Author: E. Carlyle FranklinPublisher:
ISBN:
Category : Inbreeding
Languages : en
Pages : 24
Book Description
Survey of Mutant Forms and Inbreeding Depression in Species of the Family Pinaceae
Author: E. Carlyle FranklinPublisher:
ISBN:
Category : Inbreeding
Languages : en
Pages : 24
Book Description
Proceedings of the Symposium on Isozymes of North American Forest Trees and Forest Insects, July 27, 1979, Berkeley, California
Author: General Technical Report PSW.
Author: Publisher:
ISBN:
Category : Forests and forestry
Languages : en
Pages : 298
Book Description
Population Genetics of Forest Trees
Author: W.T. AdamsPublisher: Springer Science & Business Media
ISBN: 9401128154
Category : Science
Languages : en
Pages : 423
Book Description
Tropical climates, which occur between 23°30'N and S latitude (Jacob 1988), encompass a wide variety of plant communities (Hartshorn 1983, 1988), many of which are diverse in their woody floras. Within this geographic region, temperature and the amount and seasonality of rainfall define habitat types (UNESCO 1978). The F AO has estimated that there 1 are about 19 million km of potentially forested area in the global tropics, of which 58% were estimated to still be in closed forest in the mid-1970s (Sommers 1976; UNESCO 1978). Of this potentially forested region, 42% is categorized as dry forest lifezone, 33% is tropical moist forest, and 25% is wet or rain forest (Lugo 1988). The species diversity of these tropical habitats is very high. Raven (1976, in Mooney 1988) estimated that 65% of the 250,000 or more plant species of the earth are found in tropical regions. Of this floristic assemblage, a large fraction are woody species. In the well-collected tropical moist forest of Barro Colorado Island, Panama, 39. 7% (481 of 1212 species) of the native phanerogams are woody, arborescent species (Croat 1978). Another 21. 9% are woody vines and lianas. Southeast Asian Dipterocarp forests may contain 120-200 species of trees per hectare (Whitmore 1984), and recent surveys in upper Amazonia re corded from 89 to 283 woody species ~ 10 cm dbh per hectare (Gentry 1988). Tropical communities thus represent a global woody flora of significant scope.
Proceedings
Author: USDA Forest Service Research Paper SE.
Author: Southeastern Forest Experiment Station (Asheville, N.C.).Publisher:
ISBN:
Category : Forests and forestry
Languages : en
Pages : 918
Book Description
Monthly Catalog of United States Government Publications
Author: United States. Superintendent of DocumentsPublisher:
ISBN:
Category : Government publications
Languages : en
Pages : 1290
Book Description
February issue includes Appendix entitled Directory of United States Government periodicals and subscription publications; September issue includes List of depository libraries; June and December issues include semiannual index.
Wood Density Surveys of the Minor Species of Yellow Pine in the Eastern United States
Author: Alexander ClarkPublisher:
ISBN:
Category : Yellow pines
Languages : en
Pages : 598
Book Description
Some harvest options and their consequences for the aspen, birch, and associated conifer forest types of the Lake States
Author: North Central Forest Experiment Station (Saint Paul, Minn.).Publisher:
ISBN:
Category :
Languages : en
Pages : 776
Book Description
Author: