Discontinuous change in ice cover in Hudson Bay in the 1990s and some consequences for marine birds and their prey
Abstract Gaston A. J., Smith, P. A., and Provencher, J. F. 2012. Discontinuous change in ice cover in Hudson Bay in the 1990s and some consequences for marine birds and their prey. – ICES Journal of Marine Science, 69: . Arctic ice cover has changed strikingly since the mid-1990s, with the minimum i...
Published in: | ICES Journal of Marine Science |
---|---|
Main Authors: | , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Oxford University Press (OUP)
2012
|
Subjects: | |
Online Access: | http://dx.doi.org/10.1093/icesjms/fss040 http://academic.oup.com/icesjms/article-pdf/69/7/1218/29144161/fss040.pdf |
id |
croxfordunivpr:10.1093/icesjms/fss040 |
---|---|
record_format |
openpolar |
spelling |
croxfordunivpr:10.1093/icesjms/fss040 2024-06-23T07:48:56+00:00 Discontinuous change in ice cover in Hudson Bay in the 1990s and some consequences for marine birds and their prey Gaston, Anthony J. Smith, Paul A. Provencher, Jennifer F. 2012 http://dx.doi.org/10.1093/icesjms/fss040 http://academic.oup.com/icesjms/article-pdf/69/7/1218/29144161/fss040.pdf en eng Oxford University Press (OUP) ICES Journal of Marine Science volume 69, issue 7, page 1218-1225 ISSN 1095-9289 1054-3139 journal-article 2012 croxfordunivpr https://doi.org/10.1093/icesjms/fss040 2024-06-04T06:09:29Z Abstract Gaston A. J., Smith, P. A., and Provencher, J. F. 2012. Discontinuous change in ice cover in Hudson Bay in the 1990s and some consequences for marine birds and their prey. – ICES Journal of Marine Science, 69: . Arctic ice cover has changed strikingly since the mid-1990s, with the minimum ice extent in the northern hemisphere diminishing by 8.5% per decade since 1981. In the Canadian Arctic, ice cover in June and November showed a step change in the mid-1990s, with little reduction before that. There was a similar step change in northern Hudson Bay. A long-term dataset on marine birds at Coats Island, Nunavut, revealed that many changes in seabird biology also exhibited an abrupt change at, or soon after, the change in ice conditions. This applied to their diet that switched in the 1990s from one dominated by Arctic cod, Boreogadus saida, to one dominated by capelin, Mallotus villosus. Evidence from the proportion of Arctic cod in adult diets suggested that the length of the open-water season may be a good predictor of the switch between Arctic cod and capelin. Other changes, in nestling growth and population trend, may relate to the same ecosystem changes that led to the switch in diet. Abrupt changes, as in the breeding biology of murres at Coats Island, would seem to be characteristic of ecosystem alterations driven by climate change. Article in Journal/Newspaper Arctic cod Arctic Boreogadus saida Climate change Coats Island Hudson Bay Nunavut Oxford University Press Arctic Coats Island ENVELOPE(-82.974,-82.974,62.620,62.620) Gaston ENVELOPE(65.783,65.783,-70.417,-70.417) Hudson Hudson Bay Nunavut ICES Journal of Marine Science 69 7 1218 1225 |
institution |
Open Polar |
collection |
Oxford University Press |
op_collection_id |
croxfordunivpr |
language |
English |
description |
Abstract Gaston A. J., Smith, P. A., and Provencher, J. F. 2012. Discontinuous change in ice cover in Hudson Bay in the 1990s and some consequences for marine birds and their prey. – ICES Journal of Marine Science, 69: . Arctic ice cover has changed strikingly since the mid-1990s, with the minimum ice extent in the northern hemisphere diminishing by 8.5% per decade since 1981. In the Canadian Arctic, ice cover in June and November showed a step change in the mid-1990s, with little reduction before that. There was a similar step change in northern Hudson Bay. A long-term dataset on marine birds at Coats Island, Nunavut, revealed that many changes in seabird biology also exhibited an abrupt change at, or soon after, the change in ice conditions. This applied to their diet that switched in the 1990s from one dominated by Arctic cod, Boreogadus saida, to one dominated by capelin, Mallotus villosus. Evidence from the proportion of Arctic cod in adult diets suggested that the length of the open-water season may be a good predictor of the switch between Arctic cod and capelin. Other changes, in nestling growth and population trend, may relate to the same ecosystem changes that led to the switch in diet. Abrupt changes, as in the breeding biology of murres at Coats Island, would seem to be characteristic of ecosystem alterations driven by climate change. |
format |
Article in Journal/Newspaper |
author |
Gaston, Anthony J. Smith, Paul A. Provencher, Jennifer F. |
spellingShingle |
Gaston, Anthony J. Smith, Paul A. Provencher, Jennifer F. Discontinuous change in ice cover in Hudson Bay in the 1990s and some consequences for marine birds and their prey |
author_facet |
Gaston, Anthony J. Smith, Paul A. Provencher, Jennifer F. |
author_sort |
Gaston, Anthony J. |
title |
Discontinuous change in ice cover in Hudson Bay in the 1990s and some consequences for marine birds and their prey |
title_short |
Discontinuous change in ice cover in Hudson Bay in the 1990s and some consequences for marine birds and their prey |
title_full |
Discontinuous change in ice cover in Hudson Bay in the 1990s and some consequences for marine birds and their prey |
title_fullStr |
Discontinuous change in ice cover in Hudson Bay in the 1990s and some consequences for marine birds and their prey |
title_full_unstemmed |
Discontinuous change in ice cover in Hudson Bay in the 1990s and some consequences for marine birds and their prey |
title_sort |
discontinuous change in ice cover in hudson bay in the 1990s and some consequences for marine birds and their prey |
publisher |
Oxford University Press (OUP) |
publishDate |
2012 |
url |
http://dx.doi.org/10.1093/icesjms/fss040 http://academic.oup.com/icesjms/article-pdf/69/7/1218/29144161/fss040.pdf |
long_lat |
ENVELOPE(-82.974,-82.974,62.620,62.620) ENVELOPE(65.783,65.783,-70.417,-70.417) |
geographic |
Arctic Coats Island Gaston Hudson Hudson Bay Nunavut |
geographic_facet |
Arctic Coats Island Gaston Hudson Hudson Bay Nunavut |
genre |
Arctic cod Arctic Boreogadus saida Climate change Coats Island Hudson Bay Nunavut |
genre_facet |
Arctic cod Arctic Boreogadus saida Climate change Coats Island Hudson Bay Nunavut |
op_source |
ICES Journal of Marine Science volume 69, issue 7, page 1218-1225 ISSN 1095-9289 1054-3139 |
op_doi |
https://doi.org/10.1093/icesjms/fss040 |
container_title |
ICES Journal of Marine Science |
container_volume |
69 |
container_issue |
7 |
container_start_page |
1218 |
op_container_end_page |
1225 |
_version_ |
1802639245849919488 |