climate indices, and intraspecific competition. Our study reveals that larval recruitment is driven by both competition among age classes and chlorophyll levels. In addition, while milder ice and temperature in spring and summer favor reproduction and early larval survival, both larvae and juveniles strongly benefit from heavier ice and colder temperatures in winter. We conclude that omitting top-down control of resources by krill is only acceptable for retrospective or single-year prognostic models that use field chlorophyll data but that incorporating intraspecific competition is essential for longer-term forecasts. Our findings can guide future krill modeling strategies, reinforcing the sustainability of this keystone species. Article in Journal/Newspaper Antarc* Antarctic Antarctic Krill Southern Ocean Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) Antarctic Southern Ocean Science Advances 9 50 |
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Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) |
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ftawi |
language |
unknown |
description |
Antarctic krill, crucial to the Southern Ocean ecosystem and a vital fisheries resource, is endangered by climate change. Identifying drivers of krill biomass is therefore essential for determining catch limits and designating protection zones. We present a modeling approach to pinpointing effects of sea surface temperature, ice cover, chlorophyll levels, climate indices, and intraspecific competition. Our study reveals that larval recruitment is driven by both competition among age classes and chlorophyll levels. In addition, while milder ice and temperature in spring and summer favor reproduction and early larval survival, both larvae and juveniles strongly benefit from heavier ice and colder temperatures in winter. We conclude that omitting top-down control of resources by krill is only acceptable for retrospective or single-year prognostic models that use field chlorophyll data but that incorporating intraspecific competition is essential for longer-term forecasts. Our findings can guide future krill modeling strategies, reinforcing the sustainability of this keystone species. |
format |
Article in Journal/Newspaper |
author |
Ryabov, Alexey Berger, Uta Blasius, Bernd Meyer, Bettina |
spellingShingle |
Ryabov, Alexey Berger, Uta Blasius, Bernd Meyer, Bettina Driving forces of Antarctic krill abundance |
author_facet |
Ryabov, Alexey Berger, Uta Blasius, Bernd Meyer, Bettina |
author_sort |
Ryabov, Alexey |
title |
Driving forces of Antarctic krill abundance |
title_short |
Driving forces of Antarctic krill abundance |
title_full |
Driving forces of Antarctic krill abundance |
title_fullStr |
Driving forces of Antarctic krill abundance |
title_full_unstemmed |
Driving forces of Antarctic krill abundance |
title_sort |
driving forces of antarctic krill abundance |
publisher |
American Association for the Advancement of Science (AAAS) |
publishDate |
2023 |
url |
https://epic.awi.de/id/eprint/58179/ https://epic.awi.de/id/eprint/58179/1/2023,%20Ryabov%20et%20al%202023.pdf https://doi.org/10.1126/sciadv.adh4584 https://hdl.handle.net/10013/epic.1fbf5d58-9ca4-4d76-a700-83c5e0a4f929 |
geographic |
Antarctic Southern Ocean |
geographic_facet |
Antarctic Southern Ocean |
genre |
Antarc* Antarctic Antarctic Krill Southern Ocean |
genre_facet |
Antarc* Antarctic Antarctic Krill Southern Ocean |
op_source |
EPIC3Science Advances, American Association for the Advancement of Science (AAAS), 9(50), ISSN: 2375-2548 |
op_relation |
https://epic.awi.de/id/eprint/58179/1/2023,%20Ryabov%20et%20al%202023.pdf Ryabov, A. , Berger, U. , Blasius, B. and Meyer, B. orcid:0000-0001-6804-9896 (2023) Driving forces of Antarctic krill abundance , Science Advances, 9 (50) . doi:10.1126/sciadv.adh4584 <https://doi.org/10.1126/sciadv.adh4584> , hdl:10013/epic.1fbf5d58-9ca4-4d76-a700-83c5e0a4f929 |
op_doi |
https://doi.org/10.1126/sciadv.adh4584 |
container_title |
Science Advances |
container_volume |
9 |
container_issue |
50 |
_version_ |
1788696728898109440 |