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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Main Authors: Dominik Bahlburg, Lukas Hüppe, Thomas Böhrer, Sally E. Thorpe, Eugene J. Murphy, Uta Berger, Bettina Meyer
Format: Article in Journal/Newspaper
Language:unknown
Published: 2023
Subjects:
Online Access: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
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spelling 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
institution Open Polar
collection 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
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