"Path Of the Pronghorn" In Wyoming A ‘High Risk’ Of Being Lost

Refining the scientific method for translating raw GPS collar data into a mapped corridor was a big reason for the delay, according to Game and Fish Deputy Chief Doug Brimeyer. Specifically, University of Wyoming researchers and others were developing a new “line buffer” method — and the final product was just published in the Journal of Applied Ecology

“We’re glad to see that the science has improved enough that we feel comfortable with what the line-buffer method has outlined as being the corridor,” Brimeyer said. “I think people might be questioning, ‘Well, if you had 20 years of data, why wouldn’t we have done something sooner?’ But I hope they can understand that when we used the [old method] it was a very, very large footprint.” 

Professional conservationists who’ve engaged in Wyoming migration politics welcomed the state taking a step toward designating the Path of the Pronghorn. 

“I feel really confident that Game and Fish is doing the right thing here,” said Meghan Riley, the public lands and wildlife advocate for the Wyoming Outdoor Council. “We’re really excited to support them and the animals.” 

Nick Dobric, The Wilderness Society’s Wyoming conservation manager, pointed out how the state’s potential auction of the tract known as the “Kelly Parcel” is yet another potential incursion into the pronghorn’s migration path. 

“Designating the Path of the Pronghorn and managing the state lands it crosses as vital habitats, and in cooperation with federal land management agencies, is exactly the kind of action needed if Wyoming officials want to lead the way in migration corridor conservation and ensure the future of our prized wildlife,” Dobric said in a statement. 

Game and Fish’s threat evaluation outlined other trends that don’t bode well for pronghorn. Sublette County’s human population grew 78 percent since 1990, adding barriers and stressors for the herd. Meanwhile, the herd just sustained its worst winter on record, a double whammy of weather and disease that left 75 percent of collared does dead by the spring thaw. 

Industrial development from the oil and gas and renewable energy industries was yet another “significant” pressure identified. 

“In the Pinedale Anticline Project Area adjacent to the Jonah Field, [Hall Sawyer] demonstrated that pronghorn both avoid energy infrastructure and spend considerably less time in traditional winter ranges once habitat fragmentation occurs due to development,” the document says. “More recently, solar energy developments have been constructed in the southern portion of the proposed corridor near Green River and along the Gateway West Transmission Line.” 

Fencing at the solar developments creates a “complete movement barrier to migrating pronghorn,” the evaluation says. 

Although it’s officially begun, there’s a protracted process ahead to designate the Path of the Pronghorn. First, the state’s seeking public comment — remarks are due January 5. There are also three upcoming public meetings: at 6 p.m. Nov. 16 in Pinedale, 6 p.m. Nov. 29 in Green River and 6 p.m. Nov. 30 in Jackson.

The plan is for the Wyoming Game and Fish Commission to consider moving forward with a designation at its March meeting, Brimeyer said. If the commission gives the agency the go-ahead, there are many steps after that. A more detailed “risk assessment” must be completed, and a stakeholder group will also be assembled to review the proposal. After that, the designation goes back to the Game and Fish Commission. 

And that’s not the end of it. Ultimately, the decision to designate the Path of the Pronghorn will be made by Gordon. Depending on how long it all takes, it could even be his successor making the final call.

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