Collection of large benthic invertebrates in sediment traps in the Amundsen Sea, Antarctica
To study sinking particle sources and dynamics, sediment traps were deployed at three sites in the Amundsen Sea for 1 year from February–March 2012 and at one site from February 2016 to February 2018. Unexpectedly, large benthic invertebrates were found in three sediment traps deployed 130–567 m abo...
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ftcopernicus:oai:publications.copernicus.org:bg74727 2023-05-15T13:23:36+02:00 Collection of large benthic invertebrates in sediment traps in the Amundsen Sea, Antarctica Kim, Minkyoung Yang, Eun Jin Kim, Hyung Jeek Kim, Dongseon Kim, Tae-Wan La, Hyoung Sul Lee, SangHoon Hwang, Jeomshik 2019-07-11 application/pdf https://doi.org/10.5194/bg-16-2683-2019 https://www.biogeosciences.net/16/2683/2019/ eng eng doi:10.5194/bg-16-2683-2019 https://www.biogeosciences.net/16/2683/2019/ eISSN: 1726-4189 Text 2019 ftcopernicus https://doi.org/10.5194/bg-16-2683-2019 2019-12-24T09:48:56Z To study sinking particle sources and dynamics, sediment traps were deployed at three sites in the Amundsen Sea for 1 year from February–March 2012 and at one site from February 2016 to February 2018. Unexpectedly, large benthic invertebrates were found in three sediment traps deployed 130–567 m above the sea floor. The organisms included long and slender worms, a sea urchin, and juvenile scallops of varying sizes. This is the first reported collection of these benthic invertebrates in sediment traps. The collection of these organisms, predominantly during the austral winter, and their intact bodies suggests they were trapped in anchor ice, incorporated into the overlying sea ice, and subsequently transported by ice rafting. The observations imply that anchor ice forms episodically in the Amundsen Sea and has biological impacts on benthic ecosystems. An alternative hypothesis that these organisms spend their juvenile period underneath the sea ice and subsequently sink to the seafloor is also suggested. Text Amundsen Sea Antarc* Antarctica Sea ice Copernicus Publications: E-Journals Amundsen Sea Austral Biogeosciences 16 13 2683 2691 |
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Open Polar |
collection |
Copernicus Publications: E-Journals |
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ftcopernicus |
language |
English |
description |
To study sinking particle sources and dynamics, sediment traps were deployed at three sites in the Amundsen Sea for 1 year from February–March 2012 and at one site from February 2016 to February 2018. Unexpectedly, large benthic invertebrates were found in three sediment traps deployed 130–567 m above the sea floor. The organisms included long and slender worms, a sea urchin, and juvenile scallops of varying sizes. This is the first reported collection of these benthic invertebrates in sediment traps. The collection of these organisms, predominantly during the austral winter, and their intact bodies suggests they were trapped in anchor ice, incorporated into the overlying sea ice, and subsequently transported by ice rafting. The observations imply that anchor ice forms episodically in the Amundsen Sea and has biological impacts on benthic ecosystems. An alternative hypothesis that these organisms spend their juvenile period underneath the sea ice and subsequently sink to the seafloor is also suggested. |
format |
Text |
author |
Kim, Minkyoung Yang, Eun Jin Kim, Hyung Jeek Kim, Dongseon Kim, Tae-Wan La, Hyoung Sul Lee, SangHoon Hwang, Jeomshik |
spellingShingle |
Kim, Minkyoung Yang, Eun Jin Kim, Hyung Jeek Kim, Dongseon Kim, Tae-Wan La, Hyoung Sul Lee, SangHoon Hwang, Jeomshik Collection of large benthic invertebrates in sediment traps in the Amundsen Sea, Antarctica |
author_facet |
Kim, Minkyoung Yang, Eun Jin Kim, Hyung Jeek Kim, Dongseon Kim, Tae-Wan La, Hyoung Sul Lee, SangHoon Hwang, Jeomshik |
author_sort |
Kim, Minkyoung |
title |
Collection of large benthic invertebrates in sediment traps in the Amundsen Sea, Antarctica |
title_short |
Collection of large benthic invertebrates in sediment traps in the Amundsen Sea, Antarctica |
title_full |
Collection of large benthic invertebrates in sediment traps in the Amundsen Sea, Antarctica |
title_fullStr |
Collection of large benthic invertebrates in sediment traps in the Amundsen Sea, Antarctica |
title_full_unstemmed |
Collection of large benthic invertebrates in sediment traps in the Amundsen Sea, Antarctica |
title_sort |
collection of large benthic invertebrates in sediment traps in the amundsen sea, antarctica |
publishDate |
2019 |
url |
https://doi.org/10.5194/bg-16-2683-2019 https://www.biogeosciences.net/16/2683/2019/ |
geographic |
Amundsen Sea Austral |
geographic_facet |
Amundsen Sea Austral |
genre |
Amundsen Sea Antarc* Antarctica Sea ice |
genre_facet |
Amundsen Sea Antarc* Antarctica Sea ice |
op_source |
eISSN: 1726-4189 |
op_relation |
doi:10.5194/bg-16-2683-2019 https://www.biogeosciences.net/16/2683/2019/ |
op_doi |
https://doi.org/10.5194/bg-16-2683-2019 |
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Biogeosciences |
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16 |
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13 |
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2683 |
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2691 |
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1766373425902780416 |