Seminario Internacional Sobre Produccion Agropecuaria Y Forestal en Zonas de Ladera de America Tropical PDF Download

Author:
Publisher: Bib. Orton IICA / CATIE
ISBN:
Category : Hill farming
Languages : es
Pages : 372

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Author:
Publisher:
ISBN:
Category : Rural development
Languages : en
Pages : 1186

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Author: Andrés R.. Novoa B.
Publisher:
ISBN:
Category :
Languages : es
Pages : 0

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Author: New York Public Library. Research Libraries
Publisher:
ISBN:
Category : Congresses and conventions
Languages : en
Pages : 542

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Vols. for 1975- include publications cataloged by the Research Libraries of the New York Public Library with additional entries from the Library of Congress MARC tapes.

Author: Benson Latin American Collection
Publisher:
ISBN:
Category : Catalogs, Union
Languages : en
Pages : 974

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Author:
Publisher:
ISBN:
Category : Agriculture
Languages : en
Pages : 864

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Author: George R. Proctor
Publisher: Royal Botanic Gardens Kew
ISBN: 9781842464038
Category : Science
Languages : en
Pages : 0

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The three islands comprising the Cayman Islands support 415 native taxa in a land area over 100 square miles, 29 of which are uniquely Caymanian. This field guide satisfies the needs of the professional botanist, while providing the non-expert and eco-tourist with an introduction to the unique endemic flora of the Cayman Islands.

Author: R. Bowen
Publisher: Springer Science & Business Media
ISBN: 9400911033
Category : Science
Languages : en
Pages : 495

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Since the Arab oil embargo of 1974, it has been clear that the days of almost limitless quantities of low-cost energy have passed. In addition, ever worsening pollution due to fossil fuel consumption, for instance oil and chemical spills, strip mining, sulphur emission and accumulation of solid wastes, has, among other things, led to an increase of as much as 10% in the carbon dioxide content of the atmosphere in this century. This has induced a warming trend through the 'greenhouse effect' which prevents infrared radiation from leaving it. Many people think the average planetary temperatures may rise by 4°C or so by 2050. This is probably true since Antarctic ice cores evidence indicates that, over the last 160000 years, ice ages coincided with reduced levels of carbon dioxide and warmer interglacial episodes with increased levels of the gas in the atmosphere. Consequently, such an elevation of temperature over such a relatively short span of time would have catastrophic results in terms of rising sea level and associated flooding of vast tracts of low-lying lands. Reducing the burning of fossil fuels makes sense on both economic and environmental grounds. One of the most attractive alternatives is geothermal resources, especially in developing countries, for instance in El Salvador where geothermal energy provides about a fifth of total installed electrical power already. In fact, by the middle 1980s, at least 121 geothermal power plants were operating worldwide, most being of the dry steam type.

Author: Marcus Salomon Krüger
Publisher:
ISBN:
Category : Botany
Languages : de
Pages : 480

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Author: Jean-Luc E. Cartron
Publisher:
ISBN:
Category : Birds
Languages : en
Pages : 76

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This report is the result of a cooperative effort by the Rocky Mountain Research Station and the USDA Forest Service Region 3, with participation by the Arizona Game and Fish Department and the Bureau of Land Management. It assesses the state of knowledge related to the conservation status of the cactus ferruginous pygmy-owl in Arizona. The population decline of this owl has been attributed to the loss of riparian areas before and after the turn of the 20th century. Currently, the cactus ferruginous pygmy-owl is chiefly found in southern Arizona in xeroriparian vegetation and wellstructured upland desertscrub. The primary threat to the remaining pygmy-owl population appears to be continued habitat loss due to residential development. Important information gaps exist and prevent a full understanding of the current population status of the owl and its conservation needs.