Download or read book La V g tation Ligneuse Du Sahel written by Souleymane Ganaba and published by Omniscriptum. This book was released on 2011 with total page 324 pages. Available in PDF, EPUB and Kindle. Book excerpt: Pour contribuer la protection des ressources ligneuses menac es au Sahel, des inventaires de la flore et de la v g tation ligneuse de parcelles de suivi de la v g tation et de l'impact des techniques C.E.S d'am nagement des terres d grad es, des diagnostics par MARP, des enqu tes semi structur es et des entretiens avec des personnes ressources sur les utilisations des plantes et leur gestion ont t men s. Les principaux r sultats indiquent que la v g tation ligneuse est en d gradation et la biodiversit en r gression. Les esp ces sah lo-sahariennes augmentent sans pouvoir combler le d ficit li la r gression des esp ces soudaniennes.Par ailleurs, le d ficit hydrique est l'origine de la mortalit ligneuse. Les techniques C.E.S d'am nagement permettent une r g n ration ligneuse, mais ne comblent pas la perte de la biodiversit . Les performances et les lacunes des techniques d'am nagement de r cup ration des terres d grad es par les projets de d veloppement sont identifi es. Enfin, les r gles internes de gestion des ressources naturelles constituent un cadre de gouvernance locale des ressources naturelles et des pr mices la gouvernance d centralis e de ces ressources.
Download or read book The Intangible Elements of Culture in Ethnoarchaeological Research written by Stefano Biagetti and published by Springer. This book was released on 2016-06-02 with total page 332 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume focuses on the intangible elements of human cultures, whose relevance in the study of archaeology has often been claimed but rarely practiced. In this book, the authors successfully show how the adoption of ethnoarchaeological perspectives on non-material aspects of cultures can support the development of methodologies aimed at refining the archaeological interpretation of ancient items, technologies, rituals, settlements and even landscape. The volume includes a series of new approaches that can foster the dialogue between archaeology and anthropology in the domain of the intangible knowledge of rural and urban communities. The role of ethnoarchaeology in the study of the intangible heritage is so far largely underexplored, and there is a considerable lack of ethnoarchaeological studies explicitly focused on the less tangible evidence of present and past societies. Fresh case studies will revitalize the theoretical debate around ethnoarchaeology and its applicability in the archaeological and heritage research in the new millennium. Over the past decade, ‘intangible’ has become a key word in anthropological research and in heritage management. Archaeological theories and methods regarding the explorations of the meaning and the significance of artifacts, resources, and settlement patterns are increasingly focusing on non-material evidence. Due to its peculiar characteristics, ethnoarchaeology can effectively foster the development of the study of the intangible cultural heritage of living societies, and highlight its relevance to the study of those of the past.
Download or read book Biological Invasions in Europe and the Mediterranean Basin written by F. di Castri and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 458 pages. Available in PDF, EPUB and Kindle. Book excerpt: In view of the massive change in the area of distribution of many world biota across classical biogeographical realms, and of the drastic restructuring of the biotic components of numerous ecosystems, the Scientific Committee on Problems of the Environment (SCOPE) decided at its general Assembly in Ottawa, Canada, in 1982 to launch a project on the 'Ecology of Biological Invasions'. Several regional meetings were subsequently organized within the framework of SCOPE, in order to single out the peculiarities of the invasions that took place in each region, the behaviour of their invasive species and the invasibility of their ecosystems. Most noteworthy among such workshops were one in Australia in August 1984, one concerning North America and Hawaii in October 1984, and one dealing with southern Africa in November 1985. A leitmotiv of these workshops was that most of the invasive species to those regions were emanating from Europe and the Mediterranean Basin, inadvertently or intentionally introduced by man. It was therefore considered as a timely endeavour to organize the next regional meeting in relation to this region. The workshop on 'Biological Invasions in Europe and the Mediterranean Basin' was held in Montpellier, France, 21 to 23 May 1986, thanks to the financial support of SCOPE and of the A.W. Mellon Foundation, and the logistic facilities of the Centre National de la Recherche Scientifique (C.N .R.S.).
Download or read book Management of Agroforestry Systems for Enhancing Resource Use Efficiency and Crop Productivity written by Joint FAO/IAEA Division of Nuclear Techniques in Food and Agriculture and published by . This book was released on 2008 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Soil and water management is the key to sustainable crop production and food security. This book contains contributions from participants of an IAEA coordinated research program on the use of nuclear techniques for developing integrated nutrient and water management practices for agroforestry systems.
