STANDfor Public Landsby More Than Just Parks
Greater Yellowstone Ecosystem
Stand · Find your defenders

Who’s defending Greater Yellowstone Ecosystem?

16 groups have it in their care

National park in Wyoming, 22M acres, managed by the National Park Service, the U.S. Forest Service and the Bureau of Land Management, designated in 1872.

Likely to care

Groups likely to care about Greater Yellowstone Ecosystem

These 9 groups are a guess from each group's stated mission and where it works, not a record of work on this fight. Give directly; nothing routes through us.

13 more work nearby but are not tied to Greater Yellowstone Ecosystem on the record

On the ground in Wyoming

Wyoming Outdoor CouncilThey work only in WyomingAdvocacyWyoming Wilderness AssociationThey work only in WyomingCoalitionWyoming Stock Growers Land TrustThey work only in WyomingLand TrustGrand Teton National Park FoundationThey work only in WyomingFriends GroupNOLS (National Outdoor Leadership School)Based in Lander, close to the groundStewardshipVital Ground FoundationWyoming is one of the 4 states they work inLand Trust

More ways in

Friends of the Bridger-TetonThey work only in WyomingFriends GroupFriends of the National Elk RefugeThey work only in WyomingFriends GroupAdvocates for the WestWorking this regionLegalContinental Divide Trail CoalitionWorking this regionTrailsWildEarth GuardiansWorking this regionLegalIntertribal Buffalo CouncilWorking this regionTribalWestern Values ProjectWorking this regionWatchdog

The situation

What’s happening to Greater Yellowstone Ecosystem

The last intact temperate ecosystem in North America, and the park boundary means nothing to the grizzlies, wolves, and bison that cross it daily. Beyond the line, mining proposals, grazing conflicts, and wildlife management rollbacks are dismantling the ecosystem that makes Yellowstone possible. One lease sale, one hazing operation, one bullet at a time.

  1. 1872Yellowstone established as first national park
  2. 2016Gold mine withdrawal protects 30,000 acres
Gold mining proposals near park boundary

Source: Greater Yellowstone Coalition

Bison management and hazing operations

Source: Montana Outdoor

No public comment window is open on Greater Yellowstone Ecosystem right now. A call script is ready on the Public Lands Action Network, and the groups above are how the fight gets funded and argued in the meantime.

Our reporting

What we’ve published on Greater Yellowstone Ecosystem

More Than Just ParksNailed to the Gates of Yellowstone: Ten Theses to Take Back Our Public Lands

Your move

How to stand for Greater Yellowstone Ecosystem

SpeakCall your representatives

A ready call script on Greater Yellowstone Ecosystem, plus any comment window as it opens.

Public Lands Action NetworkFollowWatch the map

Every threatened place in the country, tracked, with who stands for each.

Threatened Lands Map

Build my lineup around Greater Yellowstone Ecosystem: the leading group here opens it, and the other seats fill from this record.

Greater Yellowstone Ecosystem has defenders. It needs more.

The work is theirs. The backing is yours.

Meet the defendersEvery place, state and species
Sources and methodThe situation, timeline, and threats: the MTJP threatened-lands record for Greater Yellowstone Ecosystem, with per-item sources. Group crews and program ratios: IRS Form 990 via ProPublica Nonprofit Explorer, latest filed year, EINs on each group’s profile. Which groups are on the record for this place: MTJP editors tie a group to a fight only with a source link they have read, one link at a time. A group without one is shown as likely to care, a guess from the federal court record and the group’s own mission and footprint. Org-reported figures are always labeled. Data verified as of 2026-10-03. Nothing on this page is pay-to-play.