Firn, J. and Moore, J.L. and MacDougall, A.S. and Borer, E.T. and Seabloom, E. and HilleRisLambers, J. and Harpole, W.S. and Cleland, E.E. and Brown, C.S. and Knops, J.M.H. and Prober, S. and Pyke, D.A. and Farrell, K.A. and Bakker, J. and O’Halloran, L.R. and Adler, P.B. and Collins, S.L. and D’Antonio, C.M. and Crawley, M. J. and Wolkovich, E.M. and La Pierre, K.J. and Melbourne, B.A. and Hautier, Y. and Morgan, J.W. and Leakey, A.B.D. and Kay, A. and McCulley, R. and Davies, K and Stevens, Carly and Chu, C.J. and Holl, K.D. and Klein, J.A. and Fay, P.A. and Hagenah, N. and Kirkham, K.P. and Buckley, Y. (2011) Abundance of introduced species at home predicts abundance away in temperate grasslands. Ecology Letters, 14 (3). pp. 274-281. ISSN 1461-023XFull text not available from this repository.
Many ecosystems worldwide are dominated by introduced plant species, leading to loss of biodiversity and ecosystem function. A common but rarely tested assumption is that these plants are more abundant in introduced vs. native communities, because ecological or evolutionary-based shifts in populations underlie invasion success. Here, data for 26 herbaceous species at 39 sites, within eight countries, revealed that species abundances were similar at native (home) and introduced (away) sites – grass species were generally abundant home and away, while forbs were low in abundance, but more abundant at home. Sites with six or more of these species had similar community abundance hierarchies, suggesting that suites of introduced species are assembling similarly on different continents. Overall, we found that substantial changes to populations are not necessarily a pre-condition for invasion success and that increases in species abundance are unusual. Instead, abundance at home predicts abundance away, a potentially useful additional criterion for biosecurity programmes.
|Journal or Publication Title:||Ecology Letters|
|Uncontrolled Keywords:||Biogeography ; biosecurity ; disturbance ; global meta-study ; homogenization of communities ; invasion paradox ; mechanisms of invasion ; Nutrient Network ; plant invasion ; propagule pressure|
|Subjects:||G Geography. Anthropology. Recreation > GE Environmental Sciences|
|Departments:||Faculty of Science and Technology > Lancaster Environment Centre|
|Deposited On:||01 May 2012 17:02|
|Last Modified:||26 Jul 2012 20:19|
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