Prehistoric versus modern Baltic Sea cod fisheries: selectivity across the millennia
Combining Stone Age and modern data provides unique insights for management, extending beyond contemporary problems and shifting baselines. Using fish chronometric parts, we compared demographic characteristics of exploited cod populations from the Neolithic Period (4500 BP) to the modern highly exp...
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ftpubmed:oai:pubmedcentral.nih.gov:2605816 2023-05-15T17:33:38+02:00 Prehistoric versus modern Baltic Sea cod fisheries: selectivity across the millennia Limburg, Karin E Walther, Yvonne Hong, Bongghi Olson, Carina Storå, Jan 2008-08-26 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2605816 http://www.ncbi.nlm.nih.gov/pubmed/18755680 https://doi.org/10.1098/rspb.2008.0711 en eng The Royal Society http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2605816 http://www.ncbi.nlm.nih.gov/pubmed/18755680 http://dx.doi.org/10.1098/rspb.2008.0711 © 2008 The Royal Society Research Article Text 2008 ftpubmed https://doi.org/10.1098/rspb.2008.0711 2013-09-02T08:58:04Z Combining Stone Age and modern data provides unique insights for management, extending beyond contemporary problems and shifting baselines. Using fish chronometric parts, we compared demographic characteristics of exploited cod populations from the Neolithic Period (4500 BP) to the modern highly exploited fishery in the central Baltic Sea. We found that Neolithic cod were larger (mean 56.4 cm, 95% confidence interval (CI)±0.9) than modern fish (weighted mean length in catch =49.5±0.2 cm in 1995, 48.2±0.2 cm in 2003), and older (mean ages =4.7±0.11, 3.1±0.02 and 3.6±0.02 years for Neolithic, 1995, and 2003 fisheries, respectively). Fishery-independent surveys in 1995 and 2003 show that mean sizes in the stock are 16–17 cm smaller than reflected in the fishery, and mean ages approximately 1–1.5 years younger. Modelled von Bertalanffy growth and back-calculated lengths indicated that Neolithic cod grew to smaller asymptotic lengths, but were larger at younger ages, implying rapid early growth. Very small Neolithic cod were absent and large individuals were rare as in modern times. This could be owing to selective harvests, the absence of small and large fish in the area or a combination. Comparing modern and prehistoric times, fishery selection is evident, but apparently not as great as in the North Atlantic proper. Text North Atlantic PubMed Central (PMC) Proceedings of the Royal Society B: Biological Sciences 275 1652 2659 2665 |
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Research Article Limburg, Karin E Walther, Yvonne Hong, Bongghi Olson, Carina Storå, Jan Prehistoric versus modern Baltic Sea cod fisheries: selectivity across the millennia |
topic_facet |
Research Article |
description |
Combining Stone Age and modern data provides unique insights for management, extending beyond contemporary problems and shifting baselines. Using fish chronometric parts, we compared demographic characteristics of exploited cod populations from the Neolithic Period (4500 BP) to the modern highly exploited fishery in the central Baltic Sea. We found that Neolithic cod were larger (mean 56.4 cm, 95% confidence interval (CI)±0.9) than modern fish (weighted mean length in catch =49.5±0.2 cm in 1995, 48.2±0.2 cm in 2003), and older (mean ages =4.7±0.11, 3.1±0.02 and 3.6±0.02 years for Neolithic, 1995, and 2003 fisheries, respectively). Fishery-independent surveys in 1995 and 2003 show that mean sizes in the stock are 16–17 cm smaller than reflected in the fishery, and mean ages approximately 1–1.5 years younger. Modelled von Bertalanffy growth and back-calculated lengths indicated that Neolithic cod grew to smaller asymptotic lengths, but were larger at younger ages, implying rapid early growth. Very small Neolithic cod were absent and large individuals were rare as in modern times. This could be owing to selective harvests, the absence of small and large fish in the area or a combination. Comparing modern and prehistoric times, fishery selection is evident, but apparently not as great as in the North Atlantic proper. |
format |
Text |
author |
Limburg, Karin E Walther, Yvonne Hong, Bongghi Olson, Carina Storå, Jan |
author_facet |
Limburg, Karin E Walther, Yvonne Hong, Bongghi Olson, Carina Storå, Jan |
author_sort |
Limburg, Karin E |
title |
Prehistoric versus modern Baltic Sea cod fisheries: selectivity across the millennia |
title_short |
Prehistoric versus modern Baltic Sea cod fisheries: selectivity across the millennia |
title_full |
Prehistoric versus modern Baltic Sea cod fisheries: selectivity across the millennia |
title_fullStr |
Prehistoric versus modern Baltic Sea cod fisheries: selectivity across the millennia |
title_full_unstemmed |
Prehistoric versus modern Baltic Sea cod fisheries: selectivity across the millennia |
title_sort |
prehistoric versus modern baltic sea cod fisheries: selectivity across the millennia |
publisher |
The Royal Society |
publishDate |
2008 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2605816 http://www.ncbi.nlm.nih.gov/pubmed/18755680 https://doi.org/10.1098/rspb.2008.0711 |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2605816 http://www.ncbi.nlm.nih.gov/pubmed/18755680 http://dx.doi.org/10.1098/rspb.2008.0711 |
op_rights |
© 2008 The Royal Society |
op_doi |
https://doi.org/10.1098/rspb.2008.0711 |
container_title |
Proceedings of the Royal Society B: Biological Sciences |
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275 |
container_issue |
1652 |
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2659 |
op_container_end_page |
2665 |
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1766132191715131392 |