Download or read book Soil vegetation Relationships Within the Ponderosa Pine Type in the Central Oregon Pumice Region written by C. T. Dyrness and published by . This book was released on 1960 with total page 472 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Plant Associations of the Central Oregon Pumice Zone written by Leonard A. Volland and published by . This book was released on 1985 with total page 222 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Phytosociology of the Ponderosa Pine Type on Pumice Soils in the Upper Williamson River Basin Klamath County Oregon written by Leonard A. Volland and published by . This book was released on 1963 with total page 332 pages. Available in PDF, EPUB and Kindle. Book excerpt: The study was conducted over approximately 191,000 acres in central Klamath County, Oregon. The research had three objectives: first, to describe and classify the seral and near-climax vegetation by using polyclimax principles; secondly, to determine the southern extension of five plant associations and one plant associes as previously described by C.T. Dyrness within the Weyerhaeuser Antelope Unit; and thirdly, to determine the inherent variability of these and other plant communities on young pumice soils over various elevation and relief patterns. The sampling was limited to those soils derived from aerially deposited pumice of Mt. Mazama origin. These included the widely distributed Lapine soil series and the less prevalent Longbell and Shanahan soil series. Their profiles are characterized by an A00, Al, AC, C, and D horizon sequence. A qualitative reconnaissance method permitted the gathering of vegetation, soil and physiographic data from a large number of variable-sized sample locations. These locations were statified to obtain a homogeneous vegetation-soil sampling unit. The association table was used to synthesize the analytical stand data into units of similar ecology. The mechanics of association table construction are described. The Pinus ponderosa/Purshia tridentata, the Pinus ponderosa/Purshia tridentata/Festuca idahoensis, the Pinus ponderosa/Purshia tridentata-Arctostaphylos parryana var. pinetorum, the Pinus ponderosa/Ceanothus velutinus-Purshia tridentata, the Pinus ponderosa/Arctostaphylos parryana var. pinetorum-Ceanothus velutinus and the Abies concolor/Ceanothus velutinus association plus the Pinus ponderosa/Ceanothus velutinus associes are defined and characterized as they occur in the study area. Factor compensation plays a significant role in determining the location of these classification units since any single plant community may occur over several different soil and physiographic situations. The appearance of these associations over the landscape is presently determined by the young soils and the local physiographic features. Therefore, their representative stands are designated as edaphic or topo-edaphic climaxes depending upon the location of these stands in relation to the typical elevational range of the association. The Pinus ponderosa/Ceanothus velutinus associes is considered to be an early successional stage of the Abies concolor/Ceanothus velutinus association as evidenced by the rapid encroachment in the Pinus ponderosa/Ceanothus velutinus understory of mesic-tending tree and herbaceous species. In addition, the characteristic species which are common to both communities express similar presence and dominance values, and their physical environments are similar. Heavy seed pressure from mesic species on locally favorable, micro-environments permit fragmentary expressions of the Abies concolor/Ceanothus velutinus association to appear in the adjacent ecosystems representative of more xeric-tending effective environments. The variability in the species' presence and relative dominance as they occur among and within ecological units can be partially explained by the species' autecological requirements in relation to the physical environments typical of each ecological unit. The influence of an effective environment upon some species is reflected in the growth form, vigor and phenology of these species and their competitive relationships to other species in the stand. The utilization of this ecological knowledge is related to the timber, range and wildlife resources of the Upper Williamson River Basin. As emphasized, however, effective resource management is achieved only by an understanding of the plant and animal environment, a realization of the biological principles related to these environments, and the economical regulation of resource use within the framework of these biological limitations.
Download or read book Response of Individual Ponderosa Pine Trees to Fertilization written by P. H. Cochran and published by . This book was released on 1973 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book USDA Forest Service Research Paper PNW written by and published by . This book was released on 1973 with total page 430 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Pumice Particle Bridging and Nutrient Levels Affect Lodgepole Pine and Ponderosa Pine Seedling Development written by P. H. Cochran and published by . This book was released on 1971 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book General Technical Report PNW written by and published by . This book was released on 1978 with total page 112 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Techniques for Inventorying Manmade Impacts in Roadway Environments written by Dale R. Potter and published by . This book was released on 1971 with total page 518 pages. Available in PDF, EPUB and Kindle. Book excerpt: Compares techniques for inventorying manmade impacts along roadway corridors, including ground surveillance, ground photography and aerial photography.
Download or read book Annotated Bibliography on Hydrology and Sedimentation 1966 1968 United States and Canada written by Engineering-Science, Inc and published by . This book was released on 1970 with total page 642 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Ponderosa Pine Bibliography II 1966 1970 written by and published by . This book was released on 1974 with total page 72 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Bird Population in Four Vegetational Types in Central Oregon written by Jay S. Gashwiler and published by . This book was released on 1976 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt: A long-term study of birds to obtain baseline population data in relatively undistrubed major plant types was started in Deschutes County, Oregon, in 1971. Four study areas were established.
Download or read book The Douglas fir ninebark Habitat Type in Central Idaho written by Robert Wilbur Steele and published by . This book was released on 1989 with total page 872 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Volcanic Activity and Human Ecology written by Payson D. Sheets and published by Elsevier. This book was released on 2013-09-24 with total page 663 pages. Available in PDF, EPUB and Kindle. Book excerpt: Volcanic Activity and Human Ecology deals with dating, chronology, stratigraphy, volcanic activity, and with the impacts of volcanism on animals, plants, human populations, and the environment. Some of the chapters explain how such findings must be weighed against other causes that influence human behavior and survival, such as factors of social customs, climatic change, shifting biogeographic patterns, disease, and the ability to adapt. Each of the chapters that assess the possible human response to volcanism does so by searching for multiple explanations of the archaeological record, avoiding the simple argument that people were dramatically and inevitably overcome by catastrophic geologic events. The book begins with discussions of volcanism as seen by geologists and pedologists. These include s a general overview of volcanoes and volcanism; a review of the production, dispersal, and properties of tephra and of the geologic methods used to study tephra; and the nature of volcanic soils and their economic impact. Subsequent chapters use the geologic and modern records to examine volcanoes as hazards to people. The final series of papers deals with the interrelationships between volcanism and human occupations as seen through the archaeological, paleobotanical, and paleozoological records.
Download or read book U S D A Forest Service Research Note PNW written by Pacific Northwest Forest and Range Experiment Station (Portland, Or.) and published by . This book was released on 1971 with total page 538 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Forest Harvest Residue Treatment Reforestation and Protection of Water Quality written by James M. Montgomery, Consulting Engineers and published by . This book was released on 1976 with total page 292 pages. Available in PDF, EPUB and Kindle. Book excerpt: A state-of-the-art reference on the protection of water quality in planning and conducting forest harvest, residue treatment, and regeneration operations based largely on data collected in Region X which includes Alaska. Intended to be an aid for dealing with pollution from nonpoint sources.
Download or read book Coniferous forest habitat types of northern Utah written by Ronald L. Mauk and published by . This book was released on 1984 with total page 886 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book U S Forest Service Research Paper PSW written by and published by . This book was released on 1966 with total page 534 pages. Available in PDF, EPUB and Kindle. Book excerpt:
