The Forest Service employees surveyed 296 sites across 353,016 acres of Aspen-Sopris Ranger District land over 77 field days. They randomly selected survey sites and found 138 dams and 16 lodges ...

V. Phenotypic variation of trembling aspen of western North America. Forest Science 21, 319-328 (1976). Berveiller, D. & Damesin, D. Interspecific variability of stem photosynthesis among tree ...

It appeared that the aspen trees had stopped regenerating around ... and cottonwood recovery in Yellowstone National Park. Forest Ecology and Management, 184, 299-313.

Think of a tree and what comes to mind probably ... a grove of quaking aspen in Utah's Fishlake National Forest. Its name means "I spread" in Latin, and for good reason. Pando is among the largest ...

Volunteers have helped plant 38,000 trees to create ... and the wider Northern Forest, stretching from Liverpool to Hull. Native trees, such as oak, birch, aspen, rowan and wild cherry have ...