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Author: Chi-Wu Wang
Publisher:
ISBN:
Category : Ponderosa pine
Languages : en
Pages : 32
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Book Description
Author: Chi-Wu Wang
Publisher:
ISBN:
Category : Ponderosa pine
Languages : en
Pages : 32
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Book Description
Author: Jiwu Wang
Publisher:
ISBN:
Category : Ponderosa pine
Languages : en
Pages : 36
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Book Description
Author: David F. Van Haverbeke
Publisher:
ISBN:
Category : Genetics
Languages : en
Pages : 24
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Book Description
Author: G. E. Rehfeldt
Publisher:
ISBN:
Category : Forest genetics
Languages : en
Pages : 20
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Book Description
Author: Frank C. Sorensen
Publisher:
ISBN:
Category : Plant ecological genetics
Languages : en
Pages : 36
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Book Description
Author: Roy R. Silen
Publisher:
ISBN:
Category : Ponderosa pine
Languages : en
Pages : 12
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Book Description
Author: W.T. Adams
Publisher: Springer Science & Business Media
ISBN: 9401128154
Category : Science
Languages : en
Pages : 423
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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.
Author: Jane L. Hayes
Publisher:
ISBN:
Category : Bark beetles
Languages : en
Pages : 44
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Book Description
Author: Andrew Young
Publisher: CSIRO PUBLISHING
ISBN: 0643102574
Category : Technology & Engineering
Languages : en
Pages : 367
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Book Description
Forest management must be sustainable not only in ecological, economic and social, but also genetic terms. Many forest managers are advocating and developing management strategies that give priority to conserving genetic diversity within production systems, or that recognise the importance of genetic considerations in achieving sustainable management. Forest Conservation Genetics draws together much previously uncollected information relevant to managing and conserving forests. The content emphasises the importance of conserving genetic diversity in achieving sustainable management. Each chapter is written by a leading expert and has been peer reviewed. Readers without a background in genetics will find the logical sequence of topics allows easy understanding of the principles involved and how those principles may impact on day-to-day forest planning and management decisions. The book is primarily aimed at undergraduate students of biology, ecology, forestry, and graduate students of forest genetics, resource management policy and/or conservation biology. It will prove useful for those teaching courses in these fields and as such help to increase the awareness of genetic factors in conservation and sustainable management, in both temperate and tropical regions.
![Joint Proceedings [of] Second Genetics Workshop of the Society of American Foresters and the Seventh Lake States Forest Tree Improvement Conference, October 21-23, 1965 PDF](https://books.google.com/books/content/images/frontcover/VH_9PDCasosC?fife=w80-h100)
Author:
Publisher:
ISBN:
Category : Forest genetics
Languages : en
Pages : 116
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Book Description
