Appendix Figures from Plasticity and seasonality of the vertical migration behaviour of Antarctic krill using acoustic data from fishing vessels
Understanding the vertical migration behaviour of Antarctic krill is important for understanding spatial distribution, ecophysiology, trophic interactions and carbon fluxes of this Southern Ocean key species. In this study, we analysed an eight-month continuous dataset recorded with an ES80-echosoun...
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ftroysocietyfig:oai:figshare.com:article/24147553 2023-10-09T21:45:22+02:00 Appendix Figures from Plasticity and seasonality of the vertical migration behaviour of Antarctic krill using acoustic data from fishing vessels Dominik Bahlburg Lukas Hüppe Thomas Böhrer Sally E. Thorpe Eugene J. Murphy Uta Berger Bettina Meyer 2023-09-15T14:10:09Z https://doi.org/10.6084/m9.figshare.24147553.v1 https://figshare.com/articles/journal_contribution/Appendix_Figures_from_Plasticity_and_seasonality_of_the_vertical_migration_behaviour_of_Antarctic_krill_using_acoustic_data_from_fishing_vessels/24147553 unknown doi:10.6084/m9.figshare.24147553.v1 https://figshare.com/articles/journal_contribution/Appendix_Figures_from_Plasticity_and_seasonality_of_the_vertical_migration_behaviour_of_Antarctic_krill_using_acoustic_data_from_fishing_vessels/24147553 CC BY 4.0 Environmental Science Ecology Animal Behaviour Antarctic krill vertical migration behaviour seasonal vertical migration Text Journal contribution 2023 ftroysocietyfig https://doi.org/10.6084/m9.figshare.24147553.v1 2023-09-20T23:10:27Z Understanding the vertical migration behaviour of Antarctic krill is important for understanding spatial distribution, ecophysiology, trophic interactions and carbon fluxes of this Southern Ocean key species. In this study, we analysed an eight-month continuous dataset recorded with an ES80-echosounder on board a commercial krill fishing vessel in the southwest Atlantic sector of the Southern Ocean. Our analysis supports the existing hypothesis that krill swarms migrate into deeper waters during winter but also reveals a high degree of variability in vertical migration behaviour within seasons, even at small spatial scales. During summer, we found that behaviour associated with prolonged surface presence primarily occurred at low surface chlorophyll a concentrations whereas multiple ascent-descent-cycles per day occurred when surface chlorophyll a concentrations, were elevated. The high plasticity, with some krill swarms behaving differently in the same location at the same time, suggests that krill behaviour is not a purely environmentally driven process. Differences in life stage, physiology and predator type are likely other important drivers. Finally, our study demonstrates new ways of using data from commercial krill fishing vessels, and with the routine collection of additional information in potential future projects, they have great potential to significantly advance our understanding of krill ecology. Article in Journal/Newspaper Antarc* Antarctic Antarctic Krill Southern Ocean The Royal Society: Figshare Antarctic Southern Ocean |
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Open Polar |
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The Royal Society: Figshare |
op_collection_id |
ftroysocietyfig |
language |
unknown |
topic |
Environmental Science Ecology Animal Behaviour Antarctic krill vertical migration behaviour seasonal vertical migration |
spellingShingle |
Environmental Science Ecology Animal Behaviour Antarctic krill vertical migration behaviour seasonal vertical migration Dominik Bahlburg Lukas Hüppe Thomas Böhrer Sally E. Thorpe Eugene J. Murphy Uta Berger Bettina Meyer Appendix Figures from Plasticity and seasonality of the vertical migration behaviour of Antarctic krill using acoustic data from fishing vessels |
topic_facet |
Environmental Science Ecology Animal Behaviour Antarctic krill vertical migration behaviour seasonal vertical migration |
description |
Understanding the vertical migration behaviour of Antarctic krill is important for understanding spatial distribution, ecophysiology, trophic interactions and carbon fluxes of this Southern Ocean key species. In this study, we analysed an eight-month continuous dataset recorded with an ES80-echosounder on board a commercial krill fishing vessel in the southwest Atlantic sector of the Southern Ocean. Our analysis supports the existing hypothesis that krill swarms migrate into deeper waters during winter but also reveals a high degree of variability in vertical migration behaviour within seasons, even at small spatial scales. During summer, we found that behaviour associated with prolonged surface presence primarily occurred at low surface chlorophyll a concentrations whereas multiple ascent-descent-cycles per day occurred when surface chlorophyll a concentrations, were elevated. The high plasticity, with some krill swarms behaving differently in the same location at the same time, suggests that krill behaviour is not a purely environmentally driven process. Differences in life stage, physiology and predator type are likely other important drivers. Finally, our study demonstrates new ways of using data from commercial krill fishing vessels, and with the routine collection of additional information in potential future projects, they have great potential to significantly advance our understanding of krill ecology. |
format |
Article in Journal/Newspaper |
author |
Dominik Bahlburg Lukas Hüppe Thomas Böhrer Sally E. Thorpe Eugene J. Murphy Uta Berger Bettina Meyer |
author_facet |
Dominik Bahlburg Lukas Hüppe Thomas Böhrer Sally E. Thorpe Eugene J. Murphy Uta Berger Bettina Meyer |
author_sort |
Dominik Bahlburg |
title |
Appendix Figures from Plasticity and seasonality of the vertical migration behaviour of Antarctic krill using acoustic data from fishing vessels |
title_short |
Appendix Figures from Plasticity and seasonality of the vertical migration behaviour of Antarctic krill using acoustic data from fishing vessels |
title_full |
Appendix Figures from Plasticity and seasonality of the vertical migration behaviour of Antarctic krill using acoustic data from fishing vessels |
title_fullStr |
Appendix Figures from Plasticity and seasonality of the vertical migration behaviour of Antarctic krill using acoustic data from fishing vessels |
title_full_unstemmed |
Appendix Figures from Plasticity and seasonality of the vertical migration behaviour of Antarctic krill using acoustic data from fishing vessels |
title_sort |
appendix figures from plasticity and seasonality of the vertical migration behaviour of antarctic krill using acoustic data from fishing vessels |
publishDate |
2023 |
url |
https://doi.org/10.6084/m9.figshare.24147553.v1 https://figshare.com/articles/journal_contribution/Appendix_Figures_from_Plasticity_and_seasonality_of_the_vertical_migration_behaviour_of_Antarctic_krill_using_acoustic_data_from_fishing_vessels/24147553 |
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_relation |
doi:10.6084/m9.figshare.24147553.v1 https://figshare.com/articles/journal_contribution/Appendix_Figures_from_Plasticity_and_seasonality_of_the_vertical_migration_behaviour_of_Antarctic_krill_using_acoustic_data_from_fishing_vessels/24147553 |
op_rights |
CC BY 4.0 |
op_doi |
https://doi.org/10.6084/m9.figshare.24147553.v1 |
_version_ |
1779317970132008960 |