The effect of woodland manipulation on forage phytomass was studied in a Caatinga of Petrolina, PE, Brazil. There were five treatments: 1) Control of native vegetation; 2) Thinning 1/3 of shrub canopy cover; 3) Thining 2/3 of shrub cover; 4) Caatinga slashing; and 5) Treatment 4 + burning. Slashing and burning were carried out in September/84, and ...
Resumo: O experimento foi conduzido na Fazenda Crioula, no Centro Nacional de Pesquisa de Caprinos - CNPC - EMBRAPA, em Sobral, Ceará, com o objetivo de avaliar os efeitos do pastoreio alternado ovino - caprino sobre os parâmetros fitossociológicos do estrato herbáceo de uma caatinga raleada, submetida a diferentes cargas animais e ao longo de vári...
In this paper we introduce a new thinning algorithm, called MB, which is optimized with respect to the total number of elementary Boolean operators needed to perform it. We first emphasize the sound foundations of the algorithm, which is built by expressing into the Boolean language the three following constraints: (1) homotopy, (2) median axis and...