Correlations between global and regional measures of invasiveness vary with region size

W. Dawson,Lidewij H. Keser,M. Winter,P. Pyšek,J. Kartesz,Misako Nishino,Nicol Fuentes,M. Chytrý,L. Celesti‐Grapow,M. Kleunen

Published 2013 in Unknown venue

ABSTRACT

We aimed to assess the utility of the Global Compendium of Weeds (GCW) as an indicator of plant invasiveness, by relating it to invasiveness at smaller scales. We correlated two global measures of invasiveness for alien plant species taken from the GCW (the total number of references for each species and the number of continental areas they are reported from), against distribution data from 18 regions (countries and continents). To investigate relationships between correlation strength and region size and spatial resolution (size of distribution units), we conducted meta-analyses. Finally, invasiveness measures were correlated against the number of habitats occupied by alien plant species and their median abundance in those habitats, in fine-scale vegetation plots in the Czech Republic and the state of Montana (USA). The Ersch. in: NeoBiota ; (2013), 16. - S. 59-80 http://dx.doi.org/10.3897/neobiota.16.4351

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