Excerpt from Adaptive Variation in Pinus Ponderosa From Intermountain Regions: II. Middle Columbia River System Forest managers rely on geographic patterns of adaptive variation to estimate the distance that seeds can be trans ferred from their origin before maladaptation begins to limit the productivity of artificial regeneration. However, previous studies were of insufficient power and scope for providing managers with this information. Consequently, a series of studies was begun to determine the appropriate limits to seed transfer for the lntermountain Region. While the first study of this series concerned populations from central Idaho (results published in Forest Science, Rehfeldt the present involves populations from the middle Columbia River system of northeastern Washing ton, northern Idaho, and western Montana. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.