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Successful range-expanding plants experience less above-ground and below-ground enemy impact

Engelkes, T. and Morriën, W.E. and Verhoeven, K.J.F. and Bezemer, T.M. and Biere, A. and Harvey, J.A. and McIntyre, L.M. and Tamis, W.L.M. and Van der Putten, W.H. (2008) Successful range-expanding plants experience less above-ground and below-ground enemy impact. Nature, 456, 946-948. ISSN 0028-0836.

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Many species are currently moving to higher latitudes and altitudes1, 2, 3. 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 effects4, 5 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 range6, 7, 8. 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.

Item Type:Article
Institutes:Nederlands Instituut voor Ecologie (NIOO)
ID Code:3979
Deposited On:29 Sep 2009 02:00
Last Modified:31 Mar 2014 10:02

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