Observations and predictions of Arctic climatic change: Potential effects on marine mammals. Arctic 50(4):308
ABSTRACT. Recent analyses have revealed trends over the past 20–30 years of decreasing sea ice extent in the Arctic Ocean coincident with warming trends. Such trends may be indicative of the polar amplification of warming predicted for the next several decades in response to increasing atmospheric C...
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ftciteseerx:oai:CiteSeerX.psu:10.1.1.572.2183 2023-05-15T14:30:30+02:00 Observations and predictions of Arctic climatic change: Potential effects on marine mammals. Arctic 50(4):308 Cynthia T. Tynan Douglas P. Demaster The Pennsylvania State University CiteSeerX Archives 1997 application/pdf http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.572.2183 http://www.alaskasealife.org/New/Contribute/pdf/Tynan_DeMaster_1997.pdf en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.572.2183 http://www.alaskasealife.org/New/Contribute/pdf/Tynan_DeMaster_1997.pdf Metadata may be used without restrictions as long as the oai identifier remains attached to it. http://www.alaskasealife.org/New/Contribute/pdf/Tynan_DeMaster_1997.pdf text 1997 ftciteseerx 2016-01-08T12:35:01Z ABSTRACT. Recent analyses have revealed trends over the past 20–30 years of decreasing sea ice extent in the Arctic Ocean coincident with warming trends. Such trends may be indicative of the polar amplification of warming predicted for the next several decades in response to increasing atmospheric CO2. We have summarized these predictions and nonuniform patterns of arctic climate change in order to address their potential effects on marine mammals. Since recent trends in sea ice extent are nonuniform, the direct and indirect effects on marine mammals are expected to vary geographically. Changes in the extent and concentration of sea ice may alter the seasonal distributions, geographic ranges, patterns of migration, nutritional status, reproductive success, and ultimately the abundance and stock structure of some species. Ice-associated seals, which rely on suitable ice substrate for resting, pupping, and molting, may be especially vulnerable to such changes. As recent decreases in ice coverage have been more extensive in the Siberian Arctic (60˚E–180˚E) than in the Beaufort Sea and western sectors, we speculate that marine mammal populations in the Siberian Arctic may be among the first to experience climate-induced geographic shifts or altered reproductive capacity due to persistent changes in ice extent. Alteration in the extent and productivity of ice-edge systems may affect the density and distribution of important ice-associated prey of marine mammals, such as arctic cod Boreogadus saida and sympagic (“with ice”) amphipods. Present climate models, however, are insufficient to predict regional ice dynamics, winds, mesoscale features Text Arctic cod Arctic Arctic Ocean Beaufort Sea Boreogadus saida Climate change Sea ice Unknown Arctic Arctic Ocean |
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English |
description |
ABSTRACT. Recent analyses have revealed trends over the past 20–30 years of decreasing sea ice extent in the Arctic Ocean coincident with warming trends. Such trends may be indicative of the polar amplification of warming predicted for the next several decades in response to increasing atmospheric CO2. We have summarized these predictions and nonuniform patterns of arctic climate change in order to address their potential effects on marine mammals. Since recent trends in sea ice extent are nonuniform, the direct and indirect effects on marine mammals are expected to vary geographically. Changes in the extent and concentration of sea ice may alter the seasonal distributions, geographic ranges, patterns of migration, nutritional status, reproductive success, and ultimately the abundance and stock structure of some species. Ice-associated seals, which rely on suitable ice substrate for resting, pupping, and molting, may be especially vulnerable to such changes. As recent decreases in ice coverage have been more extensive in the Siberian Arctic (60˚E–180˚E) than in the Beaufort Sea and western sectors, we speculate that marine mammal populations in the Siberian Arctic may be among the first to experience climate-induced geographic shifts or altered reproductive capacity due to persistent changes in ice extent. Alteration in the extent and productivity of ice-edge systems may affect the density and distribution of important ice-associated prey of marine mammals, such as arctic cod Boreogadus saida and sympagic (“with ice”) amphipods. Present climate models, however, are insufficient to predict regional ice dynamics, winds, mesoscale features |
author2 |
The Pennsylvania State University CiteSeerX Archives |
format |
Text |
author |
Cynthia T. Tynan Douglas P. Demaster |
spellingShingle |
Cynthia T. Tynan Douglas P. Demaster Observations and predictions of Arctic climatic change: Potential effects on marine mammals. Arctic 50(4):308 |
author_facet |
Cynthia T. Tynan Douglas P. Demaster |
author_sort |
Cynthia T. Tynan |
title |
Observations and predictions of Arctic climatic change: Potential effects on marine mammals. Arctic 50(4):308 |
title_short |
Observations and predictions of Arctic climatic change: Potential effects on marine mammals. Arctic 50(4):308 |
title_full |
Observations and predictions of Arctic climatic change: Potential effects on marine mammals. Arctic 50(4):308 |
title_fullStr |
Observations and predictions of Arctic climatic change: Potential effects on marine mammals. Arctic 50(4):308 |
title_full_unstemmed |
Observations and predictions of Arctic climatic change: Potential effects on marine mammals. Arctic 50(4):308 |
title_sort |
observations and predictions of arctic climatic change: potential effects on marine mammals. arctic 50(4):308 |
publishDate |
1997 |
url |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.572.2183 http://www.alaskasealife.org/New/Contribute/pdf/Tynan_DeMaster_1997.pdf |
geographic |
Arctic Arctic Ocean |
geographic_facet |
Arctic Arctic Ocean |
genre |
Arctic cod Arctic Arctic Ocean Beaufort Sea Boreogadus saida Climate change Sea ice |
genre_facet |
Arctic cod Arctic Arctic Ocean Beaufort Sea Boreogadus saida Climate change Sea ice |
op_source |
http://www.alaskasealife.org/New/Contribute/pdf/Tynan_DeMaster_1997.pdf |
op_relation |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.572.2183 http://www.alaskasealife.org/New/Contribute/pdf/Tynan_DeMaster_1997.pdf |
op_rights |
Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
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1766304342568075264 |