Form and uncertainty in stock–recruitment relations: observations and implications for Atlantic salmon (Salmo salar) management
This paper reports an investigation of stock–recruitment relations for Atlantic salmon ( Salmo salar ). We regard these relations as stochastic functions characterized by an expected stock–recruitment relation and deviations from this expectation driven by observational error and uncharacterised env...
Published in: | Canadian Journal of Fisheries and Aquatic Sciences |
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crcansciencepubl:10.1139/f10-038 2024-04-28T08:13:17+00:00 Form and uncertainty in stock–recruitment relations: observations and implications for Atlantic salmon (Salmo salar) management Gurney, William S.C. Bacon, Philip J. McKenzie, Eddie McGinnity, Philip Mclean, Julian Smith, Gordon Youngson, Alan Quinn, Terrance 2010 http://dx.doi.org/10.1139/f10-038 http://www.nrcresearchpress.com/doi/full-xml/10.1139/F10-038 http://www.nrcresearchpress.com/doi/pdf/10.1139/F10-038 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Canadian Journal of Fisheries and Aquatic Sciences volume 67, issue 6, page 1040-1055 ISSN 0706-652X 1205-7533 Aquatic Science Ecology, Evolution, Behavior and Systematics journal-article 2010 crcansciencepubl https://doi.org/10.1139/f10-038 2024-04-02T06:55:51Z This paper reports an investigation of stock–recruitment relations for Atlantic salmon ( Salmo salar ). We regard these relations as stochastic functions characterized by an expected stock–recruitment relation and deviations from this expectation driven by observational error and uncharacterised environmental variability. We estimate model parameters by standard Bayesian methods. Analysis of the input–output characteristics of segments of the salmon life cycle in the Girnock Burn (Northeast Scotland) reveals two independent regulatory processes, one between ova and fry and the other between fry and smolts. Comparison of stock–recruitment relations for Atlantic salmon in Scotland, Ireland, and Canada, reinforced by an extended series of simulation studies, shows that even when comparatively long time series of high quality data are available, it is frequently difficult to exclude the possibility of low stock depensation — an effect whose implication of enhanced extinction risk implies that precautionary management policy would pay special attention to the posssibility of its occurence. A particular feature of our simulation results is their demonstration that inappropriate combination of distinct subpopulations both increases process noise and distorts the expected stock–recruitment relation, thereby greatly reducing the accuracy of any system identification process. Article in Journal/Newspaper Atlantic salmon Salmo salar Canadian Science Publishing Canadian Journal of Fisheries and Aquatic Sciences 67 6 1040 1055 |
institution |
Open Polar |
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Canadian Science Publishing |
op_collection_id |
crcansciencepubl |
language |
English |
topic |
Aquatic Science Ecology, Evolution, Behavior and Systematics |
spellingShingle |
Aquatic Science Ecology, Evolution, Behavior and Systematics Gurney, William S.C. Bacon, Philip J. McKenzie, Eddie McGinnity, Philip Mclean, Julian Smith, Gordon Youngson, Alan Form and uncertainty in stock–recruitment relations: observations and implications for Atlantic salmon (Salmo salar) management |
topic_facet |
Aquatic Science Ecology, Evolution, Behavior and Systematics |
description |
This paper reports an investigation of stock–recruitment relations for Atlantic salmon ( Salmo salar ). We regard these relations as stochastic functions characterized by an expected stock–recruitment relation and deviations from this expectation driven by observational error and uncharacterised environmental variability. We estimate model parameters by standard Bayesian methods. Analysis of the input–output characteristics of segments of the salmon life cycle in the Girnock Burn (Northeast Scotland) reveals two independent regulatory processes, one between ova and fry and the other between fry and smolts. Comparison of stock–recruitment relations for Atlantic salmon in Scotland, Ireland, and Canada, reinforced by an extended series of simulation studies, shows that even when comparatively long time series of high quality data are available, it is frequently difficult to exclude the possibility of low stock depensation — an effect whose implication of enhanced extinction risk implies that precautionary management policy would pay special attention to the posssibility of its occurence. A particular feature of our simulation results is their demonstration that inappropriate combination of distinct subpopulations both increases process noise and distorts the expected stock–recruitment relation, thereby greatly reducing the accuracy of any system identification process. |
author2 |
Quinn, Terrance |
format |
Article in Journal/Newspaper |
author |
Gurney, William S.C. Bacon, Philip J. McKenzie, Eddie McGinnity, Philip Mclean, Julian Smith, Gordon Youngson, Alan |
author_facet |
Gurney, William S.C. Bacon, Philip J. McKenzie, Eddie McGinnity, Philip Mclean, Julian Smith, Gordon Youngson, Alan |
author_sort |
Gurney, William S.C. |
title |
Form and uncertainty in stock–recruitment relations: observations and implications for Atlantic salmon (Salmo salar) management |
title_short |
Form and uncertainty in stock–recruitment relations: observations and implications for Atlantic salmon (Salmo salar) management |
title_full |
Form and uncertainty in stock–recruitment relations: observations and implications for Atlantic salmon (Salmo salar) management |
title_fullStr |
Form and uncertainty in stock–recruitment relations: observations and implications for Atlantic salmon (Salmo salar) management |
title_full_unstemmed |
Form and uncertainty in stock–recruitment relations: observations and implications for Atlantic salmon (Salmo salar) management |
title_sort |
form and uncertainty in stock–recruitment relations: observations and implications for atlantic salmon (salmo salar) management |
publisher |
Canadian Science Publishing |
publishDate |
2010 |
url |
http://dx.doi.org/10.1139/f10-038 http://www.nrcresearchpress.com/doi/full-xml/10.1139/F10-038 http://www.nrcresearchpress.com/doi/pdf/10.1139/F10-038 |
genre |
Atlantic salmon Salmo salar |
genre_facet |
Atlantic salmon Salmo salar |
op_source |
Canadian Journal of Fisheries and Aquatic Sciences volume 67, issue 6, page 1040-1055 ISSN 0706-652X 1205-7533 |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/f10-038 |
container_title |
Canadian Journal of Fisheries and Aquatic Sciences |
container_volume |
67 |
container_issue |
6 |
container_start_page |
1040 |
op_container_end_page |
1055 |
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1797579848956248064 |