Portal de Periódicos da CAPES

Caracterização edáfica de um ecótono savânico-florestal no sudeste brasileiro

2009; Fundación Zoobotánica de Rio Grande do Sul; Volume: 64; Issue: 2 Linguagem: Inglês

2446-8231

Marcelo Henrique Ongaro Pinheiro, Sayonara A. do Couto Moreno Arantes, Jairo Roberto Jiménez-Rueda, Reinaldo Monteiro,

Environmental and biological studies

This study was motivated by the scarcity of studies involving descriptions of edaphic horizons in the transition from savanna to forest. It aims at comparing the chemical features and the texture of savanna and forest soils in one ecotone, and at considering possible edaphic infl uences on vegetation. In areas pertaining to the Botanical Garden of Bauru, State of Sao Paulo, two-meter deep pits were opened in different parts of a seasonal semi-deciduous forest and of a forested savanna to directly collect soil samples in different horizons. The physicochemical analysis revealed high contents of different nutrients, e.g., Ca and Mg, and low contents of Al in the superfi cial horizons of the seasonal forest, which were classifi ed as eutrophic. Conversely, all the forested savanna horizons were considered as dystrophic. These edaphic features may be due to the different microenvironments of the studied phytocenoses.