Effects of a surface oriented travelling screen and water abstraction practices on downstream migrating salmonidae smolts in a lowland stream
Abstract Downstream migration of immature salmonids (smolts) may be associated with severe mortalities in anthropogenically altered channels. In Pacific salmon, several investigations have suggested the use of the dominating surface orientation of smolts to improve fish by‐pass structures in large a...
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crwiley:10.1002/rra.1261 2024-06-23T07:51:24+00:00 Effects of a surface oriented travelling screen and water abstraction practices on downstream migrating salmonidae smolts in a lowland stream Svendsen, Jon C. Aarestrup, Kim Deacon, Michael G. Christensen, Rune H. B. 2009 http://dx.doi.org/10.1002/rra.1261 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Frra.1261 https://onlinelibrary.wiley.com/doi/pdf/10.1002/rra.1261 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor River Research and Applications volume 26, issue 3, page 353-361 ISSN 1535-1459 1535-1467 journal-article 2009 crwiley https://doi.org/10.1002/rra.1261 2024-06-06T04:19:47Z Abstract Downstream migration of immature salmonids (smolts) may be associated with severe mortalities in anthropogenically altered channels. In Pacific salmon, several investigations have suggested the use of the dominating surface orientation of smolts to improve fish by‐pass structures in large and deep hydroelectric reservoirs. The present study tested the use of a surface orientated travelling screen to guide Atlantic salmon ( Salmo salar L.) and brown trout ( Salmo trutta L.) smolts past a water abstraction site in a shallow lowland stream. The percentage of total discharge abstracted from the stream was included in the analyses. Indigenous migrating smolts were trapped, PIT tagged and subsequently released upstream of the water abstraction site. Releases shifted between a present or absent travelling screen. The migration success of the released smolts was evaluated using a trap situated downstream of the water abstraction site. There was no evidence that the surface oriented travelling screen had any influence on the probability of fish passing the water abstraction site. However, for both species, the probability of successful migration past the water abstraction site correlated negatively with the abstracted percentage of the total daily stream discharge. These findings may have important management implications because they suggest that short term changes in the percentage of total stream discharge abstracted may have consequences for the downstream migration success of smolts. Copyright © 2009 John Wiley & Sons, Ltd. Article in Journal/Newspaper Atlantic salmon Salmo salar Wiley Online Library Pacific River Research and Applications 26 3 353 361 |
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Wiley Online Library |
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crwiley |
language |
English |
description |
Abstract Downstream migration of immature salmonids (smolts) may be associated with severe mortalities in anthropogenically altered channels. In Pacific salmon, several investigations have suggested the use of the dominating surface orientation of smolts to improve fish by‐pass structures in large and deep hydroelectric reservoirs. The present study tested the use of a surface orientated travelling screen to guide Atlantic salmon ( Salmo salar L.) and brown trout ( Salmo trutta L.) smolts past a water abstraction site in a shallow lowland stream. The percentage of total discharge abstracted from the stream was included in the analyses. Indigenous migrating smolts were trapped, PIT tagged and subsequently released upstream of the water abstraction site. Releases shifted between a present or absent travelling screen. The migration success of the released smolts was evaluated using a trap situated downstream of the water abstraction site. There was no evidence that the surface oriented travelling screen had any influence on the probability of fish passing the water abstraction site. However, for both species, the probability of successful migration past the water abstraction site correlated negatively with the abstracted percentage of the total daily stream discharge. These findings may have important management implications because they suggest that short term changes in the percentage of total stream discharge abstracted may have consequences for the downstream migration success of smolts. Copyright © 2009 John Wiley & Sons, Ltd. |
format |
Article in Journal/Newspaper |
author |
Svendsen, Jon C. Aarestrup, Kim Deacon, Michael G. Christensen, Rune H. B. |
spellingShingle |
Svendsen, Jon C. Aarestrup, Kim Deacon, Michael G. Christensen, Rune H. B. Effects of a surface oriented travelling screen and water abstraction practices on downstream migrating salmonidae smolts in a lowland stream |
author_facet |
Svendsen, Jon C. Aarestrup, Kim Deacon, Michael G. Christensen, Rune H. B. |
author_sort |
Svendsen, Jon C. |
title |
Effects of a surface oriented travelling screen and water abstraction practices on downstream migrating salmonidae smolts in a lowland stream |
title_short |
Effects of a surface oriented travelling screen and water abstraction practices on downstream migrating salmonidae smolts in a lowland stream |
title_full |
Effects of a surface oriented travelling screen and water abstraction practices on downstream migrating salmonidae smolts in a lowland stream |
title_fullStr |
Effects of a surface oriented travelling screen and water abstraction practices on downstream migrating salmonidae smolts in a lowland stream |
title_full_unstemmed |
Effects of a surface oriented travelling screen and water abstraction practices on downstream migrating salmonidae smolts in a lowland stream |
title_sort |
effects of a surface oriented travelling screen and water abstraction practices on downstream migrating salmonidae smolts in a lowland stream |
publisher |
Wiley |
publishDate |
2009 |
url |
http://dx.doi.org/10.1002/rra.1261 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Frra.1261 https://onlinelibrary.wiley.com/doi/pdf/10.1002/rra.1261 |
geographic |
Pacific |
geographic_facet |
Pacific |
genre |
Atlantic salmon Salmo salar |
genre_facet |
Atlantic salmon Salmo salar |
op_source |
River Research and Applications volume 26, issue 3, page 353-361 ISSN 1535-1459 1535-1467 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1002/rra.1261 |
container_title |
River Research and Applications |
container_volume |
26 |
container_issue |
3 |
container_start_page |
353 |
op_container_end_page |
361 |
_version_ |
1802642492267429888 |