Optimising Atlantic salmon smolt survival by use of hydropower simulation modelling in a regulated river
Abstract Studies on downstream passage of diadromous fishes in northern E urope are rare, and in N orway, the problem is strongly linked to demands for efficient hydropower production. The current study explored mitigating measures using a hydropower simulation model for A tlantic salmon, S almo sal...
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Language: | English |
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crwiley:10.1111/fme.12044 2024-06-02T08:03:40+00:00 Optimising Atlantic salmon smolt survival by use of hydropower simulation modelling in a regulated river Fjeldstad, H.‐P. Alfredsen, K. Boissy, T. 2013 http://dx.doi.org/10.1111/fme.12044 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Ffme.12044 https://onlinelibrary.wiley.com/doi/pdf/10.1111/fme.12044 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Fisheries Management and Ecology volume 21, issue 1, page 22-31 ISSN 0969-997X 1365-2400 journal-article 2013 crwiley https://doi.org/10.1111/fme.12044 2024-05-03T11:47:00Z Abstract Studies on downstream passage of diadromous fishes in northern E urope are rare, and in N orway, the problem is strongly linked to demands for efficient hydropower production. The current study explored mitigating measures using a hydropower simulation model for A tlantic salmon, S almo salar L., smolt migration. Migration pattern and route choice at a hydropower intake for 22 years were described for a river in southern N orway, based on simulated data for discharge and water temperature. Subsequently, the potential for controlling the migration pattern and smolt routing past the intake by altering release patterns from the reservoirs was tested. Modelling of a general annual increase in bypass discharge from 3 to 15 m 3 s −1 increased average bypass migration from 30 to 43% at the cost of 14 € per fish. Individual release schedules from reservoirs for selected years indicated that bypass rates could be increased to 80% at an average cost of 4.5 € per fish and 2.2 € in the best years. Mitigating measures presumably depend on the specific site, but the methods developed in this study represent a general technique for evaluating increased smolt survival past hydropower intakes. Article in Journal/Newspaper Atlantic salmon Wiley Online Library Almo ENVELOPE(15.306,15.306,66.954,66.954) Fisheries Management and Ecology 21 1 22 31 |
institution |
Open Polar |
collection |
Wiley Online Library |
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crwiley |
language |
English |
description |
Abstract Studies on downstream passage of diadromous fishes in northern E urope are rare, and in N orway, the problem is strongly linked to demands for efficient hydropower production. The current study explored mitigating measures using a hydropower simulation model for A tlantic salmon, S almo salar L., smolt migration. Migration pattern and route choice at a hydropower intake for 22 years were described for a river in southern N orway, based on simulated data for discharge and water temperature. Subsequently, the potential for controlling the migration pattern and smolt routing past the intake by altering release patterns from the reservoirs was tested. Modelling of a general annual increase in bypass discharge from 3 to 15 m 3 s −1 increased average bypass migration from 30 to 43% at the cost of 14 € per fish. Individual release schedules from reservoirs for selected years indicated that bypass rates could be increased to 80% at an average cost of 4.5 € per fish and 2.2 € in the best years. Mitigating measures presumably depend on the specific site, but the methods developed in this study represent a general technique for evaluating increased smolt survival past hydropower intakes. |
format |
Article in Journal/Newspaper |
author |
Fjeldstad, H.‐P. Alfredsen, K. Boissy, T. |
spellingShingle |
Fjeldstad, H.‐P. Alfredsen, K. Boissy, T. Optimising Atlantic salmon smolt survival by use of hydropower simulation modelling in a regulated river |
author_facet |
Fjeldstad, H.‐P. Alfredsen, K. Boissy, T. |
author_sort |
Fjeldstad, H.‐P. |
title |
Optimising Atlantic salmon smolt survival by use of hydropower simulation modelling in a regulated river |
title_short |
Optimising Atlantic salmon smolt survival by use of hydropower simulation modelling in a regulated river |
title_full |
Optimising Atlantic salmon smolt survival by use of hydropower simulation modelling in a regulated river |
title_fullStr |
Optimising Atlantic salmon smolt survival by use of hydropower simulation modelling in a regulated river |
title_full_unstemmed |
Optimising Atlantic salmon smolt survival by use of hydropower simulation modelling in a regulated river |
title_sort |
optimising atlantic salmon smolt survival by use of hydropower simulation modelling in a regulated river |
publisher |
Wiley |
publishDate |
2013 |
url |
http://dx.doi.org/10.1111/fme.12044 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Ffme.12044 https://onlinelibrary.wiley.com/doi/pdf/10.1111/fme.12044 |
long_lat |
ENVELOPE(15.306,15.306,66.954,66.954) |
geographic |
Almo |
geographic_facet |
Almo |
genre |
Atlantic salmon |
genre_facet |
Atlantic salmon |
op_source |
Fisheries Management and Ecology volume 21, issue 1, page 22-31 ISSN 0969-997X 1365-2400 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1111/fme.12044 |
container_title |
Fisheries Management and Ecology |
container_volume |
21 |
container_issue |
1 |
container_start_page |
22 |
op_container_end_page |
31 |
_version_ |
1800748267320901632 |