Use of acoustics to enhance the efficiency of physical screens designed to protect downstream moving European eel (Anguilla anguilla)
European eel (Anguilla anguilla) are vulnerable to entrainment at a variety of man-made intakes, including those that lead to hydropower turbines or other abstraction points. Two experiments were conducted to investigate the potential for acoustic stimuli to improve the efficiency of a vertical bar-...
Published in: | Fisheries Management and Ecology |
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Language: | English |
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ftsouthampton:oai:eprints.soton.ac.uk:432504 2023-08-27T04:03:59+02:00 Use of acoustics to enhance the efficiency of physical screens designed to protect downstream moving European eel (Anguilla anguilla) Deleau, Mathias J. C. White, Paul R. Peirson, Graeme Leighton, Timothy G. Kemp, Paul S. 2019-07-10 text https://eprints.soton.ac.uk/432504/ https://eprints.soton.ac.uk/432504/1/deleau_kemp_paper.docx https://eprints.soton.ac.uk/432504/2/Main_Text_Final_compressed.docx en English eng https://eprints.soton.ac.uk/432504/1/deleau_kemp_paper.docx https://eprints.soton.ac.uk/432504/2/Main_Text_Final_compressed.docx Deleau, Mathias J. C., White, Paul R., Peirson, Graeme, Leighton, Timothy G. and Kemp, Paul S. (2019) Use of acoustics to enhance the efficiency of physical screens designed to protect downstream moving European eel (Anguilla anguilla). Fisheries Management and Ecology, 27 (1), 1-9. (doi:10.1111/fme.12362 <http://dx.doi.org/10.1111/fme.12362>). cc_by_nc_nd_4 Article PeerReviewed 2019 ftsouthampton https://doi.org/10.1111/fme.12362 2023-08-03T22:24:02Z European eel (Anguilla anguilla) are vulnerable to entrainment at a variety of man-made intakes, including those that lead to hydropower turbines or other abstraction points. Two experiments were conducted to investigate the potential for acoustic stimuli to improve the efficiency of a vertical bar-screen to guide downstream moving eel. Three underwater speakers were installed along the channel wall of an external flume, upstream of the screen. In first experiment (1), screen guidance efficiency recorded in the presence (treatment) and absence (control) of a continuous broadband stimulus was individually compared between fish from to respective groups. Adopting a “before-after” design, the second experiment (2) assessed individually the guidance of control eel from the group previously used in experiment 1 when exposed to a 100 Hz pulse. The majority of eel reached the bypass in both experiments with only three passing through the screen during the controls against one during each acoustic treatment. Rejection of the area adjacent to the speakers was more common during the acoustic treatment with eel moving past the speakers more rapidly in the presence of sound. The results suggest that employing acoustic stimuli enhances the guidance efficiency of physical screens. Article in Journal/Newspaper Anguilla anguilla University of Southampton: e-Prints Soton Fisheries Management and Ecology 27 1 1 9 |
institution |
Open Polar |
collection |
University of Southampton: e-Prints Soton |
op_collection_id |
ftsouthampton |
language |
English |
description |
European eel (Anguilla anguilla) are vulnerable to entrainment at a variety of man-made intakes, including those that lead to hydropower turbines or other abstraction points. Two experiments were conducted to investigate the potential for acoustic stimuli to improve the efficiency of a vertical bar-screen to guide downstream moving eel. Three underwater speakers were installed along the channel wall of an external flume, upstream of the screen. In first experiment (1), screen guidance efficiency recorded in the presence (treatment) and absence (control) of a continuous broadband stimulus was individually compared between fish from to respective groups. Adopting a “before-after” design, the second experiment (2) assessed individually the guidance of control eel from the group previously used in experiment 1 when exposed to a 100 Hz pulse. The majority of eel reached the bypass in both experiments with only three passing through the screen during the controls against one during each acoustic treatment. Rejection of the area adjacent to the speakers was more common during the acoustic treatment with eel moving past the speakers more rapidly in the presence of sound. The results suggest that employing acoustic stimuli enhances the guidance efficiency of physical screens. |
format |
Article in Journal/Newspaper |
author |
Deleau, Mathias J. C. White, Paul R. Peirson, Graeme Leighton, Timothy G. Kemp, Paul S. |
spellingShingle |
Deleau, Mathias J. C. White, Paul R. Peirson, Graeme Leighton, Timothy G. Kemp, Paul S. Use of acoustics to enhance the efficiency of physical screens designed to protect downstream moving European eel (Anguilla anguilla) |
author_facet |
Deleau, Mathias J. C. White, Paul R. Peirson, Graeme Leighton, Timothy G. Kemp, Paul S. |
author_sort |
Deleau, Mathias J. C. |
title |
Use of acoustics to enhance the efficiency of physical screens designed to protect downstream moving European eel (Anguilla anguilla) |
title_short |
Use of acoustics to enhance the efficiency of physical screens designed to protect downstream moving European eel (Anguilla anguilla) |
title_full |
Use of acoustics to enhance the efficiency of physical screens designed to protect downstream moving European eel (Anguilla anguilla) |
title_fullStr |
Use of acoustics to enhance the efficiency of physical screens designed to protect downstream moving European eel (Anguilla anguilla) |
title_full_unstemmed |
Use of acoustics to enhance the efficiency of physical screens designed to protect downstream moving European eel (Anguilla anguilla) |
title_sort |
use of acoustics to enhance the efficiency of physical screens designed to protect downstream moving european eel (anguilla anguilla) |
publishDate |
2019 |
url |
https://eprints.soton.ac.uk/432504/ https://eprints.soton.ac.uk/432504/1/deleau_kemp_paper.docx https://eprints.soton.ac.uk/432504/2/Main_Text_Final_compressed.docx |
genre |
Anguilla anguilla |
genre_facet |
Anguilla anguilla |
op_relation |
https://eprints.soton.ac.uk/432504/1/deleau_kemp_paper.docx https://eprints.soton.ac.uk/432504/2/Main_Text_Final_compressed.docx Deleau, Mathias J. C., White, Paul R., Peirson, Graeme, Leighton, Timothy G. and Kemp, Paul S. (2019) Use of acoustics to enhance the efficiency of physical screens designed to protect downstream moving European eel (Anguilla anguilla). Fisheries Management and Ecology, 27 (1), 1-9. (doi:10.1111/fme.12362 <http://dx.doi.org/10.1111/fme.12362>). |
op_rights |
cc_by_nc_nd_4 |
op_doi |
https://doi.org/10.1111/fme.12362 |
container_title |
Fisheries Management and Ecology |
container_volume |
27 |
container_issue |
1 |
container_start_page |
1 |
op_container_end_page |
9 |
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1775348129610072064 |