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Title

How does climate change influence demographic processes of widespread species? Lessons from the comparative analysis of contrasted populations of roe deer

Publication Year

2013

Author(s)
  • Gaillard, Jean-Michel
  • Hewison, A. J. Mark
  • Klein, Francois
  • Plard, Floriane
  • Douhard, Mathieu
  • Davison, Raziel
  • Bonenfant, Christophe
Source
ECOLOGY LETTERS Volume: 16 Pages: 48-57 Published: 2013
ISSN
1461-023X
Abstract

How populations respond to climate change depends on the interplay between life history, resource availability, and the intensity of the change. Roe deer are income breeders, with high levels of allocation to reproduction, and are hence strongly constrained by the availability of high quality resources during spring. We investigated how recent climate change has influenced demographic processes in two populations of this widespread species. Spring began increasingly earlier over the study, allowing us to identify 2 periods with contrasting onset of spring. Both populations grew more slowly when spring was early. As expected for a long-lived and iteroparous species, adult survival had the greatest potential impact on population growth. Using perturbation analyses, we measured the relative contribution of the demographic parameters to observed variation in population growth, both within and between periods and populations. Within periods, the identity of the critical parameter depended on the variance in growth rate, but variation in recruitment was the main driver of observed demographic change between periods of contrasting spring earliness. Our results indicate that roe deer in forest habitats cannot currently cope with increasingly early springs. We hypothesise that they should shift their distribution to richer, more heterogeneous landscapes to offset energetic requirements during the critical rearing stage.

Author Keyword(s)
  • Age-structured populations
  • demographic change
  • income breeding
  • perturbation analysis
  • population growth
  • Recruitment
  • Stochastic environment
  • Survival
KeyWord(s) Plus
  • WINTER BODY-MASS
  • CAPREOLUS-CAPREOLUS
  • EVOLUTIONARY RESPONSES
  • PLANT PHENOLOGY
  • BIRTH DATE
  • LONG-TERM
  • WILD BOAR
  • RED DEER
  • GROWTH
  • DYNAMICS
ESI Discipline(s)
  • Environment/Ecology
Web of Science Category(ies)
  • Ecology
Adress(es)

[Gaillard, Jean-Michel; Plard, Floriane; Douhard, Mathieu; Bonenfant, Christophe] Univ Lyon 1, UMR Biometrie & Biol Evolut 5558, Villeurbanne, France; [Hewison, A. J. Mark] INRA, Comportement & Ecol Faune Sauvage UR035, F-31326 Castanet Tolosan, France; [Klein, Francois] CNERA Cervides Sangliers, Off Natl Chasse & Faune Sauvage, Bar Le Duc, France; [Davison, Raziel] Max Planck Inst Demog Res, Rostock, Germany

Reprint Adress

Gaillard, JM (reprint author), Univ Lyon 1, UMR Biometrie & Biol Evolut 5558, 43 Blvd 11 Novembre 1918, Villeurbanne, France.

Country(ies)
  • France
  • Germany
CNRS - Adress(es)
  • Biométrie et biologie évolutive (LBBE), UMR5558
Accession Number
WOS:000319006400006
uid:/QX5SR27J
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