Climate change invites alien invaders -- Is Canada ready?

Jan 19, 2012

A comprehensive multi-disciplinary synthesis just published in Environmental Reviews reveals the urgent need for further investigation and policy development to address significant environmental, social and economic impacts of invasive alien species (IAS) and climate change. "Effects of climate change on the distribution of invasive alien species in Canada: a knowledge synthesis of range change prediction in a warming world" is the collaborative effort of a team of dedicated researchers at York University's Institute for Research and Innovation in Sustainability (IRIS).

"Many species' distributions are already changing in response to a warming climate, and ecosystems are predicted to become more vulnerable to invasive species as climatic barriers are eliminated," says author Dr. Andrea Smith, IRIS Senior Fellow, currently conducting a legislative review of invasive species policy in Canada for the Ontario Ministry of Natural Resources and the Canadian Aquatic Invasive Species Network. "The interactive and invasive species are expected to have profound consequences for environments, economies and societies worldwide. For example, many new will likely spread to the Arctic, and coordinated circumpolar disease monitoring and targeted healthcare planning will be needed to handle this new pressure. Yet, these two drivers of are rarely considered jointly in policy and management initiatives."

This review reveals the barriers to predicting invasive species' range changes under , including the complexity of the issue, lack of , and failure to address climate change–IAS interactions in research and policy. Despite the multi-disciplinary nature of the issue, very few studies examine the socio-economic dimensions of the problem and research has tended to focus on predictions of how the distribution of existing invasive species in Canada (including mountain pine beetle, gypsy moth, smallmouth bass and lyme disease) will be affected by climate change, rather than on potential invasive species that might expand their range into Canada.

"This is just another example of how climate change is a big threat multiplier," notes Dr. John P. Smol, Editor of Environmental Reviews and professor at Queen's University where he also holds the Canada Research Chair in Environmental Change. "We simply have not even begun to understand all the negative repercussions of this problem." This synthesis is the first to characterize the current state of knowledge on this critical issue in Canada. According to Smith, this knowledge synthesis approach is useful for identifying both what we know and what we don't know, so that research, policy, and management can be targeted toward addressing those gaps. And, although knowledge of the impact of climate change on distribution is incomplete, scientific research is accumulating which can be used as the foundation for policy development.

Explore further: PacifiCorp Energy pleads guilty in bird deaths (Update)

More information: Smith, A., Hewitt, N., Klenk, N., Bazely, D.R., Yan, N., Wood, S., Henriques, I., MacLellan, J.I., Lipsig-Mummé, C. 2012. Effects of climate change on the distribution of invasive alien species in Canada: a knowledge synthesis of range change projections in a warming world. Environmental Reviews, 20, 1-16. doi: 10-1139/a11-020

Provided by Canadian Science Publishing

not rated yet
add to favorites email to friend print save as pdf

Related Stories

Threatened or invasive? Species' fates identified

Jun 13, 2008

A new ecological study led by a University of Adelaide researcher should help identify species prone to extinction under environmental change, and species that are likely to become a pest.

Plants protect from climate impacts

Aug 02, 2011

Native vegetation must be restored to protect Australia’s unique ecosystems from the impacts of climate change, according to scientists from the Australian National University.

Recommended for you

Study finds tropical fish moving into temperate waters

Dec 19, 2014

Tropical herbivorous fish are beginning to expand their range into temperate waters – likely as a result of climate change – and a new international study documents the dramatic impact of the intrusion ...

User comments : 0

Please sign in to add a comment. Registration is free, and takes less than a minute. Read more

Click here to reset your password.
Sign in to get notified via email when new comments are made.