Review & synthesis
The influence of interspecific interactions on species range expansion rates
Article first published online: 20 JAN 2014
© 2014 The Authors. Ecography published by Nordic Society Oikos.
This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.
Volume 37, Issue 12, pages 1198–1209, December 2014
How to Cite
Svenning, J.-C., Gravel, D., Holt, R. D., Schurr, F. M., Thuiller, W., Münkemüller, T., Schiffers, K. H., Dullinger, S., Edwards, T. C., Hickler, T., Higgins, S. I., Nabel, J. E. M. S., Pagel, J. and Normand, S. (2014), The influence of interspecific interactions on species range expansion rates. Ecography, 37: 1198–1209. doi: 10.1111/j.1600-0587.2013.00574.x
- Issue published online: 2 DEC 2014
- Article first published online: 20 JAN 2014
- Manuscript Accepted: 31 OCT 2013
- the Danish Council for Independent Research| Natural Sciences. Grant Number: 10-085056
- Aarhus Univ. and Aarhus Univ. Research Foundation
- the European Research Council. Grant Number: ERC-2012-StG-310886-HISTFUNC
- the Natural Science and Engineering Council of Canada
- the European Research Council under the European Community's Seven Framework Programme FP7/2007-2013. Grant Number: 281422
- the EraNet BiodivERsA project. Grant Number: ANR-11-EBID-002
- the Austrian Panel for Climate Research (SPEC-Adapt). Grant Number: B175127
- the Swiss National Science Foundation (SNF). Grant Number: 315230-122434
- the German Research Foundation (DFG). Grant Number: SCHU 2259/3-1 and SCHU 2259/5-1
- the Univ. of Florida Foundation
Ongoing and predicted global change makes understanding and predicting species' range shifts an urgent scientific priority. Here, we provide a synthetic perspective on the so far poorly understood effects of interspecific interactions on range expansion rates. We present theoretical foundations for how interspecific interactions may modulate range expansion rates, consider examples from empirical studies of biological invasions and natural range expansions as well as process-based simulations, and discuss how interspecific interactions can be more broadly represented in process-based, spatiotemporally explicit range forecasts. Theory tells us that interspecific interactions affect expansion rates via alteration of local population growth rates and spatial displacement rates, but also via effects on other demographic parameters. The best empirical evidence for interspecific effects on expansion rates comes from studies of biological invasions. Notably, invasion studies indicate that competitive dominance and release from specialized enemies can enhance expansion rates. Studies of natural range expansions especially point to the potential for competition from resident species to reduce expansion rates. Overall, it is clear that interspecific interactions may have important consequences for range dynamics, but also that their effects have received too little attention to robustly generalize on their importance. We then discuss how interspecific interactions effects can be more widely incorporated in dynamic modeling of range expansions. Importantly, models must describe spatiotemporal variation in both local population dynamics and dispersal. Finally, we derive the following guidelines for when it is particularly important to explicitly represent interspecific interactions in dynamic range expansion forecasts: if most interacting species show correlated spatial or temporal trends in their effects on the target species, if the number of interacting species is low, and if the abundance of one or more strongly interacting species is not closely linked to the abundance of the target species.