Estimation of Atlantic salmon smolt carrying capacity of rivers using expert knowledge
Abstract A mixed salmon fishery with both natural wild salmon stocks and reared salmon exists in the Baltic Sea. The agreed-upon goal of management is to safeguard the wild stocks, and the practical management objectives have been agreed to attain at least a 50% maximum salmon production capacity in...
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Oxford University Press (OUP)
2005
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Online Access: | http://dx.doi.org/10.1016/j.icesjms.2005.02.005 http://academic.oup.com/icesjms/article-pdf/62/4/708/29150960/62-4-708.pdf |
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croxfordunivpr:10.1016/j.icesjms.2005.02.005 2024-09-30T14:32:31+00:00 Estimation of Atlantic salmon smolt carrying capacity of rivers using expert knowledge Uusitalo, Laura Kuikka, Sakari Romakkaniemi, Atso 2005 http://dx.doi.org/10.1016/j.icesjms.2005.02.005 http://academic.oup.com/icesjms/article-pdf/62/4/708/29150960/62-4-708.pdf en eng Oxford University Press (OUP) ICES Journal of Marine Science volume 62, issue 4, page 708-722 ISSN 1095-9289 1054-3139 journal-article 2005 croxfordunivpr https://doi.org/10.1016/j.icesjms.2005.02.005 2024-09-17T04:32:23Z Abstract A mixed salmon fishery with both natural wild salmon stocks and reared salmon exists in the Baltic Sea. The agreed-upon goal of management is to safeguard the wild stocks, and the practical management objectives have been agreed to attain at least a 50% maximum salmon production capacity in each river. This natural production capacity is, however, largely unknown. Here, a new approach has been used to estimate the salmon maximum production capacity of northern Baltic Sea rivers. A probabilistic salmon production capacity model was built entirely upon expert knowledge. The model describes the external physical and biological factors of the rivers and the juvenile salmon stocks' response to these factors. We found that the experts estimated the carrying capacity to be considerably higher than former estimates. A very high uncertainty was, however, connected with these estimates. We also found considerable disagreement over the general carrying capacity level among the experts; the major uncertainty emerged from the conflicting views of the experts. The result implies that perhaps operational management objectives other than those based on maximal smolt production levels should be considered to decrease the uncertainty connected with evaluation of management success. Article in Journal/Newspaper Atlantic salmon Oxford University Press ICES Journal of Marine Science 62 4 708 722 |
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Open Polar |
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Oxford University Press |
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croxfordunivpr |
language |
English |
description |
Abstract A mixed salmon fishery with both natural wild salmon stocks and reared salmon exists in the Baltic Sea. The agreed-upon goal of management is to safeguard the wild stocks, and the practical management objectives have been agreed to attain at least a 50% maximum salmon production capacity in each river. This natural production capacity is, however, largely unknown. Here, a new approach has been used to estimate the salmon maximum production capacity of northern Baltic Sea rivers. A probabilistic salmon production capacity model was built entirely upon expert knowledge. The model describes the external physical and biological factors of the rivers and the juvenile salmon stocks' response to these factors. We found that the experts estimated the carrying capacity to be considerably higher than former estimates. A very high uncertainty was, however, connected with these estimates. We also found considerable disagreement over the general carrying capacity level among the experts; the major uncertainty emerged from the conflicting views of the experts. The result implies that perhaps operational management objectives other than those based on maximal smolt production levels should be considered to decrease the uncertainty connected with evaluation of management success. |
format |
Article in Journal/Newspaper |
author |
Uusitalo, Laura Kuikka, Sakari Romakkaniemi, Atso |
spellingShingle |
Uusitalo, Laura Kuikka, Sakari Romakkaniemi, Atso Estimation of Atlantic salmon smolt carrying capacity of rivers using expert knowledge |
author_facet |
Uusitalo, Laura Kuikka, Sakari Romakkaniemi, Atso |
author_sort |
Uusitalo, Laura |
title |
Estimation of Atlantic salmon smolt carrying capacity of rivers using expert knowledge |
title_short |
Estimation of Atlantic salmon smolt carrying capacity of rivers using expert knowledge |
title_full |
Estimation of Atlantic salmon smolt carrying capacity of rivers using expert knowledge |
title_fullStr |
Estimation of Atlantic salmon smolt carrying capacity of rivers using expert knowledge |
title_full_unstemmed |
Estimation of Atlantic salmon smolt carrying capacity of rivers using expert knowledge |
title_sort |
estimation of atlantic salmon smolt carrying capacity of rivers using expert knowledge |
publisher |
Oxford University Press (OUP) |
publishDate |
2005 |
url |
http://dx.doi.org/10.1016/j.icesjms.2005.02.005 http://academic.oup.com/icesjms/article-pdf/62/4/708/29150960/62-4-708.pdf |
genre |
Atlantic salmon |
genre_facet |
Atlantic salmon |
op_source |
ICES Journal of Marine Science volume 62, issue 4, page 708-722 ISSN 1095-9289 1054-3139 |
op_doi |
https://doi.org/10.1016/j.icesjms.2005.02.005 |
container_title |
ICES Journal of Marine Science |
container_volume |
62 |
container_issue |
4 |
container_start_page |
708 |
op_container_end_page |
722 |
_version_ |
1811636665287966720 |