Resumo

EASDALE, M.H. et al. Una herramienta para monitorear sequías en regiones áridas y semiáridas de Patagonia Norte. RIA. Rev. investig. agropecu. [online]. 2012, vol.38, n.2, pp.158-164. ISSN 1669-2314.

Environmental variability is a constant feature in arid and semiarid rangeland regions, being drought one of the main problems in extensive livestock production, with productive and economic impacts both at farm and regional scales. Regional monitoring of drought processes is a key and necessary tool, as a complement for active adaptive proposals and management, aimed at mitigation on production impacts. In this article, we propose a tool for drought monitoring in arid and semiarid areas, based on remote sensing data. The aim was to develop a monitoring system based on a spectral index, disaggregating regional biophysical heterogeneity into homogeneous units, by linking them to key decision moments associated with traditional livestock management in sheep farming systems from Northern Patagonia. Such integration allows bringing this tool closer to regional decision making, basically for local institutions and organizations, and give support with information for policy design and development related to adaptive livestock management. Finally, we discuss the scope of this tool and future challenges, regarding the development of early warning and drought mitigation systems in arid and semiarid regions.

Palavras-chave : Early warning; Mitigation; Patagonia; Remote sensing; Sheep production; Vulnerability.

        · resumo em Espanhol     · texto em Espanhol     · Espanhol ( pdf )