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Contribution of unburned boreal forests to the population of black-backed woodpecker in eastern Canada

Tremblay Junior A., Ibarzabal Jacques et Savard Jean-Pierre L.. (2015). Contribution of unburned boreal forests to the population of black-backed woodpecker in eastern Canada. Écoscience, 22, (2-4), p. 145-155.

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URL officielle: http://dx.doi.org/doi:10.1080/11956860.2016.116938...

Résumé

Black-backed woodpecker is known to be a disturbance-associated species, being more abundant in disturbed forest stands than in undisturbed habitats, but its demography and population dynamic still need to be clarified. The present study was conducted in central Quebec within coniferous forests shaped largely by timber harvest and wildfire. The objectives were to compare the age composition of breeding black-backed woodpeckers, nest survival rate and productivity in both disturbed and undisturbed habitats (respectively recently burned and unburned habitats). In addition, we evaluated the general productivity of both habitat types in a simulated boreal landscape. There was a positive relationship between nest age and daily survival rates. Older woodpeckers were the most abundant breeders in unburned habitats and younger birds in oneyear-old burns. Although nests in recently burned forests produced more nestlings per successful nest, our simulation of a boreal forest landscape showed that unburned habitat produced about two-thirds more fledglings per year than burned habitat. Globally, unburned habitat may provide woodpeckers more temporally stable resources. Population dynamics of the black-backed woodpecker, at least in our study area, may be explained by resource pulse interactions where populations benefit opportunistically from short-term high-quality habitat, and rely on unburned habitats for long-term persistence.

Type de document:Article publié dans une revue avec comité d'évaluation
ISSN:1195-6860
Volume:22
Numéro:2-4
Pages:p. 145-155
Version évaluée par les pairs:Oui
Date:2015
Identifiant unique:10.1080/11956860.2016.1169386
Sujets:Sciences naturelles et génie > Sciences naturelles > Biologie et autres sciences connexes
Département, module, service et unité de recherche:Départements et modules > Département des sciences fondamentales
Unités de recherche > Centre de recherche sur la Boréalie (CREB)
Mots-clés:age-class structure, nest survival, Picoides arcticus, resource pulse interactions, wildfire
Déposé le:06 juin 2023 12:42
Dernière modification:06 juin 2023 12:42
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