Evaluation of a portable electrode array for a resistivity fish counter
Abstract This study aimed to develop and test an electrode array for a resistivity fish counter that could be easily installed in a small river without a weir. An electrode array consisting of three steel cables laid in parallel across the stream channel and connected to a microprocessor‐based count...
Published in: | Fisheries Management and Ecology |
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Language: | English |
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Online Access: | http://dx.doi.org/10.1111/j.1365-2400.1996.tb00137.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1365-2400.1996.tb00137.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1365-2400.1996.tb00137.x |
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crwiley:10.1111/j.1365-2400.1996.tb00137.x 2024-06-02T08:03:39+00:00 Evaluation of a portable electrode array for a resistivity fish counter SMITH, I.P. JOHNSTONE, A.D.F. DUNKLEY, D.A. 1996 http://dx.doi.org/10.1111/j.1365-2400.1996.tb00137.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1365-2400.1996.tb00137.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1365-2400.1996.tb00137.x en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Fisheries Management and Ecology volume 3, issue 2, page 129-141 ISSN 0969-997X 1365-2400 journal-article 1996 crwiley https://doi.org/10.1111/j.1365-2400.1996.tb00137.x 2024-05-03T10:37:35Z Abstract This study aimed to develop and test an electrode array for a resistivity fish counter that could be easily installed in a small river without a weir. An electrode array consisting of three steel cables laid in parallel across the stream channel and connected to a microprocessor‐based counter was tested in an Atlantic salmon, Salmo salar L., spawning tributary. The accuracy of the counter was assessed by observing fish movements with closed‐circuit television. Most salmon moving upstream were registered correctly (90% overall). Detection of downstream movement was less reliable (60% overall), as a consequence of downstream swimming behaviour. The accuracy of the downstream count was improved by tensioning the cable electrodes, but remained lower than that of the upstream count. Since salmon swam repeatedly up‐ and downstream, this discrepancy resulted in an overestimate of the net upstream count. The accuracy of the downstream count needs to be improved before a bed‐mounted electrode array could be used for routine salmon counting. Article in Journal/Newspaper Atlantic salmon Salmo salar Wiley Online Library Weir ENVELOPE(177.167,177.167,-84.983,-84.983) Fisheries Management and Ecology 3 2 129 141 |
institution |
Open Polar |
collection |
Wiley Online Library |
op_collection_id |
crwiley |
language |
English |
description |
Abstract This study aimed to develop and test an electrode array for a resistivity fish counter that could be easily installed in a small river without a weir. An electrode array consisting of three steel cables laid in parallel across the stream channel and connected to a microprocessor‐based counter was tested in an Atlantic salmon, Salmo salar L., spawning tributary. The accuracy of the counter was assessed by observing fish movements with closed‐circuit television. Most salmon moving upstream were registered correctly (90% overall). Detection of downstream movement was less reliable (60% overall), as a consequence of downstream swimming behaviour. The accuracy of the downstream count was improved by tensioning the cable electrodes, but remained lower than that of the upstream count. Since salmon swam repeatedly up‐ and downstream, this discrepancy resulted in an overestimate of the net upstream count. The accuracy of the downstream count needs to be improved before a bed‐mounted electrode array could be used for routine salmon counting. |
format |
Article in Journal/Newspaper |
author |
SMITH, I.P. JOHNSTONE, A.D.F. DUNKLEY, D.A. |
spellingShingle |
SMITH, I.P. JOHNSTONE, A.D.F. DUNKLEY, D.A. Evaluation of a portable electrode array for a resistivity fish counter |
author_facet |
SMITH, I.P. JOHNSTONE, A.D.F. DUNKLEY, D.A. |
author_sort |
SMITH, I.P. |
title |
Evaluation of a portable electrode array for a resistivity fish counter |
title_short |
Evaluation of a portable electrode array for a resistivity fish counter |
title_full |
Evaluation of a portable electrode array for a resistivity fish counter |
title_fullStr |
Evaluation of a portable electrode array for a resistivity fish counter |
title_full_unstemmed |
Evaluation of a portable electrode array for a resistivity fish counter |
title_sort |
evaluation of a portable electrode array for a resistivity fish counter |
publisher |
Wiley |
publishDate |
1996 |
url |
http://dx.doi.org/10.1111/j.1365-2400.1996.tb00137.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1365-2400.1996.tb00137.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1365-2400.1996.tb00137.x |
long_lat |
ENVELOPE(177.167,177.167,-84.983,-84.983) |
geographic |
Weir |
geographic_facet |
Weir |
genre |
Atlantic salmon Salmo salar |
genre_facet |
Atlantic salmon Salmo salar |
op_source |
Fisheries Management and Ecology volume 3, issue 2, page 129-141 ISSN 0969-997X 1365-2400 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1111/j.1365-2400.1996.tb00137.x |
container_title |
Fisheries Management and Ecology |
container_volume |
3 |
container_issue |
2 |
container_start_page |
129 |
op_container_end_page |
141 |
_version_ |
1800748244653834240 |