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Know the West

Conservation calculus

Are trade-offs in Wyoming's Jonah natural gas field a boon for wildlife?


When Otis Carney's truck first rounded the bend of Black Butte in 1963, the Bar E Bar Ranch unfolded below him, nestled between western Wyoming's Gros Ventre and Wind River Mountains, with the Green River cutting lazy S-turns through rolling sage. "It was pretty much love at first sight," says his son, John Carney, who now owns the ranch with 40 family members.

Though it's still a cattle outfit, Otis, a novelist, originally bought the property as a getaway from Los Angeles, where he wrote for TV and film. Before his death in 2006, he worried about the ranch's fate, given that nearby ranches were turning into subdivisions. "It was always my father's dream to be able to protect the Upper Green," John says.

That dream was also shared by conservation groups. The 5,500-acre ranch is home to grouse, elk, moose and mule deer and straddles the southern end of a bottleneck in the "Path of the Pronghorn" -- a 6,000-year-old, nearly 200-mile-long migratory route from summer range in Grand Teton National Park to winter range in the Green River Valley.

Until December 2009, this pinch point -- one of three -- was the only one on the route not formally protected from migration-blocking development. That's when the Carney family put 2,400 acres under a conservation easement, using funding from another world-class resource: the Jonah Field, estimated to hold 14 trillion cubic feet of natural gas -- enough to heat 8.4 million homes for 20 years.

Back in 2006, Encana Corp. and BP America Production Co. paid $21.5 million and $3 million respectively into a fund to make up for the environmental impacts of drilling an unusually dense concentration of wells on 30,000 acres in the field. That money has been used outside the field to help put nearly 35,000 private acres under conservation easement. It's also paid for grazing improvement plans on 78,500 acres of private and public lands, plant surveys to monitor rangeland health, and wildlife projects like enhancing sage grouse habitat and altering fences to ease the passage of migrating animals. Those involved laud it as a model for extractive industries.

The original goal was to make improvements on 90,000 acres outside the field. But "we feel that we have directly impacted 600,000 acres, so in my book that's very successful," says Jim Lucas, who until May was the Bureau of Land Management coordinator of the Jonah Interagency Office in Pinedale. That's where the BLM, Wyoming Game and Fish, Wyoming Department of Agriculture and Wyoming Department of Environmental Quality dole out the mitigation money for both Jonah and the nearby Pinedale Anticline gas field, which established its own $36 million fund in 2008.

But with unclear protocols for monitoring the Jonah program's effects on wildlife and a comprehensive baseline assessment of the quality of habitat in the Jonah Field three years overdue, it's difficult to gauge the fund's success beyond raw acreages. Without that information, and with only $2.4 million in uncommitted funds remaining, some conservationists wonder whether the amount of money set aside was ever enough.

When Encana, BP and other operators first proposed drilling 3,100 new wells in the Jonah Field in 2002 -- allowing one well-pad every 10 acres rather than every 80 acres to tap the gas trapped in sandstone pockets below -- development was already under way. Five hundred wells had been approved and roads, pipelines and drill rigs crisscrossed the sage, increasing pressure to approve infill. The BLM decided it would be impossible to alleviate the environmental damage within the field itself. So, with support from Wyoming Gov. Dave Freudenthal, D, Encana proposed to pay for habitat improvements and other projects in places around Pinedale where there wasn't drilling. In addition, BLM capped how much land in the field could be disturbed at once, requiring companies to replant and demonstrate regrowth before carving up new areas. "We thought," says Encana spokesman Randy Teeuwen, "that it was a responsible thing to do."

At the time, some conservationists warned that the model could enable industries to buy their way out of regulations. Critics also stressed that it shouldn't replace best management practices for drilling. But everyone saw that wildlife habitat was already compromised in the gas fields: Full development in Jonah and the Pinedale Anticline has displaced or led to declines in sage grouse, mule deer, ground-nesting songbirds and other species, studies show. A well-stocked fund could help preserve key habitat by preventing development in other threatened areas, especially pronghorn and mule deer migration corridors. And off-site protected areas could serve as refuges for wildlife that might return to a future, reclaimed Jonah Field.

So in 2006, BP hired Joseph Kiesecker, a lead scientist with The Nature Conservancy, to devise a method to guide Jonah-funded projects and measure outcomes. The Conservancy had been compiling data on biodiversity in Wyoming for more than a decade to determine conservation priorities. Working with the Jonah Interagency Office, Kiesecker used that data in a computer model  to identify key species displaced by development, and to suggest mitigation elsewhere to compensate for those losses. The offset program assumes Jonah will be a total loss for burrowing owl habitat, for example, so it sets a goal of preserving and restoring 33,828 acres for owls off-site. Kiesecker's team and the Jonah office selected nine biological targets, which include preserving or restoring six sage grouse leks, or breeding areas, 8,483 acres for the rare Cedar Rim thistle, and 19,121 acres of pronghorn migration routes. Kiesecker says preliminary results indicate the Jonah mitigation fund is successfully preserving places with those values.

