Joint temporal trends in river thermal and hydrological conditions can threaten the downstream migration of the critically endangered European eel
Climate change is modifying the hydrological and thermal regimes of rivers worldwide, threatening the triggering of organisms’ key life-cycle processes. European eel (Anguilla anguilla) is a critically endangered fish species that migrates over several thousand kilometres between its rearing habitat...
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ftimr:oai:imr.brage.unit.no:11250/2990104 2023-05-15T13:27:52+02:00 Joint temporal trends in river thermal and hydrological conditions can threaten the downstream migration of the critically endangered European eel Arevalo, Elorri Drouineau, Hilaire Tetard, Stephane Durif, Caroline Diserud, Ola Håvard Poole, W. Russell Maire, Anthony 2021 application/pdf https://hdl.handle.net/11250/2990104 https://doi.org/10.1038/s41598-021-96302-x eng eng Andre: HYNES program (INRAE–EDF R&D) urn:issn:2045-2322 https://hdl.handle.net/11250/2990104 https://doi.org/10.1038/s41598-021-96302-x cristin:1928740 11 Scientific Reports VDP::Zoologiske og botaniske fag: 480 VDP::Zoology and botany: 480 Peer reviewed Journal article 2021 ftimr https://doi.org/10.1038/s41598-021-96302-x 2022-04-13T22:40:17Z Climate change is modifying the hydrological and thermal regimes of rivers worldwide, threatening the triggering of organisms’ key life-cycle processes. European eel (Anguilla anguilla) is a critically endangered fish species that migrates over several thousand kilometres between its rearing habitats in continental waters of Europe and North Africa and its spawning area in the Sargasso Sea. Downstream migration of adult eels occurs during periods of decreasing river water temperature associated with high discharge but changes in these environmental cues may affected eel migratory conditions. An innovative multivariate method was developed to analyse long-term datasets of daily water temperature, discharge and eel passage in two European rivers. Over the past 50 years, water temperature and discharge increased in both rivers during the downstream migration period from August to November. Silver eels preferentially migrated at temperatures between 10 and 20 °C combined with high discharge. Environmental changes have resulted in the migration of silver eels under warmer water temperatures. This example illustrates how the changes in environmental cues have led to a growing mismatch between the migratory conditions preferentially selected and those actually used, which may threaten the completion of the eel’s life cycle and ultimately the persistence of this already critically endangered species. publishedVersion Article in Journal/Newspaper Anguilla anguilla European eel Institute for Marine Research: Brage IMR Scientific Reports 11 1 |
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Institute for Marine Research: Brage IMR |
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language |
English |
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VDP::Zoologiske og botaniske fag: 480 VDP::Zoology and botany: 480 |
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VDP::Zoologiske og botaniske fag: 480 VDP::Zoology and botany: 480 Arevalo, Elorri Drouineau, Hilaire Tetard, Stephane Durif, Caroline Diserud, Ola Håvard Poole, W. Russell Maire, Anthony Joint temporal trends in river thermal and hydrological conditions can threaten the downstream migration of the critically endangered European eel |
topic_facet |
VDP::Zoologiske og botaniske fag: 480 VDP::Zoology and botany: 480 |
description |
Climate change is modifying the hydrological and thermal regimes of rivers worldwide, threatening the triggering of organisms’ key life-cycle processes. European eel (Anguilla anguilla) is a critically endangered fish species that migrates over several thousand kilometres between its rearing habitats in continental waters of Europe and North Africa and its spawning area in the Sargasso Sea. Downstream migration of adult eels occurs during periods of decreasing river water temperature associated with high discharge but changes in these environmental cues may affected eel migratory conditions. An innovative multivariate method was developed to analyse long-term datasets of daily water temperature, discharge and eel passage in two European rivers. Over the past 50 years, water temperature and discharge increased in both rivers during the downstream migration period from August to November. Silver eels preferentially migrated at temperatures between 10 and 20 °C combined with high discharge. Environmental changes have resulted in the migration of silver eels under warmer water temperatures. This example illustrates how the changes in environmental cues have led to a growing mismatch between the migratory conditions preferentially selected and those actually used, which may threaten the completion of the eel’s life cycle and ultimately the persistence of this already critically endangered species. publishedVersion |
format |
Article in Journal/Newspaper |
author |
Arevalo, Elorri Drouineau, Hilaire Tetard, Stephane Durif, Caroline Diserud, Ola Håvard Poole, W. Russell Maire, Anthony |
author_facet |
Arevalo, Elorri Drouineau, Hilaire Tetard, Stephane Durif, Caroline Diserud, Ola Håvard Poole, W. Russell Maire, Anthony |
author_sort |
Arevalo, Elorri |
title |
Joint temporal trends in river thermal and hydrological conditions can threaten the downstream migration of the critically endangered European eel |
title_short |
Joint temporal trends in river thermal and hydrological conditions can threaten the downstream migration of the critically endangered European eel |
title_full |
Joint temporal trends in river thermal and hydrological conditions can threaten the downstream migration of the critically endangered European eel |
title_fullStr |
Joint temporal trends in river thermal and hydrological conditions can threaten the downstream migration of the critically endangered European eel |
title_full_unstemmed |
Joint temporal trends in river thermal and hydrological conditions can threaten the downstream migration of the critically endangered European eel |
title_sort |
joint temporal trends in river thermal and hydrological conditions can threaten the downstream migration of the critically endangered european eel |
publishDate |
2021 |
url |
https://hdl.handle.net/11250/2990104 https://doi.org/10.1038/s41598-021-96302-x |
genre |
Anguilla anguilla European eel |
genre_facet |
Anguilla anguilla European eel |
op_source |
11 Scientific Reports |
op_relation |
Andre: HYNES program (INRAE–EDF R&D) urn:issn:2045-2322 https://hdl.handle.net/11250/2990104 https://doi.org/10.1038/s41598-021-96302-x cristin:1928740 |
op_doi |
https://doi.org/10.1038/s41598-021-96302-x |
container_title |
Scientific Reports |
container_volume |
11 |
container_issue |
1 |
_version_ |
1766400848519233536 |