Return migration of adult Atlantic salmon, Salmo salar, in relation to water diverted through a power station
Abstract The migration of Atlantic salmon, Salmo salar L., returning to the River Suldalslågen, Norway, was studied in relation to redirection of freshwater flow through a power station. The outlet of the power station is situated in the Hylsfjord, a fjord adjacent to the river mouth. Seventy‐two sa...
Published in: | Fisheries Management and Ecology |
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Language: | English |
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crwiley:10.1046/j.1365-2400.2003.00324.x 2024-09-15T17:56:15+00:00 Return migration of adult Atlantic salmon, Salmo salar, in relation to water diverted through a power station Thorstad, E. B. Økland, F. Johnsen, B. O. Næsje, T. F. 2003 http://dx.doi.org/10.1046/j.1365-2400.2003.00324.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1046%2Fj.1365-2400.2003.00324.x https://onlinelibrary.wiley.com/doi/pdf/10.1046/j.1365-2400.2003.00324.x en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Fisheries Management and Ecology volume 10, issue 1, page 13-22 ISSN 0969-997X 1365-2400 journal-article 2003 crwiley https://doi.org/10.1046/j.1365-2400.2003.00324.x 2024-08-27T04:29:12Z Abstract The migration of Atlantic salmon, Salmo salar L., returning to the River Suldalslågen, Norway, was studied in relation to redirection of freshwater flow through a power station. The outlet of the power station is situated in the Hylsfjord, a fjord adjacent to the river mouth. Seventy‐two salmon were tagged with acoustic transmitters, released in the outer part of the fjord system and automatically recorded when entering the Hylsfjord or the river. Data were collected during one period when the power station was running and two periods when the power station was closed. The release of water from the power station did not greatly attract the salmon during their return migration. Proportions of salmon entering the river or time from release to entering the river did not differ among salmon tagged in the different periods. The salmon were recorded in the Hylsfjord both when the power station was running and closed and there were no differences in number of times, number of days or hours recorded in the Hylsfjord among salmon tagged in the three periods. The only significant difference found among periods was duration of continuous stays in the inner part of the Hylsfjord. This may indicate a slight attraction to the freshwater release, but the difference seems small (1.8 vs. 0.7 h) compared with the time the fish stayed in the fjord system before entering the river (16–85 days). Article in Journal/Newspaper Atlantic salmon Salmo salar Wiley Online Library Fisheries Management and Ecology 10 1 13 22 |
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Wiley Online Library |
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crwiley |
language |
English |
description |
Abstract The migration of Atlantic salmon, Salmo salar L., returning to the River Suldalslågen, Norway, was studied in relation to redirection of freshwater flow through a power station. The outlet of the power station is situated in the Hylsfjord, a fjord adjacent to the river mouth. Seventy‐two salmon were tagged with acoustic transmitters, released in the outer part of the fjord system and automatically recorded when entering the Hylsfjord or the river. Data were collected during one period when the power station was running and two periods when the power station was closed. The release of water from the power station did not greatly attract the salmon during their return migration. Proportions of salmon entering the river or time from release to entering the river did not differ among salmon tagged in the different periods. The salmon were recorded in the Hylsfjord both when the power station was running and closed and there were no differences in number of times, number of days or hours recorded in the Hylsfjord among salmon tagged in the three periods. The only significant difference found among periods was duration of continuous stays in the inner part of the Hylsfjord. This may indicate a slight attraction to the freshwater release, but the difference seems small (1.8 vs. 0.7 h) compared with the time the fish stayed in the fjord system before entering the river (16–85 days). |
format |
Article in Journal/Newspaper |
author |
Thorstad, E. B. Økland, F. Johnsen, B. O. Næsje, T. F. |
spellingShingle |
Thorstad, E. B. Økland, F. Johnsen, B. O. Næsje, T. F. Return migration of adult Atlantic salmon, Salmo salar, in relation to water diverted through a power station |
author_facet |
Thorstad, E. B. Økland, F. Johnsen, B. O. Næsje, T. F. |
author_sort |
Thorstad, E. B. |
title |
Return migration of adult Atlantic salmon, Salmo salar, in relation to water diverted through a power station |
title_short |
Return migration of adult Atlantic salmon, Salmo salar, in relation to water diverted through a power station |
title_full |
Return migration of adult Atlantic salmon, Salmo salar, in relation to water diverted through a power station |
title_fullStr |
Return migration of adult Atlantic salmon, Salmo salar, in relation to water diverted through a power station |
title_full_unstemmed |
Return migration of adult Atlantic salmon, Salmo salar, in relation to water diverted through a power station |
title_sort |
return migration of adult atlantic salmon, salmo salar, in relation to water diverted through a power station |
publisher |
Wiley |
publishDate |
2003 |
url |
http://dx.doi.org/10.1046/j.1365-2400.2003.00324.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1046%2Fj.1365-2400.2003.00324.x https://onlinelibrary.wiley.com/doi/pdf/10.1046/j.1365-2400.2003.00324.x |
genre |
Atlantic salmon Salmo salar |
genre_facet |
Atlantic salmon Salmo salar |
op_source |
Fisheries Management and Ecology volume 10, issue 1, page 13-22 ISSN 0969-997X 1365-2400 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1046/j.1365-2400.2003.00324.x |
container_title |
Fisheries Management and Ecology |
container_volume |
10 |
container_issue |
1 |
container_start_page |
13 |
op_container_end_page |
22 |
_version_ |
1810432468038189056 |