Diversidad florística en los pastizales de las quebradas de Arhuaycancha y Rurec, Perú

Abstract

The objetive of the study was to determine the floristic diversity in the grasslands of the Arhuaycancha and Rurec streams. The step transection method was used. In the Río Negro sub-basin, 70 species belonging to 19 families were found. Poaceae (31.43%) wasthe most abundant, followed by Asteraceae (20%), Juncaceae (7.14%), Cyperaceae (5.71%), Fabaceae (5.71), Gentianaceae (4.29%), Rosaceae (2.86%), Apiaceae (2.86%), Iridaceae (2.86%), Plantaginaceae (2.86%), Poligonaceae (2.86%), and others in a smaller percentage. In the Arhuaycancha stream, two dominant species were found: Distichia sp. (0.51%) and Calamagrostis spiciformis (0.43%),whileinthe Rurec stream, Agrostis breviculmis(0.29%) and Distichia sp.(0.28%) weredetermined as dominant species. The biomass production of the Arhuaycancha and Rurec was 9 608.7 kg/ha/MS and 9 999.2 kg/ha/MS respectively. Ecological processes improve with rest and are affectedwith continuous grazing. It is recommended to carry out rotational grazing and to recover thegrasslands that are in the process of degradation.