How geography and city planning have made Edmonton a beacon for urban wildlife
CBC
In a warming climate, city life will become harder for wildlife. Warmer cities with less vegetation will be especially affected, a new study has found.
The study involved scientists from the United States and Canada gathering data on wildlife in 20 cities across North America using camera traps.
As the climate warms, Edmonton will be more hospitable to wildlife than more southern cities, the study's authors say, partially thanks to its geography and partially due to wildlife-friendly city planning.
"We have the good fortune to have a great deal of wildlife left still in our city. That's because of the river valley and ravine system, which is the largest contiguous protected natural habitat in any city in North America," said Colleen St Clair, a professor of biological sciences at the University of Alberta and one of the study's co-authors.
"That provides a tremendous amount of habitat for wildlife," which includes large animals such as moose, she said.
Edmonton's early managers "set aside the river valley for future generations. That was a tremendously forethoughtful thing to do," St Clair said. "We have this enormous natural area in Edmonton because of that forethought."
Edmonton's geographic location also contributes to its wildlife-friendly climate — cool winters, not overly warm summers and enough precipitation to allow plants, which drive the rest of the ecosystem, to flourish, she said.
"Edmonton has fairly high biodiversity because of both of those things," St Clair said. Edmonton's experience with droughts is "very mild," she added.
Despite this good news, Edmonton will not be exempt from the effects of climate change, said Catherine Shier, a conservation coordinator with the City of Edmonton, who also participated in the research.
The city could become between three and five degrees hotter by the 2050s, according to research by the City of Edmonton, she said.
By that time, the city may move on to having a more prairie-like climate, Shier said.
Today, Edmonton is located in a zone called central parkland, Shier said, which lies at the intersection of prairies from the south and boreal forests from the north. It's one of the most endangered ecological subregions in Alberta, she said.
"If we do move towards more of the prairie ecosystem, then the species composition of our vegetation may change and it may potentially drive out some of our larger mammals," Shier said.
The good news is that some of these effects can be mitigated by planting more vegetation and reducing the urban heat island effect.
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