Editor: Arndt Hampe
Anthropogenic-based regional-scale factors most consistently explain plot-level exotic diversity in grasslands
Article first published online: 14 MAR 2014
© 2014 John Wiley & Sons Ltd
Global Ecology and Biogeography
Volume 23, Issue 7, pages 802–810, July 2014
How to Cite
MacDougall, A. S., Bennett, J. R., Firn, J., Seabloom, E. W., Borer, E. T., Lind, E. M., Orrock, J. L., Harpole, W. S., Hautier, Y., Adler, P. B., Cleland, E., Davies, K., Melbourne, B., Prober, S. M., Bakker, J. D., Fay, P. A., Jin, V. L., Kendig, A., La Pierre, K. J., Moore, J., Morgan, J. and Stevens, C. J. (2014), Anthropogenic-based regional-scale factors most consistently explain plot-level exotic diversity in grasslands. Global Ecology and Biogeography, 23: 802–810. doi: 10.1111/geb.12157
- Issue published online: 5 JUN 2014
- Article first published online: 14 MAR 2014
- National Science Foundation Research Coordination Network. Grant Number: NSF-DEB-1042132
- Long Term Ecological Research. Grant Number: NSF-DEB-1234162
- Institute on the Environment. Grant Number: DG-0001-13
Figure S1 The relationship between native and exotic diversity at three spatial scales for 32 grassland sites from four regions.
Figure S2 Scale-dependent responses of diversity to environmental gradients in 32 grassland sites from four regions on two continents.
Figure S3 A scatter diagram showing the strength of the relationship between the average cover of exotic dominants (Table S4) vs. total native plant cover at the 32 study sites.
Table S1 List of study sites.
Table S2 Summary of regional metadata from the four study regions, representing 32 grassland sites on two continents.
Table S3 The most abundant (i.e. dominant) exotic species at each site.
Table S4 Results from ANOVAs conducted to assess the significance of the fixed effects for linear mixed effect models of introduced and native species richness and fixed effects representing climatic conditions, landscape and human influences, primary productivity and non-climatic environmental variability with random intercepts due to site.
Table S5 Regional-level comparisons of significant correlations among species pairs, within 32 grassland sites on two continents.
Table S6 Comparison of significant plot-level negative vs positive pairwise associations for native and exotic species.
Appendix S1 Additional methodological and analytical details.
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