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Floristic composition and characterization of the conservation state of springs from the central east portion of the Itapicuru river watershed in the Bahia semiarid.

Abstract

Springs are fundamental for the hydrology of watersheds. Their monitoring and conservation are important, mainly in the semiarid, where the water supply is scarce. The objective of this study was to map springs from the semiarid region of Bahia, central east portion of the Itapicuru river watershed, and characterize their conservation state and occurrence species in the permanent preservation area. The study was carried out through field visits in the municipalities of Cipó, Nova Soure, and Tucano. All springs located in the Itapicuru river watershed were georeferenced, and all the existing individuals and species were identified and counted in the radius of 50 m. Also, the forms of using the soil were recorded and their degradation status was assessed as preserved, disturbed or degraded. All 14 springs located were punctual, and pasture was the main form of using there are no preserved springs. The most observed species was Poincianella pyramidalis (catingueira/native), followed by Mangifera indica (mangueira/exotic). The study identified high degree of springs degradation, attesting to the lack or inadequate springs management and alerting to the need of intervention of river basin management practices.