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The influence of soil feedback and plant traits on competition between an invasive plant and co-occurring native and exotic species

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dc.contributor.advisor Maherali, Hafiz
dc.contributor.author Poon, Gary
dc.date.accessioned 2011-08-25T18:04:37Z
dc.date.available 2011-08-25T18:04:37Z
dc.date.copyright 2011-07
dc.date.created 2011-07-25
dc.date.issued 2011-08-25
dc.identifier.uri http://hdl.handle.net/10214/2862
dc.description.abstract The mechanisms that allow invasive species to flourish in novel habitats are poorly understood. A. petiolata (Alliaria petiolata) is an invader of North American forest edge and understory communities. A. petiolata’s success may result from high competitive ability due to its suppression of mycorrhizal fungi used by other species. In a greenhouse experiment, I grew 27 target species in the presence and absence of A.petiolata in soil with and without a history of A. petiolata. I found that soil with a history of A. petiolata had depleted plant available nitrogen and reduced mycorrhizal fungal colonization of target species. A. petiolata competition suppressed the growth of target species less in soils with than without A. petiolata history. Furthermore, I found that tall plants with finer roots more effectively suppressed the growth of A. petiolata. My results suggest that soil feedback effects do not improve A. petiolata’s competitive ability and are unlikely to contribute to A. petiolata invasion. en_US
dc.language.iso en en_US
dc.subject garlic mustard en_US
dc.subject alliaria petiolata en_US
dc.subject invasive species en_US
dc.subject competition en_US
dc.title The influence of soil feedback and plant traits on competition between an invasive plant and co-occurring native and exotic species en_US
dc.type Thesis en_US
dc.degree.programme Integrative Biology en_US
dc.degree.name Master of Science en_US
dc.degree.department Department of Integrative Biology en_US
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