Download or read book Contributions to the Plant Ecology of the Oregon Coastal Sand Dunes written by Alfred M. Wiedemann and published by . This book was released on 1966 with total page 510 pages. Available in PDF, EPUB and Kindle. Book excerpt: Sand dunes are found along the coasts of most of the large land masses of the world. Because of their proximity to man and his activities, the maritime sand dunes of Europe, particularly Germany, France, Holland and Scandinavia, have the longest history of stabilization activities and botanical investigation. There are coastal dune areas, some of great extent, in Africa, tropical Asia, Australia, and South America. In general, little published information is available concerning these areas. Ecological studies of coastal dune vegetation and environment have been most extensive in Great Britain, and to a lesser extent, in North America. Of the North American coastal dunes, those of the east coast have received considerable attention while those of the west coast have been largely neglected. Along the Oregon coast are found some of the most extensive and best developed coastal sand dune areas in North America. Occurring on some 225 km. of the state's 500 km. of ocean facing coastline, these areas are made up of a great variety of dune landscape features and present unique conditions for the development and maintenance of vegetation. There are many places in this dune area where the strong, constant winds have eroded the sand surface to or near the water table resulting in a stabilized surface - the deflation plain - which provides an excellent starting point for the development of vegetation. After preliminary ground and air reconnaissance, 11 deflation plains were selected for detailed study, ranging in location from Sand Lake on the north to Tahkenitch Creek on the south. These deflation plains and their location are described in detail. Vegetation data (species and cover) were taken on a total of 134 sampling stands, each consisting of five meter-square quadrats for herbaceous vegetation, and one 6 x 6 meter quadrat for shrub and forest vegetation. The species and stand data we arranged on comparative charts so as to bring together stands with mutually occurring species. This resulted in the delineation of seven communities with definite successional relationships. Primary succession begins with one of four herbaceous communities: dry meadow, meadow, rush meadow or marsh. Succession then proceeds to low shrub, tall shrub and finally forest. The dry meadow is dominated by three species: Lupinus littoralis, Ammophila arenaria and Poa macrantha. The site is dry with no standing water at any time. Sand deposition and deflation occur in varying degrees. The important species of the meadow are Festuca rubra, Aira praecox, Hypochaeris radicata and Fragaria chiloensis. The surface is dry except for short periods of standing water during the winter months. There is no sand deposition. The rush meadow is characterized by its dense growth of Trifolium willdenovii and Juncus phaeocephalus. The site is low and moist, with water standing on the surface during the winter months. The marsh is found on areas which are quite damp-water stands on the surface for around six months of the year, and is just below the surface for the remainder of the time. It is made up of dense stands of Carex obnupta and Potentilla anserina. The low shrub community is an open stand of Salix hookeriana, Gaultheria shallon, Vaccinium ovatum and Myrica californica. This develops into a tall shrub stage which is frequently an impenetrable thicket with increasing dominance of seedlings of Pinus contorta and Picea sitchensis. Development of a forest of Pinus and Picea is very rapid. If the area is free from disturbance long enough, the shorter lived Pinus dies out, leaving a forest of Picea. The deflation plains represent only part of the many aspects of the total dune landscape still awaiting investigation. The increasing importance of the Oregon coastal dunes to industry and recreation make imperative the initiation of long term ecological studies.
Download or read book Plants of the Oregon Coastal Dunes written by Alfred M. Wiedemann and published by . This book was released on 1999 with total page 132 pages. Available in PDF, EPUB and Kindle. Book excerpt: Plants of the Oregon Coastal Dunes offers a useful, informative guide for visitors to the Oregon Dunes National Recreation Area or anyone spending time on the state's remarkable beaches. The standard reference on the Oregon dunes for thirty years, this handy guide identifies those plants most likely encountered and serves as a general introduction to the ecology of dune areas. The first two sections explain the natural history of dunes and describe plant communities associated with dunes and how they change over time. The final section provides an easy-to-use key to ninety common dune plants. Each species profile includes a photograph, a detailed description, and information on habitat and range.
Download or read book The Ecology of Pacific Northwest Coastal Sand Dunes written by Alfred M. Wiedemann and published by . This book was released on 1984 with total page 148 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Plant Associations of the Oregon Dunes National Recreation Area written by John A. Christy and published by . This book was released on 1998 with total page 192 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book An Ecological Characterization of the Pacific Northwest Coastal Region written by and published by . This book was released on 1980 with total page 620 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book An Ecological Characterization of the Pacific Northwest Coastal Region Data source appendix written by and published by . This book was released on 1980 with total page 80 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Sitka Spruce written by Robert H. Ruth and published by . This book was released on 1970 with total page 260 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book USDA Forest Service Research Paper PNW written by Pacific Northwest Forest and Range Experiment Station (Portland, Or.) and published by . This book was released on 1970 with total page 262 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Annotated Bibliography on the Ecology and Stabilization of Coastal Sand Dunes Mining Spoils and Other Disturbed Areas written by J. E. Coaldrake and published by . This book was released on 1974 with total page 112 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Vegetation of Oregon Washington written by Jerry F. Franklin and published by . This book was released on 1969 with total page 226 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Natural Vegetation of Oregon and Washington written by Jerry F. Franklin and published by . This book was released on 1973 with total page 430 pages. Available in PDF, EPUB and Kindle. Book excerpt: Major vegetational units of Oregon and Washington and their environmental relationships are described and illustrated. After an initial consideration of the vegetation components in the two States, major geographic areas and vegetation zones are detailed. Descriptions of each vegetation zone include composition and succession, as well as discussion of variations associated with environmental gradients. Three chapters treat the forested zones found in the two States. Major emphasis is on the distinctive mesic temperate forests found in western Washington and northwestern Oregon. The interior valley forests, shrub lands, and prairies found between the Coast and Cascade Ranges in western Oregon are treated in a single chapter as are subalpine and alpine mosaics of tree-dominated and meadow communities. Unusual habitats, such as areas of recent vulcanism, serpentines, and ocean strand, are individually described. Soils, geology, and climate are considered in broad outline in an early chapter and in greater detail within discussions of individual geographic areas and vegetation zones. Appendices are included for definition of the various soil types, scientific and common plant names, and a subject index. An extensive bibliography is included to direct the reader to other references.
Download or read book Vegetation of Oregon Washington written by Charles N. Mann and published by . This book was released on 1968 with total page 534 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Natural History of Oregon Coast Mammals written by and published by . This book was released on 1981 with total page 524 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Dry Coastal Ecosystems written by E. van der Maarel and published by . This book was released on 1993 with total page 658 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Catalog of Copyright Entries Third Series written by Library of Congress. Copyright Office and published by Copyright Office, Library of Congress. This book was released on 1970 with total page 1474 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Coastal Ecological Systems of the United States written by Howard T. Odum and published by . This book was released on 1974 with total page 496 pages. Available in PDF, EPUB and Kindle. Book excerpt: A collection of short poems, mainly on themes suggested by the natural world.
