Hedger, Richard David; Dodson, Julian J.; Bergeron, Normand 
ORCID: https://orcid.org/0000-0003-2413-6810 et Caron, François
(2005).
Habitat selection by juvenile Atlantic salmon: the interaction between physical habitat and abundance.
Journal of Fish Biology
, vol. 67
, nº 4.
pp. 1054-1071.
DOI: 10.1111/j.0022-1112.2005.00808.x.
Résumé
The effect of physical river habitat variables on the distribution of juvenile Atlantic salmon Salmo salar L. in the Rivière de la Trinité, Québec, Canada, was examined using generalized additive modelling. A survey of Atlantic salmon fry and parr densities and habitat variables (flow velocity, water column depth and substratum size) was conducted in the summer months from 1984 to 1992. Clear patterns of habitat use existed: specific ranges of habitat variables were selected, with parr preferring greater velocities, depths and substratum sizes than fry. There was a large variation, however, in juvenile densities for given velocities, depths or substratum sizes, with this variation being greatest in optimal habitats. On examination of an individual year, interaction between the variables was found to explain some of the variation. On a year‐to‐year basis the juvenile Atlantic salmon population was found to exhibit an ‘Ideal Free Distribution’, which resulted in greatest variation in optimal habitats with year‐to‐year changes in population abundance.
| Type de document: | Article |
|---|---|
| Mots-clés libres: | generalized additive modelling; habitat selection; juvenile Atlantic salmon |
| Centre: | Centre Eau Terre Environnement |
| Date de dépôt: | 08 janv. 2021 20:16 |
| Dernière modification: | 07 nov. 2022 20:05 |
| URI: | https://espace.inrs.ca/id/eprint/11003 |
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