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Copyright © 2002 by the author(s). Published here under license by The Resilience Alliance.

The following is the established format for referencing this article:
Chapman, R. 2002. More globally coordinated approach needed to control aliens. Conservation Ecology 6(1): r9. [online] URL: http://www.consecol.org/vol6/iss1/resp9/

Response to Perrings et al. 2000. "Biological invasion risks and the public good: an economic perspective"

More Globally Coordinated Approach Needed to Control Aliens

Ross Chapman

Parks Canada

Published: April 12, 2002

I agree with the underlying argument of Perrings et al. (2002) that the problem of invasive species is largely economic and that economic solutions are required. However, on a practical level, I would argue that we will never be able to totally control alien species because of the global interconnectedness of our transportation systems. Sometimes, for example, alien species are spread unknowingly, even on aircraft tires. However, the authors are right when they say that we need a more coordinated global approach. Such an approach (and there is already some effort being made in this direction) should examine the science of aliens in their natural habitats (particularly natural predators), look at how they are transported abroad, and implement effective mechanisms for control once they arrive.


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Perrings, C., M. Williamson, E. B. Barbier, D. Delfino, S. Dalmazzone, J. Shogren, P. Simmons, and A. Watkinson. 2002. Biological invasion risks and the public good: an economic perspective. Conservation Ecology 6(1): 1. [online] URL: http://www.consecol.org/Journal/vol6/iss1/art1

Address of Correspondent:
Ross Chapman, Conservation Biologist
Elk Island National Park
Box 11, RR#1, Site 4
Fort Saskatchewan, Alberta
Canada T8L 2N7
Phone: (780) 992-2975

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