The influence of the freshwater environment and the biological characteristics of Atlantic salmon smolts on their subsequent marine survival
<qd> 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. The influence of the freshwater environment and the biological characteristics of Atlantic salmon smolts on th...
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Oxford University Press
2012
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fthighwire:oai:open-archive.highwire.org:icesjms:fsr208v1 2023-05-15T15:31:13+02:00 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. 2012-01-27 06:29:42.0 text/html http://icesjms.oxfordjournals.org/cgi/content/short/fsr208v1 https://doi.org/10.1093/icesjms/fsr208 en eng Oxford University Press http://icesjms.oxfordjournals.org/cgi/content/short/fsr208v1 http://dx.doi.org/10.1093/icesjms/fsr208 Copyright (C) 2012, International Council for the Exploration of the Sea/Conseil International pour l'Exploration de la Mer Salmon at Sea TEXT 2012 fthighwire https://doi.org/10.1093/icesjms/fsr208 2013-05-26T22:47:18Z <qd> 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. The influence of the freshwater environment and the biological characteristics of Atlantic salmon smolts on their subsequent marine survival. – ICES Journal of Marine Science, doi:10.1093/icesjms/fsr208. </qd>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. Text Atlantic salmon HighWire Press (Stanford University) 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 |
institution |
Open Polar |
collection |
HighWire Press (Stanford University) |
op_collection_id |
fthighwire |
language |
English |
topic |
Salmon at Sea |
spellingShingle |
Salmon at Sea 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 |
topic_facet |
Salmon at Sea |
description |
<qd> 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. The influence of the freshwater environment and the biological characteristics of Atlantic salmon smolts on their subsequent marine survival. – ICES Journal of Marine Science, doi:10.1093/icesjms/fsr208. </qd>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 |
Text |
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. |
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 |
publishDate |
2012 |
url |
http://icesjms.oxfordjournals.org/cgi/content/short/fsr208v1 https://doi.org/10.1093/icesjms/fsr208 |
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_relation |
http://icesjms.oxfordjournals.org/cgi/content/short/fsr208v1 http://dx.doi.org/10.1093/icesjms/fsr208 |
op_rights |
Copyright (C) 2012, International Council for the Exploration of the Sea/Conseil International pour l'Exploration de la Mer |
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_ |
1766361718671278080 |