Migration delays and mortality of adult Atlantic salmon (Salmo salar) en route to spawning grounds on the River Allier, France
During summer periods when water temperatures are high, Atlantic salmon Salmo salar are forced to halt their migration. This phenomenon was observed in our study in the River Allier in France. Between 200 and 1200 S. salar have come to spawn in the River Allier every year for the last 2 decades, but...
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Inter-Research Science Center
2011
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Online Access: | https://oatao.univ-toulouse.fr/6228/ https://oatao.univ-toulouse.fr/6228/1/Terrade_6228.pdf https://doi.org/10.3354/esr00384 |
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ftunivtoulouseoa:oai:oatao.univ-toulouse.fr:6228 2023-05-15T15:31:31+02:00 Migration delays and mortality of adult Atlantic salmon (Salmo salar) en route to spawning grounds on the River Allier, France Baisez, Aurore Bach, Jean-Michel Leon, Cédric Parouty, Thimothé Terrade, Renaud Hoffmann, Marion Laffaille, Pascal Centre National de la Recherche Scientifique - CNRS (FRANCE) Institut National Polytechnique de Toulouse - Toulouse INP (FRANCE) Logrami (FRANCE) Université Toulouse III - Paul Sabatier - UT3 (FRANCE) Laboratoire Ecologie fonctionnelle et Environnement - EcoLab (Toulouse, France) 2011 application/pdf https://oatao.univ-toulouse.fr/6228/ https://oatao.univ-toulouse.fr/6228/1/Terrade_6228.pdf https://doi.org/10.3354/esr00384 en eng Inter-Research Science Center https://oatao.univ-toulouse.fr/6228/1/Terrade_6228.pdf HAL : hal-03469334 Baisez, Aurore and Bach, Jean-Michel and Leon, Cédric and Parouty, Thimothé and Terrade, Renaud and Hoffmann, Marion and Laffaille, Pascal. Migration delays and mortality of adult Atlantic salmon (Salmo salar) en route to spawning grounds on the River Allier, France. (2011) Endangered Species Research (ESR), 15 (3). 265-270. ISSN 1863-5407 info:eu-repo/semantics/openAccess Climatologie Management Water temperature Climate change Long river Article PeerReviewed info:eu-repo/semantics/article 2011 ftunivtoulouseoa https://doi.org/10.3354/esr00384 2021-12-07T23:28:31Z During summer periods when water temperatures are high, Atlantic salmon Salmo salar are forced to halt their migration. This phenomenon was observed in our study in the River Allier in France. Between 200 and 1200 S. salar have come to spawn in the River Allier every year for the last 2 decades, but the population has suffered a severe decline. In 2009, 30 individuals were radio tracked; of these, 11 died during the summer period, while the other 19 resumed their migration in the fall. This mortality level was higher amongst the S. salar that arrived towards the end of the migration period, i.e. those individuals that tended to spend the summer in the lower, warmer stretch of the river. In view of the continuing rise in freshwater temperatures, measures are urgently needed to reduce the impact of increased temperatures on fish in the River Allier. This could be achieved by (1) promoting summer delays further upstream by making it easier for fish to pass through dams and (2) by protecting the spawning adults, particularly in the locations of summer halt. This study is consistent with a growing body of literature that suggests that climate change could have devastating effects on the upstream migration phase of anadromous salmonids. Article in Journal/Newspaper Atlantic salmon Salmo salar OATAO (Open Archive Toulouse Archive Ouverte - Université de Toulouse) Endangered Species Research 15 3 265 270 |
institution |
Open Polar |
collection |
OATAO (Open Archive Toulouse Archive Ouverte - Université de Toulouse) |
op_collection_id |
ftunivtoulouseoa |
language |
English |
topic |
Climatologie Management Water temperature Climate change Long river |
spellingShingle |
