There may be as many as 1,000 introduced and native invasive species in B.C. Most introduced species
do not result in a pervasive cascade of ecological changes, but there is the potential for significant impacts
when a novel species is able to successfully enter and thrive within an ecosystem, replacing endemic
species and possibly altering pre-existing trophic relationships. When significant ecosystem changes take
place, there is the added potential of direct impacts to human populations, as well as impacts upon the
ecosystem services which human communities may depend upon.
The goal of the project was to begin to frame an ecological and economic analysis of invasive animal
species; selecting case studies which represent different taxonomic groups and a range of issues (see
Section 1.2). Preliminary impact hypotheses (e.g. Figure 4.2) were created for 5 invasive groups: zebra
and quagga mussels, European fire ant, Asian carp, Sitka black-tailed deer and European starling; but
special quantitative emphasis was placed on the first two groups, since they were expected to provide the
strongest foundation of recent empirical economic research. Zebra mussel and quagga mussel are closely
related species which have not yet been observed in B.C., while European fire ant is now found in some
locations, mostly in southwestern B.C....
Robinson, David C.E., Duncan Knowler, David Kyobe, Patricia de la Cueva Bueno. 2013. Preliminary Damage Estimates for Selected Invasive Fauna in B.C.. Province of B.C.; Ministry of Environment
Topic: Economics and the Environment
Keywords: zebra mussels, quagga mussels, European fire ant, Asian carp, Sitka black-tailed deer, European starling, ESSA
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