Greater Yellowstone Ecosystem
Stand · Find your defenders

Who’s defending Greater Yellowstone Ecosystem?

1 group has 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.

The defenders

The groups doing the most work here

One group is on the record for Greater Yellowstone Ecosystem, each tied to it by a source our editors read, in the order they carry the weight. The other 8 are likely to care: a guess from mission and footprint, with no source tying them to this fight. Give directly; nothing routes through us.

Leading the fight

Likely to care: a guess from mission and footprint, no source ties them to this fight

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

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

Your move

How to stand for Greater Yellowstone Ecosystem

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.

1 group on the record, 8 more likely to care, Yellowstone Forever with 150 staff + 99 volunteers. That is who is holding it. Find your way in.

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.