A marine zooplankton community vertically structured by light across diel to interannual timescales
The predation risk of many aquatic taxa is dominated by visually searching predators, commonly a function of ambient light. Several studies propose that changes in visual predation will become a major climate-change impact on polar marine ecosystems. The High Arctic experiences extreme seasonality i...
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The Royal Society
2021
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Online Access: | https://hdl.handle.net/10037/21670 https://doi.org/10.1098/rsbl.2020.0810 |
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ftunivtroemsoe:oai:munin.uit.no:10037/21670 2023-05-15T14:25:11+02:00 A marine zooplankton community vertically structured by light across diel to interannual timescales Hobbs, Laura Banas, Neil S. Cohen, Jonathan H. Cottier, Finlo Robert Berge, Jørgen Varpe, Øystein 2021-02-24 https://hdl.handle.net/10037/21670 https://doi.org/10.1098/rsbl.2020.0810 eng eng The Royal Society Biology Letters info:eu-repo/grantAgreement/RCN/POLARPROG/244319/Norway/Arctic Ocean ecosystems - Applied technology, Biological interactions and Consequences in an era of abrupt climate change// info:eu-repo/grantAgreement/RCN/KLIMAFORSK/300333/Norway/The impact of artificial light on arctic marine organisms and ecosystems during the polar night// info:eu-repo/grantAgreement/RCN/SFF/ 223254/Norway/Centre for Autonomous Marine Operations and Systems/AMOS/ Hobbs, Banas, Cohen, Cottier, Berge, Varpe. A marine zooplankton community vertically structured by light across diel to interannual timescales. Biology Letters. 2021;17(2) FRIDAID 1917670 doi:10.1098/rsbl.2020.0810 1744-9561 1744-957X https://hdl.handle.net/10037/21670 openAccess Copyright 2021 The Author(s) VDP::Mathematics and natural science: 400::Zoology and botany: 480 VDP::Matematikk og Naturvitenskap: 400::Zoologiske og botaniske fag: 480 Journal article Tidsskriftartikkel Peer reviewed publishedVersion 2021 ftunivtroemsoe https://doi.org/10.1098/rsbl.2020.0810 2021-07-07T22:52:38Z The predation risk of many aquatic taxa is dominated by visually searching predators, commonly a function of ambient light. Several studies propose that changes in visual predation will become a major climate-change impact on polar marine ecosystems. The High Arctic experiences extreme seasonality in the light environment, from 24 h light to 24 h darkness, and therefore provides a natural laboratory for studying light and predation risk over diel to seasonal timescales. Here, we show that zooplankton (observed using acoustics) in an Arctic fjord position themselves vertically in relation to light. A single isolume (depth-varying line of constant light intensity, the value of which is set at the lower limit of photobehaviour reponses of Calanus spp. and krill) forms a ceiling on zooplankton distribution. The vertical distribution is structured by light across timescales, from the deepening of zooplankton populations at midday as the sun rises in spring, to the depth to which zooplankton ascend to feed during diel vertical migration. These results suggest that zooplankton might already follow a foraging strategy that will keep visual predation risk roughly constant under changing light conditions, such as those caused by the reduction of sea ice, but likely with energetic costs such as lost feeding opportunities as a result of altered habitat use. Article in Journal/Newspaper Arctic Arctic Climate change Sea ice Zooplankton University of Tromsø: Munin Open Research Archive Arctic Biology Letters 17 2 |
institution |
Open Polar |
collection |
University of Tromsø: Munin Open Research Archive |
op_collection_id |
ftunivtroemsoe |
language |
English |
topic |
VDP::Mathematics and natural science: 400::Zoology and botany: 480 VDP::Matematikk og Naturvitenskap: 400::Zoologiske og botaniske fag: 480 |
spellingShingle |
