Niche dynamics of alien species do not differ among sexual and apomictic flowering plants.

ABSTRACT: Biological invasions can be associated with shifts of the species' climatic niches but the incidence of such shifts is under debate. The reproductive system might be a key factor controlling such shifts because it influences a species' evolutionary flexibility. However, the link between reproductive systems and niche dynamics in plant invasions has been little studied so far. We compiled global occurrence data sets of 13 congeneric sexual and apomictic species pairs, and used principal components analysis (PCA) and kernel smoothers to compare changes in climatic niche optima, breadths and unfilling/expansion between native and alien ranges. Niche change metrics were compared between sexual and apomictic species. All 26 species showed changes in niche optima and/or breadth and 14 species si

SUBMITTER: Dellinger AS 

PROVIDER: S-EPMC4950116 | biostudies-literature | 2016 Feb

REPOSITORIES: biostudies-literature