Aspen forest is reclaiming the skyline of Yellowstone National Park after decades of controversy over efforts to return wolves to the ecosystem. The successful growth of a new Aspen overstory for the ...

The restoration of gray wolves in Yellowstone National Park has helped revive an aspen tree population unique to the region, a new study has found. Quaking aspen, one of the few deciduous tree species ...

Yellowstone National Park is celebrating an ecological milestone along with a key anniversary this summer, Oregon State University researchers report. A paper published in Forest Ecology and ...

Pine needle scale has become a common problem the past several years in the area. This insect is a problem on Austrian, ponderosa, scotch and mugo pines. The adult scale is a small black (there's a ...