Escapement of eel (Anguilla anguilla) in coastal areas in Sweden over a 50-year period
Abstract Andersson, J., Florin, A.-B., and Petersson, E. 2012. Escapement of eel (Anguilla anguilla) in coastal areas in Sweden over a 50-year period – ICES Journal of Marine Science, 69: 991–999. The escapement of eel from coastal areas in Sweden during the last 50 years was assessed using data fro...
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Language: | English |
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Online Access: | http://dx.doi.org/10.1093/icesjms/fss094 http://academic.oup.com/icesjms/article-pdf/69/6/991/29145860/fss094.pdf |
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croxfordunivpr:10.1093/icesjms/fss094 2024-06-23T07:45:32+00:00 Escapement of eel (Anguilla anguilla) in coastal areas in Sweden over a 50-year period Andersson, Jan Florin, Ann-Britt Petersson, Erik 2012 http://dx.doi.org/10.1093/icesjms/fss094 http://academic.oup.com/icesjms/article-pdf/69/6/991/29145860/fss094.pdf en eng Oxford University Press (OUP) ICES Journal of Marine Science volume 69, issue 6, page 991-999 ISSN 1095-9289 1054-3139 journal-article 2012 croxfordunivpr https://doi.org/10.1093/icesjms/fss094 2024-06-04T06:12:13Z Abstract Andersson, J., Florin, A.-B., and Petersson, E. 2012. Escapement of eel (Anguilla anguilla) in coastal areas in Sweden over a 50-year period – ICES Journal of Marine Science, 69: 991–999. The escapement of eel from coastal areas in Sweden during the last 50 years was assessed using data from voluntary fishery journals and fishery-independent coastal fish monitoring programmes. It was evident that the level of escapement, determined as catch per unit of effort in numbers, from the Baltic Sea decreased over time, with the most rapid decline occurring in the 1960s and early 1970s, but also in recent years. There were, however, differences in the temporal variability in escapement between areas. Escapement from the northernmost studied site did not change significantly during the last 50 years, while there was a rapid decline in the southern areas. Escapement remained relatively stable between the late 1970s and 2000 however, and escapement at the Swedish west coast, inferred from yellow eel catch per unit of effort, generally increased during the same time. The loss in numbers has to some extent been compensated by an increase in mean weight of silver eel. Possible explanations for the retained level of escapement during the last decades despite the continued reduction in recruitment are discussed. Favourable environmental conditions in combination with a lower fishing effort are suggested as the most probable reasons why the escapement decline has not been more dramatic, but stocking and density-dependent effects cannot be ruled out. Article in Journal/Newspaper Anguilla anguilla Oxford University Press ICES Journal of Marine Science 69 6 991 999 |
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description |
Abstract Andersson, J., Florin, A.-B., and Petersson, E. 2012. Escapement of eel (Anguilla anguilla) in coastal areas in Sweden over a 50-year period – ICES Journal of Marine Science, 69: 991–999. The escapement of eel from coastal areas in Sweden during the last 50 years was assessed using data from voluntary fishery journals and fishery-independent coastal fish monitoring programmes. It was evident that the level of escapement, determined as catch per unit of effort in numbers, from the Baltic Sea decreased over time, with the most rapid decline occurring in the 1960s and early 1970s, but also in recent years. There were, however, differences in the temporal variability in escapement between areas. Escapement from the northernmost studied site did not change significantly during the last 50 years, while there was a rapid decline in the southern areas. Escapement remained relatively stable between the late 1970s and 2000 however, and escapement at the Swedish west coast, inferred from yellow eel catch per unit of effort, generally increased during the same time. The loss in numbers has to some extent been compensated by an increase in mean weight of silver eel. Possible explanations for the retained level of escapement during the last decades despite the continued reduction in recruitment are discussed. Favourable environmental conditions in combination with a lower fishing effort are suggested as the most probable reasons why the escapement decline has not been more dramatic, but stocking and density-dependent effects cannot be ruled out. |
format |
Article in Journal/Newspaper |
author |
Andersson, Jan Florin, Ann-Britt Petersson, Erik |
spellingShingle |
Andersson, Jan Florin, Ann-Britt Petersson, Erik Escapement of eel (Anguilla anguilla) in coastal areas in Sweden over a 50-year period |
author_facet |
Andersson, Jan Florin, Ann-Britt Petersson, Erik |
author_sort |
Andersson, Jan |
title |
Escapement of eel (Anguilla anguilla) in coastal areas in Sweden over a 50-year period |
title_short |
Escapement of eel (Anguilla anguilla) in coastal areas in Sweden over a 50-year period |
title_full |
Escapement of eel (Anguilla anguilla) in coastal areas in Sweden over a 50-year period |
title_fullStr |
Escapement of eel (Anguilla anguilla) in coastal areas in Sweden over a 50-year period |
title_full_unstemmed |
Escapement of eel (Anguilla anguilla) in coastal areas in Sweden over a 50-year period |
title_sort |
escapement of eel (anguilla anguilla) in coastal areas in sweden over a 50-year period |
publisher |
Oxford University Press (OUP) |
publishDate |
2012 |
url |
http://dx.doi.org/10.1093/icesjms/fss094 http://academic.oup.com/icesjms/article-pdf/69/6/991/29145860/fss094.pdf |
genre |
Anguilla anguilla |
genre_facet |
Anguilla anguilla |
op_source |
ICES Journal of Marine Science volume 69, issue 6, page 991-999 ISSN 1095-9289 1054-3139 |
op_doi |
https://doi.org/10.1093/icesjms/fss094 |
container_title |
ICES Journal of Marine Science |
container_volume |
69 |
container_issue |
6 |
container_start_page |
991 |
op_container_end_page |
999 |
_version_ |
1802640540160753664 |