Effect of the Outflow from the Gulf of St. Lawrence on Nova Scotia Shelf Zooplankton
Significant differences in concentrations (per square metre) of the copepods Calanus glacialis and C. hyperboreus found between the northeastern (NE) and southwestern (SW) halves of the Scotian Shelf were apparently related to the Gulf of St. Lawrence outflow. This outflow introduces these species t...
Published in: | Canadian Journal of Fisheries and Aquatic Sciences |
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Language: | English |
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Canadian Science Publishing
1992
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Online Access: | http://dx.doi.org/10.1139/f92-096 http://www.nrcresearchpress.com/doi/pdf/10.1139/f92-096 |
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crcansciencepubl:10.1139/f92-096 2024-03-03T08:43:24+00:00 Effect of the Outflow from the Gulf of St. Lawrence on Nova Scotia Shelf Zooplankton Sameoto, D. D. Herman, A. W. 1992 http://dx.doi.org/10.1139/f92-096 http://www.nrcresearchpress.com/doi/pdf/10.1139/f92-096 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Canadian Journal of Fisheries and Aquatic Sciences volume 49, issue 5, page 857-869 ISSN 0706-652X 1205-7533 Aquatic Science Ecology, Evolution, Behavior and Systematics journal-article 1992 crcansciencepubl https://doi.org/10.1139/f92-096 2024-02-07T10:53:41Z Significant differences in concentrations (per square metre) of the copepods Calanus glacialis and C. hyperboreus found between the northeastern (NE) and southwestern (SW) halves of the Scotian Shelf were apparently related to the Gulf of St. Lawrence outflow. This outflow introduces these species to the Shelf during late winter and early spring and is probably responsible for maintaining their populations on the Shelf. Deep basins on the NE half of the Shelf are also sources of breeding animals of these two species. The influence of the Gulf outflow on C. finmarchicus was less clear because a large population of this species was found in the basins and beyond the Shelf break. Temora was the only other copepod genus to show a relationship with the Gulf outflow, indicating that it is carried onto the Shelf from the Gulf. The outflow dominated the surface water of the NE Shelf over the entire year; its influence was less marked on the SW Shelf due to mixing with slope water. This mixing in turn dilutes the concentrations of the Gulf Calanus spp. introduced by the Nova Scotia Current. The Gulf outflow is responsible for the high zooplankton biomass concentrations on the NE Shelf in June and October. Article in Journal/Newspaper Calanus glacialis Copepods Canadian Science Publishing Canadian Journal of Fisheries and Aquatic Sciences 49 5 857 869 |
institution |
Open Polar |
collection |
Canadian Science Publishing |
op_collection_id |
crcansciencepubl |
language |
English |
topic |
Aquatic Science Ecology, Evolution, Behavior and Systematics |
spellingShingle |
Aquatic Science Ecology, Evolution, Behavior and Systematics Sameoto, D. D. Herman, A. W. Effect of the Outflow from the Gulf of St. Lawrence on Nova Scotia Shelf Zooplankton |
topic_facet |
Aquatic Science Ecology, Evolution, Behavior and Systematics |
description |
Significant differences in concentrations (per square metre) of the copepods Calanus glacialis and C. hyperboreus found between the northeastern (NE) and southwestern (SW) halves of the Scotian Shelf were apparently related to the Gulf of St. Lawrence outflow. This outflow introduces these species to the Shelf during late winter and early spring and is probably responsible for maintaining their populations on the Shelf. Deep basins on the NE half of the Shelf are also sources of breeding animals of these two species. The influence of the Gulf outflow on C. finmarchicus was less clear because a large population of this species was found in the basins and beyond the Shelf break. Temora was the only other copepod genus to show a relationship with the Gulf outflow, indicating that it is carried onto the Shelf from the Gulf. The outflow dominated the surface water of the NE Shelf over the entire year; its influence was less marked on the SW Shelf due to mixing with slope water. This mixing in turn dilutes the concentrations of the Gulf Calanus spp. introduced by the Nova Scotia Current. The Gulf outflow is responsible for the high zooplankton biomass concentrations on the NE Shelf in June and October. |
format |
Article in Journal/Newspaper |
author |
Sameoto, D. D. Herman, A. W. |
author_facet |
Sameoto, D. D. Herman, A. W. |
author_sort |
Sameoto, D. D. |
title |
Effect of the Outflow from the Gulf of St. Lawrence on Nova Scotia Shelf Zooplankton |
title_short |
Effect of the Outflow from the Gulf of St. Lawrence on Nova Scotia Shelf Zooplankton |
title_full |
Effect of the Outflow from the Gulf of St. Lawrence on Nova Scotia Shelf Zooplankton |
title_fullStr |
Effect of the Outflow from the Gulf of St. Lawrence on Nova Scotia Shelf Zooplankton |
title_full_unstemmed |
Effect of the Outflow from the Gulf of St. Lawrence on Nova Scotia Shelf Zooplankton |
title_sort |
effect of the outflow from the gulf of st. lawrence on nova scotia shelf zooplankton |
publisher |
Canadian Science Publishing |
publishDate |
1992 |
url |
http://dx.doi.org/10.1139/f92-096 http://www.nrcresearchpress.com/doi/pdf/10.1139/f92-096 |
genre |
Calanus glacialis Copepods |
genre_facet |
Calanus glacialis Copepods |
op_source |
Canadian Journal of Fisheries and Aquatic Sciences volume 49, issue 5, page 857-869 ISSN 0706-652X 1205-7533 |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/f92-096 |
container_title |
Canadian Journal of Fisheries and Aquatic Sciences |
container_volume |
49 |
container_issue |
5 |
container_start_page |
857 |
op_container_end_page |
869 |
_version_ |
1792498830682357760 |