Herring as a major consumer in the Norwegian Sea
Abstract Using available information, the authors attempt to calculate the food consumption of the Norwegian Spring Spawning Herring in the Norwegian Sea in the years 1994–1996, and to calculate how much is taken of different prey organisms. Consumption/biomass ratios extracted from literature vary...
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Language: | English |
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Oxford University Press (OUP)
2004
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Online Access: | http://dx.doi.org/10.1016/j.icesjms.2004.04.001 http://academic.oup.com/icesjms/article-pdf/61/5/739/29121849/61-5-739.pdf |
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croxfordunivpr:10.1016/j.icesjms.2004.04.001 2024-03-03T08:42:13+00:00 Herring as a major consumer in the Norwegian Sea Dommasnes, Are Melle, Webjørn Dalpadado, Padmini Ellertsen, Bjørnar 2004 http://dx.doi.org/10.1016/j.icesjms.2004.04.001 http://academic.oup.com/icesjms/article-pdf/61/5/739/29121849/61-5-739.pdf en eng Oxford University Press (OUP) ICES Journal of Marine Science volume 61, issue 5, page 739-751 ISSN 1095-9289 1054-3139 Ecology Aquatic Science Ecology, Evolution, Behavior and Systematics Oceanography journal-article 2004 croxfordunivpr https://doi.org/10.1016/j.icesjms.2004.04.001 2024-02-05T10:32:41Z Abstract Using available information, the authors attempt to calculate the food consumption of the Norwegian Spring Spawning Herring in the Norwegian Sea in the years 1994–1996, and to calculate how much is taken of different prey organisms. Consumption/biomass ratios extracted from literature vary within the range 3.0–7.0. Based on the likely size of the herring stock in the Norwegian Sea and an annual consumption/biomass ratio of 4.5, the consumption in 1994, 1995, and 1996 was calculated to be 31, 40, and 47 million tonnes, respectively. Quantitative data are presented on the presence of different prey categories in herring stomachs in different water masses (Coastal, Coastal/Atlantic, Atlantic, and Atlantic/Arctic, respectively), and the results are used to estimate total consumption of the different prey categories by herring. Based on a consumption/biomass ratio of 4.5, the consumption of copepods in 1994, 1995, and 1996 was calculated to be 19, 24, and 29 million tonnes, respectively, making up 62% of the food consumed as a mean over the 3 years. Corresponding numbers for krill were 1.2, 3.3, and 1.8 million tonnes and 5%, and for amphipods 3.3, 5.2, and 6.6 million tonnes and 13%. The results are compared with the assumed production by the different prey organisms in the areas where the herring feed. For copepods it seems that the consumption by herring is at the same level as the production, but for other prey organisms the production seems to exceed consumption by herring. Article in Journal/Newspaper Arctic Atlantic Arctic Atlantic-Arctic Norwegian Sea Copepods Oxford University Press Arctic Norwegian Sea ICES Journal of Marine Science 61 5 739 751 |
institution |
Open Polar |
collection |
Oxford University Press |
op_collection_id |
croxfordunivpr |
language |
English |
topic |
Ecology Aquatic Science Ecology, Evolution, Behavior and Systematics Oceanography |
spellingShingle |
Ecology Aquatic Science Ecology, Evolution, Behavior and Systematics Oceanography Dommasnes, Are Melle, Webjørn Dalpadado, Padmini Ellertsen, Bjørnar Herring as a major consumer in the Norwegian Sea |
topic_facet |
Ecology Aquatic Science Ecology, Evolution, Behavior and Systematics Oceanography |
description |
Abstract Using available information, the authors attempt to calculate the food consumption of the Norwegian Spring Spawning Herring in the Norwegian Sea in the years 1994–1996, and to calculate how much is taken of different prey organisms. Consumption/biomass ratios extracted from literature vary within the range 3.0–7.0. Based on the likely size of the herring stock in the Norwegian Sea and an annual consumption/biomass ratio of 4.5, the consumption in 1994, 1995, and 1996 was calculated to be 31, 40, and 47 million tonnes, respectively. Quantitative data are presented on the presence of different prey categories in herring stomachs in different water masses (Coastal, Coastal/Atlantic, Atlantic, and Atlantic/Arctic, respectively), and the results are used to estimate total consumption of the different prey categories by herring. Based on a consumption/biomass ratio of 4.5, the consumption of copepods in 1994, 1995, and 1996 was calculated to be 19, 24, and 29 million tonnes, respectively, making up 62% of the food consumed as a mean over the 3 years. Corresponding numbers for krill were 1.2, 3.3, and 1.8 million tonnes and 5%, and for amphipods 3.3, 5.2, and 6.6 million tonnes and 13%. The results are compared with the assumed production by the different prey organisms in the areas where the herring feed. For copepods it seems that the consumption by herring is at the same level as the production, but for other prey organisms the production seems to exceed consumption by herring. |
format |
Article in Journal/Newspaper |
author |
Dommasnes, Are Melle, Webjørn Dalpadado, Padmini Ellertsen, Bjørnar |
author_facet |
Dommasnes, Are Melle, Webjørn Dalpadado, Padmini Ellertsen, Bjørnar |
author_sort |
Dommasnes, Are |
title |
Herring as a major consumer in the Norwegian Sea |
title_short |
Herring as a major consumer in the Norwegian Sea |
title_full |
Herring as a major consumer in the Norwegian Sea |
title_fullStr |
Herring as a major consumer in the Norwegian Sea |
title_full_unstemmed |
Herring as a major consumer in the Norwegian Sea |
title_sort |
herring as a major consumer in the norwegian sea |
publisher |
Oxford University Press (OUP) |
publishDate |
2004 |
url |
http://dx.doi.org/10.1016/j.icesjms.2004.04.001 http://academic.oup.com/icesjms/article-pdf/61/5/739/29121849/61-5-739.pdf |
geographic |
Arctic Norwegian Sea |
geographic_facet |
Arctic Norwegian Sea |
genre |
Arctic Atlantic Arctic Atlantic-Arctic Norwegian Sea Copepods |
genre_facet |
Arctic Atlantic Arctic Atlantic-Arctic Norwegian Sea Copepods |
op_source |
ICES Journal of Marine Science volume 61, issue 5, page 739-751 ISSN 1095-9289 1054-3139 |
op_doi |
https://doi.org/10.1016/j.icesjms.2004.04.001 |
container_title |
ICES Journal of Marine Science |
container_volume |
61 |
container_issue |
5 |
container_start_page |
739 |
op_container_end_page |
751 |
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1792497671580155904 |