Joint temporal trends in river thermal and hydrological conditions can threaten the downstream migration of the critically endangered European eel
Abstract 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 rear...
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2021
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crspringernat:10.1038/s41598-021-96302-x 2023-05-15T13:27:51+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 Tétard, Stéphane Durif, Caroline M. F. Diserud, Ola H. Poole, W. Russell Maire, Anthony HYNES programm 2021 http://dx.doi.org/10.1038/s41598-021-96302-x https://www.nature.com/articles/s41598-021-96302-x.pdf https://www.nature.com/articles/s41598-021-96302-x en eng Springer Science and Business Media LLC https://creativecommons.org/licenses/by/4.0 https://creativecommons.org/licenses/by/4.0 CC-BY Scientific Reports volume 11, issue 1 ISSN 2045-2322 Multidisciplinary journal-article 2021 crspringernat https://doi.org/10.1038/s41598-021-96302-x 2022-01-04T09:20:52Z Abstract 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. Article in Journal/Newspaper Anguilla anguilla European eel Springer Nature (via Crossref) Scientific Reports 11 1 |
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English |
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Multidisciplinary Arevalo, Elorri Drouineau, Hilaire Tétard, Stéphane Durif, Caroline M. F. Diserud, Ola H. 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 |
Multidisciplinary |
description |
Abstract 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. |
author2 |
HYNES programm |
format |
Article in Journal/Newspaper |
author |
Arevalo, Elorri Drouineau, Hilaire Tétard, Stéphane Durif, Caroline M. F. Diserud, Ola H. Poole, W. Russell Maire, Anthony |
author_facet |
Arevalo, Elorri Drouineau, Hilaire Tétard, Stéphane Durif, Caroline M. F. Diserud, Ola H. 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 |
publisher |
Springer Science and Business Media LLC |
publishDate |
2021 |
url |
http://dx.doi.org/10.1038/s41598-021-96302-x https://www.nature.com/articles/s41598-021-96302-x.pdf https://www.nature.com/articles/s41598-021-96302-x |
genre |
Anguilla anguilla European eel |
genre_facet |
Anguilla anguilla European eel |
op_source |
Scientific Reports volume 11, issue 1 ISSN 2045-2322 |
op_rights |
https://creativecommons.org/licenses/by/4.0 https://creativecommons.org/licenses/by/4.0 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1038/s41598-021-96302-x |
container_title |
Scientific Reports |
container_volume |
11 |
container_issue |
1 |
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1766400711666434048 |