title: Successful range-expanding plants experience less above-ground and below-ground enemy impact.
abstract: Many species are currently moving to higher latitudes and altitudes. However, little is known about the factors that influence the future performance of range-expanding species in their new habitats. Here we show that range-expanding plant species from a riverine area were better defended against shoot and root enemies than were related native plant species growing in the same area. We grew fifteen plant species with and without non-coevolved polyphagous locusts and cosmopolitan, polyphagous aphids. Contrary to our expectations, the locusts performed more poorly on the range-expanding plant species than on the congeneric native plant species, whereas the aphids showed no difference. The shoot herbivores reduced the biomass of the native plants more than they did that of the congeneric range expanders. Also, the range-expanding plants developed fewer pathogenic effects in their root-zone soil than did the related native species. Current predictions forecast biodiversity loss due to limitations in the ability of species to adjust to climate warming conditions in their range. Our results strongly suggest that the plants that shift ranges towards higher latitudes and altitudes may include potential invaders, as the successful range expanders may experience less control by above-ground or below-ground enemies than the natives.
authors.affiliation: Department of Multitrophic Interactions, Netherlands Institute of Ecology (NIOO-KNAW), PO Box 40, 6666 ZG Heteren, The Netherlands.
authors.forename: Tim
authors.initials: T
authors.lastname: Engelkes
authors.forename: Elly
authors.initials: E
authors.lastname: Morriën
authors.forename: Koen J F
authors.initials: KJ
authors.lastname: Verhoeven
authors.forename: T Martijn
authors.initials: TM
authors.lastname: Bezemer
authors.forename: Arjen
authors.initials: A
authors.lastname: Biere
authors.forename: Jeffrey A
authors.initials: JA
authors.lastname: Harvey
authors.forename: Lauren M
authors.initials: LM
authors.lastname: McIntyre
authors.forename: Wil L M
authors.initials: WL
authors.lastname: Tamis
authors.forename: Wim H
authors.initials: WH
authors.lastname: van der Putten
mesh_terms: D000222:Adaptation, Physiological / Q000502:physiology*; D000531:Altitude; D000818:Animals; D001042:Aphids / Q000502:physiology; D044822:Biodiversity; D018533:Biomass; D017753:Ecosystem; D005247:Feeding Behavior; D006110:Grasshoppers / Q000502:physiology; D018517:Plant Roots / Q000502:physiology*; D018520:Plant Shoots / Q000502:physiology*; D045483:Rivers; D012987:Soil; D013696:Temperature
chemical_list: D012987:Soil