The influence of the freshwater environment and the biological characteristics of Atlantic salmon smolts on their subsequent marine survival
Abstract Russell, I. C., Aprahamian, M. W., Barry, J., Davidson, I. C., Fiske, P., Ibbotson, A. T., Kennedy, R. J., Maclean, J. C., Moore, A., Otero, J., Potter, E. C. E., and Todd, C. D. 2012. The influence of the freshwater environment and the biological characteristics of Atlantic salmon smolts o...
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Online Access: | http://dx.doi.org/10.1093/icesjms/fsr208 http://academic.oup.com/icesjms/article-pdf/69/9/1563/29144617/fsr208.pdf |
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croxfordunivpr:10.1093/icesjms/fsr208 2024-10-06T13:47:20+00:00 The influence of the freshwater environment and the biological characteristics of Atlantic salmon smolts on their subsequent marine survival Russell, Ian C. Aprahamian, Miran W. Barry, Jon Davidson, Ian C. Fiske, Peder Ibbotson, Anton T. Kennedy, Richard J. Maclean, Julian C. Moore, Andrew Otero, Jaime Potter, Ted (E. C. E.) Todd, Christopher D. 2012 http://dx.doi.org/10.1093/icesjms/fsr208 http://academic.oup.com/icesjms/article-pdf/69/9/1563/29144617/fsr208.pdf en eng Oxford University Press (OUP) ICES Journal of Marine Science volume 69, issue 9, page 1563-1573 ISSN 1095-9289 1054-3139 journal-article 2012 croxfordunivpr https://doi.org/10.1093/icesjms/fsr208 2024-09-10T04:15:35Z Abstract Russell, I. C., Aprahamian, M. W., Barry, J., Davidson, I. C., Fiske, P., Ibbotson, A. T., Kennedy, R. J., Maclean, J. C., Moore, A., Otero, J., Potter, E. C. E., and Todd, C. D. 2012. The influence of the freshwater environment and the biological characteristics of Atlantic salmon smolts on their subsequent marine survival. – ICES Journal of Marine Science, 69: 1563–1573. Atlantic salmon have declined markedly in the past 20–30 years throughout their range. Much of the focus for this decline has been on increased mortality during the marine phase of the life cycle. However, marine mortality does not operate independently of factors acting in freshwater and the biological characteristics of smolts migrating to sea. Over recent decades, juvenile salmon in many rivers have grown faster and migrated to sea at a younger age, so have been typically smaller than earlier. This has shortened the generation time for many individuals and may dampen the impact of increased marine mortality, assuming that expected higher in-river survival prior to smolting is not outweighed by increased mortality of smaller smolts at sea. Over the same period, smolt run-timing across the geographic range has been earlier, at an average rate of almost 3 d per decade. This has given rise to growing concerns about smolts potentially missing the optimum environmental migration “window”, the timing of which may also be changing. Contaminants and other factors operating in freshwater also impact smolt quality with adverse consequences for their physiological readiness for life at sea. Given that managers have very limited ability to influence the broad scale factors limiting salmon survival at sea, it is vital that freshwater habitats are managed to both maximize the smolt output and to minimize the impact of factors acting in freshwater that may compromise salmon once they migrate to sea. Article in Journal/Newspaper Atlantic salmon Oxford University Press Davidson ENVELOPE(-44.766,-44.766,-60.766,-60.766) Todd ENVELOPE(-85.933,-85.933,-78.050,-78.050) ICES Journal of Marine Science 69 9 1563 1573 |
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Open Polar |
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Oxford University Press |
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croxfordunivpr |
language |
English |
description |
