Resumo

CASTRO, Marina; CASTRO, José  e  SAL, António Gómez. Effect of Livestock Grazing on Combustibles Decreasing in Quercus pyrenaica Woodlands. Silva Lus. [online]. 2009, vol.17, n.2, pp.159-169. ISSN 0870-6352.

The herbaceous biomass was evaluated in Quercus pyrenaica woodlands in two seasons (Spring and Autumn) for three consecutive years (1999, 2000 and 2001), both in grazed and non-grazed areas. For this, we used the method of clipping and weighing, in 0.25 m side plots in both areas (10 and 9 quadrates of grazed and non-grazed land, respectively). This procedure was repeated in four black oak woodlands (Freixedelo, Sortes, Rebordainhos and Zido), all located in different environments and with different structures. The results show differences in the accumulated biomass among the various locations, seasons, years, and among the grazed and non-grazed plots. Evidence shows the positive interaction between the wood and animal components, an essential condition for the silvopastoral approach in the management of these systems.

Palavras-chave : Pastoralism; combustibles reduction; silvopastoral systems; Quercus pyrenaica.

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