Data/hora: 24/06/2024 19:13:49

Biblioteca(s): 	Embrapa Cerrados.	
Data corrente: 	14/10/1997	
Data da última atualização: 	14/10/1997	
Autoria: 	SOLBRIG, O. T.	
Título: 	Summary and conclusions.	
Ano de publicação: 	1996	
Fonte/Imprenta: 	In: SOLBRIG, O.T.; MEDINA, E.; SILVA, J.F., ed. Biodiversity and savanna ecosystem processes; a global perspective. Heidelberg: Springer Verlag, 1996.	
Páginas: 	p.219-224.	
Idioma: 	Inglês	
Conteúdo: 	We now try to answer the question we posed in the introduction: does biodiversity affect the functioning of tropical savannas. The answer is affirmative. Biodiversity affects the functioning of savannas trough its affect on productivity (Chap. 2,10) nutrient cycling (Chap. 3,10), water economy (Chap 4,10), soil properties (Chap 2,3,10) and possibly through its effect on long-term ecoystem resilience (Chapters 5,9,12). Yet the near-term negative effects (costs) of converting savannas into pastures or agricultural fields are not very high and the benefits (income) obtained in increased productivity of those commodities that humans require or desire are usually sufficiently high that they outweigh the negative effects. The social and economic forces operating today are such that the conversion of tropical savannas into pastures or agricultural fields is likely to continue. The degree of change and the forces accounting for these changes vary from continent to continent (Young and Solbrig 1993). In India, savanna transformation is already very advanced; in Africa, the encroachment on savanna lands comes primarily from a population displaced by a more technological, capital-intensive, labor-saving agriculture in the better lands, and from overall demographic pressures in a continent with the highest growth rate in the world; in the Americas the llanos and especially the cerrados are increasingly being transformed for soybean...	
Palavras-Chave: 	Ciclagem; Cycling; Productivity; Savana.	
Thesagro: 	Biodiversidade; Cerrado; Ecossistema; Nutriente; Produtividade; Recurso Hídrico; Solo.	
Thesaurus Nal: 	biodiversity; ecosystems; nutrients; savannas; soil; water resources.	
Categoria do assunto: 	--	
Registro original: 	Embrapa Cerrados (CPAC)	
Exemplares: 	CPAC - (10047-1) - ADD - PL - -- - CRI4407 -  - CRI4407 - DIS