Biological Invasions

, Volume 19, Issue 4, pp 1143–1151

Global resource acquisition patterns of invasive and native plant species do not hold at the regional scale in Mediterranean type ecosystems

  • Jennifer L. Funk
  • Monica A. Nguyen
  • Rachel J. Standish
  • William D. Stock
  • Fernando Valladares
Original Paper

DOI: 10.1007/s10530-016-1297-9

Cite this article as:
Funk, J.L., Nguyen, M.A., Standish, R.J. et al. Biol Invasions (2017) 19: 1143. doi:10.1007/s10530-016-1297-9

Abstract

Invasive species may outperform native species by acquiring more resources or by efficiently using limited resources. Studies comparing leaf traits as a metric of carbon capture strategies in native and invasive species have come to different conclusions. Some studies suggest that invasive species are better at acquiring resources, but that native and invasive species use resources similarly. Other studies have found that native and invasive species differ in resource use efficiency, which implies different biochemical or physiological mechanisms of carbon capture. To resolve this debate, we examined relationships among four leaf traits (photosynthetic rate, specific leaf area, foliar nitrogen, foliar phosphorus) in co-occurring native and invasive species from eight plant communities across five Mediterranean-climate ecosystems. We performed standardized major axis regression for all trait combinations within and across sites, testing for slope homogeneity and shifts in elevation (y-intercept) or along a common slope between species groups. Across the global dataset, native and invasive species had similar carbon capture strategies (i.e., similar slopes), with invasive species occupying a position of greater resource acquisition. However, these patterns did not hold when regions were analyzed individually. Regional differences may be driven by differences in life form between native and invasive species, and variation in soil resource availability among regions. Our context-dependent results reveal not only that management of invasive species will differ across regions but also that global comparisons of invasive and native species can be misleading.

Keywords

Leaf economics spectrum Functional traits Carbon capture Resource acquisition Resource use efficiency 

Supplementary material

10530_2016_1297_MOESM1_ESM.docx (1.6 mb)
Supplementary material 1 (DOCX 1612 kb)

Funding information

Funder NameGrant NumberFunding Note
National Science Foundation
  • OISE-1132994
  • IOS-1256827

Copyright information

© Springer International Publishing Switzerland 2016

Authors and Affiliations

  1. 1.Schmid College of Science and TechnologyChapman UniversityOrangeUSA
  2. 2.School of Veterinary and Life SciencesMurdoch UniversityMurdochAustralia
  3. 3.Centre for Ecosystem ManagementEdith Cowan UniversityJoondalupAustralia
  4. 4.Museo Nacional de Ciencias Naturales, CSICMadridSpain
  5. 5.Departamento de CienciasUniversidad Rey Juan CarlosMóstolesSpain

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