A mountain chickadee peers down from its perch in a ponderosa pine. Click here for larger image. Photo by Jeff Mitton. As the most recent glaciers subsided, ponderosa pines move north from their ...

Premise of the study: Ponderosa pine (Pinus ponderosa Douglas ex P. Lawson & C. Lawson) exhibits complicated patterns of morphological and genetic variation across its range in western North America.

This is a preview. Log in through your library . Abstract Four types of pattern in the structure of ponderosa pine forests of central Oregon can be recognized: (1) differences in relative density, ...

HABITAT -- Even massive development can incorporate a measure of native habitat, as pointed out by Spokane Ponderosa Network, which is giving two new awards for outstanding conservation or restoration ...