Roam, Roam on the Range

On a cool, sunny May morning, Hilary Zaranek set out on horseback from her log house in southwestern Montana with one thing on her mind: wolves. Zaranek lives in the Centennial Valley, an immense expanse of grass- and wetlands ringed by the ragged peaks of the Centennial and Gravelly mountain ranges. The handful of people, mostly ranchers, who call this place home are vastly outnumbered by animals. Trumpeter swans and sandhill cranes are among the more than 260 bird species that inhabit the sweeping landscape, along with river otters, deer, elk, and, of course, loads of cattle. As grizzly and gray wolf populations have recovered in Yellowstone National Park (about 20 miles away), predators have been joining the ranks in increasing numbers, too. Cattle ranchers have traditionally been hostile to large carnivores; wolves were nearly hunted, trapped, and poisoned to extinction in the Lower 48 a few decades ago, due in part to the threat they posed to livestock. Zaranek, who has done wolf research in Yellowstone and Canada and now works for the Centennial Valley Association, is trying to ease that relationship. She is testing whether range riders on horseback and ATV can minimize conflicts between livestock and predators. Zaranek and two other riders she oversees are looking out for cattle from a half-dozen ranches in the area, including the J Bar L, a 30,000-acre operation where her husband works. These cowboys, who all happen to be women, are just one of the ways J Bar L is trying to manage its grass-fed beef operation to benefit livestock, people, wildlife, and habitat. To figure out how best to do that, the ranch works with numerous partners, including NRDC (disclosure), the Nature Conservancy, and the Sage Grouse Initiative. Scientists are studying, for instance, whether structures that mimic beaver dams, installed to rehabilitate stream channels, may benefit Arctic grayling, a rare native fish that sports flamboyant, turquoise-spotted dorsal fins. And on two greater sage grouse leks, biologists are investigating what factors enable populations of these iconic—and possibly soon-to-be-endangered—birds to nest successfully. But the ranch’s primary focus is moving the herd along in a way that mimics how bison once roamed: regularly rotating grazing to allow pastures to recover for months or even years between munching sessions, and ensuring the animals don’t cause lasting harm to sensitive areas, like springs and leks. As the herd chomps along, the ranchers put up portable, wildlife-friendly electric fences to keep them from wandering...more