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Aridity weakens population-level effects of multiple species interactions on

Louthan, Allison M ; Pringle, Robert M ; Goheen, Jacob R ; Palmer, Todd M ; Morris, William F ; Doak, Daniel F

Proceedings of the National Academy of Sciences of the United States of America, 16 January 2018, Vol.115(3), pp.543-548 [Periódico revisado por pares]

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  • Título:
    Aridity weakens population-level effects of multiple species interactions on
  • Autor: Louthan, Allison M ; Pringle, Robert M ; Goheen, Jacob R ; Palmer, Todd M ; Morris, William F ; Doak, Daniel F
  • Assuntos: Abiotic Stress ; Climate Change ; Population Growth ; Range Boundaries ; Species Interactions ; Ecosystem ; Hibiscus -- Growth & Development
  • É parte de: Proceedings of the National Academy of Sciences of the United States of America, 16 January 2018, Vol.115(3), pp.543-548
  • Descrição: Predicting how species' abundances and ranges will shift in response to climate change requires a mechanistic understanding of how multiple factors interact to limit population growth. Both abiotic stress and species interactions can limit populations and potentially set range boundaries, but we have a poor understanding of when and where each is most critical. A commonly cited hypothesis, first proposed by Darwin, posits that abiotic factors (e.g., temperature, precipitation) are stronger determinants of range boundaries in apparently abiotically stressful areas ("stress" indicates abiotic factors that reduce population growth), including desert, polar, or high-elevation environments, whereas species interactions (e.g., herbivory, competition) play a stronger role in apparently less stressful environments. We tested a core tenet of this hypothesis-that population growth rate is more strongly affected by species interactions in less stressful areas-using experimental manipulations of species...
  • Idioma: Inglês

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