As wildfires from coast to coast scorch large swaths of forest, sometimes changing it irreversibly, experts have zeroed in on an often overlooked casualty of…
Emergency Preparedness Minister Bill Blair said Monday that more than 47,000 square kilometres have burned so far this year, with more than 430 wildfires raging across the country. Canada is experiencing its worst wildfire season of the 21st century, he said.
“It can affect their lungs, it can change blood chemistry, lower oxygen levels, and so then you can also have effects on the immune system,” he said in an interview. “Those sorts of things can lead to changes in the demography, or the survival, growth and reproduction of animals as well.” A study published in February in the journal Ecology Letters examined the regenerative power of forest fires and concluded the news is not all bad for wildlife species.
Animals that have the ability to reproduce faster do better in a fire-prone environment, it noted. But it warned that fires in areas where they are not a regular occurrence are not particularly beneficial. “In these ecosystems, fire is more of a modern threat than an important process to maintain, and recent fire activity in these systems is not a likely driver of richness,” it said.
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