Rejecting conclusions of agency scientists, US Fish and Wildlife Service director says climate change impacts remain ‘ambiguous’
Federal wildlife officials plan to withdraw proposed protections for the snow-loving wolverine Tuesday, in a course reversal that highlights lingering uncertainties over what a warming climate means for some temperature-sensitive species.
Wolverines, or “mountain devils”, need deep snows to den. But while there is broad consensus that climate change will make the world warmer, drilling down to determine what that means for individual species remains difficult.
US Fish and Wildlife Service director Dan Ashe said predictions about climate change’s localized impacts remain “ambiguous”. Rejecting the conclusions of the agency’s own scientists, Ashe said that made it impossible to determine whether less snow cover would put wolverines in danger of extinction in coming decades.
The decision carries potential ramifications for other species affected by climate change – from Alaska’s bearded seals and the Pacific walrus to dozens of species of corals – as scientists and regulators grapple with limits on computer climate models.
The Associated Press obtained the decision prior to a formal announcement expected Tuesday.
“Climate change is a reality,” Ashe said. “What we don’t know with reliability is what does climate change mean for denning habitat that wolverines prefer.”
He added, “It’s possible wolverines are adapting and continuing to adapt.”
Federal wildlife officials last year had said future temperature increases could melt snowfields in high elevation mountain ranges in the lower 48 states where wolverines are found. They called for increased protections to keep the species from going extinct.
The first indication that stance had changed came last month, in leaked memo from a Fish and Wildlife regional director in Denver who overturned her staff’s recommendations for more wolverine protections.
Wildlife advocates blamed the reversal on pressure from state wildlife agencies. They said they intend to sue Ashe’s agency in federal court to force it to adopt protections.
Officials from western states including Montana, Wyoming, Utah and Idaho had opposed federal protections, and said the animal’s population has increased in some areas in recent decades.
That’s similar to what happened to the bearded seal. It received protections from the National Marine Fisheries Service in 2012 only to lose them last month, when a federal judge sided with Alaska officials who said 100-year projections of sea ice losses were based on speculation.
At least two other species, the American pika and black-footed albatross, were denied protections in recent years after the government concluded some of the animals might die off because of climate change, but enough would survive to keep the populations viable.
But Ashe said when the evidence is clear his agency will act, such as the 2008 decision to list the polar bear as a threatened species because of sea ice losses in arctic from global warming.
For wolverines, the withdrawal also means an end to the federal government’s proposal to re-introduce the species to the southern Rocky Mountains of Colorado, Wyoming and New Mexico. Ashe said he intends to encourage the state’s governors to pursue reintroductions on their own.
Once found throughout the Rocky Mountains and in California’s Sierra Nevada mountain range, wolverines were wiped out across most of the US by the 1930s due to unregulated trapping and poisoning campaigns, said Bob Inman, a wolverine researcher with the Wildlife Conservation Society.
In the decades since, they have largely recovered in the northern Rockies, where 250 to 300 of the animals live, but not in other parts of their historical range.
Steve Running, a University of Montana ecology professor and member of the Nobel Peace Prize-winning Intergovernmental Panel on Climate Change, said computer models used to predict future temperatures and precipitation amounts become less accurate as they go further out in time. That makes it hard to localize potential impacts.
But Running added that climate trajectories over recent decades give an accurate depiction of what’s in store and should be used by wildlife managers now to make long-term decisions. Over the past 50 years, he said, the snow melt in the northern Rockies has shifted two weeks earlier in the spring.
“If you take 50 more years and think of it as two more weeks earlier, wolverines are probably one of the classic poster children of a highly temperature-sensitive animal,” he said.
Exposing the Big Game 
Wolverines: More Political Management of Wildlife: Dan Ashe, USFWS, is setting a pattern of making political decisions versus scientific decisions and overruling his own staff and outside scientists. He has attempted it and still is with regard to the Gray Wolf in the north and Northwest and Midwest, the Mexican Wolf (Gray Wolf Bailey), now with the wolverine. He is likely responding to political pressures from state wildlife agencies who in turn primarily represent hunters and trappers and ranchers who as a group lead a war on wildlife, especially the predators. The USFWS should be sued by conservationists. Dan Ashe and the USFWS should primarily be advocating for wildlife, including the predators, for balanced wilderness ecology that of course includes the predators. In fact the wolverine is primarily in trouble because of a history of unregulated trapping and hunting and poisoning. They are down to few, maybe 300 in the northern tiered states and not where they used to be in the Rocky Mountains all the way to NM and they should be protected and efforts made to find niches for them in their old ranges. As to parochial responses that there is an ESA and EPA conspiracy to destroy parochial America, that is paranoid nonsense. The EPA and ESA are set up to protect us from ourselves and our excesses against wildlife and the environment as we pursue the dollar, efforts to spur us to live with wildlife and wilderness and the environment instead of against it. It is a shame that conservationists and environmentalist often have to fight with the state and federal agencies that should be on the side of wildlife and wilderness and the environment. Hunters, trappers, ranchers have always been a problem for ever diminishing wilderness and wildlife and now state wildlife agencies who are co-opted by licensing fees for their funding and conservative anti-wilderness, wildlife, public land, federal government state legislatures and their ilk in congress.
http://missoulian.com/news/state-and-regional/conservation-groups-to-sue-over-wolverine-protection/article
http://missoulian.com/news/state-and-regional/conservation-groups-to-sue-over-wolverine-protection/article
http://missoulian.com/news/local/feds-reverse-course-on-wolverine-protection/article_
http://missoulian.com/news/local/feds-reverse-course-on-wolverine-protection/article_
http://www.greatfallstribune.com/story/news/local/2014/08/12/feds-reverse-course-wolverines/13954507/
Thanks for the links.
We are compelled to use the best science available in decision making: That is always the case, not absolute certainty because we never have that. That is not the way science works. The wolverine has already been over-hunted and trapped and poisoned to less than 300 in the US when it was along the northern tiered states and south through the Rockies to NM. Climate change is very likely to add to this injury. It is a threatened species in the US, so it should have protections and even recovery efforts into old niches. Dan Ashe is rationalizing a political decision. He is establishing a pattern and call for his resignation or retirement should start ringing out.
You’re right on all counts Roger.
You notice they have not addressed the trapping issue at all. Using climate change as an excuse has got to be a new low. How do such a small minority of people have so much influence? Because the majority don’t give a shit.
No doubt trappers in MT, ID, and WY were a big influence against wolverine getting ESA protection.