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Predator decline spawns thorny biodiversity dilemma

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Yet another study describes cascading ecological impacts of declining predator populations.

Plant communities change as herbivoves spread

Staff Report

FRISCO — The global decline of large predators is leading to a loss of plant and tree diversity, scientists said after studying ecosystem changes in Africa. Recent research shows more than 75 percent of the world’s large carnivore species are in decline, with 17 of those species occupying less than half of their historical distributions.

The research by University of British Columbia zoologist Adam Ford and his colleagues involved tracking Africal impalas with GPS units to see how they respond to the presence (and absence) of predators, specifically whether the predators scare impala so much that impala will avoid areas where they are likely to be killed. They combined the tracking data with a high-resolution satellite image of tree cover and located carcasses to determine where impala are being killed. Continue reading

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Wildlife: Wyoming wolves get reprieve

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A federal judge has blocked Wyoming’s unsustainable wolf management plan. Photo courtesy USFWS.

Federal judge invalidates state hunting plan

Staff Report

FRISCO — Wyoming wolves will get at least a temporary reprieve from the state’s shoot-on-sight management plan, as a federal judge this week set aside a 2012 decision that turned wolf management over to the state.

The state plan, approved by the Wyoming legislature, would allow hunters and trappers to kill most wolves outside of Yellowstone National Park, leaving only a token population in the park — hardly in keeping with the spirit and intent of the Endangered Species Act. Continue reading

Biodiversity: Will grizzlies return to the North Cascades?

Grizzlies are roaming farther north and encroaching on Polar bear habitat, PHOTO COURTESY U.S. GEOLOGICAL SURVEY.

Will grizzlies once again roam the North Cascades? Photo courtesy U.S. Geological Survey.

National Park Service launches 3-year study on possible restoration

Staff Report

FRISCO — In a big move for grizzlies and wild ecosystems, the National Park Service this week launched a three-year environmental study to evaluate to possibility of restoring the apex predators to the North Cascades.

“This is the first stage of a multi-step process to help inform decisions about grizzly bear restoration in the North Cascades ecosystem,” said National Park Service Director Jonathan B. Jarvis. “The National Park Service and our partners in this effort haven’t made any decisions about the bear’s restoration at this time as federal law requires us to look at a range of options, including not restoring grizzlies to the area.” Continue reading

Study: Colorado pikas holding their own

Colorado pika

A Quandary Peak pika enjoys some sunny weather recently on his rocky ledge. bberwyn photo.

Plenty of good habitat left in the Colorado Rockies, researchers conclude

By Summit Voice

FRISCO — New surveys by Colorado wildlife biologists suggest that pikas seem to be holding their own as temperatures rise in the Rocky Mountains. The study found that pikas remain well distributed in the Colorado high country.

“In their primary habitat, mainly at and above timberline where there is lots of talus, we find pikas almost everywhere we look,” said Amy Seglund, a species conservation biologist for Parks and Wildlife based in Montrose. Continue reading

Wildlife: Feds punt on wolverine protection

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Wolverine habitat in the West.

U.S. Fish and Wildlife Service will face new lawsuit over failure to give the species endangered species status

By Bob Berwyn

FRISCO — In a decision that’s certain to trigger a new round of lawsuits, the U.S. Fish and Wildlife Service announced today that it won’t put wolverines on the Endangered Species List.

The decision was made by the agency’s regional directors from the areas where wolverines are native. In a release, the U.S. Fish and Wildlife Service director Dan Ashe contradicted all the best available science from his agency’s own biologists, claiming that there’s too much uncertainty about global warming impacts to list wolverines. Continue reading

Climate: Increase in Arctic wildfires likely to have big impact on caribou herds

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Alaska caribou. Courtesy USGS.

Shifts in wildlife populations will affect Native American communities

Staff Report

FRISCO — Some big caribou herds in Alaska could lose more than 20 percent of their habitat as growing wildfires destroy critical foraging areas. Those changes will likely affect generations of Native American families whose existence is spiritually linked with the Arctic ungulates, researchers with the U.S. Geological Survey reported in a new study.

Rapidly warming Arctic temperatures are to blame — global warming increases the flammability of lichen-producing boreal forests, which are important winter habitat for caribou herds. Continue reading

Colorado: Mule deer summit set for Aug. 9

Colorado mule deer.

Colorado mule deer. bberwyn photo.

State biologists to unveil plan aimed at bolstering deer herds

Staff Report

FRISCO — After studying the decline of Colorado mule deer populations for the past few years, state wildlife biologists are ready to unveil a new strategy aimed at stabilizing an bolstering deer numbers. Western Slope residents will be able to get an early look at the plan during the upcoming Aug. 9 mule deer summit in Glenwood Springs.

The event is free and open to the public. CPW and The Keystone Center invite public review and comments on the West Slope Mule Deer Strategy draft as it serves as a guide to future CPW efforts to increase mule deer populations in Western Colorado.
Continue reading

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