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But with northern Canada warming about three times as fast as the rest of the world, climate change threatens the permanence of vast stretches of this frozen ground and the ecosystems and communities it supports. For the people living in the subarctic Dehcho region of the Northwest Territories, the changes have been stark. “Our Elders definitely noticed a real change in how things look,” Dehcho First Nations Grand Chief Gladys Norwegian told The Narwhal in an interview. “They don’t have to be scientists to know, they just feel it and see it.” While the impacts are felt most acutely in the North, permafrost thaw has implications for the global climate as well.
Share In Canada s North, landscapes such as caribou habitat found in Yukon s Tombstone Territorial Park, seen here, are increasingly at risk of dramatic change as permafrost melts. Scientists are now researching what s known as the permafrost carbon feedback loop, in which melting permafrost releases greenhouse gases that further amplify climate change. Photo: Jimmy Thomson / The Narwhal
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Fighting the feedback loop: why scientists are sounding the alarm on Canada’s melting permafrost
Nearly half of Canada’s land mass lies above permafrost. As it thaws, greenhouse gases stored for centuries in the frozen ground are released and once-stable land is susceptible to collapse
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IMAGE: Urban coyotes that subsist on human food have more human-like gut bacteria which could affect their health, immune function and possibly even their behaviour, according to a U of A study.. view more
Credit: Colleen Cassady St. Clair
A diet rich in human food may be wreaking havoc on the health of urban coyotes, according to a new study by University of Alberta biologists.
The research team from the Faculty of Science examined the stomach contents, gut microbiome and overall health of nearly 100 coyotes in Edmonton s capital region. Their results also show coyotes that consume more human food have more human-like gut bacteria with potential impact on their nutrition, immune function and, based on similar findings in dogs, even behaviour.