Climatologie Management Water temperature Climate change Long river Baisez, Aurore Bach, Jean-Michel Leon, Cédric Parouty, Thimothé Terrade, Renaud Hoffmann, Marion Laffaille, Pascal Migration delays and mortality of adult Atlantic salmon (Salmo salar) en route to spawning grounds on the River Allier, France |
topic_facet |
Climatologie Management Water temperature Climate change Long river |
description |
During summer periods when water temperatures are high, Atlantic salmon Salmo salar are forced to halt their migration. This phenomenon was observed in our study in the River Allier in France. Between 200 and 1200 S. salar have come to spawn in the River Allier every year for the last 2 decades, but the population has suffered a severe decline. In 2009, 30 individuals were radio tracked; of these, 11 died during the summer period, while the other 19 resumed their migration in the fall. This mortality level was higher amongst the S. salar that arrived towards the end of the migration period, i.e. those individuals that tended to spend the summer in the lower, warmer stretch of the river. In view of the continuing rise in freshwater temperatures, measures are urgently needed to reduce the impact of increased temperatures on fish in the River Allier. This could be achieved by (1) promoting summer delays further upstream by making it easier for fish to pass through dams and (2) by protecting the spawning adults, particularly in the locations of summer halt. This study is consistent with a growing body of literature that suggests that climate change could have devastating effects on the upstream migration phase of anadromous salmonids. |
author2 |
Centre National de la Recherche Scientifique - CNRS (FRANCE) Institut National Polytechnique de Toulouse - Toulouse INP (FRANCE) Logrami (FRANCE) Université Toulouse III - Paul Sabatier - UT3 (FRANCE) Laboratoire Ecologie fonctionnelle et Environnement - EcoLab (Toulouse, France) |
format |
Article in Journal/Newspaper |
author |
Baisez, Aurore Bach, Jean-Michel Leon, Cédric Parouty, Thimothé Terrade, Renaud Hoffmann, Marion Laffaille, Pascal |
author_facet |
Baisez, Aurore Bach, Jean-Michel Leon, Cédric Parouty, Thimothé Terrade, Renaud Hoffmann, Marion Laffaille, Pascal |
author_sort |
Baisez, Aurore |
title |
Migration delays and mortality of adult Atlantic salmon (Salmo salar) en route to spawning grounds on the River Allier, France |
title_short |
Migration delays and mortality of adult Atlantic salmon (Salmo salar) en route to spawning grounds on the River Allier, France |
title_full |
Migration delays and mortality of adult Atlantic salmon (Salmo salar) en route to spawning grounds on the River Allier, France |
title_fullStr |
Migration delays and mortality of adult Atlantic salmon (Salmo salar) en route to spawning grounds on the River Allier, France |
title_full_unstemmed |
Migration delays and mortality of adult Atlantic salmon (Salmo salar) en route to spawning grounds on the River Allier, France |
title_sort |
migration delays and mortality of adult atlantic salmon (salmo salar) en route to spawning grounds on the river allier, france |
publisher |
Inter-Research Science Center |
publishDate |
2011 |
url |
https://oatao.univ-toulouse.fr/6228/ https://oatao.univ-toulouse.fr/6228/1/Terrade_6228.pdf https://doi.org/10.3354/esr00384 |
genre |
Atlantic salmon Salmo salar |
genre_facet |
Atlantic salmon Salmo salar |
op_relation |
https://oatao.univ-toulouse.fr/6228/1/Terrade_6228.pdf HAL : hal-03469334 Baisez, Aurore and Bach, Jean-Michel and Leon, Cédric and Parouty, Thimothé and Terrade, Renaud and Hoffmann, Marion and Laffaille, Pascal. Migration delays and mortality of adult Atlantic salmon (Salmo salar) en route to spawning grounds on the River Allier, France. (2011) Endangered Species Research (ESR), 15 (3). 265-270. ISSN 1863-5407 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.3354/esr00384 |
container_title |
Endangered Species Research |
container_volume |
15 |
container_issue |
3 |
container_start_page |
265 |
op_container_end_page |
270 |
_version_ |
1766362048976912384 |