Shipping canals on the downstream migration route of European eel (Anguilla anguilla) : opportunity or bottleneck?
Migrating fish species are worldwide in decline due to several global changes and threats. Among these causes are man-made structures blocking their freshwater migration routes. Shipping canals with navigation locks play a dual role in this. These canals can serve as an important migration route, of...
Published in: | Ecology of Freshwater Fish |
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Language: | English |
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Online Access: | https://biblio.ugent.be/publication/8684897 http://hdl.handle.net/1854/LU-8684897 https://doi.org/10.1111/eff.12565 https://biblio.ugent.be/publication/8684897/file/8684900 |
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ftunivgent:oai:archive.ugent.be:8684897 2023-06-11T04:03:44+02:00 Shipping canals on the downstream migration route of European eel (Anguilla anguilla) : opportunity or bottleneck? Vergeynst, Jenna Pauwels, Ine Baeyens, Raf Mouton, Ans De Mulder, Tom Nopens, Ingmar 2021 application/pdf https://biblio.ugent.be/publication/8684897 http://hdl.handle.net/1854/LU-8684897 https://doi.org/10.1111/eff.12565 https://biblio.ugent.be/publication/8684897/file/8684900 eng eng https://biblio.ugent.be/publication/8684897 http://hdl.handle.net/1854/LU-8684897 http://dx.doi.org/10.1111/eff.12565 https://biblio.ugent.be/publication/8684897/file/8684900 No license (in copyright) info:eu-repo/semantics/closedAccess ECOLOGY OF FRESHWATER FISH ISSN: 0906-6691 ISSN: 1600-0633 Biology and Life Sciences Ecology Aquatic Science Evolution Behavior and Systematics computational fluid dynamics downstream fish migration European eel fish behaviour navigation locks shipping canal SILVER EELS FISH L journalArticle info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion 2021 ftunivgent https://doi.org/10.1111/eff.12565 2023-05-10T22:47:52Z Migrating fish species are worldwide in decline due to several global changes and threats. Among these causes are man-made structures blocking their freshwater migration routes. Shipping canals with navigation locks play a dual role in this. These canals can serve as an important migration route, offering a short cut between freshwater and the sea. In contrast, the navigation locks may act as barriers to migration, causing delays and migration failures. To better understand these issues for downstream migrating fish, we studied the behaviour of European eels (Anguilla anguilla) in the Albert Canal at two scales. The mid-scale contained a 27-km canal pound confined by two navigation lock complexes, in which we released and tracked 86 silver eels. The small scale was a 200 x 150 m area just in front of the most downstream complex of the canal pound, where we analysed the behaviour of 33 eels in relation to the flow field resulting from a computational fluid dynamics (CFD) model. This paper discusses the factors influencing fish behaviour, and the relation between these behaviours on both scales. On the mid-scale, migration efficiency resulted from a combination of intrinsic behaviour and flow in the canal pound. Also on the small scale, intrinsic behaviour influenced the success to pass the navigation lock. Increasing the flow would create more attraction and passage opportunities and hence facilitate migration through shipping canals, but only if this flow guides the fish through safe passage routes. Article in Journal/Newspaper Anguilla anguilla European eel Ghent University Academic Bibliography Ecology of Freshwater Fish 30 1 73 87 |
institution |
Open Polar |
collection |
Ghent University Academic Bibliography |
op_collection_id |
ftunivgent |
language |
English |
topic |
Biology and Life Sciences Ecology Aquatic Science Evolution Behavior and Systematics computational fluid dynamics downstream fish migration European eel fish behaviour navigation locks shipping canal SILVER EELS FISH L |
spellingShingle |
Biology and Life Sciences Ecology Aquatic Science Evolution Behavior and Systematics computational fluid dynamics downstream fish migration European eel fish behaviour navigation locks shipping canal SILVER EELS FISH L Vergeynst, Jenna Pauwels, Ine Baeyens, Raf Mouton, Ans De Mulder, Tom Nopens, Ingmar Shipping canals on the downstream migration route of European eel (Anguilla anguilla) : opportunity or bottleneck? |
topic_facet |
Biology and Life Sciences Ecology Aquatic Science Evolution Behavior and Systematics computational fluid dynamics downstream fish migration European eel fish behaviour navigation locks shipping canal SILVER EELS FISH L |
description |
Migrating fish species are worldwide in decline due to several global changes and threats. Among these causes are man-made structures blocking their freshwater migration routes. Shipping canals with navigation locks play a dual role in this. These canals can serve as an important migration route, offering a short cut between freshwater and the sea. In contrast, the navigation locks may act as barriers to migration, causing delays and migration failures. To better understand these issues for downstream migrating fish, we studied the behaviour of European eels (Anguilla anguilla) in the Albert Canal at two scales. The mid-scale contained a 27-km canal pound confined by two navigation lock complexes, in which we released and tracked 86 silver eels. The small scale was a 200 x 150 m area just in front of the most downstream complex of the canal pound, where we analysed the behaviour of 33 eels in relation to the flow field resulting from a computational fluid dynamics (CFD) model. This paper discusses the factors influencing fish behaviour, and the relation between these behaviours on both scales. On the mid-scale, migration efficiency resulted from a combination of intrinsic behaviour and flow in the canal pound. Also on the small scale, intrinsic behaviour influenced the success to pass the navigation lock. Increasing the flow would create more attraction and passage opportunities and hence facilitate migration through shipping canals, but only if this flow guides the fish through safe passage routes. |
format |
Article in Journal/Newspaper |
author |
Vergeynst, Jenna Pauwels, Ine Baeyens, Raf Mouton, Ans De Mulder, Tom Nopens, Ingmar |
author_facet |
Vergeynst, Jenna Pauwels, Ine Baeyens, Raf Mouton, Ans De Mulder, Tom Nopens, Ingmar |
author_sort |
Vergeynst, Jenna |
title |
Shipping canals on the downstream migration route of European eel (Anguilla anguilla) : opportunity or bottleneck? |
title_short |
Shipping canals on the downstream migration route of European eel (Anguilla anguilla) : opportunity or bottleneck? |
title_full |
Shipping canals on the downstream migration route of European eel (Anguilla anguilla) : opportunity or bottleneck? |
title_fullStr |
Shipping canals on the downstream migration route of European eel (Anguilla anguilla) : opportunity or bottleneck? |
title_full_unstemmed |
Shipping canals on the downstream migration route of European eel (Anguilla anguilla) : opportunity or bottleneck? |
title_sort |
shipping canals on the downstream migration route of european eel (anguilla anguilla) : opportunity or bottleneck? |
publishDate |
2021 |
url |
https://biblio.ugent.be/publication/8684897 http://hdl.handle.net/1854/LU-8684897 https://doi.org/10.1111/eff.12565 https://biblio.ugent.be/publication/8684897/file/8684900 |
genre |
Anguilla anguilla European eel |
genre_facet |
Anguilla anguilla European eel |
op_source |
ECOLOGY OF FRESHWATER FISH ISSN: 0906-6691 ISSN: 1600-0633 |
op_relation |
https://biblio.ugent.be/publication/8684897 http://hdl.handle.net/1854/LU-8684897 http://dx.doi.org/10.1111/eff.12565 https://biblio.ugent.be/publication/8684897/file/8684900 |
op_rights |
No license (in copyright) info:eu-repo/semantics/closedAccess |
op_doi |
https://doi.org/10.1111/eff.12565 |
container_title |
Ecology of Freshwater Fish |
container_volume |
30 |
container_issue |
1 |
container_start_page |
73 |
op_container_end_page |
87 |
_version_ |
1768382562322874368 |