Pelagic occurrences of the ice amphipod Apherusa glacialis throughout the Arctic
Apherusa glacialis is a common, sea ice-associated amphipod found throughout the Arctic Ocean and has long been considered permanently associated with the sea ice habitat. However, pelagic occurrences of A. glacialis have also been reported. It was recently suggested that A. glacialis overwinters at...
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Online Access: | http://hdl.handle.net/11250/2639559 https://doi.org/10.1093/plankt/fbz072 |
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ftntnutrondheimi:oai:ntnuopen.ntnu.no:11250/2639559 2023-05-15T14:51:08+02:00 Pelagic occurrences of the ice amphipod Apherusa glacialis throughout the Arctic Kunisch, Erin Bluhm, Bodil Daase, Malin Gradinger, Rolf Hop, Haakon Melnikov, Igor A. Øystein, Varpe Berge, Jørgen 2020 http://hdl.handle.net/11250/2639559 https://doi.org/10.1093/plankt/fbz072 eng eng Journal of Plankton Research. 2020, 42 (1), 73-86. urn:issn:0142-7873 http://hdl.handle.net/11250/2639559 https://doi.org/10.1093/plankt/fbz072 cristin:1790224 Navngivelse 4.0 Internasjonal http://creativecommons.org/licenses/by/4.0/deed.no CC-BY 73-86 42 Journal of Plankton Research 1 Journal article Peer reviewed 2020 ftntnutrondheimi https://doi.org/10.1093/plankt/fbz072 2020-02-05T23:32:31Z Apherusa glacialis is a common, sea ice-associated amphipod found throughout the Arctic Ocean and has long been considered permanently associated with the sea ice habitat. However, pelagic occurrences of A. glacialis have also been reported. It was recently suggested that A. glacialis overwinters at depth within the Atlantic-water inflow near Svalbard, to avoid being exported out of the Arctic Ocean through the Fram Strait. This study collated pelagic occurrence records over a 71-year period and found that A. glacialis was consistently found away from its presumed sea ice habitat on a pan-Arctic scale, in different depths and water masses. In the Svalbard region, A. glacialis was found in Atlantic Water both in winter and summer. Additionally, we analyzed A. glacialis size distributions throughout the year, collected mostly from sea ice, in order to elucidate potential life cycle strategies. The majority of young-of-the-year A. glacialis was found in the sea ice habitat during spring, supporting previous findings. Data on size distributions and sex ratios suggest a semelparous lifestyle. A synchronous seasonal vertical migration was not evident, but our data imply a more complex life history than previously assumed. We provide evidence that A. glacialis can no longer be regarded as an autochthonous sympagic species. publishedVersion © The Author(s) 2020. Published by Oxford University Press. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted reuse, distribution, and reproduction in any medium, provided the original work is properly cited. Article in Journal/Newspaper Arctic Arctic Ocean Fram Strait Sea ice Svalbard NTNU Open Archive (Norwegian University of Science and Technology) Arctic Arctic Ocean Svalbard Journal of Plankton Research 42 1 73 86 |
institution |
Open Polar |
collection |
NTNU Open Archive (Norwegian University of Science and Technology) |
op_collection_id |
ftntnutrondheimi |
language |
English |
description |
Apherusa glacialis is a common, sea ice-associated amphipod found throughout the Arctic Ocean and has long been considered permanently associated with the sea ice habitat. However, pelagic occurrences of A. glacialis have also been reported. It was recently suggested that A. glacialis overwinters at depth within the Atlantic-water inflow near Svalbard, to avoid being exported out of the Arctic Ocean through the Fram Strait. This study collated pelagic occurrence records over a 71-year period and found that A. glacialis was consistently found away from its presumed sea ice habitat on a pan-Arctic scale, in different depths and water masses. In the Svalbard region, A. glacialis was found in Atlantic Water both in winter and summer. Additionally, we analyzed A. glacialis size distributions throughout the year, collected mostly from sea ice, in order to elucidate potential life cycle strategies. The majority of young-of-the-year A. glacialis was found in the sea ice habitat during spring, supporting previous findings. Data on size distributions and sex ratios suggest a semelparous lifestyle. A synchronous seasonal vertical migration was not evident, but our data imply a more complex life history than previously assumed. We provide evidence that A. glacialis can no longer be regarded as an autochthonous sympagic species. publishedVersion © The Author(s) 2020. Published by Oxford University Press. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted reuse, distribution, and reproduction in any medium, provided the original work is properly cited. |
format |
Article in Journal/Newspaper |
author |
Kunisch, Erin Bluhm, Bodil Daase, Malin Gradinger, Rolf Hop, Haakon Melnikov, Igor A. Øystein, Varpe Berge, Jørgen |
spellingShingle |
Kunisch, Erin Bluhm, Bodil Daase, Malin Gradinger, Rolf Hop, Haakon Melnikov, Igor A. Øystein, Varpe Berge, Jørgen Pelagic occurrences of the ice amphipod Apherusa glacialis throughout the Arctic |
author_facet |
Kunisch, Erin Bluhm, Bodil Daase, Malin Gradinger, Rolf Hop, Haakon Melnikov, Igor A. Øystein, Varpe Berge, Jørgen |
author_sort |
Kunisch, Erin |
title |
Pelagic occurrences of the ice amphipod Apherusa glacialis throughout the Arctic |
title_short |
Pelagic occurrences of the ice amphipod Apherusa glacialis throughout the Arctic |
title_full |
Pelagic occurrences of the ice amphipod Apherusa glacialis throughout the Arctic |
title_fullStr |
Pelagic occurrences of the ice amphipod Apherusa glacialis throughout the Arctic |
title_full_unstemmed |
Pelagic occurrences of the ice amphipod Apherusa glacialis throughout the Arctic |
title_sort |
pelagic occurrences of the ice amphipod apherusa glacialis throughout the arctic |
publishDate |
2020 |
url |
http://hdl.handle.net/11250/2639559 https://doi.org/10.1093/plankt/fbz072 |
geographic |
Arctic Arctic Ocean Svalbard |
geographic_facet |
Arctic Arctic Ocean Svalbard |
genre |
Arctic Arctic Ocean Fram Strait Sea ice Svalbard |
genre_facet |
Arctic Arctic Ocean Fram Strait Sea ice Svalbard |
op_source |
73-86 42 Journal of Plankton Research 1 |
op_relation |
Journal of Plankton Research. 2020, 42 (1), 73-86. urn:issn:0142-7873 http://hdl.handle.net/11250/2639559 https://doi.org/10.1093/plankt/fbz072 cristin:1790224 |
op_rights |
Navngivelse 4.0 Internasjonal http://creativecommons.org/licenses/by/4.0/deed.no |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1093/plankt/fbz072 |
container_title |
Journal of Plankton Research |
container_volume |
42 |
container_issue |
1 |
container_start_page |
73 |
op_container_end_page |
86 |
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1766322196179845120 |