Patterns in apparent survival of Atlantic salmon (Salmo salar) parr in relation to variable ice conditions throughout winter
Apparent within-site survival of Atlantic salmon ( Salmo salar ) parr, individually tagged with passive integrated transponders, was not constant throughout the winter period in a 3-year study (2003–2006) in Catamaran Brook, New Brunswick, Canada. Highest decline in apparent survival (19.4%–33.3% of...
Published in: | Canadian Journal of Fisheries and Aquatic Sciences |
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Canadian Science Publishing
2010
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Online Access: | http://dx.doi.org/10.1139/f10-093 http://www.nrcresearchpress.com/doi/full-xml/10.1139/F10-093 http://www.nrcresearchpress.com/doi/pdf/10.1139/F10-093 |
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crcansciencepubl:10.1139/f10-093 2024-06-23T07:51:14+00:00 Patterns in apparent survival of Atlantic salmon (Salmo salar) parr in relation to variable ice conditions throughout winter Linnansaari, Tommi Cunjak, Richard A. Jonsson, Bror 2010 http://dx.doi.org/10.1139/f10-093 http://www.nrcresearchpress.com/doi/full-xml/10.1139/F10-093 http://www.nrcresearchpress.com/doi/pdf/10.1139/F10-093 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Canadian Journal of Fisheries and Aquatic Sciences volume 67, issue 11, page 1744-1754 ISSN 0706-652X 1205-7533 journal-article 2010 crcansciencepubl https://doi.org/10.1139/f10-093 2024-06-06T04:11:16Z Apparent within-site survival of Atlantic salmon ( Salmo salar ) parr, individually tagged with passive integrated transponders, was not constant throughout the winter period in a 3-year study (2003–2006) in Catamaran Brook, New Brunswick, Canada. Highest decline in apparent survival (19.4%–33.3% of the study population) occurred prior to any ice formation and coincided with early winter acclimatization period (dynamic temperature and discharge regime). Stream discharge and parr maturity were identified to be relevant factors explaining emigration prior to ice formation. Apparent survival was improved during the period affected by subsurface ice and considerably better when surface ice was prevailing, with a decline in population size between 0% and 15.4%. Overall, observed within-site winter mortality was low (4.4%), and the majority of the loss of tagged salmon parr occurred because of emigration. On average, the within-site population of tagged salmon parr declined by 31.7% over the whole winter (November–April). Our data suggest that anthropogenic impacts, like climate change or river regulation, are likely to affect the apparent survival rate and distribution of juvenile Atlantic salmon because of their effects on natural ice regime in streams. Article in Journal/Newspaper Atlantic salmon Salmo salar Canadian Science Publishing Canada Canadian Journal of Fisheries and Aquatic Sciences 67 11 1744 1754 |
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Open Polar |
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Canadian Science Publishing |
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crcansciencepubl |
language |
English |
description |
Apparent within-site survival of Atlantic salmon ( Salmo salar ) parr, individually tagged with passive integrated transponders, was not constant throughout the winter period in a 3-year study (2003–2006) in Catamaran Brook, New Brunswick, Canada. Highest decline in apparent survival (19.4%–33.3% of the study population) occurred prior to any ice formation and coincided with early winter acclimatization period (dynamic temperature and discharge regime). Stream discharge and parr maturity were identified to be relevant factors explaining emigration prior to ice formation. Apparent survival was improved during the period affected by subsurface ice and considerably better when surface ice was prevailing, with a decline in population size between 0% and 15.4%. Overall, observed within-site winter mortality was low (4.4%), and the majority of the loss of tagged salmon parr occurred because of emigration. On average, the within-site population of tagged salmon parr declined by 31.7% over the whole winter (November–April). Our data suggest that anthropogenic impacts, like climate change or river regulation, are likely to affect the apparent survival rate and distribution of juvenile Atlantic salmon because of their effects on natural ice regime in streams. |
author2 |
Jonsson, Bror |
format |
Article in Journal/Newspaper |
author |
Linnansaari, Tommi Cunjak, Richard A. |
spellingShingle |
Linnansaari, Tommi Cunjak, Richard A. Patterns in apparent survival of Atlantic salmon (Salmo salar) parr in relation to variable ice conditions throughout winter |
author_facet |
Linnansaari, Tommi Cunjak, Richard A. |
author_sort |
Linnansaari, Tommi |
title |
Patterns in apparent survival of Atlantic salmon (Salmo salar) parr in relation to variable ice conditions throughout winter |
title_short |
Patterns in apparent survival of Atlantic salmon (Salmo salar) parr in relation to variable ice conditions throughout winter |
title_full |
Patterns in apparent survival of Atlantic salmon (Salmo salar) parr in relation to variable ice conditions throughout winter |
title_fullStr |
Patterns in apparent survival of Atlantic salmon (Salmo salar) parr in relation to variable ice conditions throughout winter |
title_full_unstemmed |
Patterns in apparent survival of Atlantic salmon (Salmo salar) parr in relation to variable ice conditions throughout winter |
title_sort |
patterns in apparent survival of atlantic salmon (salmo salar) parr in relation to variable ice conditions throughout winter |
publisher |
Canadian Science Publishing |
publishDate |
2010 |
url |
http://dx.doi.org/10.1139/f10-093 http://www.nrcresearchpress.com/doi/full-xml/10.1139/F10-093 http://www.nrcresearchpress.com/doi/pdf/10.1139/F10-093 |
geographic |
Canada |
geographic_facet |
Canada |
genre |
Atlantic salmon Salmo salar |
genre_facet |
Atlantic salmon Salmo salar |
op_source |
Canadian Journal of Fisheries and Aquatic Sciences volume 67, issue 11, page 1744-1754 ISSN 0706-652X 1205-7533 |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/f10-093 |
container_title |
Canadian Journal of Fisheries and Aquatic Sciences |
container_volume |
67 |
container_issue |
11 |
container_start_page |
1744 |
op_container_end_page |
1754 |
_version_ |
1802642251649646592 |