Silver eel downstream migration in fragmented rivers: use of a Bayesian model to track movements triggering and duration
[Departement_IRSTEA]Eaux [TR1_IRSTEA]QUASARE International audience Obstacles in rivers are considered to be one of the main threats to diadromous fish. As a result of the recent collapse of the European eel, the European Commission introduced a Regulation, requiring to reduce all sources of anthrop...
Published in: | Aquatic Living Resources |
---|---|
Main Authors: | , , , , , |
Other Authors: | , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
HAL CCSD
2017
|
Subjects: | |
Online Access: | https://hal.science/hal-01545572 https://hal.science/hal-01545572/document https://hal.science/hal-01545572/file/bx2017-pub00054516.pdf https://doi.org/10.1051/alr/2017003 |
id |
ftunivpoitiers:oai:HAL:hal-01545572v1 |
---|---|
record_format |
openpolar |
spelling |
ftunivpoitiers:oai:HAL:hal-01545572v1 2023-09-05T13:11:59+02:00 Silver eel downstream migration in fragmented rivers: use of a Bayesian model to track movements triggering and duration Drouineau, Hilaire Bau, F. Alric, A. Deligne, N. Gomes, P. Sagnes, P. Ecosystèmes aquatiques et changements globaux (UR EABX) Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA) Office français de la biodiversité - Pôle Ecohydraulique OFB - IMFT - P' (Pôle écohydraulique OFB - IMFT - P') Institut de mécanique des fluides de Toulouse (IMFT) Université Toulouse III - Paul Sabatier (UT3) Université de Toulouse (UT)-Université de Toulouse (UT)-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP) Université de Toulouse (UT)-Université Toulouse III - Paul Sabatier (UT3) Université de Toulouse (UT)-Institut Pprime (PPRIME) Université de Poitiers-ENSMA-Centre National de la Recherche Scientifique (CNRS)-Université de Poitiers-ENSMA-Centre National de la Recherche Scientifique (CNRS)-Office français de la biodiversité (OFB) 2017 https://hal.science/hal-01545572 https://hal.science/hal-01545572/document https://hal.science/hal-01545572/file/bx2017-pub00054516.pdf https://doi.org/10.1051/alr/2017003 en eng HAL CCSD EDP Sciences info:eu-repo/semantics/altIdentifier/doi/10.1051/alr/2017003 hal-01545572 https://hal.science/hal-01545572 https://hal.science/hal-01545572/document https://hal.science/hal-01545572/file/bx2017-pub00054516.pdf doi:10.1051/alr/2017003 IRSTEA: PUB00054516 info:eu-repo/semantics/OpenAccess ISSN: 0990-7440 EISSN: 1765-2952 Aquatic Living Resources https://hal.science/hal-01545572 Aquatic Living Resources, 2017, 30 (5), pp.5. ⟨10.1051/alr/2017003⟩ bayesian statistics OBSTACLE A LA MIGRATION MIGRATION ANGUILLA ANGUILLA STATISTIQUE BAYESIENNE [SDE.BE]Environmental Sciences/Biodiversity and Ecology [SDV.EE]Life Sciences [q-bio]/Ecology environment info:eu-repo/semantics/article Journal articles 2017 ftunivpoitiers https://doi.org/10.1051/alr/2017003 2023-08-16T16:35:52Z [Departement_IRSTEA]Eaux [TR1_IRSTEA]QUASARE International audience Obstacles in rivers are considered to be one of the main threats to diadromous fish. As a result of the recent collapse of the European eel, the European Commission introduced a Regulation, requiring to reduce all sources of anthropogenic mortality, including those caused by passing through hydropower turbines. Improving knowledge about migration triggers and processes is crucial to assess and mitigate the impact of obstacles. In our study, we tracked 97 tagged silver eels in a fragmented river situated in the Western France (the River Dronne). Using the movement ecology framework, and implementing a Bayesian state-space model, we confirmed the influence of river discharge on migration triggering and the distance travelled by fish. We also demonstrated that, in our studied area, there is a small window of opportunity for migration. Moreover, we found that obstacles have a significant impact on distance travelled. Combined with the small window, this suggests that assessment of obstacles impact on downstream migration should not be limited to quantifying mortality at hydroelectric facilities, but should also consider the delay induced by obstacles, and its effects on escapement. The study also suggests that temporary turbines shutdown may mitigate the impacts of hydropower facilities in rivers with migration process similar to those observed here. Article in Journal/Newspaper Anguilla anguilla Université de Poitiers: Publications de nos chercheurs.ses (HAL) Aquatic Living Resources 30 5 |
institution |
Open Polar |
collection |
Université de Poitiers: Publications de nos chercheurs.ses (HAL) |
op_collection_id |
ftunivpoitiers |
language |
English |
topic |
bayesian statistics OBSTACLE A LA MIGRATION MIGRATION ANGUILLA ANGUILLA STATISTIQUE BAYESIENNE [SDE.BE]Environmental Sciences/Biodiversity and Ecology [SDV.EE]Life Sciences [q-bio]/Ecology environment |
spellingShingle |
