NDLI: The invasion of plant communities following extreme weather events under ambient and elevated temperature

Content Provider	Springer Nature Link
Author	Sheppard, Christine S. Alexander, Jake M. Billeter, Regula
Copyright Year	2012
Abstract	Although the problem of plant invasions is expected to increase with climate change, there is as yet little experimental evidence, in particular, for the effects of extreme weather events. We established communities of European meadow species, which were subjected to warming and extreme event (drought and deluge) treatments in a factorial design at an experimental garden in Zurich, Switzerland. Phylogenetically matched pairs of native and alien species (Bromus erectus, B. inermis, Trifolium pratense, T. hybridum, Lactuca serriola, and Conyza canadensis) were introduced into the communities to test if invader performance is favored by warming and extreme events, and if alien invaders perform better than native colonizers. With a warming of on average 0.3 °C, a higher cover of native plant communities was observed, while drought decreased cover in the short-term and lowered biomass. Germination, survival, and growth of the introduced species were lower under elevated temperature. Survival of all pairs and growth of Trifolium was greater in drought pots, while deluge had no effect. While the alien species showed a faster rate of increase in the number of leaves, mortality of alien species was greater than of native species. Overall, the performance of the focal species varied much more among taxonomic groups than native/alien provenances. The results suggest that with climate change, different types of extreme events will differ in the severity of their effects on native plant communities. Meanwhile, the effects of climate change on plant invasions are more likely to operate indirectly through the impacts on native vegetation.
Starting Page	1289
Ending Page	1301
Page Count	13
File Format	PDF
ISSN	13850237
Journal	Plant Ecology
Volume Number	213
Issue Number	8
e-ISSN	15735052
Language	English
Publisher	Springer Netherlands
Publisher Date	2012-07-07
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Invasive plants Climate change Warming Drought Flooding Alien-native congeners Plant Sciences
Content Type	Text
Resource Type	Article
Subject	Ecology Plant Science

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