Plant invasions are a serious global threat to natural and managed habitats. In British Columbia, over 20% of the vascular plants have been introduced. Weeds are adapted to a wide range of environmental conditions but occur most often in disturbed soils and depleted rangelands. They compromise land values for wildlife, livestock, agricultural crops, recreation and aesthetics. Prolific seed production, varied dispersal mechanisms and an ability to tolerate severe stress conditions contribute to the ecological success of weeds and their often rapid colonization of habitats. The current assessment focused on several plant families and included terrestrial, wetland and aquatic plants. The earliest records for these species was based primarily on information gathered from herbariums at the Royal British Columbia Museum and the University of British Columbia. The first known collections in British Columbia for most of the weeds identified in this assessment were between the end of the nineteenth century and...
Scott, L., Ralph, D.. 1999. Weed Invasion in the South Okanagan (in Proc. Conference Biology & Management of Species and Habitats at Risk). Ministry of Environment, Lands and Parks; University College of the Cariboo. Conference Biology & ManagementProceedings
Topic: Species and Ecosystems at Risk
Other Identifier: University College of the Cariboo
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