Estudo fenológico de algumas espécies campestres do bioma pampa no município de São Gabriel

Abstract

The Pampa Biome is present in Brazil only in the southern of Rio Grande do Sul state, and presents a particular biodiversity ecosystem, but mainly through agriculture and forestry, is being seriously degraded The approachofthe phenological analysis are of extreme value, helping toknowledge of the biological processes that involve the plants of a determined ecosystem. The objective of this research was to analyze the different phenological phases and to identify in which period the flowering, fruiting and seed dispersal of the 38 field species found in this study, in the Pampa Biome, in municipality of São Gabriel, Rio Grande do Sul, Brazil. The methodology used was biweekly observations of reproductive phenomena, using the adapted ―método do caminhamento‖, during the period of one year.Among the families found the most are in number of species: Fabaceae, Apiaceae, Cyperaceae and Rubiaceae. The results indicate that of the species studied, the majority presented reproductive phases in spring, summer and autumn, with decrease during July, which can be explained by climatic factors.