Migration behaviour of Atlantic salmon smolts ( Salmo salar L.) in a short and highly fragmented gravel‐bed river stretch
Abstract The succession of migration barriers and different turbine types during downstream migration impede Atlantic salmon ( Salmo salar L.) smolts from reaching the sea in time but is poorly studied. We investigated the isolated and cumulative impacts of 14 consecutive migration barriers (MBs) on...
Published in: | Ecology of Freshwater Fish |
---|---|
Main Authors: | , , , , , , , , , , |
Other Authors: | |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Wiley
2021
|
Subjects: | |
Online Access: | http://dx.doi.org/10.1111/eff.12646 https://onlinelibrary.wiley.com/doi/pdf/10.1111/eff.12646 https://onlinelibrary.wiley.com/doi/full-xml/10.1111/eff.12646 |
id |
crwiley:10.1111/eff.12646 |
---|---|
record_format |
openpolar |
spelling |
crwiley:10.1111/eff.12646 2024-04-28T08:13:30+00:00 Migration behaviour of Atlantic salmon smolts ( Salmo salar L.) in a short and highly fragmented gravel‐bed river stretch Renardy, Séverine Colson, Dylan Benitez, Jean‐Philippe Dierckx, Arnaud Goffaux, Delphine Sabbe, Justine Rabouan, Amaury Detrait, Olivier Nzau Matondo, Billy Sonny, Damien Ovidio, Michaël Service Public de Wallonie 2021 http://dx.doi.org/10.1111/eff.12646 https://onlinelibrary.wiley.com/doi/pdf/10.1111/eff.12646 https://onlinelibrary.wiley.com/doi/full-xml/10.1111/eff.12646 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Ecology of Freshwater Fish volume 31, issue 3, page 499-514 ISSN 0906-6691 1600-0633 Ecology Aquatic Science Ecology, Evolution, Behavior and Systematics journal-article 2021 crwiley https://doi.org/10.1111/eff.12646 2024-04-02T08:46:09Z Abstract The succession of migration barriers and different turbine types during downstream migration impede Atlantic salmon ( Salmo salar L.) smolts from reaching the sea in time but is poorly studied. We investigated the isolated and cumulative impacts of 14 consecutive migration barriers (MBs) on downstream migration of 200 radio‐tagged smolts over an 18.9 km stretch of gravel‐bed river, by equipping five MBs with automated radio listening stations. At the level of isolated barriers, median research times (i.e. time between the first and the last detection upstream of a MB) varied between 0.1 and 0.7 h. The median crossing delays (i.e. time between the first detection upstream and the first detection downstream of a MB) varied between 1 and 2.9 h. Considering successive MBs, median cumulative crossing delays varied between 2.6 and 32.1 h and increased with the number of MBs. We observed a global mortality rate between 33% and 76%, increasing with the distance travelled and the associated number of MBs. Only 48% of the migrating smolts reached the end of the studied river stretch. Results suggest that the dynamics of the smolt downstream migration over this short highly fragmented stretch had a significant effect in terms of delays, mortalities and seaward escapement rate. Article in Journal/Newspaper Atlantic salmon Salmo salar Wiley Online Library Ecology of Freshwater Fish 31 3 499 514 |
institution |
Open Polar |
collection |
Wiley Online Library |
op_collection_id |
crwiley |
language |
English |
topic |
Ecology Aquatic Science Ecology, Evolution, Behavior and Systematics |
spellingShingle |
Ecology Aquatic Science Ecology, Evolution, Behavior and Systematics Renardy, Séverine Colson, Dylan Benitez, Jean‐Philippe Dierckx, Arnaud Goffaux, Delphine Sabbe, Justine Rabouan, Amaury Detrait, Olivier Nzau Matondo, Billy Sonny, Damien Ovidio, Michaël Migration behaviour of Atlantic salmon smolts ( Salmo salar L.) in a short and highly fragmented gravel‐bed river stretch |
topic_facet |
Ecology Aquatic Science Ecology, Evolution, Behavior and Systematics |
description |
Abstract The succession of migration barriers and different turbine types during downstream migration impede Atlantic salmon ( Salmo salar L.) smolts from reaching the sea in time but is poorly studied. We investigated the isolated and cumulative impacts of 14 consecutive migration barriers (MBs) on downstream migration of 200 radio‐tagged smolts over an 18.9 km stretch of gravel‐bed river, by equipping five MBs with automated radio listening stations. At the level of isolated barriers, median research times (i.e. time between the first and the last detection upstream of a MB) varied between 0.1 and 0.7 h. The median crossing delays (i.e. time between the first detection upstream and the first detection downstream of a MB) varied between 1 and 2.9 h. Considering successive MBs, median cumulative crossing delays varied between 2.6 and 32.1 h and increased with the number of MBs. We observed a global mortality rate between 33% and 76%, increasing with the distance travelled and the associated number of MBs. Only 48% of the migrating smolts reached the end of the studied river stretch. Results suggest that the dynamics of the smolt downstream migration over this short highly fragmented stretch had a significant effect in terms of delays, mortalities and seaward escapement rate. |
author2 |
Service Public de Wallonie |
format |
Article in Journal/Newspaper |
author |
Renardy, Séverine Colson, Dylan Benitez, Jean‐Philippe Dierckx, Arnaud Goffaux, Delphine Sabbe, Justine Rabouan, Amaury Detrait, Olivier Nzau Matondo, Billy Sonny, Damien Ovidio, Michaël |
author_facet |
Renardy, Séverine Colson, Dylan Benitez, Jean‐Philippe Dierckx, Arnaud Goffaux, Delphine Sabbe, Justine Rabouan, Amaury Detrait, Olivier Nzau Matondo, Billy Sonny, Damien Ovidio, Michaël |
author_sort |
Renardy, Séverine |
title |
Migration behaviour of Atlantic salmon smolts ( Salmo salar L.) in a short and highly fragmented gravel‐bed river stretch |
title_short |
Migration behaviour of Atlantic salmon smolts ( Salmo salar L.) in a short and highly fragmented gravel‐bed river stretch |
title_full |
Migration behaviour of Atlantic salmon smolts ( Salmo salar L.) in a short and highly fragmented gravel‐bed river stretch |
title_fullStr |
Migration behaviour of Atlantic salmon smolts ( Salmo salar L.) in a short and highly fragmented gravel‐bed river stretch |
title_full_unstemmed |
Migration behaviour of Atlantic salmon smolts ( Salmo salar L.) in a short and highly fragmented gravel‐bed river stretch |
title_sort |
migration behaviour of atlantic salmon smolts ( salmo salar l.) in a short and highly fragmented gravel‐bed river stretch |
publisher |
Wiley |
publishDate |
2021 |
url |
http://dx.doi.org/10.1111/eff.12646 https://onlinelibrary.wiley.com/doi/pdf/10.1111/eff.12646 https://onlinelibrary.wiley.com/doi/full-xml/10.1111/eff.12646 |
genre |
Atlantic salmon Salmo salar |
genre_facet |
Atlantic salmon Salmo salar |
op_source |
Ecology of Freshwater Fish volume 31, issue 3, page 499-514 ISSN 0906-6691 1600-0633 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1111/eff.12646 |
container_title |
Ecology of Freshwater Fish |
container_volume |
31 |
container_issue |
3 |
container_start_page |
499 |
op_container_end_page |
514 |
_version_ |
1797579977086992384 |