VDP::Mathematics and natural science: 400::Zoology and botany: 480 VDP::Matematikk og Naturvitenskap: 400::Zoologiske og botaniske fag: 480 Hobbs, Laura Banas, Neil S. Cohen, Jonathan H. Cottier, Finlo Robert Berge, Jørgen Varpe, Øystein A marine zooplankton community vertically structured by light across diel to interannual timescales |
topic_facet |
VDP::Mathematics and natural science: 400::Zoology and botany: 480 VDP::Matematikk og Naturvitenskap: 400::Zoologiske og botaniske fag: 480 |
description |
The predation risk of many aquatic taxa is dominated by visually searching predators, commonly a function of ambient light. Several studies propose that changes in visual predation will become a major climate-change impact on polar marine ecosystems. The High Arctic experiences extreme seasonality in the light environment, from 24 h light to 24 h darkness, and therefore provides a natural laboratory for studying light and predation risk over diel to seasonal timescales. Here, we show that zooplankton (observed using acoustics) in an Arctic fjord position themselves vertically in relation to light. A single isolume (depth-varying line of constant light intensity, the value of which is set at the lower limit of photobehaviour reponses of Calanus spp. and krill) forms a ceiling on zooplankton distribution. The vertical distribution is structured by light across timescales, from the deepening of zooplankton populations at midday as the sun rises in spring, to the depth to which zooplankton ascend to feed during diel vertical migration. These results suggest that zooplankton might already follow a foraging strategy that will keep visual predation risk roughly constant under changing light conditions, such as those caused by the reduction of sea ice, but likely with energetic costs such as lost feeding opportunities as a result of altered habitat use. |
format |
Article in Journal/Newspaper |
author |
Hobbs, Laura Banas, Neil S. Cohen, Jonathan H. Cottier, Finlo Robert Berge, Jørgen Varpe, Øystein |
author_facet |
Hobbs, Laura Banas, Neil S. Cohen, Jonathan H. Cottier, Finlo Robert Berge, Jørgen Varpe, Øystein |
author_sort |
Hobbs, Laura |
title |
A marine zooplankton community vertically structured by light across diel to interannual timescales |
title_short |
A marine zooplankton community vertically structured by light across diel to interannual timescales |
title_full |
A marine zooplankton community vertically structured by light across diel to interannual timescales |
title_fullStr |
A marine zooplankton community vertically structured by light across diel to interannual timescales |
title_full_unstemmed |
A marine zooplankton community vertically structured by light across diel to interannual timescales |
title_sort |
marine zooplankton community vertically structured by light across diel to interannual timescales |
publisher |
The Royal Society |
publishDate |
2021 |
url |
https://hdl.handle.net/10037/21670 https://doi.org/10.1098/rsbl.2020.0810 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Arctic Climate change Sea ice Zooplankton |
genre_facet |
Arctic Arctic Climate change Sea ice Zooplankton |
op_relation |
Biology Letters info:eu-repo/grantAgreement/RCN/POLARPROG/244319/Norway/Arctic Ocean ecosystems - Applied technology, Biological interactions and Consequences in an era of abrupt climate change// info:eu-repo/grantAgreement/RCN/KLIMAFORSK/300333/Norway/The impact of artificial light on arctic marine organisms and ecosystems during the polar night// info:eu-repo/grantAgreement/RCN/SFF/ 223254/Norway/Centre for Autonomous Marine Operations and Systems/AMOS/ Hobbs, Banas, Cohen, Cottier, Berge, Varpe. A marine zooplankton community vertically structured by light across diel to interannual timescales. Biology Letters. 2021;17(2) FRIDAID 1917670 doi:10.1098/rsbl.2020.0810 1744-9561 1744-957X https://hdl.handle.net/10037/21670 |
op_rights |
openAccess Copyright 2021 The Author(s) |
op_doi |
https://doi.org/10.1098/rsbl.2020.0810 |
container_title |
Biology Letters |
container_volume |
17 |
container_issue |
2 |
_version_ |
1766297601781530624 |