Diversidade em quatro áreas de campos rupestres na Chapada Diamantina, Bahia, Brasil: espécies distintas, mas riquezas similares

ABSTRACT This study aims at detecting patterns of diversity on 'campos rupestres', providing useful information to conservation strategies. Four sites in the Chapada Diamantina´s summits were studied, including two kinds of open physiognomies, one more grassy and homogenous (continuous habitat) and the other more shrubby and heterogeneous (insular habitat). The vegetation in each one of the four sites was sampled by four simple random 10 × 10 m units. Besides these 16 units, more 16 were stratified to the insular habitat, four in each site. The number of species, families, vascular cryptogam...