Factors influencing the downstream passage of European silver eels (Anguilla anguilla) through a tidal sluice
Tidal sluices are a frequent element in the tidal regions of Europe's rivers and may hinder downstream migrating European eels Anguilla anguilla. Sea level rise will reduce the possibility for tidal sluices to freely discharge water, further compressing windows of opportunity for the passage of...
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ftunivwagenin:oai:library.wur.nl:wurpubs/615684 2024-04-28T07:55:06+00:00 Factors influencing the downstream passage of European silver eels (Anguilla anguilla) through a tidal sluice Huisman, Jeroen B.J. Höhne, Leander Hanel, Reinhold Kuipers, Henry Schollema, Peter Paul Nagelkerke, Leopold 2023 application/pdf https://research.wur.nl/en/publications/factors-influencing-the-downstream-passage-of-european-silver-eel https://doi.org/10.1111/jfb.15398 en eng https://edepot.wur.nl/632488 https://research.wur.nl/en/publications/factors-influencing-the-downstream-passage-of-european-silver-eel doi:10.1111/jfb.15398 https://creativecommons.org/licenses/by-nc-nd/4.0/ Wageningen University & Research Journal of Fish Biology 103 (2023) 2 ISSN: 0022-1112 European eel fish migration passage behaviour tidal barriers tidal sluices Article/Letter to editor 2023 ftunivwagenin https://doi.org/10.1111/jfb.15398 2024-04-03T14:34:17Z Tidal sluices are a frequent element in the tidal regions of Europe's rivers and may hinder downstream migrating European eels Anguilla anguilla. Sea level rise will reduce the possibility for tidal sluices to freely discharge water, further compressing windows of opportunity for the passage of eels. Understanding how eels utilize the discharge events of tidal sluices and which conditions facilitate successful passage is pivotal for the design of effective fish migration measures. To investigate eel migration at a tidal sluice, acoustic receivers were placed at the tidal sluice Nieuwe Statenzijl and in its tributary of the Westerwoldse Aa, the Netherlands. Of the 30 tagged eels, 26 eels reached the tidal sluice and passage success was 100%. The mean migration speed of eels in the unobstructed part of the tributary was slow (0.14 m s−1). The eels were delayed in their migration by the sluice and delay was right-skewed distributed with most eels showing moderate delays (<2 days), while about 10% of the tagged individuals experienced extensive delays of more than 3 weeks. The number of missed sluicing events prior to successful passage was influenced by biological characteristics such as migration speed in the tributary, weight and condition. In addition, sluicing events with rapidly increasing and high maximum discharge levels increased the success rate of an individual eel to pass the sluice. Compromising sluicing duration in favour of higher and faster increasing discharge could facilitate eel migration at tidal barriers and contribute to the recovery of this endangered species. Article in Journal/Newspaper Anguilla anguilla European eel Wageningen UR (University & Research Centre): Digital Library Journal of Fish Biology |
institution |
Open Polar |
collection |
Wageningen UR (University & Research Centre): Digital Library |
op_collection_id |
ftunivwagenin |
language |
English |
topic |
European eel fish migration passage behaviour tidal barriers tidal sluices |
spellingShingle |
European eel fish migration passage behaviour tidal barriers tidal sluices Huisman, Jeroen B.J. Höhne, Leander Hanel, Reinhold Kuipers, Henry Schollema, Peter Paul Nagelkerke, Leopold Factors influencing the downstream passage of European silver eels (Anguilla anguilla) through a tidal sluice |
topic_facet |
European eel fish migration passage behaviour tidal barriers tidal sluices |
description |
Tidal sluices are a frequent element in the tidal regions of Europe's rivers and may hinder downstream migrating European eels Anguilla anguilla. Sea level rise will reduce the possibility for tidal sluices to freely discharge water, further compressing windows of opportunity for the passage of eels. Understanding how eels utilize the discharge events of tidal sluices and which conditions facilitate successful passage is pivotal for the design of effective fish migration measures. To investigate eel migration at a tidal sluice, acoustic receivers were placed at the tidal sluice Nieuwe Statenzijl and in its tributary of the Westerwoldse Aa, the Netherlands. Of the 30 tagged eels, 26 eels reached the tidal sluice and passage success was 100%. The mean migration speed of eels in the unobstructed part of the tributary was slow (0.14 m s−1). The eels were delayed in their migration by the sluice and delay was right-skewed distributed with most eels showing moderate delays (<2 days), while about 10% of the tagged individuals experienced extensive delays of more than 3 weeks. The number of missed sluicing events prior to successful passage was influenced by biological characteristics such as migration speed in the tributary, weight and condition. In addition, sluicing events with rapidly increasing and high maximum discharge levels increased the success rate of an individual eel to pass the sluice. Compromising sluicing duration in favour of higher and faster increasing discharge could facilitate eel migration at tidal barriers and contribute to the recovery of this endangered species. |
format |
Article in Journal/Newspaper |
author |
Huisman, Jeroen B.J. Höhne, Leander Hanel, Reinhold Kuipers, Henry Schollema, Peter Paul Nagelkerke, Leopold |
author_facet |
Huisman, Jeroen B.J. Höhne, Leander Hanel, Reinhold Kuipers, Henry Schollema, Peter Paul Nagelkerke, Leopold |
author_sort |
Huisman, Jeroen B.J. |
title |
Factors influencing the downstream passage of European silver eels (Anguilla anguilla) through a tidal sluice |
title_short |
Factors influencing the downstream passage of European silver eels (Anguilla anguilla) through a tidal sluice |
title_full |
Factors influencing the downstream passage of European silver eels (Anguilla anguilla) through a tidal sluice |
title_fullStr |
Factors influencing the downstream passage of European silver eels (Anguilla anguilla) through a tidal sluice |
title_full_unstemmed |
Factors influencing the downstream passage of European silver eels (Anguilla anguilla) through a tidal sluice |
title_sort |
factors influencing the downstream passage of european silver eels (anguilla anguilla) through a tidal sluice |
publishDate |
2023 |
url |
https://research.wur.nl/en/publications/factors-influencing-the-downstream-passage-of-european-silver-eel https://doi.org/10.1111/jfb.15398 |
genre |
Anguilla anguilla European eel |
genre_facet |
Anguilla anguilla European eel |
op_source |
Journal of Fish Biology 103 (2023) 2 ISSN: 0022-1112 |
op_relation |
https://edepot.wur.nl/632488 https://research.wur.nl/en/publications/factors-influencing-the-downstream-passage-of-european-silver-eel doi:10.1111/jfb.15398 |
op_rights |
https://creativecommons.org/licenses/by-nc-nd/4.0/ Wageningen University & Research |
op_doi |
https://doi.org/10.1111/jfb.15398 |
container_title |
Journal of Fish Biology |
_version_ |
1797578452480557056 |