Seasonal variability in non-consumptive mortality of Arctic zooplankton
Recent observations from high-latitude marine ecosystems indicate that non-consumptive mortality may be particularly high in Arctic zooplankton during the polar night. Here we have estimated the contribution of dead organisms to the mesozooplankton community in the high Arctic (Svalbard 78–81oN) dur...
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Oxford University Press
2021
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Online Access: | https://hdl.handle.net/10037/23494 https://doi.org/10.1093/plankt/fbab042 |
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ftunivtroemsoe:oai:munin.uit.no:10037/23494 2023-05-15T14:22:28+02:00 Seasonal variability in non-consumptive mortality of Arctic zooplankton Daase, Malin Søreide, Janne E. 2021-06-04 https://hdl.handle.net/10037/23494 https://doi.org/10.1093/plankt/fbab042 eng eng Oxford University Press Journal of Plankton Research 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// Daase, Søreide. Seasonal variability in non-consumptive mortality of Arctic zooplankton. Journal of Plankton Research. 2021;43(4):565-585 FRIDAID 1928134 doi:10.1093/plankt/fbab042 0142-7873 1464-3774 https://hdl.handle.net/10037/23494 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/10.1093/plankt/fbab042 2021-12-29T23:55:45Z Recent observations from high-latitude marine ecosystems indicate that non-consumptive mortality may be particularly high in Arctic zooplankton during the polar night. Here we have estimated the contribution of dead organisms to the mesozooplankton community in the high Arctic (Svalbard 78–81oN) during the polar night (January), in spring (May) and in late summer (end of August). To identify in situ dead organisms, we used Neutral Red Stain. The dead zooplankton fraction consisted mainly of copepods, while the contribution of dead non-copepods was low in all seasons. The absolute abundance of dead copepods varied little between seasons; however, the relative contribution of dead copepods was highest in January with 11–35% of the copepods classified as dead, in contrast to 2–12% in spring and summer. Furthermore, there were species-specific differences: copepods of the genus Calanus contributed more to the dead fraction of the copepod community during the polar night compared to spring and summer, leading to a higher “dead” biomass in winter. We conclude that non-consumptive winter mortality is considerable in calanoid copepods in the Arctic and an important but so far neglected component of the passive carbon flux, providing carbon in larger portions for higher trophic level consumers during the low-productive winter. Article in Journal/Newspaper Arctic Arctic Mesozooplankton polar night Svalbard Zooplankton Copepods University of Tromsø: Munin Open Research Archive Arctic Svalbard Journal of Plankton Research 43 4 565 585 |
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 Daase, Malin Søreide, Janne E. Seasonal variability in non-consumptive mortality of Arctic zooplankton |
topic_facet |
VDP::Mathematics and natural science: 400::Zoology and botany: 480 VDP::Matematikk og Naturvitenskap: 400::Zoologiske og botaniske fag: 480 |
description |
Recent observations from high-latitude marine ecosystems indicate that non-consumptive mortality may be particularly high in Arctic zooplankton during the polar night. Here we have estimated the contribution of dead organisms to the mesozooplankton community in the high Arctic (Svalbard 78–81oN) during the polar night (January), in spring (May) and in late summer (end of August). To identify in situ dead organisms, we used Neutral Red Stain. The dead zooplankton fraction consisted mainly of copepods, while the contribution of dead non-copepods was low in all seasons. The absolute abundance of dead copepods varied little between seasons; however, the relative contribution of dead copepods was highest in January with 11–35% of the copepods classified as dead, in contrast to 2–12% in spring and summer. Furthermore, there were species-specific differences: copepods of the genus Calanus contributed more to the dead fraction of the copepod community during the polar night compared to spring and summer, leading to a higher “dead” biomass in winter. We conclude that non-consumptive winter mortality is considerable in calanoid copepods in the Arctic and an important but so far neglected component of the passive carbon flux, providing carbon in larger portions for higher trophic level consumers during the low-productive winter. |
format |
Article in Journal/Newspaper |
author |
Daase, Malin Søreide, Janne E. |
author_facet |
Daase, Malin Søreide, Janne E. |
author_sort |
Daase, Malin |
title |
Seasonal variability in non-consumptive mortality of Arctic zooplankton |
title_short |
Seasonal variability in non-consumptive mortality of Arctic zooplankton |
title_full |
Seasonal variability in non-consumptive mortality of Arctic zooplankton |
title_fullStr |
Seasonal variability in non-consumptive mortality of Arctic zooplankton |
title_full_unstemmed |
Seasonal variability in non-consumptive mortality of Arctic zooplankton |
title_sort |
seasonal variability in non-consumptive mortality of arctic zooplankton |
publisher |
Oxford University Press |
publishDate |
2021 |
url |
https://hdl.handle.net/10037/23494 https://doi.org/10.1093/plankt/fbab042 |
geographic |
Arctic Svalbard |
geographic_facet |
Arctic Svalbard |
genre |
Arctic Arctic Mesozooplankton polar night Svalbard Zooplankton Copepods |
genre_facet |
Arctic Arctic Mesozooplankton polar night Svalbard Zooplankton Copepods |
op_relation |
Journal of Plankton Research 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// Daase, Søreide. Seasonal variability in non-consumptive mortality of Arctic zooplankton. Journal of Plankton Research. 2021;43(4):565-585 FRIDAID 1928134 doi:10.1093/plankt/fbab042 0142-7873 1464-3774 https://hdl.handle.net/10037/23494 |
op_rights |
openAccess Copyright 2021 The Author(s) |
op_doi |
https://doi.org/10.1093/plankt/fbab042 |
container_title |
Journal of Plankton Research |
container_volume |
43 |
container_issue |
4 |
container_start_page |
565 |
op_container_end_page |
585 |
_version_ |
1766295050425204736 |