Marine pelagic ecosystems: the West Antarctic Peninsula
The marine ecosystem of the West Antarctic Peninsula (WAP) extends from the Bellingshausen Sea to the northern tip of the peninsula and from the mostly glaciated coast across the continental shelf to the shelf break in the west. The glacially sculpted coastline along the peninsula is highly convolut...
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ftwilliammarycol:oai:scholarworks.wm.edu:vimsarticles-1658 2023-06-11T04:05:13+02:00 Marine pelagic ecosystems: the West Antarctic Peninsula Ducklow, Hugh Baker, Karen Martinson, Douglas G. Quetin, Langdon B. Ross, Robin M. Smith, Raymond C. Stammerjohn, Sharon E. Vernet, Maria Fraser, William R. 2006-11-30T08:00:00Z application/pdf https://scholarworks.wm.edu/vimsarticles/654 https://doi.org/10.1098/rstb.2006.1955 https://scholarworks.wm.edu/context/vimsarticles/article/1658/viewcontent/Ducklow_2007_Marine_pelagic_ecosystems_the_west_.pdf unknown W&M ScholarWorks https://scholarworks.wm.edu/vimsarticles/654 doi: doi:10.1098/rstb.2006.1955 https://scholarworks.wm.edu/context/vimsarticles/article/1658/viewcontent/Ducklow_2007_Marine_pelagic_ecosystems_the_west_.pdf VIMS Articles Palmer Station LTER climate change Ade´lie penguin Antarctic krill Antarctic Circumpolar Current Biological Sciences Peer-Reviewed Articles Marine Biology text 2006 ftwilliammarycol https://doi.org/10.1098/rstb.2006.1955</p>10.1098/rstb.2006.1955 2023-05-04T17:37:57Z The marine ecosystem of the West Antarctic Peninsula (WAP) extends from the Bellingshausen Sea to the northern tip of the peninsula and from the mostly glaciated coast across the continental shelf to the shelf break in the west. The glacially sculpted coastline along the peninsula is highly convoluted and characterized by deep embayments that are often interconnected by channels that facilitate transport of heat and nutrients into the shelf domain. The ecosystem is divided into three subregions, the continental slope, shelf and coastal regions, each with unique ocean dynamics, water mass and biological distributions. The WAP shelf lies within the Antarctic Sea Ice Zone (SIZ) and like other SIZs, the WAP system is very productive, supporting large stocks of marine mammals, birds and the Antarctic krill, Euphausia superba. Ecosystem dynamics is dominated by the seasonal and interannual variation in sea ice extent and retreat. The Antarctic Peninsula is one among the most rapidly warming regions on Earth, having experienced a 28C increase in the annual mean temperature and a 68C rise in the mean winter temperature since 1950. Delivery of heat from the Antarctic Circumpolar Current has increased significantly in the past decade, sufficient to drive to a 0.68C warming of the upper 300 m of shelf water. In the past 50 years and continuing in the twenty-first century, the warm, moist maritime climate of the northern WAP has been migrating south, displacing the once dominant cold, dry continental Antarctic climate and causing multi-level responses in the marine ecosystem. Ecosystem responses to the regional warming include increased heat transport, decreased sea ice extent and duration, local declines in icedependent Ade´lie penguins, increase in ice-tolerant gentoo and chinstrap penguins, alterations in phytoplankton and zooplankton community composition and changes in krill recruitment, abundance and availability to predators. The climate/ecological gradients extending along theWAPand the presence of monitoring ... Text Antarc* Antarctic Antarctic Krill Antarctic Peninsula Bellingshausen Sea Euphausia superba Sea ice W&M ScholarWorks Antarctic The Antarctic Antarctic Peninsula Bellingshausen Sea Palmer Station ENVELOPE(-64.050,-64.050,-64.770,-64.770) Palmer-Station ENVELOPE(-64.050,-64.050,-64.770,-64.770) |
institution |
Open Polar |
collection |
W&M ScholarWorks |
op_collection_id |
ftwilliammarycol |
language |
unknown |
topic |
Palmer Station LTER climate change Ade´lie penguin Antarctic krill Antarctic Circumpolar Current Biological Sciences Peer-Reviewed Articles Marine Biology |
spellingShingle |
Palmer Station LTER climate change Ade´lie penguin Antarctic krill Antarctic Circumpolar Current Biological Sciences Peer-Reviewed Articles Marine Biology Ducklow, Hugh Baker, Karen Martinson, Douglas G. Quetin, Langdon B. Ross, Robin M. Smith, Raymond C. Stammerjohn, Sharon E. Vernet, Maria Fraser, William R. Marine pelagic ecosystems: the West Antarctic Peninsula |
