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Biological Invasions

, Volume 16, Issue 3, pp 591–607 | Cite as

Can model species be used to advance the field of invasion ecology?

  • Michael J. Gundale
  • Aníbal Pauchard
  • Bárbara Langdon
  • Duane A. Peltzer
  • Bruce D. Maxwell
  • Martin A. Nuñez
Original Paper

Abstract

Hypotheses for explaining plant invasions have focused on a variety of factors that may influence invasion success, including propagule pressure, interactions of the introduced species with the biotic, abiotic, or disturbance properties of the new ecosystem, or the genetic characteristics of the invader itself. Evaluating the relative importance of these factors has been difficult because for most invaders key information about the introduced population or the introduction event is not available. We propose that natural experiments using model species is an important tool to test multiple invasion hypotheses at the same time, providing a complementary approach to meta-analysis and literature review. By focusing on a single candidate species, Pinus contorta, we explore several attributes that we propose constitute a good model, including: (a) intentional and relatively well documented introduction into a wide range of environments and countries across the world during the past century, where invasion success or failure has already occurred, (b) conspicuous growth form that simplifies assessment of growth rates, and comparisons across native and introduced ecosystems around the world, and, (c) documented and replicated variability of introduction intensity, genetic characteristics of the introduced populations, contrasting biotic communities present at sites of introduction, and abiotic conditions within and across introduced ecosystems. We propose that identifying model species with these characteristics will provide opportunities to disentangle the relative importance of different mechanisms hypothesized to influence invasion success, and thereby advance the field of invasion ecology.

Keywords

Biological invasions Global experiments Invasion hypotheses Model species Native versus home comparison Pinus contorta Tree invasions 

Notes

Acknowledgments

MJG was supported by Swedish TC4F program and the Swedish research council FORMAS. DAP was supported by Core funding for Crown Research Institutes from the New Zealand Ministry of Business, Innovation and Employment’s Science and Innovation Group. AP is funded by Fondecyt 1100792, Conicyt PFB-23 and ICM P05-002. BM was funded by NSF-WildFIRE PIRE, OISE 09667472. The ideas in this manuscript were developed during the Tree Invasions Workshop held in Bariloche, Argentina, September 3–5, 2012. We thank Ian Dickie for comments on an earlier version of the manuscript.

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Copyright information

© Springer Science+Business Media Dordrecht 2013

Authors and Affiliations

  • Michael J. Gundale
    • 1
  • Aníbal Pauchard
    • 2
  • Bárbara Langdon
    • 3
  • Duane A. Peltzer
    • 4
  • Bruce D. Maxwell
    • 5
  • Martin A. Nuñez
    • 6
  1. 1.Department of Forest Ecology and ManagementSwedish University of Agricultural SciencesUmeåSweden
  2. 2.Facultad de Ciencias Forestales, Concepcion and Institute of Ecology and Biodiversity (IEB)Universidad de ConcepcionSantiagoChile
  3. 3.División Manejo EcosistémicoPrograma Conservación de FloraCoronelChile
  4. 4.Landcare ResearchCanterburyNew Zealand
  5. 5.Department of Land Resources and Environmental ScienceMontana State UniversityBozemanUSA
  6. 6.Lab EcotonoINIBIOMA (Conicet-Universidad Nacional del Comahue)BarilocheArgentina

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