Modelling of environmental flow options for optimal Atlantic salmon, Salmo salar, embryo survival during hydropeaking
Recent findings on the causes of Atlantic salmon embryo mortality during winter in a hydropeaking river suggest that long duration drawdowns during very cold periods are the most likely cause of mortality in the ramping zone. This paper presents a framework in which thresholds for optimal embryo sur...
Published in: | Fisheries Management and Ecology |
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Language: | English |
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Online Access: | http://hdl.handle.net/11250/2481053 https://doi.org/10.1111/fme.12097 |
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ftntnutrondheimi:oai:ntnuopen.ntnu.no:11250/2481053 2023-05-15T15:30:51+02:00 Modelling of environmental flow options for optimal Atlantic salmon, Salmo salar, embryo survival during hydropeaking Casas-Mulet, Roser Alfredsen, Knut Killingtveit, Ånund 2014 http://hdl.handle.net/11250/2481053 https://doi.org/10.1111/fme.12097 eng eng Wiley Norges forskningsråd: 193818 Fisheries Management and Ecology. 2014, 21 (6), 480-490. urn:issn:0969-997X http://hdl.handle.net/11250/2481053 https://doi.org/10.1111/fme.12097 cristin:1168568 480-490 21 Fisheries Management and Ecology 6 Journal article Peer reviewed 2014 ftntnutrondheimi https://doi.org/10.1111/fme.12097 2019-09-17T06:53:33Z Recent findings on the causes of Atlantic salmon embryo mortality during winter in a hydropeaking river suggest that long duration drawdowns during very cold periods are the most likely cause of mortality in the ramping zone. This paper presents a framework in which thresholds for optimal embryo survival at the microscale are linked to physical habitat requirements at the mesoscale and integrated into alternative hydropower operations at the catchment scale. The connections within this framework are derived from a one-dimensional hydraulic model at the mesoscale and a hydropower simulation programme at the catchment scale. The economic costs and feasibility of several alternative options for hydropeaking operation that would comply with ecological requirements for optimal survival of embryos were evaluated. A method to assess a wide range of alternative hydropower options that considers key factors to mitigate the conflicting requirements of ecological targets, technical feasibility and economics is presented. Targeted alternative environmental flow releases to meet specific ecological objectives are often more effective than general operational rules to comply with legislation. The development of well-informed and targeted mitigation strategies is important for future environmental hydropower management. acceptedVersion This is the peer reviewed version of the following article: [Modelling of environmental flow options for optimal Atlantic salmon, Salmo salar, embryo survival during hydropeaking], which has been published in final form at [http://onlinelibrary.wiley.com/doi/10.1111/fme.12097/abstract]. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Self-Archiving. Article in Journal/Newspaper Atlantic salmon Salmo salar NTNU Open Archive (Norwegian University of Science and Technology) Fisheries Management and Ecology 21 6 480 490 |
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NTNU Open Archive (Norwegian University of Science and Technology) |
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ftntnutrondheimi |
language |
English |
description |
Recent findings on the causes of Atlantic salmon embryo mortality during winter in a hydropeaking river suggest that long duration drawdowns during very cold periods are the most likely cause of mortality in the ramping zone. This paper presents a framework in which thresholds for optimal embryo survival at the microscale are linked to physical habitat requirements at the mesoscale and integrated into alternative hydropower operations at the catchment scale. The connections within this framework are derived from a one-dimensional hydraulic model at the mesoscale and a hydropower simulation programme at the catchment scale. The economic costs and feasibility of several alternative options for hydropeaking operation that would comply with ecological requirements for optimal survival of embryos were evaluated. A method to assess a wide range of alternative hydropower options that considers key factors to mitigate the conflicting requirements of ecological targets, technical feasibility and economics is presented. Targeted alternative environmental flow releases to meet specific ecological objectives are often more effective than general operational rules to comply with legislation. The development of well-informed and targeted mitigation strategies is important for future environmental hydropower management. acceptedVersion This is the peer reviewed version of the following article: [Modelling of environmental flow options for optimal Atlantic salmon, Salmo salar, embryo survival during hydropeaking], which has been published in final form at [http://onlinelibrary.wiley.com/doi/10.1111/fme.12097/abstract]. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Self-Archiving. |
format |
Article in Journal/Newspaper |
author |
Casas-Mulet, Roser Alfredsen, Knut Killingtveit, Ånund |
spellingShingle |
Casas-Mulet, Roser Alfredsen, Knut Killingtveit, Ånund Modelling of environmental flow options for optimal Atlantic salmon, Salmo salar, embryo survival during hydropeaking |
author_facet |
Casas-Mulet, Roser Alfredsen, Knut Killingtveit, Ånund |
author_sort |
Casas-Mulet, Roser |
title |
Modelling of environmental flow options for optimal Atlantic salmon, Salmo salar, embryo survival during hydropeaking |
title_short |
Modelling of environmental flow options for optimal Atlantic salmon, Salmo salar, embryo survival during hydropeaking |
title_full |
Modelling of environmental flow options for optimal Atlantic salmon, Salmo salar, embryo survival during hydropeaking |
title_fullStr |
Modelling of environmental flow options for optimal Atlantic salmon, Salmo salar, embryo survival during hydropeaking |
title_full_unstemmed |
Modelling of environmental flow options for optimal Atlantic salmon, Salmo salar, embryo survival during hydropeaking |
title_sort |
modelling of environmental flow options for optimal atlantic salmon, salmo salar, embryo survival during hydropeaking |
publisher |
Wiley |
publishDate |
2014 |
url |
http://hdl.handle.net/11250/2481053 https://doi.org/10.1111/fme.12097 |
genre |
Atlantic salmon Salmo salar |
genre_facet |
Atlantic salmon Salmo salar |
op_source |
480-490 21 Fisheries Management and Ecology 6 |
op_relation |
Norges forskningsråd: 193818 Fisheries Management and Ecology. 2014, 21 (6), 480-490. urn:issn:0969-997X http://hdl.handle.net/11250/2481053 https://doi.org/10.1111/fme.12097 cristin:1168568 |
op_doi |
https://doi.org/10.1111/fme.12097 |
container_title |
Fisheries Management and Ecology |
container_volume |
21 |
container_issue |
6 |
container_start_page |
480 |
op_container_end_page |
490 |
_version_ |
1766361327450718208 |