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Scientists propose amphibian protection
Date:5/1/2014

an population."

Mindful of an opportunity to help amphibians, the researchers collaborated with UW colleagues to develop new maps and hydrological models of climate impacts specific to mountainous regions.

They are using these tools along with biological survey data to identify regions where native species are most threatened by the combined effects of climate change and fish. They then hope to work with area managers who would implement fish removals.

"Our work suggests that removing fish from strategic sites may restore resilience to landscapes where inaction might lead to tipping points of species loss," says Palen.

The SFU Earth to Ocean Research Group member has been collaborating with Adams since 1999 to evaluate threats to amphibians in mountainous regions.

"We hope newly developed wetland modeling tools can improve climate adaptation action plans so that intact ecosystems persist in the face of a changing climate," says Palen.

Hydrologists and remote sensors helped the researchers develop models that project a substantial loss of wetlands in America's western mountains over the next 40 to 80 years.

They note the combined threat of climate change and fish to amphibian survival also exists in B.C. but records of where fish have been introduced are scarce.

The researchers remind us that 95 per cent of the American West's lakes are currently stocked with non-native fish, so removing them from a few sites doesn't threaten recreational fishing opportunities.


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Contact: Carol Thorbes
cthorbes@sfu.ca
778-782-3035
Simon Fraser University
Source:Eurekalert  

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