Photo credit Frank T. van Manen/IGBST

NOTICE: The U.S. Fish and Wildlife Service’s June 30, 2017 final rule delisting the Greater Yellowstone Ecosystem grizzly bear population was vacated and remanded by the court on September 24, 2018. Therefore, grizzly bears throughout the lower 48 States are listed as threatened except where designated as an experimental population. For more information, visit the U.S. Fish & Wildlife Service Grizzly Bear Recovery page.

Yellowstone Ecosystem Subcommittee Membership

  • Jim White Idaho Fish and Game (chair)
  • Tricia O’Connor Bridger-Teton National Forest
  • Mike Volesky Montana Fish, Wildlife & Parks
  • Kim Liebhauser Bureau of Land Management
  • Derek Ibarguen Caribou-Targhee National Forest
  • Lee Miller Idaho Association of Counties
  • Lisa Timchak Shoshone National Forest
  • Brian Nesvik Wyoming Game and Fish Department
  • Tom Rice Montana Association of Counties, Beaverhead County
  • Lee Livingston Wyoming Park County Commission
  • Leander Watson Shoshone Bannock Tribes
  • Mary Erickson Custer-Gallatin National Forest
  • Rick Hotaling Bureau of Land Management
  • Mary D’Aversa Bureau of Land Management
  • Jodi Bush, US Fish and Wildlife Service
  • Sandi Fisher, US Fish and Wildlife Service

Information, Education & Outreach Subcommittee

  • Danielle Oyler (chair) Wildlife Management Institute 
  • Morgan Warthin Yellowstone National Park
  • Dustin Lasseter Wyoming Game and Fish 
  • Denise Germann Grand Teton National Park
  • Kimberly Johnston People and Carnivores
  • Laurie Wolf Montana Fish, Wildlife & Parks
  • Kylie Kembel Montana Fish, Wildlife & Parks
  • Morgan Jacobsen Montana Fish, Wildlife & Parks


  • Dan Tyers US Forest Service 
  • Frank van Manen Interagency Grizzly Bear Study Team
  • Hilary Cooley US Fish and Wildlife Service
  • Kelsie Dougherty Montana Fish, Wildlife & Parks

Subcommittee Meetings

Refer to the Meeting Calendar for upcoming meeting information.

Meeting Summaries

Yellowstone Ecosystem Subcommittee (2018-2019)

Yellowstone Grizzly Coordinating Committee (2017-2018)

Yellowstone Ecosystem Subcommittee (2016-2017)

Policy and Research Reports

Final Signed Conservation Strategy

NEPA Documents



The Interagency Grizzly Bear Study Team (IGBST) is an interdisciplinary group of scientists and biologists responsible for long-term monitoring and research efforts on grizzly bears in the Greater Yellowstone Ecosystem. The full list of their publications can be found on the IGBST website.

Yellowstone Ecosystem Description