Vegetational Changes in Yosemite Valley, 1978 (Classic Reprint)

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Excerpt from Vegetational Changes in Yosemite Valley, 1978The Charter of the National Park Service requires conservation of park land, vegetation, and animals in essentially natural conditions for the enjoy ment of people. However, the presence of people causes many changes in park ecosystems. Each park manager must evaluate the origin and condition of the present system. This paper examines the existing vegetation of Yosemite Valley to determine changes that have occurred in the recent past and the extent to which they might continue.About the PublisherForgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.comThis 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.