Nutrient Flex onto the Labrador Shelf from Hudson Strait and its Biological Consequences
Fish abundance, based upon commercial fish catches and numbers offish-feeding birds, is shown to increase southward along the Labrador Shelf from Hudson Strait. Also, yearly abundance of Labrador Atlantic cod (Gadus morhua) using virtual population analysis is shown to be closely correlated with sal...
Published in: | Canadian Journal of Fisheries and Aquatic Sciences |
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Canadian Science Publishing
1983
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Online Access: | http://dx.doi.org/10.1139/f83-196 http://www.nrcresearchpress.com/doi/pdf/10.1139/f83-196 |
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crcansciencepubl:10.1139/f83-196 2023-12-17T10:27:04+01:00 Nutrient Flex onto the Labrador Shelf from Hudson Strait and its Biological Consequences Sutcliffe Jr., W. H. Loucks, R. H. Drinkwater, K. F. Coote, A. R. 1983 http://dx.doi.org/10.1139/f83-196 http://www.nrcresearchpress.com/doi/pdf/10.1139/f83-196 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Canadian Journal of Fisheries and Aquatic Sciences volume 40, issue 10, page 1692-1701 ISSN 0706-652X 1205-7533 Aquatic Science Ecology, Evolution, Behavior and Systematics journal-article 1983 crcansciencepubl https://doi.org/10.1139/f83-196 2023-11-19T13:39:01Z Fish abundance, based upon commercial fish catches and numbers offish-feeding birds, is shown to increase southward along the Labrador Shelf from Hudson Strait. Also, yearly abundance of Labrador Atlantic cod (Gadus morhua) using virtual population analysis is shown to be closely correlated with salinity changes at Station 27 off St. John's, Newfoundland. We suggest these observations are related to physical oceanographic events originating within Hudson Strait. Analysis of available data indicates nutrient enrichment of the surface waters through physical mixing in Hudson Strait. These waters are carried by the residual circulation onto the northern Labrador Shelf. Our interpretation of the southward increase in fish abundance is that fish production develops downstream of the area of nutrient injection due to the southward flow of the Labrador Current coupled with the time required for food chain development. The yearly variation of cod is interpreted as arising from the variation of the nutrient supply, which is itself correlated with salinity. The fresh water discharge into Hudson Bay which eventually flows out through Hudson Strait and onto the Labrador Shelf appears to suppress mixing and hence years of higher discharge would tend to decrease the nutrient supply. Article in Journal/Newspaper atlantic cod Gadus morhua Hudson Bay Hudson Strait Newfoundland Canadian Science Publishing (via Crossref) Newfoundland Hudson Bay Hudson Hudson Strait ENVELOPE(-70.000,-70.000,62.000,62.000) Labrador Shelf ENVELOPE(-58.000,-58.000,56.000,56.000) Canadian Journal of Fisheries and Aquatic Sciences 40 10 1692 1701 |
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Open Polar |
collection |
Canadian Science Publishing (via Crossref) |
op_collection_id |
crcansciencepubl |
language |
English |
topic |
Aquatic Science Ecology, Evolution, Behavior and Systematics |
spellingShingle |
Aquatic Science Ecology, Evolution, Behavior and Systematics Sutcliffe Jr., W. H. Loucks, R. H. Drinkwater, K. F. Coote, A. R. Nutrient Flex onto the Labrador Shelf from Hudson Strait and its Biological Consequences |
topic_facet |
Aquatic Science Ecology, Evolution, Behavior and Systematics |
description |
Fish abundance, based upon commercial fish catches and numbers offish-feeding birds, is shown to increase southward along the Labrador Shelf from Hudson Strait. Also, yearly abundance of Labrador Atlantic cod (Gadus morhua) using virtual population analysis is shown to be closely correlated with salinity changes at Station 27 off St. John's, Newfoundland. We suggest these observations are related to physical oceanographic events originating within Hudson Strait. Analysis of available data indicates nutrient enrichment of the surface waters through physical mixing in Hudson Strait. These waters are carried by the residual circulation onto the northern Labrador Shelf. Our interpretation of the southward increase in fish abundance is that fish production develops downstream of the area of nutrient injection due to the southward flow of the Labrador Current coupled with the time required for food chain development. The yearly variation of cod is interpreted as arising from the variation of the nutrient supply, which is itself correlated with salinity. The fresh water discharge into Hudson Bay which eventually flows out through Hudson Strait and onto the Labrador Shelf appears to suppress mixing and hence years of higher discharge would tend to decrease the nutrient supply. |
format |
Article in Journal/Newspaper |
author |
Sutcliffe Jr., W. H. Loucks, R. H. Drinkwater, K. F. Coote, A. R. |
author_facet |
Sutcliffe Jr., W. H. Loucks, R. H. Drinkwater, K. F. Coote, A. R. |
author_sort |
Sutcliffe Jr., W. H. |
title |
Nutrient Flex onto the Labrador Shelf from Hudson Strait and its Biological Consequences |
title_short |
Nutrient Flex onto the Labrador Shelf from Hudson Strait and its Biological Consequences |
title_full |
Nutrient Flex onto the Labrador Shelf from Hudson Strait and its Biological Consequences |
title_fullStr |
Nutrient Flex onto the Labrador Shelf from Hudson Strait and its Biological Consequences |
title_full_unstemmed |
Nutrient Flex onto the Labrador Shelf from Hudson Strait and its Biological Consequences |
title_sort |
nutrient flex onto the labrador shelf from hudson strait and its biological consequences |
publisher |
Canadian Science Publishing |
publishDate |
1983 |
url |
http://dx.doi.org/10.1139/f83-196 http://www.nrcresearchpress.com/doi/pdf/10.1139/f83-196 |
long_lat |
ENVELOPE(-70.000,-70.000,62.000,62.000) ENVELOPE(-58.000,-58.000,56.000,56.000) |
geographic |
Newfoundland Hudson Bay Hudson Hudson Strait Labrador Shelf |
geographic_facet |
Newfoundland Hudson Bay Hudson Hudson Strait Labrador Shelf |
genre |
atlantic cod Gadus morhua Hudson Bay Hudson Strait Newfoundland |
genre_facet |
atlantic cod Gadus morhua Hudson Bay Hudson Strait Newfoundland |
op_source |
Canadian Journal of Fisheries and Aquatic Sciences volume 40, issue 10, page 1692-1701 ISSN 0706-652X 1205-7533 |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/f83-196 |
container_title |
Canadian Journal of Fisheries and Aquatic Sciences |
container_volume |
40 |
container_issue |
10 |
container_start_page |
1692 |
op_container_end_page |
1701 |
_version_ |
1785578845686988800 |