Regional variability in the trophic requirements of shelf sea fisheries in the Northeast Atlantic, 1973–2000
Abstract Hydrographic, plankton, benthos, fisheries landings, and fish diet data from shelf sea areas in the Northeast Atlantic have been combined into an analysis of the foodweb structure and secondary production requirements of regional fisheries. Fish landings from the Baltic and North Sea are sh...
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2005
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Online Access: | http://dx.doi.org/10.1016/j.icesjms.2005.04.010 http://academic.oup.com/icesjms/article-pdf/62/7/1233/29124143/62-7-1233.pdf |
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croxfordunivpr:10.1016/j.icesjms.2005.04.010 2024-04-28T08:32:10+00:00 Regional variability in the trophic requirements of shelf sea fisheries in the Northeast Atlantic, 1973–2000 Heath, Michael R. 2005 http://dx.doi.org/10.1016/j.icesjms.2005.04.010 http://academic.oup.com/icesjms/article-pdf/62/7/1233/29124143/62-7-1233.pdf en eng Oxford University Press (OUP) ICES Journal of Marine Science volume 62, issue 7, page 1233-1244 ISSN 1095-9289 1054-3139 Ecology Aquatic Science Ecology, Evolution, Behavior and Systematics Oceanography journal-article 2005 croxfordunivpr https://doi.org/10.1016/j.icesjms.2005.04.010 2024-04-02T08:06:11Z Abstract Hydrographic, plankton, benthos, fisheries landings, and fish diet data from shelf sea areas in the Northeast Atlantic have been combined into an analysis of the foodweb structure and secondary production requirements of regional fisheries. Fish landings from the Baltic and North Sea are shown to be taken from a lower trophic level and are shown to be overall more planktivorous than those from shelf edge regions. The secondary production required per unit of landed fish from the North Sea was approximately half that for landings from the southwest approaches to the UK, referred to as the Celtic Seas, where zooplankton production accounted for only a small fraction of the secondary production demands of the fisheries. In the North Sea, variability in zooplankton production seems to have exerted a bottom-up effect on fish production, which in turn has exerted a top-down effect on the benthos. Conversely, Celtic Seas benthos production has been a bottom-up driver of fish production, which seems to have been independent of variability in plankton production. Thus, climate and fishing pressures can be expected to influence these regional fisheries in very different ways. Overall, the results indicate very strong spatial patterns in the fish foodweb structure and function, which will be important considerations in the establishment of regional management plans for fisheries. Article in Journal/Newspaper Northeast Atlantic Oxford University Press ICES Journal of Marine Science 62 7 1233 1244 |
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 Heath, Michael R. Regional variability in the trophic requirements of shelf sea fisheries in the Northeast Atlantic, 1973–2000 |
topic_facet |
Ecology Aquatic Science Ecology, Evolution, Behavior and Systematics Oceanography |
description |
Abstract Hydrographic, plankton, benthos, fisheries landings, and fish diet data from shelf sea areas in the Northeast Atlantic have been combined into an analysis of the foodweb structure and secondary production requirements of regional fisheries. Fish landings from the Baltic and North Sea are shown to be taken from a lower trophic level and are shown to be overall more planktivorous than those from shelf edge regions. The secondary production required per unit of landed fish from the North Sea was approximately half that for landings from the southwest approaches to the UK, referred to as the Celtic Seas, where zooplankton production accounted for only a small fraction of the secondary production demands of the fisheries. In the North Sea, variability in zooplankton production seems to have exerted a bottom-up effect on fish production, which in turn has exerted a top-down effect on the benthos. Conversely, Celtic Seas benthos production has been a bottom-up driver of fish production, which seems to have been independent of variability in plankton production. Thus, climate and fishing pressures can be expected to influence these regional fisheries in very different ways. Overall, the results indicate very strong spatial patterns in the fish foodweb structure and function, which will be important considerations in the establishment of regional management plans for fisheries. |
format |
Article in Journal/Newspaper |
author |
Heath, Michael R. |
author_facet |
Heath, Michael R. |
author_sort |
Heath, Michael R. |
title |
Regional variability in the trophic requirements of shelf sea fisheries in the Northeast Atlantic, 1973–2000 |
title_short |
Regional variability in the trophic requirements of shelf sea fisheries in the Northeast Atlantic, 1973–2000 |
title_full |
Regional variability in the trophic requirements of shelf sea fisheries in the Northeast Atlantic, 1973–2000 |
title_fullStr |
Regional variability in the trophic requirements of shelf sea fisheries in the Northeast Atlantic, 1973–2000 |
title_full_unstemmed |
Regional variability in the trophic requirements of shelf sea fisheries in the Northeast Atlantic, 1973–2000 |
title_sort |
regional variability in the trophic requirements of shelf sea fisheries in the northeast atlantic, 1973–2000 |
publisher |
Oxford University Press (OUP) |
publishDate |
2005 |
url |
http://dx.doi.org/10.1016/j.icesjms.2005.04.010 http://academic.oup.com/icesjms/article-pdf/62/7/1233/29124143/62-7-1233.pdf |
genre |
Northeast Atlantic |
genre_facet |
Northeast Atlantic |
op_source |
ICES Journal of Marine Science volume 62, issue 7, page 1233-1244 ISSN 1095-9289 1054-3139 |
op_doi |
https://doi.org/10.1016/j.icesjms.2005.04.010 |
container_title |
ICES Journal of Marine Science |
container_volume |
62 |
container_issue |
7 |
container_start_page |
1233 |
op_container_end_page |
1244 |
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1797589459778142208 |