A vast icefish breeding colony discovered in the Antarctic
A breeding colony of notothenioid icefish ( Neopagetopsis ionah , Nybelin 1947) of globally unprecedented extent has been discovered in the southern Weddell Sea, Antarctica. The colony was estimated to cover at least ∼240 km 2 of the eastern flank of the Filchner Trough, comprised of fish nests at a...
Published in: | Current Biology |
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2022
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Online Access: | https://portal.findresearcher.sdu.dk/da/publications/9baec674-727e-4410-aeda-c0018050a35c https://doi.org/10.1016/j.cub.2021.12.022 https://findresearcher.sdu.dk/ws/files/199739230/PIIS0960982221016985.pdf |
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ftsydanskunivpub:oai:sdu.dk:publications/9baec674-727e-4410-aeda-c0018050a35c 2024-09-15T17:40:48+00:00 A vast icefish breeding colony discovered in the Antarctic Purser, Autun Hehemann, Laura Boehringer, Lilian Tippenhauer, Sandra Wege, Mia Bornemann, Horst Pineda-Metz, Santiago E.A. Flintrop, Clara M. Koch, Florian Hellmer, Hartmut H. Burkhardt-Holm, Patricia Janout, Markus Werner, Ellen Glemser, Barbara Balaguer, Jenna Rogge, Andreas Holtappels, Moritz Wenzhoefer, Frank 2022-02-28 application/pdf https://portal.findresearcher.sdu.dk/da/publications/9baec674-727e-4410-aeda-c0018050a35c https://doi.org/10.1016/j.cub.2021.12.022 https://findresearcher.sdu.dk/ws/files/199739230/PIIS0960982221016985.pdf eng eng https://portal.findresearcher.sdu.dk/da/publications/9baec674-727e-4410-aeda-c0018050a35c info:eu-repo/semantics/openAccess Purser , A , Hehemann , L , Boehringer , L , Tippenhauer , S , Wege , M , Bornemann , H , Pineda-Metz , S E A , Flintrop , C M , Koch , F , Hellmer , H H , Burkhardt-Holm , P , Janout , M , Werner , E , Glemser , B , Balaguer , J , Rogge , A , Holtappels , M & Wenzhoefer , F 2022 , ' A vast icefish breeding colony discovered in the Antarctic ' , Current Biology , vol. 32 , no. 4 , pp. 842-850.e4 . https://doi.org/10.1016/j.cub.2021.12.022 Antarctic fish icefish Leptonychotes weddellii marine protected area modified warm deep water MPA Neopagetopsis ionah Weddell Sea Weddell seal article 2022 ftsydanskunivpub https://doi.org/10.1016/j.cub.2021.12.022 2024-07-15T23:45:17Z A breeding colony of notothenioid icefish ( Neopagetopsis ionah , Nybelin 1947) of globally unprecedented extent has been discovered in the southern Weddell Sea, Antarctica. The colony was estimated to cover at least ∼240 km 2 of the eastern flank of the Filchner Trough, comprised of fish nests at a density of 0.26 nests per square meter, representing an estimated total of ∼60 million active nests and associated fish biomass of >60,000 tonnes. The majority of nests were each occupied by 1 adult fish guarding 1,735 eggs (±433 SD). Bottom water temperatures measured across the nesting colony were up to 2°C warmer than the surrounding bottom waters, indicating a spatial correlation between the modified Warm Deep Water (mWDW) upflow onto the Weddell Shelf and the active nesting area. Historical and concurrently collected seal movement data indicate that this concentrated fish biomass may be utilized by predators such as Weddell seals ( Leptonychotes weddellii , Lesson 1826). Numerous degraded fish carcasses within and near the nesting colony suggest that, in death as well as life, these fish provide input for local food webs and influence local biogeochemical processing. To our knowledge, the area surveyed harbors the most spatially expansive continuous fish breeding colony discovered to date globally at any depth, as well as an exceptionally high Antarctic seafloor biomass. This discovery provides support for the establishment of a regional marine protected area in the Southern Ocean under the Convention on the Conservation of Antarctic Marine Living Resources (CCAMLR) umbrella. Article in Journal/Newspaper Antarc* Antarctic Antarctica Icefish Southern Ocean Weddell Sea Weddell Seal Weddell Seals University of Southern Denmark Research Portal Current Biology 32 4 842 850.e4 |
institution |
Open Polar |
collection |
University of Southern Denmark Research Portal |
op_collection_id |
ftsydanskunivpub |
language |
English |
topic |
Antarctic fish icefish Leptonychotes weddellii marine protected area modified warm deep water MPA Neopagetopsis ionah Weddell Sea Weddell seal |
spellingShingle |
