Habitat characteristics affecting occurrence of a fluvial species in a watershed altered by a large reservoir
Abstract Flooding river valleys following construction of dams restrict fluvial environments to reaches that were formerly headwaters. Whether remaining habitat is suitable for all life stages of fluvial species is poorly understood. A fluvial species, A rctic grayling T hymallus arcticus , showed a...
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crwiley:10.1111/eff.12092 2024-06-02T08:00:11+00:00 Habitat characteristics affecting occurrence of a fluvial species in a watershed altered by a large reservoir Hawkshaw, Sarah C. F. Gillingham, Michael P. Shrimpton, J. Mark 2013 http://dx.doi.org/10.1111/eff.12092 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Feff.12092 https://onlinelibrary.wiley.com/doi/pdf/10.1111/eff.12092 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Ecology of Freshwater Fish volume 23, issue 3, page 383-394 ISSN 0906-6691 1600-0633 journal-article 2013 crwiley https://doi.org/10.1111/eff.12092 2024-05-03T10:35:14Z Abstract Flooding river valleys following construction of dams restrict fluvial environments to reaches that were formerly headwaters. Whether remaining habitat is suitable for all life stages of fluvial species is poorly understood. A fluvial species, A rctic grayling T hymallus arcticus , showed a dramatic decline following flooding of the Upper Peace River and the formation of the Williston Reservoir. We related landscape and field site‐specific features with occurrence of juvenile Arctic grayling using an information theoretic approach. For the landscape model, an association was identified between stream order and Arctic grayling occurrence although stream order alone was a poor predictor. A positive association between juvenile Arctic grayling occurrence and distance from the Williston reservoir and stream order, as well as a negative association with water temperature and temperature variance, was deemed important for the field site model. Both modelling approaches indicated size of stream system to be an important influence on occurrence of juvenile grayling in the Williston watershed. River length required for suitable river habitat for salmonids has not previously been identified, but should be factored into future management plans when evaluating the impact of proposed hydroelectric dams and subsequent flooding of river systems. Article in Journal/Newspaper Arctic grayling Arctic Wiley Online Library Arctic Ecology of Freshwater Fish 23 3 383 394 |
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Open Polar |
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Wiley Online Library |
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crwiley |
language |
English |
description |
Abstract Flooding river valleys following construction of dams restrict fluvial environments to reaches that were formerly headwaters. Whether remaining habitat is suitable for all life stages of fluvial species is poorly understood. A fluvial species, A rctic grayling T hymallus arcticus , showed a dramatic decline following flooding of the Upper Peace River and the formation of the Williston Reservoir. We related landscape and field site‐specific features with occurrence of juvenile Arctic grayling using an information theoretic approach. For the landscape model, an association was identified between stream order and Arctic grayling occurrence although stream order alone was a poor predictor. A positive association between juvenile Arctic grayling occurrence and distance from the Williston reservoir and stream order, as well as a negative association with water temperature and temperature variance, was deemed important for the field site model. Both modelling approaches indicated size of stream system to be an important influence on occurrence of juvenile grayling in the Williston watershed. River length required for suitable river habitat for salmonids has not previously been identified, but should be factored into future management plans when evaluating the impact of proposed hydroelectric dams and subsequent flooding of river systems. |
format |
Article in Journal/Newspaper |
author |
Hawkshaw, Sarah C. F. Gillingham, Michael P. Shrimpton, J. Mark |
spellingShingle |
Hawkshaw, Sarah C. F. Gillingham, Michael P. Shrimpton, J. Mark Habitat characteristics affecting occurrence of a fluvial species in a watershed altered by a large reservoir |
author_facet |
Hawkshaw, Sarah C. F. Gillingham, Michael P. Shrimpton, J. Mark |
author_sort |
Hawkshaw, Sarah C. F. |
title |
Habitat characteristics affecting occurrence of a fluvial species in a watershed altered by a large reservoir |
title_short |
Habitat characteristics affecting occurrence of a fluvial species in a watershed altered by a large reservoir |
title_full |
Habitat characteristics affecting occurrence of a fluvial species in a watershed altered by a large reservoir |
title_fullStr |
Habitat characteristics affecting occurrence of a fluvial species in a watershed altered by a large reservoir |
title_full_unstemmed |
Habitat characteristics affecting occurrence of a fluvial species in a watershed altered by a large reservoir |
title_sort |
habitat characteristics affecting occurrence of a fluvial species in a watershed altered by a large reservoir |
publisher |
Wiley |
publishDate |
2013 |
url |
http://dx.doi.org/10.1111/eff.12092 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Feff.12092 https://onlinelibrary.wiley.com/doi/pdf/10.1111/eff.12092 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic grayling Arctic |
genre_facet |
Arctic grayling Arctic |
op_source |
Ecology of Freshwater Fish volume 23, issue 3, page 383-394 ISSN 0906-6691 1600-0633 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1111/eff.12092 |
container_title |
Ecology of Freshwater Fish |
container_volume |
23 |
container_issue |
3 |
container_start_page |
383 |
op_container_end_page |
394 |
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1800744184347361280 |