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J.-C. Svenning

Less favourable climates constrain demographic strategies in plants

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  • Anna M. Csergo, University of Queensland, St. Cucia, Queensland
  • ,
  • Roberto Salguero-Gomez, Max Planck Inst Halbleiterlabor, Max Planck Society
  • ,
  • Olivier Broennimann, University of Lausanne
  • ,
  • Shaun R. Coutts, University of Sheffield, Sheffield
  • ,
  • Antoine Guisan, University of Lausanne
  • ,
  • Amy L. Angert, University of British Columbia
  • ,
  • Erik Welk, German Ctr Integrat Biodivers Res iDiv
  • ,
  • Iain Stott, Univ. of Southern Denmark
  • ,
  • Brian J. Enquist, Univ Arizona, University of Arizona, Dept Phys
  • ,
  • Brian McGill, Univ Maine, University of Maine, University of Maine System, University of Maine Orono, Sch Biol & Ecol, Sustainabil Solut Initiat
  • ,
  • Jens-Christian Svenning
  • Cyrille Violle, Univ Montpellier, Languedoc-Roussillon Universites (ComUE), Universite de Montpellier, Lab Univers & Particules Montpellier
  • ,
  • Yvonne M. Buckley, University of Queensland, St. Cucia, Queensland

Correlative species distribution models are based on the observed relationship between species' occurrence and macroclimate or other environmental variables. In climates predicted less favourable populations are expected to decline, and in favourable climates they are expected to persist. However, little comparative empirical support exists for a relationship between predicted climate suitability and population performance. We found that the performance of 93 populations of 34 plant species worldwide - as measured by in situ population growth rate, its temporal variation and extinction risk - was not correlated with climate suitability. However, correlations of demographic processes underpinning population performance with climate suitability indicated both resistance and vulnerability pathways of population responses to climate: in less suitable climates, plants experienced greater retrogression (resistance pathway) and greater variability in some demographic rates (vulnerability pathway). While a range of demographic strategies occur within species' climatic niches, demographic strategies are more constrained in climates predicted to be less suitable.

OriginalsprogEngelsk
TidsskriftEcology Letters
Vol/bind20
Nummer8
Sider (fra-til)969-980
Antal sider12
ISSN1461-023X
DOI
StatusUdgivet - aug. 2017

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