Antarctic fish icefish Leptonychotes weddellii marine protected area modified warm deep water MPA Neopagetopsis ionah Weddell Sea Weddell seal Purser, Autun Hehemann, Laura Boehringer, Lilian Tippenhauer, Sandra Wege, Mia Bornemann, Horst Pineda-Metz, Santiago E.A. Flintrop, Clara M. Koch, Florian Hellmer, Hartmut H. Burkhardt-Holm, Patricia Janout, Markus Werner, Ellen Glemser, Barbara Balaguer, Jenna Rogge, Andreas Holtappels, Moritz Wenzhoefer, Frank A vast icefish breeding colony discovered in the Antarctic |
topic_facet |
Antarctic fish icefish Leptonychotes weddellii marine protected area modified warm deep water MPA Neopagetopsis ionah Weddell Sea Weddell seal |
description |
A breeding colony of notothenioid icefish ( Neopagetopsis ionah , Nybelin 1947) of globally unprecedented extent has been discovered in the southern Weddell Sea, Antarctica. The colony was estimated to cover at least ∼240 km 2 of the eastern flank of the Filchner Trough, comprised of fish nests at a density of 0.26 nests per square meter, representing an estimated total of ∼60 million active nests and associated fish biomass of >60,000 tonnes. The majority of nests were each occupied by 1 adult fish guarding 1,735 eggs (±433 SD). Bottom water temperatures measured across the nesting colony were up to 2°C warmer than the surrounding bottom waters, indicating a spatial correlation between the modified Warm Deep Water (mWDW) upflow onto the Weddell Shelf and the active nesting area. Historical and concurrently collected seal movement data indicate that this concentrated fish biomass may be utilized by predators such as Weddell seals ( Leptonychotes weddellii , Lesson 1826). Numerous degraded fish carcasses within and near the nesting colony suggest that, in death as well as life, these fish provide input for local food webs and influence local biogeochemical processing. To our knowledge, the area surveyed harbors the most spatially expansive continuous fish breeding colony discovered to date globally at any depth, as well as an exceptionally high Antarctic seafloor biomass. This discovery provides support for the establishment of a regional marine protected area in the Southern Ocean under the Convention on the Conservation of Antarctic Marine Living Resources (CCAMLR) umbrella. |
format |
Article in Journal/Newspaper |
author |
Purser, Autun Hehemann, Laura Boehringer, Lilian Tippenhauer, Sandra Wege, Mia Bornemann, Horst Pineda-Metz, Santiago E.A. Flintrop, Clara M. Koch, Florian Hellmer, Hartmut H. Burkhardt-Holm, Patricia Janout, Markus Werner, Ellen Glemser, Barbara Balaguer, Jenna Rogge, Andreas Holtappels, Moritz Wenzhoefer, Frank |
author_facet |
Purser, Autun Hehemann, Laura Boehringer, Lilian Tippenhauer, Sandra Wege, Mia Bornemann, Horst Pineda-Metz, Santiago E.A. Flintrop, Clara M. Koch, Florian Hellmer, Hartmut H. Burkhardt-Holm, Patricia Janout, Markus Werner, Ellen Glemser, Barbara Balaguer, Jenna Rogge, Andreas Holtappels, Moritz Wenzhoefer, Frank |
author_sort |
Purser, Autun |
title |
A vast icefish breeding colony discovered in the Antarctic |
title_short |
A vast icefish breeding colony discovered in the Antarctic |
title_full |
A vast icefish breeding colony discovered in the Antarctic |
title_fullStr |
A vast icefish breeding colony discovered in the Antarctic |
title_full_unstemmed |
A vast icefish breeding colony discovered in the Antarctic |
title_sort |
vast icefish breeding colony discovered in the antarctic |
publishDate |
2022 |
url |
https://portal.findresearcher.sdu.dk/da/publications/9baec674-727e-4410-aeda-c0018050a35c https://doi.org/10.1016/j.cub.2021.12.022 https://findresearcher.sdu.dk/ws/files/199739230/PIIS0960982221016985.pdf |
genre |
Antarc* Antarctic Antarctica Icefish Southern Ocean Weddell Sea Weddell Seal Weddell Seals |
genre_facet |
Antarc* Antarctic Antarctica Icefish Southern Ocean Weddell Sea Weddell Seal Weddell Seals |
op_source |
Purser , A , Hehemann , L , Boehringer , L , Tippenhauer , S , Wege , M , Bornemann , H , Pineda-Metz , S E A , Flintrop , C M , Koch , F , Hellmer , H H , Burkhardt-Holm , P , Janout , M , Werner , E , Glemser , B , Balaguer , J , Rogge , A , Holtappels , M & Wenzhoefer , F 2022 , ' A vast icefish breeding colony discovered in the Antarctic ' , Current Biology , vol. 32 , no. 4 , pp. 842-850.e4 . https://doi.org/10.1016/j.cub.2021.12.022 |
op_relation |
https://portal.findresearcher.sdu.dk/da/publications/9baec674-727e-4410-aeda-c0018050a35c |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1016/j.cub.2021.12.022 |
container_title |
Current Biology |
container_volume |
32 |
container_issue |
4 |
container_start_page |
842 |
op_container_end_page |
850.e4 |
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1810486850738978816 |