Structure and Interannual Variability of the Plankton and its Environment off Southwest Nova Scotia in Late Spring and Early Summer
Consistent alongshore and/or onshore–offshore gradients in temperature, salinity, and inorganic nutrient were observed off southwest Nova Scotia in June/July, 1981–85. The distributions were established primarily by mixing of relatively warm, high-salinity, nutrient-rich Slope Water with the cold, l...
Published in: | Canadian Journal of Fisheries and Aquatic Sciences |
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1989
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crcansciencepubl:10.1139/f89-277 2023-12-17T10:27:04+01:00 Structure and Interannual Variability of the Plankton and its Environment off Southwest Nova Scotia in Late Spring and Early Summer Koslow, J. Anthony Perry, R. Ian Hurley, Peter C. F. Fournier, Robert O. 1989 http://dx.doi.org/10.1139/f89-277 http://www.nrcresearchpress.com/doi/pdf/10.1139/f89-277 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Canadian Journal of Fisheries and Aquatic Sciences volume 46, issue S1, page s44-s54 ISSN 0706-652X 1205-7533 Aquatic Science Ecology, Evolution, Behavior and Systematics journal-article 1989 crcansciencepubl https://doi.org/10.1139/f89-277 2023-11-19T13:38:44Z Consistent alongshore and/or onshore–offshore gradients in temperature, salinity, and inorganic nutrient were observed off southwest Nova Scotia in June/July, 1981–85. The distributions were established primarily by mixing of relatively warm, high-salinity, nutrient-rich Slope Water with the cold, low-salinity, nutrient-poor water of the Nova Scotia Current. Tidal mixing and frontal dynamics were of secondary importance. Consistent with the distribution of nutrient and the earlier onset of stratification offshore, chlorophyll a concentrations were generally highest offshore and lowest inshore, and the distributions of Zooplankton displacement volume and of dominant copepod species were similar. Salinity, nutrient, and chlorophyll a concentrations and the abundance of zoo-plankton were all generally higher throughout the spring of 1985 than in 1983–84. In 1985, there was greater upwelling and Slope Water influence and decreased flow of the shelf current. This was associated with a reversal of the North Atlantic atmospheric pressure anomaly field, which led to predominantly offshore and southwest alongshore winds in winter and spring, 1985. Correlations of recruitment to northwest Atlantic cod (Gadus morhua) stocks with wind and North Atlantic atmospheric pressure anomalies (Koslow et al. 1987) may be based upon the wind's influence on nutrient availability and plankton abundance. Article in Journal/Newspaper atlantic cod Gadus morhua North Atlantic Northwest Atlantic Canadian Science Publishing (via Crossref) Canadian Journal of Fisheries and Aquatic Sciences 46 S1 s44 s54 |
institution |
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 Koslow, J. Anthony Perry, R. Ian Hurley, Peter C. F. Fournier, Robert O. Structure and Interannual Variability of the Plankton and its Environment off Southwest Nova Scotia in Late Spring and Early Summer |
topic_facet |
Aquatic Science Ecology, Evolution, Behavior and Systematics |
description |
Consistent alongshore and/or onshore–offshore gradients in temperature, salinity, and inorganic nutrient were observed off southwest Nova Scotia in June/July, 1981–85. The distributions were established primarily by mixing of relatively warm, high-salinity, nutrient-rich Slope Water with the cold, low-salinity, nutrient-poor water of the Nova Scotia Current. Tidal mixing and frontal dynamics were of secondary importance. Consistent with the distribution of nutrient and the earlier onset of stratification offshore, chlorophyll a concentrations were generally highest offshore and lowest inshore, and the distributions of Zooplankton displacement volume and of dominant copepod species were similar. Salinity, nutrient, and chlorophyll a concentrations and the abundance of zoo-plankton were all generally higher throughout the spring of 1985 than in 1983–84. In 1985, there was greater upwelling and Slope Water influence and decreased flow of the shelf current. This was associated with a reversal of the North Atlantic atmospheric pressure anomaly field, which led to predominantly offshore and southwest alongshore winds in winter and spring, 1985. Correlations of recruitment to northwest Atlantic cod (Gadus morhua) stocks with wind and North Atlantic atmospheric pressure anomalies (Koslow et al. 1987) may be based upon the wind's influence on nutrient availability and plankton abundance. |
format |
Article in Journal/Newspaper |
author |
Koslow, J. Anthony Perry, R. Ian Hurley, Peter C. F. Fournier, Robert O. |
author_facet |
Koslow, J. Anthony Perry, R. Ian Hurley, Peter C. F. Fournier, Robert O. |
author_sort |
Koslow, J. Anthony |
title |
Structure and Interannual Variability of the Plankton and its Environment off Southwest Nova Scotia in Late Spring and Early Summer |
title_short |
Structure and Interannual Variability of the Plankton and its Environment off Southwest Nova Scotia in Late Spring and Early Summer |
title_full |
Structure and Interannual Variability of the Plankton and its Environment off Southwest Nova Scotia in Late Spring and Early Summer |
title_fullStr |
Structure and Interannual Variability of the Plankton and its Environment off Southwest Nova Scotia in Late Spring and Early Summer |
title_full_unstemmed |
Structure and Interannual Variability of the Plankton and its Environment off Southwest Nova Scotia in Late Spring and Early Summer |
title_sort |
structure and interannual variability of the plankton and its environment off southwest nova scotia in late spring and early summer |
publisher |
Canadian Science Publishing |
publishDate |
1989 |
url |
http://dx.doi.org/10.1139/f89-277 http://www.nrcresearchpress.com/doi/pdf/10.1139/f89-277 |
genre |
atlantic cod Gadus morhua North Atlantic Northwest Atlantic |
genre_facet |
atlantic cod Gadus morhua North Atlantic Northwest Atlantic |
op_source |
Canadian Journal of Fisheries and Aquatic Sciences volume 46, issue S1, page s44-s54 ISSN 0706-652X 1205-7533 |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/f89-277 |
container_title |
Canadian Journal of Fisheries and Aquatic Sciences |
container_volume |
46 |
container_issue |
S1 |
container_start_page |
s44 |
op_container_end_page |
s54 |
_version_ |
1785578847104663552 |