Abstract Russell, I. C., Aprahamian, M. W., Barry, J., Davidson, I. C., Fiske, P., Ibbotson, A. T., Kennedy, R. J., Maclean, J. C., Moore, A., Otero, J., Potter, E. C. E., and Todd, C. D. 2012. The influence of the freshwater environment and the biological characteristics of Atlantic salmon smolts on their subsequent marine survival. – ICES Journal of Marine Science, 69: 1563–1573. Atlantic salmon have declined markedly in the past 20–30 years throughout their range. Much of the focus for this decline has been on increased mortality during the marine phase of the life cycle. However, marine mortality does not operate independently of factors acting in freshwater and the biological characteristics of smolts migrating to sea. Over recent decades, juvenile salmon in many rivers have grown faster and migrated to sea at a younger age, so have been typically smaller than earlier. This has shortened the generation time for many individuals and may dampen the impact of increased marine mortality, assuming that expected higher in-river survival prior to smolting is not outweighed by increased mortality of smaller smolts at sea. Over the same period, smolt run-timing across the geographic range has been earlier, at an average rate of almost 3 d per decade. This has given rise to growing concerns about smolts potentially missing the optimum environmental migration “window”, the timing of which may also be changing. Contaminants and other factors operating in freshwater also impact smolt quality with adverse consequences for their physiological readiness for life at sea. Given that managers have very limited ability to influence the broad scale factors limiting salmon survival at sea, it is vital that freshwater habitats are managed to both maximize the smolt output and to minimize the impact of factors acting in freshwater that may compromise salmon once they migrate to sea. |
format |
Article in Journal/Newspaper |
author |
Russell, Ian C. Aprahamian, Miran W. Barry, Jon Davidson, Ian C. Fiske, Peder Ibbotson, Anton T. Kennedy, Richard J. Maclean, Julian C. Moore, Andrew Otero, Jaime Potter, Ted (E. C. E.) Todd, Christopher D. |
spellingShingle |
Russell, Ian C. Aprahamian, Miran W. Barry, Jon Davidson, Ian C. Fiske, Peder Ibbotson, Anton T. Kennedy, Richard J. Maclean, Julian C. Moore, Andrew Otero, Jaime Potter, Ted (E. C. E.) Todd, Christopher D. The influence of the freshwater environment and the biological characteristics of Atlantic salmon smolts on their subsequent marine survival |
author_facet |
Russell, Ian C. Aprahamian, Miran W. Barry, Jon Davidson, Ian C. Fiske, Peder Ibbotson, Anton T. Kennedy, Richard J. Maclean, Julian C. Moore, Andrew Otero, Jaime Potter, Ted (E. C. E.) Todd, Christopher D. |
author_sort |
Russell, Ian C. |
title |
The influence of the freshwater environment and the biological characteristics of Atlantic salmon smolts on their subsequent marine survival |
title_short |
The influence of the freshwater environment and the biological characteristics of Atlantic salmon smolts on their subsequent marine survival |
title_full |
The influence of the freshwater environment and the biological characteristics of Atlantic salmon smolts on their subsequent marine survival |
title_fullStr |
The influence of the freshwater environment and the biological characteristics of Atlantic salmon smolts on their subsequent marine survival |
title_full_unstemmed |
The influence of the freshwater environment and the biological characteristics of Atlantic salmon smolts on their subsequent marine survival |
title_sort |
influence of the freshwater environment and the biological characteristics of atlantic salmon smolts on their subsequent marine survival |
publisher |
Oxford University Press (OUP) |
publishDate |
2012 |
url |
http://dx.doi.org/10.1093/icesjms/fsr208 http://academic.oup.com/icesjms/article-pdf/69/9/1563/29144617/fsr208.pdf |
long_lat |
ENVELOPE(-44.766,-44.766,-60.766,-60.766) ENVELOPE(-85.933,-85.933,-78.050,-78.050) |
geographic |
Davidson Todd |
geographic_facet |
Davidson Todd |
genre |
Atlantic salmon |
genre_facet |
Atlantic salmon |
op_source |
ICES Journal of Marine Science volume 69, issue 9, page 1563-1573 ISSN 1095-9289 1054-3139 |
op_doi |
https://doi.org/10.1093/icesjms/fsr208 |
container_title |
ICES Journal of Marine Science |
container_volume |
69 |
container_issue |
9 |
container_start_page |
1563 |
op_container_end_page |
1573 |
_version_ |
1812175554401533952 |