The Mummy Cave Project in Northwestern Wyoming
Author: Mummy Cave Project in Northwestern Wyoming
Publisher:
Published: 1978
Total Pages: 178
ISBN-13:
DOWNLOAD EBOOK →Author: Mummy Cave Project in Northwestern Wyoming
Publisher:
Published: 1978
Total Pages: 178
ISBN-13:
DOWNLOAD EBOOK →Author: Yellowstone National Park
Publisher:
Published: 1990
Total Pages: 764
ISBN-13:
DOWNLOAD EBOOK →Vol. 3-4 edited by John D. Varley and Wayne G. Brewster; Sarah E. Broadbent and Renee Evanoff, technical editors.
Author: National Research Council
Publisher: National Academies Press
Published: 2002-02-01
Total Pages: 199
ISBN-13: 0309083451
DOWNLOAD EBOOK →Ecological Dynamics on Yellowstone's Northern Range discusses the complex management challenges in Yellowstone National Park. Controversy over the National Park Service's approach of "natural regulation" has heightened in recent years because of changes in vegetation and other ecosystem components in Yellowstone's northern range. Natural regulation minimizes human impacts, including management intervention by the National Park Service, on the park ecosystem. Many have attributed these changes to increased size of elk and other ungulate herds. This report examines the evidence that increased ungulate populations are responsible for the changes in vegetation and that the changes represent a major and serious change in the Yellowstone ecosystem. According to the authors, any human intervention to protect species such as the aspen and those that depend on them should be prudently localized rather than ecosystem-wide. An ecosystem-wide approach, such as reducing ungulate populations, could be more disruptive. The report concludes that although dramatic ecological change does not appear to be imminent, approaches to dealing with potential human-caused changes in the ecosystem, including those related to climate change, should be considered now. The need for research and public education is also compelling.
Author: E. Arthur Bettis III
Publisher: Geological Society of America
Published: 1995
Total Pages: 163
ISBN-13: 0813722977
DOWNLOAD EBOOK →The Archaic Period is the longest and one of the most transitional of the cultural periods in North America. Its exact date varied across the continent, but it is distinguished from the earlier Paleo-Indian cultures by new styles of projectile points and other artifacts, and from the later prehistor