Authors: Davis, Kimberley T.; Callaway, Ragan M.; Fajardo, Alex; Pauchard, Aníbal; Núñez, Martín A.; Brooker, Rob W.; Maxwell, Bruce D.; Dimarco, Romina Daniela; Peltzer, Duane A.; Mason, Bill; Ruotsalainen, Seppo; McIntosh, Anne C.S.; Pakerman, Robin J.; Smith, Alyssa Laney; Gundale, Michel J.
Publication Date: 2018.
Invasive plant impacts vary widely across introduced ranges. We tested the hypothesis that differences in the eco-evolutionary experience of native communities with the invader correspond with the impacts of invasive species on native vegetation, with impacts increasing with ecological novelty. We compared plant species richness and composition beneath Pinus contorta to that in adjacent vegetation and other P. contorta stands across a network of sites in its native (Canada and USA) and nonnative (Argentina, Chile, Finland, New Zealand, Scotland, Sweden) ranges. At sites in North America and Europe, within the natural distribution of the genus Pinus, P. contorta was not associated with decreases in diversity. In the Southern Hemisphere, where there are no native Pinaceae, plant communities beneath P. contorta were less diverse than in other regions and compared to uninvaded native vegetation. Effects on native vegetation were particularly pronounced where P. contorta was a more novel life form and exhibited higher growth rates. Our results support the hypothesis that the eco-evolutionary experience of the native vegetation, and thus the novelty of the invader, determines the magnitude of invader impacts on native communities. Understanding the eco-evolutionary context of invasions will help to better understand and predict where invasion impacts will be greatest and to prioritize invasive species management.
Estación Experimental Agropecuaria Bariloche
Author affiliation: Davis, Kimberley T. University of Montana. Department of Ecossystem and Conservation Sciences; Estados Unidos
Author affiliation: Callaway, Ragan M. University of Montana. Division of Biological Sciences; Estados Unidos
Author affiliation: Fajardo, Alex. Universidad Austral de Chile. Centro de Investigación en Ecosistemas de la Patagonia; Chile
Author affiliation: Pauchard, Anibal. Universidad de Concepción. Facultad de Ciencias Forestales. Laboratorios de Invasiones Biológicas; Chile
Author affiliation: Núñez, Martín A. Universidad Nacional del Comahue. Grupo de Ecología de Invasiones; Argentina
Author affiliation: Brooker, Rob W. The James Hutton Institute; Escocia
Author affiliation: Maxwell, Bruce D. Montana State University. Land Resources and Environmental Sciences Department; Estados Unidos
Author affiliation: Dimarco, Romina. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Bariloche. Grupo de Ecología de Poblaciones de Insectos; Argentina
Author affiliation: Peltzer, Duane A. Landcare Research; Nueva Zelanda
Author affiliation: Mason, Bill. Forest Research; Escocia
Author affiliation: Ruotsalainen, Seppo. Natural Resources Institute Finland. Punkaharju Research Unit; Finlandia
Author affiliation: McIntosh, Anne C.S. University of Alberta. Department of Science; Canada
Author affiliation: Pakerman, Robin. The James Hutton Institute; Escocia
Author affiliation: Smith, Alyssa Laney. University of Arizona. Department of Ecology & Evolutionary Biology; Estados Unidos
Author affiliation: Gundale, Michael J. Swedish University of Agricultural Sciences. Department of Forest Ecology and Management; Suecia
Repository: INTA Digital (INTA). Instituto Nacional de Tecnología Agropecuaria