Climate change and the threat of novel marine predators in Antarctica
© The Author(s), 2017. This article is distributed under the terms of the Creative Commons Attribution License. The definitive version was published in Ecosphere 8 (2017): 10.1002/ecs2.2017, doi:10.1002/ecs2.2017. Historically low temperatures have severely limited skeleton-breaking predation on the...
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Format: | Article in Journal/Newspaper |
Language: | English |
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John Wiley & Sons
2017
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Online Access: | https://hdl.handle.net/1912/9457 |
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ftwhoas:oai:darchive.mblwhoilibrary.org:1912/9457 2023-05-15T13:48:31+02:00 Climate change and the threat of novel marine predators in Antarctica Smith, Kathryn E. Aronson, Richard B. Steffel, Brittan V. Amsler, Margaret O. Thatje, Sven Singh, Hanumant Anderson, Jeff Brothers, Cecilia Brown, Alastair Ellis, Daniel S. Havenhand, Jon N. James, William R. Moksnes, Per-Olav Randolph, Allison W. Sayre-McCord, Thomas McClintock, James B. 2017-11-30 https://hdl.handle.net/1912/9457 en_US eng John Wiley & Sons https://doi.org/10.1002/ecs2.2017 Ecosphere 8 (2017): 10.1002/ecs2.2017 https://hdl.handle.net/1912/9457 doi:10.1002/ecs2.2017 Attribution 3.0 Unported https://creativecommons.org/licenses/by/3.0/ CC-BY Ecosphere 8 (2017): 10.1002/ecs2.2017 doi:10.1002/ecs2.2017 Antarctica Bathyal Benthic Climate change Echinoidea Lithodidae Ophiuroidea Paralomis Polar emergence Predation Article 2017 ftwhoas https://doi.org/10.1002/ecs2.2017 2022-05-28T23:00:04Z © The Author(s), 2017. This article is distributed under the terms of the Creative Commons Attribution License. The definitive version was published in Ecosphere 8 (2017): 10.1002/ecs2.2017, doi:10.1002/ecs2.2017. Historically low temperatures have severely limited skeleton-breaking predation on the Antarctic shelf, facilitating the evolution of a benthic fauna poorly defended against durophagy. Now, rapid warming of the Southern Ocean is restructuring Antarctic marine ecosystems as conditions become favorable for range expansions. Populations of the lithodid crab Paralomis birsteini currently inhabit some areas of the continental slope off Antarctica. They could potentially expand along the slope and upward to the outer continental shelf, where temperatures are no longer prohibitively low. We identified two sites inhabited by different densities of lithodids in the slope environment along the western Antarctic Peninsula. Analysis of the gut contents of P. birsteini trapped on the slope revealed them to be opportunistic invertivores. The abundances of three commonly eaten, eurybathic taxa—ophiuroids, echinoids, and gastropods—were negatively associated with P. birsteini off Marguerite Bay, where lithodid densities averaged 4280 ind/km2 at depths of 1100–1499 m (range 3440–5010 ind/km2), but not off Anvers Island, where lithodid densities were lower, averaging 2060 ind/km2 at these depths (range 660–3270 ind/km2). Higher abundances of lithodids appear to exert a negative effect on invertebrate distribution on the slope. Lateral or vertical range expansions of P. birsteini at sufficient densities could substantially reduce populations of their benthic prey off Antarctica, potentially exacerbating the direct impacts of rising temperatures on the distribution and diversity of the contemporary shelf benthos. Division of Polar Programs Grant Numbers: ANT-0838466, ANT-0838844, ANT-1141877, ANT-1141896; Vetenskapsrådet Grant Number: 824-2008-6429; H2020 Marie Skłodowska-Curie Actions Grant Number: 704895; U.S. ... Article in Journal/Newspaper Antarc* Antarctic Antarctic Peninsula Antarctica Anvers Island Southern Ocean Woods Hole Scientific Community: WHOAS (Woods Hole Open Access Server) Antarctic Antarctic Peninsula Anvers ENVELOPE(-63.500,-63.500,-64.600,-64.600) Anvers Island ENVELOPE(-63.500,-63.500,-64.600,-64.600) Marguerite ENVELOPE(141.378,141.378,-66.787,-66.787) Marguerite Bay ENVELOPE(-68.000,-68.000,-68.500,-68.500) Southern Ocean The Antarctic Ecosphere 8 11 |
institution |
Open Polar |
collection |
Woods Hole Scientific Community: WHOAS (Woods Hole Open Access Server) |
op_collection_id |
ftwhoas |
language |
English |
topic |
Antarctica Bathyal Benthic Climate change Echinoidea Lithodidae Ophiuroidea Paralomis Polar emergence Predation |
spellingShingle |
Antarctica Bathyal Benthic Climate change Echinoidea Lithodidae Ophiuroidea Paralomis Polar emergence Predation Smith, Kathryn E. Aronson, Richard B. Steffel, Brittan V. Amsler, Margaret O. Thatje, Sven Singh, Hanumant Anderson, Jeff Brothers, Cecilia Brown, Alastair Ellis, Daniel S. Havenhand, Jon N. James, William R. Moksnes, Per-Olav Randolph, Allison W. Sayre-McCord, Thomas McClintock, James B. Climate change and the threat of novel marine predators in Antarctica |
