The ecological impact of the Great Salinity Anomaly in the northern North‐west Atlantic

ABSTRACT In a number of recent papers Cushing has advocated that the Great Salinity Anomaly (GSA), which entered the northern North Atlantic in the early 1970s, adversely affected the recruitment of a number of deep‐water fish stocks of this ocean. Cushing envisages that a temperature anomaly accomp...

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Published in:Fisheries Oceanography
Main Authors: MERTZ, G., MYERS, R. A.
Format: Article in Journal/Newspaper
Language:English
Published: Wiley 1994
Subjects:
Online Access:http://dx.doi.org/10.1111/j.1365-2419.1994.tb00043.x
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spelling crwiley:10.1111/j.1365-2419.1994.tb00043.x 2024-06-02T08:07:25+00:00 The ecological impact of the Great Salinity Anomaly in the northern North‐west Atlantic MERTZ, G. MYERS, R. A. 1994 http://dx.doi.org/10.1111/j.1365-2419.1994.tb00043.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1365-2419.1994.tb00043.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1365-2419.1994.tb00043.x en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Fisheries Oceanography volume 3, issue 1, page 1-14 ISSN 1054-6006 1365-2419 journal-article 1994 crwiley https://doi.org/10.1111/j.1365-2419.1994.tb00043.x 2024-05-03T11:16:13Z ABSTRACT In a number of recent papers Cushing has advocated that the Great Salinity Anomaly (GSA), which entered the northern North Atlantic in the early 1970s, adversely affected the recruitment of a number of deep‐water fish stocks of this ocean. Cushing envisages that a temperature anomaly accompanying the GSA slowed and/or delayed growth in the spring phytoplankton bloom which sequentially affected zooplankton growth and fish recruitment. We test a number of hypotheses relating to Cushing's picture, focusing on the waters of the West Greenland, Labrador and Newfoundland Shelves. We find that, south of Greenland waters, there were no significant temperature anomalies corresponding to the GSA. In addition we show that stability of the shelf waters increased during the GSA, casting doubt on the contention that the phytoplankton bloom was delayed by retardation of the spring stabilization of the water column due to the influence of cold water. Our analysis indicates that the food chain coupling of environment to recruitment (climate to phytoplankton to zooplankton to fish) is not strong in the study region. Article in Journal/Newspaper Greenland Newfoundland North Atlantic North West Atlantic Wiley Online Library Newfoundland Greenland Fisheries Oceanography 3 1 1 14
institution Open Polar
collection Wiley Online Library
op_collection_id crwiley
language English
description ABSTRACT In a number of recent papers Cushing has advocated that the Great Salinity Anomaly (GSA), which entered the northern North Atlantic in the early 1970s, adversely affected the recruitment of a number of deep‐water fish stocks of this ocean. Cushing envisages that a temperature anomaly accompanying the GSA slowed and/or delayed growth in the spring phytoplankton bloom which sequentially affected zooplankton growth and fish recruitment. We test a number of hypotheses relating to Cushing's picture, focusing on the waters of the West Greenland, Labrador and Newfoundland Shelves. We find that, south of Greenland waters, there were no significant temperature anomalies corresponding to the GSA. In addition we show that stability of the shelf waters increased during the GSA, casting doubt on the contention that the phytoplankton bloom was delayed by retardation of the spring stabilization of the water column due to the influence of cold water. Our analysis indicates that the food chain coupling of environment to recruitment (climate to phytoplankton to zooplankton to fish) is not strong in the study region.
format Article in Journal/Newspaper
author MERTZ, G.
MYERS, R. A.
spellingShingle MERTZ, G.
MYERS, R. A.
The ecological impact of the Great Salinity Anomaly in the northern North‐west Atlantic
author_facet MERTZ, G.
MYERS, R. A.
author_sort MERTZ, G.
title The ecological impact of the Great Salinity Anomaly in the northern North‐west Atlantic
title_short The ecological impact of the Great Salinity Anomaly in the northern North‐west Atlantic
title_full The ecological impact of the Great Salinity Anomaly in the northern North‐west Atlantic
title_fullStr The ecological impact of the Great Salinity Anomaly in the northern North‐west Atlantic
title_full_unstemmed The ecological impact of the Great Salinity Anomaly in the northern North‐west Atlantic
title_sort ecological impact of the great salinity anomaly in the northern north‐west atlantic
publisher Wiley
publishDate 1994
url http://dx.doi.org/10.1111/j.1365-2419.1994.tb00043.x
https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1365-2419.1994.tb00043.x
https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1365-2419.1994.tb00043.x
geographic Newfoundland
Greenland
geographic_facet Newfoundland
Greenland
genre Greenland
Newfoundland
North Atlantic
North West Atlantic
genre_facet Greenland
Newfoundland
North Atlantic
North West Atlantic
op_source Fisheries Oceanography
volume 3, issue 1, page 1-14
ISSN 1054-6006 1365-2419
op_rights http://onlinelibrary.wiley.com/termsAndConditions#vor
op_doi https://doi.org/10.1111/j.1365-2419.1994.tb00043.x
container_title Fisheries Oceanography
container_volume 3
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