The exotic invasive plant Vincetoxicum rossicum is a strong competitor even outside its current realized climatic temperature range

Dog-strangling vine (Vincetoxicum rossicum) is an exotic plant originating from Central and Eastern Europe that is becoming increasingly invasive in southern Ontario, Canada. Once established, it successfully displaces l
Dog-strangling vine (Vincetoxicum rossicum) is an exotic plant originating from Central and Eastern Europe that is becoming increasingly invasive in southern Ontario, Canada. Once established, it successfully displaces local native plant species but mechanisms behind this plant’s high competitive ability are not fully understood. It is unknown whether cooler temperatures will limit the range expansion of V. rossicum, which has demonstrated high tolerance for other environmental variables such as light and soil moisture. Furthermore, if V. rossicum can establish outside its current climatic limit it is unknown whether competition with native species can significantly contribute to reduce fitness and slow down invasion. We conducted an experiment to test the potential of V. rossicum to spread into northern areas of Ontario using a set of growth chambers to simulate southern and northern Ontario climatic temperature regimes. We also tested plant-plant competition by growing V. rossicum in pots with a highly abundant native species, Solidago canadensis, and comparing growth responses to plants grown alone. We found that the fitness of V. rossicum was not affected by the cooler climate despite a delay in reproductive phenology. Growing V. rossicum with S. canadensis caused a significant reduction in seedpod biomass of V. rossicum. However, we did not detect a temperature x competition interaction in spite of evidence for adaptation of S. canadensis to cooler temperature conditions. We conclude that the spread of V. rossicum north within the tested range is unlikely to be limited by climatic temperature but competition with an abundant native species may contribute to slow it down. 
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Metadaten
Author:Laura A. Sanderson, Pedro M. Antunes
URN:urn:nbn:de:hebis:30:3-323759
DOI:http://dx.doi.org/10.3897/neobiota.16.4012
Parent Title (English):NeoBiota
Document Type:Article
Language:English
Date of Publication (online):2013/11/21
Date of first Publication:2013/02/12
Publishing Institution:Universitätsbibliothek Johann Christian Senckenberg
Release Date:2013/11/21
Tag:Dog-Strangling Vine; Vincetoxicum rossicum; climatic temperature range; competition; invasion ecology; invasive species; phenotypic plasticity; reproductive phenology; spread
Issue:16
Pagenumber:15
First Page:1
Last Page:15
HeBIS PPN:36317172X
Dewey Decimal Classification:580 Pflanzen (Botanik)
Sammlungen:Sondersammelgebiets-Volltexte
Zeitschriften / Jahresberichte:NeoBiota 16
Journal: Dazugehörige Zeitschrift anzeigen
Licence (German):License LogoCreative Commons - Namensnennung 3.0

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