02560nab a2200361 a 4500 AR-ReUNN 20260715065652.0 260630s1999 uk |||||||||||||||||eng eng Bucher, Enrique H. 65058 Huszar, P. C. 133634 Sustainable management of the gran Chaco of South América : ecological promise and economic constraints / E. H. Bucher ; P. C. Huszar London Academic Press 1999 10 páginas Material de Recursos Electrónico. Disponible en: http://www.sciencedirect.com/science?_ob=ArticleURL&_udi=B6WJ7-45FKNVD-9&_user=1677679&_rdoc=1&_fmt=&_orig=search&_sort=d&view=c&_acct=C000054197&_version=1&_urlVersion=0&_userid=1677679&md5=540250663bba9c2a443f779f1e714de6 Abstract: The vast plain known as the Gran Chaco is a natural region of more than 1·3 million square kilometres, the second largest natural biome in South America, with only the Amazon region being larger. It extends over parts of Argentina, Bolivia, Paraguay and, marginally, Brazil. The original landscape of the region was mostly a park land with patches of hardwoods intermingled with grasslands. Increasing human encroachment, largely by poor campesinos, with associated overgrazing, excessive timber harvesting, charcoal production and over-exploitation of wildlife, is transforming the region into a dense and unproductive shrub land and is contributing to increasing rural poverty. A management system for the sustainable use of the Chaco has been developed based on a multiple-species ranching system that includes beef, timber, charcoal and wildlife production. An evaluation of the management system finds that it is capable of protecting and enhancing the resource base, while providing higher economic returns in a sustainable manner. However, high initial costs, as well as a divergence between the «best»interests of campesinos and society, jeopardize the feasibility of the managed system. Ecología 4910 Desarrollo Sostenible 5403 Economía 4397 Chaco 4349 Argentina 4258 Producción 4624 Multiples 133635 Especies 9279 Viabilidad 128586 Viability 133636 Supervivencia 60744 Journal of Environmental Management n. 57 (1999) 218473 ART (AGROP)79733 224978 224978 224978 AR-ReUNN spa AR-ReUNN aacr2