Influence de l'hétérogénéité de l'habitat sur la richesse spécifique des coléoptères en forêt boréale

Authors: Janssen, Philippe
Advisor: Fortin, DanielHébert, Christian
Abstract: The main objective of this study was to establish the relationship between beetle species richness and compositional and structural heterogeneity characterized at multiple spatial scales. During the summers of 2004 and 2005, 70 stands of the boreal forest of the North shore region of Québec were sampled. Overall, 133 ground-dwelling beetle species and 251 flying species were captured using pitfall and flight interception traps. The influence of the type of heterogeneity and the spatial scale varied between the two groups of beetles. Compositional heterogeneity evaluated at the stand scale best explained spatial variations in ground-dwelling beetle richness, whereas it was the joint influence of structural and compositional heterogeneity at both stand and landscape scales that best explained spatial variations in flying beetle richness. The study outlines the importance of considering several components of heterogeneity and multiple spatial scales to better understand of biodiversity patterns.
Document Type: Mémoire de maîtrise
Issue Date: 2008
Open Access Date: 20 April 2018
Permalink: http://hdl.handle.net/20.500.11794/25652
Grantor: Université Laval
Collection:Thèses et mémoires

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