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Grisel Longo, Tristram G. Seidler, Lucas A. Garibaldi, Pedro M. Tognetti and Enrique J. Chaneton Functional group dominance and identity effects influence the magnitude of grassland invasion Journal of Ecology 101

Article first published online: 26 JUL 2013 | DOI: 10.1111/1365-2745.12128

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A large-scale removal experiment in the flooding pampa, Argentina, shows that the impact of losing a functional group on the magnitude of invasion largely reflects its relative contribution to community biomass (the ‘mass ratio’ hypothesis). Identity attributes other than biomass may enhance the effect that losing the dominant native functional group has on the spread of established exotic species.

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