Reconstructing historical stock development of Atlantic cod (Gadus morhua) in the eastern Baltic Sea before the beginning of intensive exploitation
The landings of Atlantic cod ( Gadus morhua ) in the eastern Baltic Sea in the early decades of the 20th century were below 50 thousand tonnes and therefore lower than in recent years at very low stock size. These low landings have largely contributed to a perception that the stock size was also low...
Published in: | Canadian Journal of Fisheries and Aquatic Sciences |
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Canadian Science Publishing
2008
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Online Access: | http://dx.doi.org/10.1139/f08-176 http://www.nrcresearchpress.com/doi/full-xml/10.1139/F08-176 http://www.nrcresearchpress.com/doi/pdf/10.1139/F08-176 |
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crcansciencepubl:10.1139/f08-176 2023-12-17T10:26:59+01:00 Reconstructing historical stock development of Atlantic cod (Gadus morhua) in the eastern Baltic Sea before the beginning of intensive exploitation Eero, Margit Köster, Friedrich W. MacKenzie, Brian R. 2008 http://dx.doi.org/10.1139/f08-176 http://www.nrcresearchpress.com/doi/full-xml/10.1139/F08-176 http://www.nrcresearchpress.com/doi/pdf/10.1139/F08-176 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Canadian Journal of Fisheries and Aquatic Sciences volume 65, issue 12, page 2728-2741 ISSN 0706-652X 1205-7533 Aquatic Science Ecology, Evolution, Behavior and Systematics journal-article 2008 crcansciencepubl https://doi.org/10.1139/f08-176 2023-11-19T13:39:07Z The landings of Atlantic cod ( Gadus morhua ) in the eastern Baltic Sea in the early decades of the 20th century were below 50 thousand tonnes and therefore lower than in recent years at very low stock size. These low landings have largely contributed to a perception that the stock size was also low before the 1950s. In this investigation, we demonstrate that cod spawning stock biomass in the years 1925–1944 fluctuated in a similar range as in the periods from the 1950s to the mid-1970s and from the late 1980s onwards and was in most of these years at least twice as high as at present. Fishing mortality before the 1940s was below 0.2, but reached moderate levels during the Second World War. The stock size before the war may be considered as a reference level of biomass at low fishing impact, providing important information for the management of fisheries and the Baltic ecosystem. Article in Journal/Newspaper atlantic cod Gadus morhua Canadian Science Publishing (via Crossref) Canadian Journal of Fisheries and Aquatic Sciences 65 12 2728 2741 |
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 Eero, Margit Köster, Friedrich W. MacKenzie, Brian R. Reconstructing historical stock development of Atlantic cod (Gadus morhua) in the eastern Baltic Sea before the beginning of intensive exploitation |
topic_facet |
Aquatic Science Ecology, Evolution, Behavior and Systematics |
description |
The landings of Atlantic cod ( Gadus morhua ) in the eastern Baltic Sea in the early decades of the 20th century were below 50 thousand tonnes and therefore lower than in recent years at very low stock size. These low landings have largely contributed to a perception that the stock size was also low before the 1950s. In this investigation, we demonstrate that cod spawning stock biomass in the years 1925–1944 fluctuated in a similar range as in the periods from the 1950s to the mid-1970s and from the late 1980s onwards and was in most of these years at least twice as high as at present. Fishing mortality before the 1940s was below 0.2, but reached moderate levels during the Second World War. The stock size before the war may be considered as a reference level of biomass at low fishing impact, providing important information for the management of fisheries and the Baltic ecosystem. |
format |
Article in Journal/Newspaper |
author |
Eero, Margit Köster, Friedrich W. MacKenzie, Brian R. |
author_facet |
Eero, Margit Köster, Friedrich W. MacKenzie, Brian R. |
author_sort |
Eero, Margit |
title |
Reconstructing historical stock development of Atlantic cod (Gadus morhua) in the eastern Baltic Sea before the beginning of intensive exploitation |
title_short |
Reconstructing historical stock development of Atlantic cod (Gadus morhua) in the eastern Baltic Sea before the beginning of intensive exploitation |
title_full |
Reconstructing historical stock development of Atlantic cod (Gadus morhua) in the eastern Baltic Sea before the beginning of intensive exploitation |
title_fullStr |
Reconstructing historical stock development of Atlantic cod (Gadus morhua) in the eastern Baltic Sea before the beginning of intensive exploitation |
title_full_unstemmed |
Reconstructing historical stock development of Atlantic cod (Gadus morhua) in the eastern Baltic Sea before the beginning of intensive exploitation |
title_sort |
reconstructing historical stock development of atlantic cod (gadus morhua) in the eastern baltic sea before the beginning of intensive exploitation |
publisher |
Canadian Science Publishing |
publishDate |
2008 |
url |
http://dx.doi.org/10.1139/f08-176 http://www.nrcresearchpress.com/doi/full-xml/10.1139/F08-176 http://www.nrcresearchpress.com/doi/pdf/10.1139/F08-176 |
genre |
atlantic cod Gadus morhua |
genre_facet |
atlantic cod Gadus morhua |
op_source |
Canadian Journal of Fisheries and Aquatic Sciences volume 65, issue 12, page 2728-2741 ISSN 0706-652X 1205-7533 |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/f08-176 |
container_title |
Canadian Journal of Fisheries and Aquatic Sciences |
container_volume |
65 |
container_issue |
12 |
container_start_page |
2728 |
op_container_end_page |
2741 |
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1785578754613968896 |