Changing chain: past, present and future of the Scotia Arc's and Antarctica's shallow benthic communities
The Scotia Arc links Patagonia to the Antarctic Peninsula. This island chain has changed considerably since Antarctica’s geographic and thermal isolation from other land and water masses. Now its rates of air, land and fresh-water climate change are among the highest measured. This review examines w...
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ftdoajarticles:oai:doaj.org/article:5e3f8362b32f49128ffddefcf8f393d5 2023-05-15T13:52:02+02:00 Changing chain: past, present and future of the Scotia Arc's and Antarctica's shallow benthic communities David K.A. Barnes 2005-12-01T00:00:00Z https://doi.org/10.3989/scimar.2005.69s265 https://doaj.org/article/5e3f8362b32f49128ffddefcf8f393d5 EN eng Consejo Superior de Investigaciones Científicas http://scientiamarina.revistas.csic.es/index.php/scientiamarina/article/view/312 https://doaj.org/toc/0214-8358 https://doaj.org/toc/1886-8134 0214-8358 1886-8134 doi:10.3989/scimar.2005.69s265 https://doaj.org/article/5e3f8362b32f49128ffddefcf8f393d5 Scientia Marina, Vol 69, Iss S2, Pp 65-89 (2005) polar benthos zonation metabolism suspension-feeding growth reproduction Aquaculture. Fisheries. Angling SH1-691 article 2005 ftdoajarticles https://doi.org/10.3989/scimar.2005.69s265 2022-12-31T07:02:59Z The Scotia Arc links Patagonia to the Antarctic Peninsula. This island chain has changed considerably since Antarctica’s geographic and thermal isolation from other land and water masses. Now its rates of air, land and fresh-water climate change are among the highest measured. This review examines work on the shallow water benthos of this region in the context of climate change. In summer, primary productivity is as intense as anywhere, whilst in winter the water reaches unprecedented clarity. Suspension feeders may eat for just a few months but others feed all year. Growth and reproduction are up to 50x slower than non-polar rates. Life here is in the slow lane. There is intense summer disturbance from ice-scour and wave action. This has erased shore zonation and created it below the surface. In contrast to summer disturbance, the winter is among the calmest and most thermally stable environments, when the area is overlain by fast ice. Whilst few animal phyla or species are represented on land, phyletic richness—and in some groups species richness—rivals that of tropical regions. Data showing clines in benthic richness at several taxonomic levels across the Patagonia-South Georgia-Signy Is.-Adelaide Is. chain and 50 years of ice-sheet retreat are presented. Article in Journal/Newspaper Antarc* Antarctic Antarctic Peninsula Ice Sheet Directory of Open Access Journals: DOAJ Articles Antarctic Antarctic Peninsula Patagonia The Antarctic Scientia Marina 69 S2 65 89 |
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Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
polar benthos zonation metabolism suspension-feeding growth reproduction Aquaculture. Fisheries. Angling SH1-691 |
spellingShingle |
polar benthos zonation metabolism suspension-feeding growth reproduction Aquaculture. Fisheries. Angling SH1-691 David K.A. Barnes Changing chain: past, present and future of the Scotia Arc's and Antarctica's shallow benthic communities |
topic_facet |
polar benthos zonation metabolism suspension-feeding growth reproduction Aquaculture. Fisheries. Angling SH1-691 |
description |
The Scotia Arc links Patagonia to the Antarctic Peninsula. This island chain has changed considerably since Antarctica’s geographic and thermal isolation from other land and water masses. Now its rates of air, land and fresh-water climate change are among the highest measured. This review examines work on the shallow water benthos of this region in the context of climate change. In summer, primary productivity is as intense as anywhere, whilst in winter the water reaches unprecedented clarity. Suspension feeders may eat for just a few months but others feed all year. Growth and reproduction are up to 50x slower than non-polar rates. Life here is in the slow lane. There is intense summer disturbance from ice-scour and wave action. This has erased shore zonation and created it below the surface. In contrast to summer disturbance, the winter is among the calmest and most thermally stable environments, when the area is overlain by fast ice. Whilst few animal phyla or species are represented on land, phyletic richness—and in some groups species richness—rivals that of tropical regions. Data showing clines in benthic richness at several taxonomic levels across the Patagonia-South Georgia-Signy Is.-Adelaide Is. chain and 50 years of ice-sheet retreat are presented. |
format |
Article in Journal/Newspaper |
author |
David K.A. Barnes |
author_facet |
David K.A. Barnes |
author_sort |
David K.A. Barnes |
title |
Changing chain: past, present and future of the Scotia Arc's and Antarctica's shallow benthic communities |
title_short |
Changing chain: past, present and future of the Scotia Arc's and Antarctica's shallow benthic communities |
title_full |
Changing chain: past, present and future of the Scotia Arc's and Antarctica's shallow benthic communities |
title_fullStr |
Changing chain: past, present and future of the Scotia Arc's and Antarctica's shallow benthic communities |
title_full_unstemmed |
Changing chain: past, present and future of the Scotia Arc's and Antarctica's shallow benthic communities |
title_sort |
changing chain: past, present and future of the scotia arc's and antarctica's shallow benthic communities |
publisher |
Consejo Superior de Investigaciones Científicas |
publishDate |
2005 |
url |
https://doi.org/10.3989/scimar.2005.69s265 https://doaj.org/article/5e3f8362b32f49128ffddefcf8f393d5 |
geographic |
Antarctic Antarctic Peninsula Patagonia The Antarctic |
geographic_facet |
Antarctic Antarctic Peninsula Patagonia The Antarctic |
genre |
Antarc* Antarctic Antarctic Peninsula Ice Sheet |
genre_facet |
Antarc* Antarctic Antarctic Peninsula Ice Sheet |
op_source |
Scientia Marina, Vol 69, Iss S2, Pp 65-89 (2005) |
op_relation |
http://scientiamarina.revistas.csic.es/index.php/scientiamarina/article/view/312 https://doaj.org/toc/0214-8358 https://doaj.org/toc/1886-8134 0214-8358 1886-8134 doi:10.3989/scimar.2005.69s265 https://doaj.org/article/5e3f8362b32f49128ffddefcf8f393d5 |
op_doi |
https://doi.org/10.3989/scimar.2005.69s265 |
container_title |
Scientia Marina |
container_volume |
69 |
container_issue |
S2 |
container_start_page |
65 |
op_container_end_page |
89 |
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1766256224406339584 |