Central-marginal population dynamics in species invasions
- Eastern Forest Environmental Threat Assessment Center, United States Department of Agriculture (USDA) Forest Service, Asheville, NC, USA
The species' range limits and associated central-marginal (C-M, i.e., from species range center to margin) population dynamics continue to draw increasing attention because of their importance for current emerging issues such as biotic invasions and epidemic diseases under global change. Previous studies have mainly focused on species borders and C-M process in natural settings for native species. More recently, growing efforts are devoted to examine the C-M patterns and process for invasive species partly due to their relatively short history, highly dynamic populations, and management implications. Here I examine recent findings and information gaps related to (1) the C-M population dynamics linked to species invasions, and (2) the possible effects of climate change and land use on the C-M patterns and processes. Unlike most native species that are relatively stable (some even having contracting populations or ranges), many invasive species are still spreading fast and form new distribution or abundance centers. Because of the strong nonlinearity of population demographic or vital rates (i.e., birth, death, immigration, and emigration) across the C-M gradients and the increased complexity of species ranges due to habitat fragmentation, multiple introductions, range-wide C-M comparisons and simulation involving multiple vital rates are needed in the future.
Keywords: climate change, core-periphery, genetic diversity, hierarchy, land use, patches, source-sink, species' borders
Citation: Guo Q (2014) Central-marginal population dynamics in species invasions. Front. Ecol. Evol. 2:23. doi: 10.3389/fevo.2014.00023
Received: 03 March 2014; Accepted: 26 May 2014;
Published online: 11 June 2014.
Edited by:Alexei B. Ryabov, University of Oldenburg, Germany
Reviewed by:Fernando Colchero, University of Southern Denmark, Denmark
Eugene B. Postnikov, Kursk State Univeristy, Russia
Copyright © 2014 Guo. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
*Correspondence: Qinfeng Guo, Eastern Forest Environmental Threat Assessment Center, United States Department of Agriculture (USDA) Forest Service, 200 WT Weaver Blvd., Asheville, NC 28804, USA e-mail: firstname.lastname@example.org