Multidecadal North Atlantic Climate Variability and Its Effect on North American Salmon Abundance
Climate variability is now known to play a key role in the abundance of marine fisheries, and must be accounted for to implement sustainable management strategies. We show that North American Atlantic salmon abundance has fluctuated in parallel with the Atlantic Multidecadal Oscillation (AMO); a bas...
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ftunivmassamh:oai:works.bepress.com:raymond_bradley-1023 2023-05-15T15:32:18+02:00 Multidecadal North Atlantic Climate Variability and Its Effect on North American Salmon Abundance Condron, A. DeConto, R. Bradley, Raymond S Juanes, F. 2005-01-01T08:00:00Z application/pdf https://works.bepress.com/raymond_bradley/12 https://works.bepress.com/cgi/viewcontent.cgi?article=1023&context=raymond_bradley unknown SelectedWorks https://works.bepress.com/raymond_bradley/12 https://works.bepress.com/cgi/viewcontent.cgi?article=1023&context=raymond_bradley Raymond S Bradley Earth Sciences text 2005 ftunivmassamh 2022-01-09T20:12:47Z Climate variability is now known to play a key role in the abundance of marine fisheries, and must be accounted for to implement sustainable management strategies. We show that North American Atlantic salmon abundance has fluctuated in parallel with the Atlantic Multidecadal Oscillation (AMO); a basin-wide, low frequency climate mode producing cold-warm-cold sea surface temperatures over the last century. During the AMO warm (cool) phase salmon abundance is lower (higher). Changes in sea surface temperature associated with the AMO are most pronounced in the winter season near the Grand Banks of Newfoundland, a known overwintering area for salmon and an important time for determining survival. A moratorium on salmon fishing was established in 1992, but has so far contributed few signs of improvement in stock size. This may be explained by a shift in the AMO to a positive phase, producing persistently warm temperatures in the marine environment. Our findings show that a continued warming near the Grand Banks of Newfoundland will have a detrimental impact on this already depleted stock despite the reduction in commercial fishing. Text Atlantic salmon Newfoundland North Atlantic University of Massachusetts: ScholarWorks@UMass Amherst |
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University of Massachusetts: ScholarWorks@UMass Amherst |
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Earth Sciences |
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Earth Sciences Condron, A. DeConto, R. Bradley, Raymond S Juanes, F. Multidecadal North Atlantic Climate Variability and Its Effect on North American Salmon Abundance |
topic_facet |
Earth Sciences |
description |
Climate variability is now known to play a key role in the abundance of marine fisheries, and must be accounted for to implement sustainable management strategies. We show that North American Atlantic salmon abundance has fluctuated in parallel with the Atlantic Multidecadal Oscillation (AMO); a basin-wide, low frequency climate mode producing cold-warm-cold sea surface temperatures over the last century. During the AMO warm (cool) phase salmon abundance is lower (higher). Changes in sea surface temperature associated with the AMO are most pronounced in the winter season near the Grand Banks of Newfoundland, a known overwintering area for salmon and an important time for determining survival. A moratorium on salmon fishing was established in 1992, but has so far contributed few signs of improvement in stock size. This may be explained by a shift in the AMO to a positive phase, producing persistently warm temperatures in the marine environment. Our findings show that a continued warming near the Grand Banks of Newfoundland will have a detrimental impact on this already depleted stock despite the reduction in commercial fishing. |
format |
Text |
author |
Condron, A. DeConto, R. Bradley, Raymond S Juanes, F. |
author_facet |
Condron, A. DeConto, R. Bradley, Raymond S Juanes, F. |
author_sort |
Condron, A. |
title |
Multidecadal North Atlantic Climate Variability and Its Effect on North American Salmon Abundance |
title_short |
Multidecadal North Atlantic Climate Variability and Its Effect on North American Salmon Abundance |
title_full |
Multidecadal North Atlantic Climate Variability and Its Effect on North American Salmon Abundance |
title_fullStr |
Multidecadal North Atlantic Climate Variability and Its Effect on North American Salmon Abundance |
title_full_unstemmed |
Multidecadal North Atlantic Climate Variability and Its Effect on North American Salmon Abundance |
title_sort |
multidecadal north atlantic climate variability and its effect on north american salmon abundance |
publisher |
SelectedWorks |
publishDate |
2005 |
url |
https://works.bepress.com/raymond_bradley/12 https://works.bepress.com/cgi/viewcontent.cgi?article=1023&context=raymond_bradley |
genre |
Atlantic salmon Newfoundland North Atlantic |
genre_facet |
Atlantic salmon Newfoundland North Atlantic |
op_source |
Raymond S Bradley |
op_relation |
https://works.bepress.com/raymond_bradley/12 https://works.bepress.com/cgi/viewcontent.cgi?article=1023&context=raymond_bradley |
_version_ |
1766362815384256512 |