Warming, plant phenology and the spatial dimension of trophic mismatch for large herbivores

Eric Post, Christian Pedersen, Christopher C. Wilmers, Mads C. Forchhammer

Research output: Contribution to journalArticlepeer-review

131 Scopus citations

Abstract

Temporal advancement of resource availability by warming in seasonal environments can reduce reproductive success of vertebrates if their own reproductive phenology does not also advance with warming. Indirect evidence from large-scale analyses suggests, however, that migratory vertebrates might compensate for this by tracking phenological variation across landscapes. Results from our two-year warming experiment combined with seven years of observations of plant phenology and offspring production by caribou (Rangifer tarandus) in Greenland, however, contradict evidence from large-scale analyses. At spatial scales relevant to the foraging horizon of individual herbivores, spatial variability in plant phenology was reduced-not increased-by both experimental and observed warming. Concurrently, offspring production by female caribou declined with reductions in spatial variability in plant phenology. By highlighting the spatial dimension of trophic mismatch, these results reveal heretofore unexpected adverse consequences of climatic warming for herbivore population ecology.

Original languageEnglish (US)
Pages (from-to)2005-2013
Number of pages9
JournalProceedings of the Royal Society B: Biological Sciences
Volume275
Issue number1646
DOIs
StatePublished - Sep 7 2008

All Science Journal Classification (ASJC) codes

  • Biochemistry, Genetics and Molecular Biology(all)
  • Immunology and Microbiology(all)
  • Environmental Science(all)
  • Agricultural and Biological Sciences(all)

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