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dc.contributor.supervisor Walker, Dave (Environment and Geography) en_US
dc.contributor.author Lindgren, Cory John
dc.date.accessioned 2013-04-04T16:06:29Z
dc.date.available 2013-04-04T16:06:29Z
dc.date.issued 2010 en_US
dc.date.issued 2012 en_US
dc.date.issued 2012 en_US
dc.date.issued 2012 en_US
dc.identifier.citation Canadian Journal of Plant Science 90:111-124 en_US
dc.identifier.citation Risk Analysis 32:9-15 en_US
dc.identifier.citation Wetlands 32:885-893 en_US
dc.identifier.citation Canadian Field Naturalist 126:xxx-xxx en_US
dc.identifier.uri http://hdl.handle.net/1993/18344
dc.description.abstract The objective of this dissertation is to extend the use of spatial predictive modelling for use by biosecurity agencies to help prevent the introductions of new and emerging invasive plants (i.e., pests). A critical review of international and national policy instruments found that they did not effectively articulate how spatial predictive modelling could be incorporated into the biosecurity toolbox. To determine how spatial predictive modelling could be extended I modelled the potential distribution of Tamarix and Lythrum salicaria in Prairie Canada using a genetic algorithm. New seasonal growth data was used to interpolate a growing degree-day’s risk surface for L. salicaria. Models were developed using suites of predictive variables as well as different data partitioning methods and evaluated using different performance measures. Expert evaluation was found to important in final model selection. The results indicated that both invasive plants have yet to reach their potential distribution in Prairie Canada. The spatial models can be used to direct risk-based surveillance efforts and to support biosecurity policy decisions. The results of this dissertation conclude that spatial predictive modelling is an informative tool that needs to be incorporated into the biosecurity toolbox. A phytosanitary standard is proposed to guide toolbox development. en_US
dc.publisher Canadian Journal of Plant Science en_US
dc.publisher Risk Analysis en_US
dc.publisher Wetlands en_US
dc.publisher Canadian Field Naturalist en_US
dc.subject spatial modelling en_US
dc.subject biosecurity en_US
dc.title Addressing the risks of invasive plants through spatial predictive modelling en_US
dc.degree.discipline Environment and Geography en_US
dc.contributor.examiningcommittee Watler, Doreen (Environment & Geography) Van Acker, Rene (Plant Science) Jones, Jeanne (Mississippi State University) en_US
dc.degree.level Doctor of Philosophy (Ph.D.) en_US
dc.description.note May 2013 en_US


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