The New York Times’ Diane Cardwell and Clifford Krauss recently published a piece on the interaction between the Greater Sage Grouse (GSG, Centrocercus urophasianus) and fracking in Big Sky country. We thought it might be helpful to dig a little deeper into the issue given the sensitivity of this species’ as well as the Lesser Prairie-Chicken (Tympanuchus pallidicinctus) to habitat disturbance and the inevitable conflict between “energy independence” and the Endangered Species Act—the purpose of which “is to protect and recover imperiled species and the ecosystems upon which they depend.”
Gunnison Sage Grouse
We looked at the GSG’s range relative to hydrocarbon wells in Colorado and Wyoming keeping in mind the bird’s range encompasses 11 states and “more than 165 million resource-rich acres.” This analysis encompasses much of the bird’s range accounting for 52 percent (134,149 square miles) of the aforementioned acreage (Figures 1 and 2) and 37 and 373 GSG habitat parcels in Wyoming and Colorado, respectively.
The largest shaded areas on the map are the bird’s “Current Distribution” (67,879 square miles) in Wyoming and “Historic Habitat” in Colorado (24,505 square miles). GSG’s range in Colorado is far more spread out than in Wyoming with discrete north- and southwest concentrations. Important Birding Areas (IBAs) as defined by the Audubon Society often overlap with oil and gas extraction sites as well as endangered species habitat. Thanks to the Audubon Society’s Connie Sanchez and Tom Auer we were able to determine how many hydrocarbon production wells exist within these states’ IBA parcels. Wyoming is home to 39 IBAs, while Colorado contains 53 of these designated parcels. The average Wyoming IBA is 257 square miles, however, while Colorado’s average 59 mi2. In total these two states are home to 13,154 mi2worth of IBAs. These figures account for 3.7 percent of U.S. IBAs and 2.2 percent of IBA acreage.
1. Wyoming: 51 unconventional hydrocarbon wells in IBAs, 2,238 in primary GSG habitat, and for some perspective 1,983 of the latter are in what EIA has designated primary shale plays. At the present time 97 percent of Wyoming’s production wells lie within some segment of the GSG’s habitat.