Greater Yellowstone Ecosystem
http://biology.usgs.gov/s+t/noframe/r114.htm

U.S. Geological Survey


This U.S. Geological Survey website uses remotely sensed data to analyze landscape change in the Greater Yellowstone Area. It features maps and satellite images that show the geographical extent of the area, its management, land cover, and land use.

This resource is referenced here:
Subject: Geoscience:Geology, Biology
Resource Type: Audio/Visual:Maps, Images/Illustrations
Data Derived: Data Derived
Topics: Earth surface, Biosphere
Focus on Yellowstone: Policy and management