Download or read book The Complementarity of Feed Resources for Animal Production in Africa written by John E. S. Stares and published by ILRI (aka ILCA and ILRAD). This book was released on 1992-01-01 with total page 436 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Mathematical Models for Biological Pattern Formation written by Philip K. Maini and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 327 pages. Available in PDF, EPUB and Kindle. Book excerpt: This 121st IMA volume, entitled MATHEMATICAL MODELS FOR BIOLOGICAL PATTERN FORMATION is the first of a new series called FRONTIERS IN APPLICATION OF MATHEMATICS. The FRONTIERS volumes are motivated by IMA pro grams and workshops, but are specially planned and written to provide an entree to and assessment of exciting new areas for the application of mathematical tools and analysis. The emphasis in FRONTIERS volumes is on surveys, exposition and outlook, to attract more mathematicians and other scientists to the study of these areas and to focus efforts on the most important issues, rather than papers on the most recent research results aimed at an audience of specialists. The present volume of peer-reviewed papers grew out of the 1998-99 IMA program on "Mathematics in Biology," in particular the Fall 1998 em phasis on "Theoretical Problems in Developmental Biology and Immunol ogy." During that period there were two workshops on Pattern Formation and Morphogenesis, organized by Professors Murray, Maini and Othmer. James Murray was one of the principal organizers for the entire year pro gram. I am very grateful to James Murray for providing an introduction, and to Philip Maini and Hans Othmer for their excellent work in planning and preparing this first FRONTIERS volume. I also take this opportunity to thank the National Science Foundation, whose financial support of the IMA made the Mathematics in Biology pro gram possible.
Download or read book Conservation de la For t Dense en Afrique Centrale Et de L Ouest written by Kevin M. Cleaver and published by World Bank Publications. This book was released on 1992 with total page 372 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume brings together selected papers presented and discussed at the Conference on Conservation of West and Central African Rainforests, held in Abidjan, November 5-9, 1990.
Download or read book Terminology for Grazing Lands and Grazing Animals written by Forage and Grassland Terminology Committee and published by . This book was released on 1991 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt: Two years in the making, this book represents the combined effort of scientists in Australia, New Zealand, and the United States and of some 16 organizations and agencies including the American Forage and Grassland Council. It has been adopted by these 16 and numerous other organizations world-wide as the definitive standard for word usage in the science.
Download or read book Faidherbia Albida in the West African Semi arid Tropics written by R. J. (Ed.) VANDENBELDT and published by . This book was released on 1992 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Herbage Intake Handbook written by John David Leaver and published by . This book was released on 1982 with total page 160 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Forage Evaluation written by J. L. Wheeler and published by . This book was released on 1981 with total page 604 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Wood Anatomy of Sapindales written by Manisha Agarwal and published by . This book was released on 2008 with total page 190 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Flora of Tropical East Africa written by and published by . This book was released on 1954 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Identification of Living Gymnosperms on the Basis of Xylotomy written by Pál Greguss and published by . This book was released on 1955 with total page 736 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book CSIRO Atlas of Hardwoods written by Jugoslav Ilic and published by . This book was released on 1991 with total page 540 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Timber Trees of Suriname written by Chequita R. Bhikhi and published by University of Washington Press. This book was released on 2016 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This guide focuses on the identification of Surinamese trees, based on field, vegetative, floristic, and wood characteristics. It includes botanical descriptions, wood descriptions, illustrations and photos of one hundred Surinamese commercial timber tree species, potential timber tree species, and tree species protected by Surinamese forest law. It is the first book for Suriname with more than four hundred photos to illustrate the characteristics of each tree species for easy identification in the field. The guide is intended for anyone interested in learning and identifying Surinamese timber trees, particularly for the Surinamese forest organizations and different timber companies in Suriname. While this guide focuses on Suriname, many of these species can be found in the adjacent countries of Guyana and French Guiana as well, or have a neotropical distribution, allowing the book to be applicable across the entire region.
Download or read book Tropical Timbers of the World written by Martin Chudnoff and published by . This book was released on 1980 with total page 829 pages. Available in PDF, EPUB and Kindle. Book excerpt: Over the past two decades U.S. lumber imports from the tropics have increased fourfold. Plywood trade, mostly from Asian sources, has soared forty-fold and now equals our domestic production. Log imports, though, have decreased drastically from about 100 million board feet (log scale) in the 1950's to 30 million currently. Much of the world timber trade now is in the form of processed material. Many more tropical wood species and species groupings are being made available to U.S. processors. Most of these have been well known for many years on the European markets. This interest in supplemental supplies from overseas is in both softwoods and hardwoods. An extensive foreign literature has described the properties and uses of tropical woods, but much of it is no longer readily available. In this country the U.S. Forest Products Laboratory, over the years, issued 'Information Leaflets' or 'Foreign Wood Series' reports on some species of importance. But many of these are now out of print. The most recent comprehensive document, 'Properties of Imported Tropical Woods, ' contained a description of about 100 tropical genera.
