Peter has worked for The Nature Conservancy since 1986 as an Ecologist, as Program Manager for Grasslands Conservation and as a Field Representative.  His work included population studies of rare plants, designation of special management areas on federal lands, conservation of grasslands, and land protection using tools such as conservation easements. For the last fifteen years, he has focused on working with rancher-led community groups, including the Malpai Group, to support large landscape conservation.