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Fox and Coyote Trapping Records Reveal the Major Impact of Wolves Across North America

It turns out that wolves have a greater influence than expected when it comes to smaller predators further down the food chain. Using coyote and red fox fur trapping records, scientists have recorded how these larger predators influence the ecosystem around them.

“As wolves were extirpated across the southern half of North America, coyotes dramatically expanded their range,” said Thomas Newsome, one of the researchers, in a news release. “They were historically located in the middle and western United States, but they dispersed all the way to Alaska in the early 1900s and to New Brunswick and Maine by the 1970s.”

As coyotes have expanded, they’ve actually become a major concern for the livestock industry. In fact, researchers estimated that losses due to coyote predation on sheep and cattle was about $40 million in 2004…

Read the entire article on scienceworldreport.com: Fox and Coyote Trapping Records Reveal the Major Impact of Wolves Across North America

Additional Resources

A continental scale trophic cascade from wolves through coyotes to foxes – Thomas M Newsome and William J Ripple

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