The fund has helped purchase 13 conservation easements in just three years on an area larger than the Jonah infill -- doubling the acreage previously under easement in the Green River Valley. Many protect important linkages between high-elevation summer range on national forest and lower-elevation wintering grounds on BLM lands. And all but one include conservation-oriented grazing plans, covering both private land and tens of thousands of acres of adjacent grazing allotments on public lands.

The plans call for running livestock only at certain times or fencing certain areas to improve sage grouse range. If grazing is delayed, spring wildflowers can flourish, increasing the abundance of insects, critical food for sage grouse chicks. The Carney family's more than 8,000-acre grazing allotment on nearby national forest, for example, has been designated as a temporary grazing reserve for cattle from other allotments in need of restoration.

The Conservation Fund, a nonprofit that helps local governments and conservation groups preserve land, has done the bulk of the deals -- six easements, covering just under 10,000 acres -- with about $4.5 million from Jonah and another $5.7 million from other partners. In June, the Jonah Fund contributed $5 million (with another $6 million from the Pinedale Anticline fund) to the landmark $19.7 million purchase of development rights on about 19,000 acres of the Sommers-Grindstone ranches in Sublette County, where the Jonah Field is located. In addition to protecting wildlife habitat, the arrangement guarantees public fishing access along nearly five miles of the Green River.

Such deals head off another major threat to the remaining sagebrush habitat in this corner of Wyoming: housing sprawl, with its associated fencing, traffic and pets. Sublette County's population grew by nearly 50 percent over the last decade while the rest of the state grew by 10, according to the U.S. Census Bureau. The Carneys had their ranch under contract to sell before they decided to go with the easement and prevent future development on 2,400 acres. The family previously donated an easement on another 1,400 acres and is working to place the ranch's remaining unprotected areas under easement as well.

But conservation easements don't necessarily prevent future oil and gas drilling, especially if the landowners don't hold rights to the underground minerals. The Carney family owns the ranch's mineral rights and agreed to prohibit energy development within the easement. For easements where families don't own the minerals, Kiesecker's model estimates the risk of future drilling so managers can take it into consideration before deciding to buy an easement.

Kiesecker and others stress that, in general, the Conservancy model is best applied prior to drilling in order to identify trade-offs before decisions are made. Some areas are irreplaceable and should be put off-limits altogether, he adds.

The amount in the fund is also an issue. No efforts were made to calculate what it would actually cost to replace what is being lost from the Jonah Field, says Rollin Sparrowe, a retired federal wildlife biologist and a member of the Theodore Roosevelt Conservation Partnership, which is suing the BLM over drilling's impacts on wildlife in the nearby Anticline. "Not only is the $24 million picked out of the air, how can anybody conceive of that even being adequate?"

Linda Baker of the Upper Green River Valley Coalition, an environmental watchdog group, also worries that there has been no clear protocol for selecting projects and monitoring outcomes on the ground. She has asked the interagency office to verify how each project is replacing lost habitat and to report those results to the public. She and other critics say not enough is being done to measure which drilling activities are having the greatest impact on wildlife.

Wyoming Game and Fish habitat biologist Dan Stroud, who works in the Jonah office, acknowledges that one study meant to measure the current quality of wildlife habitat within the Jonah Field is three years overdue. Baseline data has been collected, he says, but state and federal agencies are still trying to figure out the best way to analyze it. The Jonah Interagency Office also says it will monitor all fund-related wildlife projects. Game and Fish already routinely monitors wildlife population trends, and the fund has paid for baseline plant surveys that will be used to track range improvements from the planned seasonal grazing rotations.

Stroud believes the fund has clearly helped wildlife. On a summer morning before sunrise, state biologists gather on the Cottonwood Ranches, where drilling money has helped pay for conservation easements on almost 4,670 acres, including 12 miles of riparian habitat, and a grazing plan for 36,000 acres of adjacent BLM land. In routine surveys over the past three years, the biologists have counted from 84 to 265 birds along four miles of stream here. Though extremely variable, the numbers are consistently high, indicating that this is some of the Upper Green River Valley's prime grouse habitat.

Without the fund, Stroud says, this willow-lined creek through sagebrush uplands, which offers ideal access to water and shrubs for grouse to raise chicks, might have been covered with houses.  Now, it's protected for wildlife, he says. "The Carney, Cottonwood and Sommers-Grindstone are probably some of the highest-value easements that we've got."