topic_facet |
Palmer Station LTER climate change Ade´lie penguin Antarctic krill Antarctic Circumpolar Current Biological Sciences Peer-Reviewed Articles Marine Biology |
description |
The marine ecosystem of the West Antarctic Peninsula (WAP) extends from the Bellingshausen Sea to the northern tip of the peninsula and from the mostly glaciated coast across the continental shelf to the shelf break in the west. The glacially sculpted coastline along the peninsula is highly convoluted and characterized by deep embayments that are often interconnected by channels that facilitate transport of heat and nutrients into the shelf domain. The ecosystem is divided into three subregions, the continental slope, shelf and coastal regions, each with unique ocean dynamics, water mass and biological distributions. The WAP shelf lies within the Antarctic Sea Ice Zone (SIZ) and like other SIZs, the WAP system is very productive, supporting large stocks of marine mammals, birds and the Antarctic krill, Euphausia superba. Ecosystem dynamics is dominated by the seasonal and interannual variation in sea ice extent and retreat. The Antarctic Peninsula is one among the most rapidly warming regions on Earth, having experienced a 28C increase in the annual mean temperature and a 68C rise in the mean winter temperature since 1950. Delivery of heat from the Antarctic Circumpolar Current has increased significantly in the past decade, sufficient to drive to a 0.68C warming of the upper 300 m of shelf water. In the past 50 years and continuing in the twenty-first century, the warm, moist maritime climate of the northern WAP has been migrating south, displacing the once dominant cold, dry continental Antarctic climate and causing multi-level responses in the marine ecosystem. Ecosystem responses to the regional warming include increased heat transport, decreased sea ice extent and duration, local declines in icedependent Ade´lie penguins, increase in ice-tolerant gentoo and chinstrap penguins, alterations in phytoplankton and zooplankton community composition and changes in krill recruitment, abundance and availability to predators. The climate/ecological gradients extending along theWAPand the presence of monitoring ... |
format |
Text |
author |
Ducklow, Hugh Baker, Karen Martinson, Douglas G. Quetin, Langdon B. Ross, Robin M. Smith, Raymond C. Stammerjohn, Sharon E. Vernet, Maria Fraser, William R. |
author_facet |
Ducklow, Hugh Baker, Karen Martinson, Douglas G. Quetin, Langdon B. Ross, Robin M. Smith, Raymond C. Stammerjohn, Sharon E. Vernet, Maria Fraser, William R. |
author_sort |
Ducklow, Hugh |
title |
Marine pelagic ecosystems: the West Antarctic Peninsula |
title_short |
Marine pelagic ecosystems: the West Antarctic Peninsula |
title_full |
Marine pelagic ecosystems: the West Antarctic Peninsula |
title_fullStr |
Marine pelagic ecosystems: the West Antarctic Peninsula |
title_full_unstemmed |
Marine pelagic ecosystems: the West Antarctic Peninsula |
title_sort |
marine pelagic ecosystems: the west antarctic peninsula |
publisher |
W&M ScholarWorks |
publishDate |
2006 |
url |
https://scholarworks.wm.edu/vimsarticles/654 https://doi.org/10.1098/rstb.2006.1955 https://scholarworks.wm.edu/context/vimsarticles/article/1658/viewcontent/Ducklow_2007_Marine_pelagic_ecosystems_the_west_.pdf |
long_lat |
ENVELOPE(-64.050,-64.050,-64.770,-64.770) ENVELOPE(-64.050,-64.050,-64.770,-64.770) |
geographic |
Antarctic The Antarctic Antarctic Peninsula Bellingshausen Sea Palmer Station Palmer-Station |
geographic_facet |
Antarctic The Antarctic Antarctic Peninsula Bellingshausen Sea Palmer Station Palmer-Station |
genre |
Antarc* Antarctic Antarctic Krill Antarctic Peninsula Bellingshausen Sea Euphausia superba Sea ice |
genre_facet |
Antarc* Antarctic Antarctic Krill Antarctic Peninsula Bellingshausen Sea Euphausia superba Sea ice |
op_source |
VIMS Articles |
op_relation |
https://scholarworks.wm.edu/vimsarticles/654 doi: doi:10.1098/rstb.2006.1955 https://scholarworks.wm.edu/context/vimsarticles/article/1658/viewcontent/Ducklow_2007_Marine_pelagic_ecosystems_the_west_.pdf |
op_doi |
https://doi.org/10.1098/rstb.2006.1955</p>10.1098/rstb.2006.1955 |
_version_ |
1768372980838039552 |