topic_facet |
Antarctica Bathyal Benthic Climate change Echinoidea Lithodidae Ophiuroidea Paralomis Polar emergence Predation |
description |
© The Author(s), 2017. This article is distributed under the terms of the Creative Commons Attribution License. The definitive version was published in Ecosphere 8 (2017): 10.1002/ecs2.2017, doi:10.1002/ecs2.2017. Historically low temperatures have severely limited skeleton-breaking predation on the Antarctic shelf, facilitating the evolution of a benthic fauna poorly defended against durophagy. Now, rapid warming of the Southern Ocean is restructuring Antarctic marine ecosystems as conditions become favorable for range expansions. Populations of the lithodid crab Paralomis birsteini currently inhabit some areas of the continental slope off Antarctica. They could potentially expand along the slope and upward to the outer continental shelf, where temperatures are no longer prohibitively low. We identified two sites inhabited by different densities of lithodids in the slope environment along the western Antarctic Peninsula. Analysis of the gut contents of P. birsteini trapped on the slope revealed them to be opportunistic invertivores. The abundances of three commonly eaten, eurybathic taxa—ophiuroids, echinoids, and gastropods—were negatively associated with P. birsteini off Marguerite Bay, where lithodid densities averaged 4280 ind/km2 at depths of 1100–1499 m (range 3440–5010 ind/km2), but not off Anvers Island, where lithodid densities were lower, averaging 2060 ind/km2 at these depths (range 660–3270 ind/km2). Higher abundances of lithodids appear to exert a negative effect on invertebrate distribution on the slope. Lateral or vertical range expansions of P. birsteini at sufficient densities could substantially reduce populations of their benthic prey off Antarctica, potentially exacerbating the direct impacts of rising temperatures on the distribution and diversity of the contemporary shelf benthos. Division of Polar Programs Grant Numbers: ANT-0838466, ANT-0838844, ANT-1141877, ANT-1141896; Vetenskapsrådet Grant Number: 824-2008-6429; H2020 Marie Skłodowska-Curie Actions Grant Number: 704895; U.S. ... |
format |
Article in Journal/Newspaper |
author |
Smith, Kathryn E. Aronson, Richard B. Steffel, Brittan V. Amsler, Margaret O. Thatje, Sven Singh, Hanumant Anderson, Jeff Brothers, Cecilia Brown, Alastair Ellis, Daniel S. Havenhand, Jon N. James, William R. Moksnes, Per-Olav Randolph, Allison W. Sayre-McCord, Thomas McClintock, James B. |
author_facet |
Smith, Kathryn E. Aronson, Richard B. Steffel, Brittan V. Amsler, Margaret O. Thatje, Sven Singh, Hanumant Anderson, Jeff Brothers, Cecilia Brown, Alastair Ellis, Daniel S. Havenhand, Jon N. James, William R. Moksnes, Per-Olav Randolph, Allison W. Sayre-McCord, Thomas McClintock, James B. |
author_sort |
Smith, Kathryn E. |
title |
Climate change and the threat of novel marine predators in Antarctica |
title_short |
Climate change and the threat of novel marine predators in Antarctica |
title_full |
Climate change and the threat of novel marine predators in Antarctica |
title_fullStr |
Climate change and the threat of novel marine predators in Antarctica |
title_full_unstemmed |
Climate change and the threat of novel marine predators in Antarctica |
title_sort |
climate change and the threat of novel marine predators in antarctica |
publisher |
John Wiley & Sons |
publishDate |
2017 |
url |
https://hdl.handle.net/1912/9457 |
long_lat |
ENVELOPE(-63.500,-63.500,-64.600,-64.600) ENVELOPE(-63.500,-63.500,-64.600,-64.600) ENVELOPE(141.378,141.378,-66.787,-66.787) ENVELOPE(-68.000,-68.000,-68.500,-68.500) |
geographic |
Antarctic Antarctic Peninsula Anvers Anvers Island Marguerite Marguerite Bay Southern Ocean The Antarctic |
geographic_facet |
Antarctic Antarctic Peninsula Anvers Anvers Island Marguerite Marguerite Bay Southern Ocean The Antarctic |
genre |
Antarc* Antarctic Antarctic Peninsula Antarctica Anvers Island Southern Ocean |
genre_facet |
Antarc* Antarctic Antarctic Peninsula Antarctica Anvers Island Southern Ocean |
op_source |
Ecosphere 8 (2017): 10.1002/ecs2.2017 doi:10.1002/ecs2.2017 |
op_relation |
https://doi.org/10.1002/ecs2.2017 Ecosphere 8 (2017): 10.1002/ecs2.2017 https://hdl.handle.net/1912/9457 doi:10.1002/ecs2.2017 |
op_rights |
Attribution 3.0 Unported https://creativecommons.org/licenses/by/3.0/ |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1002/ecs2.2017 |
container_title |
Ecosphere |
container_volume |
8 |
container_issue |
11 |
_version_ |
1766249347075276800 |