Context-dependent responses of juvenile Atlantic salmon ( Salmo salar ) to forestry activities at multiple spatial scales within a river basin
We used classification trees and regression trees to relate the incidence and density of juvenile Atlantic salmon (Salmo salar) to forestry activities measured at four spatial scales (subbasin and 8, 2, and 0.5 km radii upstream of study sites) and environmental features in 120 stream reaches of the...
Published in: | Canadian Journal of Fisheries and Aquatic Sciences |
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crcansciencepubl:10.1139/f07-077 2023-12-17T10:27:19+01:00 Context-dependent responses of juvenile Atlantic salmon ( Salmo salar ) to forestry activities at multiple spatial scales within a river basin Deschênes, Julie Rodríguez, Marco A Bérubé, Pierre 2007 http://dx.doi.org/10.1139/f07-077 http://www.nrcresearchpress.com/doi/pdf/10.1139/f07-077 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Canadian Journal of Fisheries and Aquatic Sciences volume 64, issue 8, page 1069-1079 ISSN 0706-652X 1205-7533 Aquatic Science Ecology, Evolution, Behavior and Systematics journal-article 2007 crcansciencepubl https://doi.org/10.1139/f07-077 2023-11-19T13:38:17Z We used classification trees and regression trees to relate the incidence and density of juvenile Atlantic salmon (Salmo salar) to forestry activities measured at four spatial scales (subbasin and 8, 2, and 0.5 km radii upstream of study sites) and environmental features in 120 stream reaches of the Cascapedia River basin, Québec, Canada. At all scales, incidence increased with reach size and accessibility to the reach from the river mainstem. Incidence declined with areal coverage of logging at all scales, but only in larger reaches. The time horizon over which logging effects were detected increased with spatial scale. At all scales, density in salmon-bearing reaches increased with accessibility. Density in more accessible reaches was negatively related to logging over the preceding 9 years at the subbasin and 8 km scales, but no effects of logging on density were detected at the 2 and 0.5 km scales. Overall, apparent effects of logging activities on salmon incidence and density were mostly negative and strong, but were both markedly scale-dependent and conditional on environmental context. Article in Journal/Newspaper Atlantic salmon Salmo salar Canadian Science Publishing (via Crossref) Canada Canadian Journal of Fisheries and Aquatic Sciences 64 8 1069 1079 |
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Open Polar |
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Canadian Science Publishing (via Crossref) |
op_collection_id |
crcansciencepubl |
language |
English |
topic |
Aquatic Science Ecology, Evolution, Behavior and Systematics |
spellingShingle |
Aquatic Science Ecology, Evolution, Behavior and Systematics Deschênes, Julie Rodríguez, Marco A Bérubé, Pierre Context-dependent responses of juvenile Atlantic salmon ( Salmo salar ) to forestry activities at multiple spatial scales within a river basin |
topic_facet |
Aquatic Science Ecology, Evolution, Behavior and Systematics |
description |
We used classification trees and regression trees to relate the incidence and density of juvenile Atlantic salmon (Salmo salar) to forestry activities measured at four spatial scales (subbasin and 8, 2, and 0.5 km radii upstream of study sites) and environmental features in 120 stream reaches of the Cascapedia River basin, Québec, Canada. At all scales, incidence increased with reach size and accessibility to the reach from the river mainstem. Incidence declined with areal coverage of logging at all scales, but only in larger reaches. The time horizon over which logging effects were detected increased with spatial scale. At all scales, density in salmon-bearing reaches increased with accessibility. Density in more accessible reaches was negatively related to logging over the preceding 9 years at the subbasin and 8 km scales, but no effects of logging on density were detected at the 2 and 0.5 km scales. Overall, apparent effects of logging activities on salmon incidence and density were mostly negative and strong, but were both markedly scale-dependent and conditional on environmental context. |
format |
Article in Journal/Newspaper |
author |
Deschênes, Julie Rodríguez, Marco A Bérubé, Pierre |
author_facet |
Deschênes, Julie Rodríguez, Marco A Bérubé, Pierre |
author_sort |
Deschênes, Julie |
title |
Context-dependent responses of juvenile Atlantic salmon ( Salmo salar ) to forestry activities at multiple spatial scales within a river basin |
title_short |
Context-dependent responses of juvenile Atlantic salmon ( Salmo salar ) to forestry activities at multiple spatial scales within a river basin |
title_full |
Context-dependent responses of juvenile Atlantic salmon ( Salmo salar ) to forestry activities at multiple spatial scales within a river basin |
title_fullStr |
Context-dependent responses of juvenile Atlantic salmon ( Salmo salar ) to forestry activities at multiple spatial scales within a river basin |
title_full_unstemmed |
Context-dependent responses of juvenile Atlantic salmon ( Salmo salar ) to forestry activities at multiple spatial scales within a river basin |
title_sort |
context-dependent responses of juvenile atlantic salmon ( salmo salar ) to forestry activities at multiple spatial scales within a river basin |
publisher |
Canadian Science Publishing |
publishDate |
2007 |
url |
http://dx.doi.org/10.1139/f07-077 http://www.nrcresearchpress.com/doi/pdf/10.1139/f07-077 |
geographic |
Canada |
geographic_facet |
Canada |
genre |
Atlantic salmon Salmo salar |
genre_facet |
Atlantic salmon Salmo salar |
op_source |
Canadian Journal of Fisheries and Aquatic Sciences volume 64, issue 8, page 1069-1079 ISSN 0706-652X 1205-7533 |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/f07-077 |
container_title |
Canadian Journal of Fisheries and Aquatic Sciences |
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64 |
container_issue |
8 |
container_start_page |
1069 |
op_container_end_page |
1079 |
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1785579146692263936 |