Generally, on the assessment of the economic impact of invasive alien species, there haven't been systematic assessments; and generally when there is a number it's viewed as conservative. I would share the observation that it's probably low.
October 4th, 2011 / 11:45 a.m.
Executive Director, Habitat and Ecosystem Conservation, Canadian Wildlife Service, Department of the Environment
Generally, on the assessment of the economic impact of invasive alien species, there haven't been systematic assessments; and generally when there is a number it's viewed as conservative. I would share the observation that it's probably low.
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