The research was carried out at the Centro de Assessoria e Apoio aos Trabalhadores e Instituições Não-Governamentais, Alternativas (CAATINGA) in the Ouricuri county, state of Pernambuco, Brazil, in the period of 1989-1994, with the objective of comparing different practices of woody vegetation manipulation, as alternatives of sustainable pastoral management of caatinga and determining their viability to the small producers. Plots measuring 25 x 100 m had the woody vegetation submitted to the following experimental treatments: deforestation, thinning, thinning-lowering, lowering and control. The results indicated that the total availability and compartimentalization of the aerial phytomass of caatinga (woody species foliage and herbaceous vegetation) were affected by the manipulation methods of the trees and shrubs, and by the annual variations of the rainfall. The vegetation treatments substantially increased the participation of the grass species on the floristic composition of the herbaceous phytomass. The lowering and the thinning-lowering of the woody vegetation are the recommended methods for the pastoral management of caatinga to the sites similar to that of this research.
trees; deforestation; management; thinning-lowering; understory
