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

Autor(en)

Agnes Dellinger, Franz Essl, Diego Hojsgaard, Bernhard Kirchheimer, Simon Klatt, Wayne Dawson, Jan Pergl, Petr Pysek, Mark Van Kleunen, Ewald Weber, Marten Winter, Elvira Hörandl, Stefan Dullinger

Abstrakt

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 significantly expanded their climatic niches. However, we found no effect of the reproductive system on niche dynamics. Instead, species with narrower native niches showed higher rates of niche expansion in the alien ranges.
Our results suggest that niche shifts are frequent in plant invasions but evolutionary potential may not be of major importance for such shifts. Niche dynamics rather appear to be driven by changes of the realized niche without adaptive change of the fundamental climatic niche.

Organisation(en)

Department für Botanik und Biodiversitätsforschung

Externe Organisation(en)

Georg-August-Universität Göttingen, Universität Konstanz, Czech Academy of Sciences, Charles University Prague, Universität Potsdam, German Centre for Integrative Biodiversity Research (iDiv)

Journal

New Phytologist

Band

209

Seiten

1313-1323

Anzahl der Seiten

11

ISSN

0028-646X

Publikationsdatum

2015

Peer-reviewed

Ja

ÖFOS 2012

106008 Botanik, 106012 Evolutionsforschung, 106001 Allgemeine Biologie, 106042 Systematische Botanik

Schlagwörter

ASJC Scopus Sachgebiete

Physiology, Plant Science

Link zum Portal

https://ucrisportal.univie.ac.at/de/publications/c9492b94-dd02-4f30-9278-bf37b486c1e0