Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 178
Get Book Here
Book Description
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 176
Get Book Here
Book Description
Author: James D. Ackerman
Publisher:
ISBN: 9780893275129
Category : Orchids
Languages : en
Pages : 0
Get Book Here
Book Description
The Greater Antilles constitute the oldest, largest, and most complex islands of the West Indies. Here, in one of the world's biodiversity hotspots, we find 109 genera of orchids comprising 594 species; roughly 70% of those species are endemic to the region. In Orchid Flora of the Greater Antilles, world-renowned orchidologist James D. Ackerman and his collaborators provide clear, detailed accounts of each orchid species found in the Greater Antilles. The taxonomic treatments include: complete synonymy with types; description; relevant taxonomic literature (genus treatments); vernacular names; taxonomic discussion; notes on distribution, ecology, and conservation status (species treatments); high-quality scientific illustrations (species treatments). English and Spanish versions are given for the key to genera, keys to the species under each genus, and the glossary of orchid-related technical terms. This treatment reflects many of the recent changes in generic circumscriptions brought about by molecular systematics. In an appendix, the author provides a phylogenetic classification of the orchid genera of the Greater Antilles.--Publisher's description.
Author: Horst Kretzschmar
Publisher:
ISBN:
Category : Anacamptis
Languages : en
Pages : 552
Get Book Here
Book Description
Author: Art Borkent
Publisher: Pensoft Publishers
ISBN: 9546423017
Category : Ceratopogonidae
Languages : en
Pages : 200
Get Book Here
Book Description
Author: K.G. Mukerji
Publisher: Springer Science & Business Media
ISBN: 1461542650
Category : Science
Languages : en
Pages : 339
Get Book Here
Book Description
`The fundamental problem the world faces today, is the rapidly increasing pressure of population on the limited resources of the land. To meet the ever increasing demands of expanding populations, agricultural production has been raised through the abundant use of inorganic fertilizers, the adoption of multicropping systems and liberal application of chemical pesticides (fungicides, bactericides, etc. ). Though the use of chemicals has increased the yield dramatically, it has also resulted in the rapid deterioration of land and water resources apart from wastage of scarce resources. This has adversely affected the biological balance and lead to the presence of toxic residues in food, soil and water in addition to imposing economic constraints on developing countries.' (From the Preface) Mycorrhizal Biology addresses the global problem of land degradation and the associated loss of soil productivity and decline in soil quality caused by exploitative farming practices and poor management in developing countries, and the far reaching socio-economic and ecological consequences of its impact on agricultural productivity and the environment. In the light of a need for sustainable development, a new system of productive agriculture, to ensure the efficient management of agricultural inputs for long term high crop productivity with minimum damage to the ecological and socio-economic environment is essential. The management of mycorrhizal fungi will form a significant part of such a system and this work investigates the key association of plant roots with mycorrhizal fungi, known to benefit plants under conditions of nutritional and water stress and pathogen challenge and analyses the developments in our understanding of the genetic loci that govern mycorrhiza formation.
Author: Carlyle A. Luer
Publisher:
ISBN: 9781930723290
Category :
Languages : en
Pages :
Get Book Here
Book Description
Author: Maarten Kappelle
Publisher: University of Chicago Press
ISBN: 022627893X
Category : History
Languages : en
Pages : 798
Get Book Here
Book Description
In 1502, Christopher Columbus named Costa Rica, and while gold and silver never materialized to justify the moniker of rich coast in purely economic terms, scientists and ecotravelers alike have long appreciated its incredible wealth. Wealth in Costa Rica is best measured by its biodiversityhome to a dizzying number of plants and animals, many endemic, it s a country that has long encouraged and welcomed researchers from the world over, and is exemplary in the creation and commitment to indigenous conservation and management programs. Costa Rica is considered to have the best preserved natural resources in Latin America. Approximately nine percent (about 1,000,000 acres) of Costa Rica has been protected in 15 national parks, and a comparable amount of land is protected as wildlife refuges, forest reserves or Indian reservations. This long-awaited synthesis of Costa Rican ecosystems is an authoritative presentation of the paleoecology, biogeography, structure, conservation, and sustainable use of Costa Rica s ecosystems. It systematically covers the entire range of Costa Rica s natural and managed, terrestrial, freshwater and marine ecosystems, including its island systems (Cocos Islands), the Atlantic and Pacific oceans and shores (coasts, coral reefs, mangrove forests), its lowlands (dry, season and wet forests), its highlands (the northern volcanoes and southern Talamanca s), and its estuaries, rivers, lakes, swamps and bogs. The volume s integrated, comprehensive format will be welcomed by tropical and temperate biologists alike, by biogeographers, plant and animal ecologists, marine biologists, conservation biologists, foresters, policy-makers and all scientists, natural history specialists and all with an interest in Costa Rica s ecosystems."
Author: Robert L. Dressler
Publisher: Cambridge University Press
ISBN: 9780521450584
Category : Gardening
Languages : en
Pages : 342
Get Book Here
Book Description
A valuable contribution to the on-going discussions on evolution within the Orchid family. Dressler's work delimits several major natural groups and emphasises areas needing further study.
Author: S. Porembski
Publisher: Springer Science & Business Media
ISBN: 3642597734
Category : Science
Languages : en
Pages : 543
Get Book Here
Book Description
Inselbergs are isolated rock outcrops that stand out abruptly from surrounding plains. Despite the widespread occurrence of granite inselbergs throughout all climatic and vegetational zones, their remarkably rich plant life was largely neglected in the recent literature. This richly and partly in color illustrated volume provides a detailed survey of all major abiotic and biotic features characteristic for inselbergs. The extreme environmental conditions on inselbergs are described in depth as well as specific adaptive traits of rock outcrop plants including their morphological, anatomical and physiological responses. The diversity and structure of inselberg plant communities are examined on a global scale with detailed regional accounts for different tropical and temperate zones.