Seston Ecology of the Surface Waters of Hudson Bay
The planktonic biomass variables, chlorophyll a, ATP, particulate organic carbon, and nitrogen have been measured in surface waters throughout Hudson Bay for the first time. On the basis of these variables Hudson Bay can be regarded as oligotrophc during the summer months. Clear inshore–offshore gra...
Published in: | Canadian Journal of Fisheries and Aquatic Sciences |
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Language: | French |
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Canadian Science Publishing
1980
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Online Access: | http://dx.doi.org/10.1139/f80-269 http://www.nrcresearchpress.com/doi/pdf/10.1139/f80-269 |
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crcansciencepubl:10.1139/f80-269 2023-12-17T10:26:15+01:00 Seston Ecology of the Surface Waters of Hudson Bay Anderson, J. T. Roff, J. C. 1980 http://dx.doi.org/10.1139/f80-269 http://www.nrcresearchpress.com/doi/pdf/10.1139/f80-269 fr fre Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Canadian Journal of Fisheries and Aquatic Sciences volume 37, issue 12, page 2242-2253 ISSN 0706-652X 1205-7533 Aquatic Science Ecology, Evolution, Behavior and Systematics journal-article 1980 crcansciencepubl https://doi.org/10.1139/f80-269 2023-11-19T13:38:35Z The planktonic biomass variables, chlorophyll a, ATP, particulate organic carbon, and nitrogen have been measured in surface waters throughout Hudson Bay for the first time. On the basis of these variables Hudson Bay can be regarded as oligotrophc during the summer months. Clear inshore–offshore gradients of biomass were evident showing significant correlations in transects to salinity, temperature, depth, and distance from shore. Chlorophyll a values were always low, averaging 0.09 mg m −3 offshore and 0.28 mg m −3 inshore. ATP averaged 0.072 mg m −3 offshore and twice as high inshore. Biomass ratios also demonstrated clear inshore–offshore gradients; carbon:nitrogen ratios ranged from 4.9:1 inshore to 12.5:1 offshore indicating nitrogen limitation of offshore waters. Chlorophyll a: phaeopigment ratios decreased and biocarbon:chlorophyll a ratios increased offshore indicating an increased proportion of heterotrophs and possibly higher relative grazing pressure offshore. For the inshore areas, biomass and probably productivity were highest and significantly correlated to runoff with the exception of the Southampton–Coats–Mansel islands area, which is influenced by waters from Foxe Channel and Hudson Strait. While Hudson Bay meets most of the criteria for arctic classification, its character is sufficiently different to warrant special status.Key words: Hudson Bay, seston ecology, chlorophyll a, biomass ratios, phaeopigments, plankton Article in Journal/Newspaper Arctic Foxe Channel Hudson Bay Hudson Strait Canadian Science Publishing (via Crossref) Arctic Hudson Bay Hudson Hudson Strait ENVELOPE(-70.000,-70.000,62.000,62.000) Foxe Channel ENVELOPE(-79.999,-79.999,65.001,65.001) Canadian Journal of Fisheries and Aquatic Sciences 37 12 2242 2253 |
institution |
Open Polar |
collection |
Canadian Science Publishing (via Crossref) |
op_collection_id |
crcansciencepubl |
language |
French |
topic |
Aquatic Science Ecology, Evolution, Behavior and Systematics |
spellingShingle |
Aquatic Science Ecology, Evolution, Behavior and Systematics Anderson, J. T. Roff, J. C. Seston Ecology of the Surface Waters of Hudson Bay |
topic_facet |
Aquatic Science Ecology, Evolution, Behavior and Systematics |
description |
The planktonic biomass variables, chlorophyll a, ATP, particulate organic carbon, and nitrogen have been measured in surface waters throughout Hudson Bay for the first time. On the basis of these variables Hudson Bay can be regarded as oligotrophc during the summer months. Clear inshore–offshore gradients of biomass were evident showing significant correlations in transects to salinity, temperature, depth, and distance from shore. Chlorophyll a values were always low, averaging 0.09 mg m −3 offshore and 0.28 mg m −3 inshore. ATP averaged 0.072 mg m −3 offshore and twice as high inshore. Biomass ratios also demonstrated clear inshore–offshore gradients; carbon:nitrogen ratios ranged from 4.9:1 inshore to 12.5:1 offshore indicating nitrogen limitation of offshore waters. Chlorophyll a: phaeopigment ratios decreased and biocarbon:chlorophyll a ratios increased offshore indicating an increased proportion of heterotrophs and possibly higher relative grazing pressure offshore. For the inshore areas, biomass and probably productivity were highest and significantly correlated to runoff with the exception of the Southampton–Coats–Mansel islands area, which is influenced by waters from Foxe Channel and Hudson Strait. While Hudson Bay meets most of the criteria for arctic classification, its character is sufficiently different to warrant special status.Key words: Hudson Bay, seston ecology, chlorophyll a, biomass ratios, phaeopigments, plankton |
format |
Article in Journal/Newspaper |
author |
Anderson, J. T. Roff, J. C. |
author_facet |
Anderson, J. T. Roff, J. C. |
author_sort |
Anderson, J. T. |
title |
Seston Ecology of the Surface Waters of Hudson Bay |
title_short |
Seston Ecology of the Surface Waters of Hudson Bay |
title_full |
Seston Ecology of the Surface Waters of Hudson Bay |
title_fullStr |
Seston Ecology of the Surface Waters of Hudson Bay |
title_full_unstemmed |
Seston Ecology of the Surface Waters of Hudson Bay |
title_sort |
seston ecology of the surface waters of hudson bay |
publisher |
Canadian Science Publishing |
publishDate |
1980 |
url |
http://dx.doi.org/10.1139/f80-269 http://www.nrcresearchpress.com/doi/pdf/10.1139/f80-269 |
long_lat |
ENVELOPE(-70.000,-70.000,62.000,62.000) ENVELOPE(-79.999,-79.999,65.001,65.001) |
geographic |
Arctic Hudson Bay Hudson Hudson Strait Foxe Channel |
geographic_facet |
Arctic Hudson Bay Hudson Hudson Strait Foxe Channel |
genre |
Arctic Foxe Channel Hudson Bay Hudson Strait |
genre_facet |
Arctic Foxe Channel Hudson Bay Hudson Strait |
op_source |
Canadian Journal of Fisheries and Aquatic Sciences volume 37, issue 12, page 2242-2253 ISSN 0706-652X 1205-7533 |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/f80-269 |
container_title |
Canadian Journal of Fisheries and Aquatic Sciences |
container_volume |
37 |
container_issue |
12 |
container_start_page |
2242 |
op_container_end_page |
2253 |
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1785577969578672128 |