Faster returns on 'leaf economics' and different biogeochemical niche in invasive compared with native plant species

Josep Penuelas, Jordi Sardans, Joan Llusià, Susan M. Owen, Jofre Carnicer, Thomas W. Giambelluca, Enrico L. Rezende, Mashuri Waite, Ülo Niinemets

Research output: Contribution to journalArticlepeer-review

126 Citations (Scopus)

Abstract

Plant-invasive success is one of the most important current global changes in the biosphere. To understand which factors explain such success, we compared the foliar traits of 41 native and 47 alien-invasive plant species in Oahu Island (Hawaii), a location with a highly endemic flora that has evolved in isolation and is currently vulnerable to invasions by exotic plant species. Foliar traits, which in most cases presented significant phylogenetic signal, i.e. closely related species tended to resemble each other due to shared ancestry, separated invasive from native species. Invasive species had lower leaf mass per area and enhanced capacities in terms of productivity (photosynthetic capacity) and nutrient capture both of macro- (N, P, K) and microelements (Fe, Ni, Cu and Zn). All these differences remain highly significant after removing the effects of phylogenetic history. Alien-invasive species did not show higher efficiency at using limiting nutrient resources, but they got faster leaf economics returns and occupied a different biogeochemical niche, which helps to explain the success of invasive plants and suggests that potential increases in soil nutrient availability might favor further invasive plant success.

Original languageEnglish
Pages (from-to)2171-2185
Number of pages15
JournalGlobal Change Biology
Volume16
Issue number8
DOIs
Publication statusPublished - Aug 2010

Keywords

  • Biogeochemical niche
  • Hawaiian flora
  • Invasive success
  • LMA
  • Leaf economics
  • Leaf elemental composition
  • Nutrient stoichiometry
  • Photosynthetic capacity

ASJC Scopus subject areas

  • Global and Planetary Change
  • Environmental Chemistry
  • Ecology
  • Environmental Science(all)

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