bayesian statistics OBSTACLE A LA MIGRATION MIGRATION ANGUILLA ANGUILLA STATISTIQUE BAYESIENNE [SDE.BE]Environmental Sciences/Biodiversity and Ecology [SDV.EE]Life Sciences [q-bio]/Ecology environment Drouineau, Hilaire Bau, F. Alric, A. Deligne, N. Gomes, P. Sagnes, P. Silver eel downstream migration in fragmented rivers: use of a Bayesian model to track movements triggering and duration |
topic_facet |
bayesian statistics OBSTACLE A LA MIGRATION MIGRATION ANGUILLA ANGUILLA STATISTIQUE BAYESIENNE [SDE.BE]Environmental Sciences/Biodiversity and Ecology [SDV.EE]Life Sciences [q-bio]/Ecology environment |
description |
[Departement_IRSTEA]Eaux [TR1_IRSTEA]QUASARE International audience Obstacles in rivers are considered to be one of the main threats to diadromous fish. As a result of the recent collapse of the European eel, the European Commission introduced a Regulation, requiring to reduce all sources of anthropogenic mortality, including those caused by passing through hydropower turbines. Improving knowledge about migration triggers and processes is crucial to assess and mitigate the impact of obstacles. In our study, we tracked 97 tagged silver eels in a fragmented river situated in the Western France (the River Dronne). Using the movement ecology framework, and implementing a Bayesian state-space model, we confirmed the influence of river discharge on migration triggering and the distance travelled by fish. We also demonstrated that, in our studied area, there is a small window of opportunity for migration. Moreover, we found that obstacles have a significant impact on distance travelled. Combined with the small window, this suggests that assessment of obstacles impact on downstream migration should not be limited to quantifying mortality at hydroelectric facilities, but should also consider the delay induced by obstacles, and its effects on escapement. The study also suggests that temporary turbines shutdown may mitigate the impacts of hydropower facilities in rivers with migration process similar to those observed here. |
author2 |
Ecosystèmes aquatiques et changements globaux (UR EABX) Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA) Office français de la biodiversité - Pôle Ecohydraulique OFB - IMFT - P' (Pôle écohydraulique OFB - IMFT - P') Institut de mécanique des fluides de Toulouse (IMFT) Université Toulouse III - Paul Sabatier (UT3) Université de Toulouse (UT)-Université de Toulouse (UT)-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP) Université de Toulouse (UT)-Université Toulouse III - Paul Sabatier (UT3) Université de Toulouse (UT)-Institut Pprime (PPRIME) Université de Poitiers-ENSMA-Centre National de la Recherche Scientifique (CNRS)-Université de Poitiers-ENSMA-Centre National de la Recherche Scientifique (CNRS)-Office français de la biodiversité (OFB) |
format |
Article in Journal/Newspaper |
author |
Drouineau, Hilaire Bau, F. Alric, A. Deligne, N. Gomes, P. Sagnes, P. |
author_facet |
Drouineau, Hilaire Bau, F. Alric, A. Deligne, N. Gomes, P. Sagnes, P. |
author_sort |
Drouineau, Hilaire |
title |
Silver eel downstream migration in fragmented rivers: use of a Bayesian model to track movements triggering and duration |
title_short |
Silver eel downstream migration in fragmented rivers: use of a Bayesian model to track movements triggering and duration |
title_full |
Silver eel downstream migration in fragmented rivers: use of a Bayesian model to track movements triggering and duration |
title_fullStr |
Silver eel downstream migration in fragmented rivers: use of a Bayesian model to track movements triggering and duration |
title_full_unstemmed |
Silver eel downstream migration in fragmented rivers: use of a Bayesian model to track movements triggering and duration |
title_sort |
silver eel downstream migration in fragmented rivers: use of a bayesian model to track movements triggering and duration |
publisher |
HAL CCSD |
publishDate |
2017 |
url |
https://hal.science/hal-01545572 https://hal.science/hal-01545572/document https://hal.science/hal-01545572/file/bx2017-pub00054516.pdf https://doi.org/10.1051/alr/2017003 |
genre |
Anguilla anguilla |
genre_facet |
Anguilla anguilla |
op_source |
ISSN: 0990-7440 EISSN: 1765-2952 Aquatic Living Resources https://hal.science/hal-01545572 Aquatic Living Resources, 2017, 30 (5), pp.5. ⟨10.1051/alr/2017003⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1051/alr/2017003 hal-01545572 https://hal.science/hal-01545572 https://hal.science/hal-01545572/document https://hal.science/hal-01545572/file/bx2017-pub00054516.pdf doi:10.1051/alr/2017003 IRSTEA: PUB00054516 |
op_rights |
info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.1051/alr/2017003 |
container_title |
Aquatic Living Resources |
container_volume |
30 |
container_start_page |
5 |
_version_ |
1776198337114931200 |