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metadata.dc.type: Artigo de Periódico
Title: Species richness and distribution of bryophytes within different phytophysiognomies in the Chapada Diamantina region of Brazil
Other Titles: Acta Botanica Brasilica
Authors: Valente, Emilia de Brito
Pôrto, Kátia Cavalcanti
Bastos, Cid José Passos
metadata.dc.creator: Valente, Emilia de Brito
Pôrto, Kátia Cavalcanti
Bastos, Cid José Passos
Abstract: The Chapada Diamantina ecoregion is within the caatinga (shrublands) biome of Brazil. Environmental factors determine the phytophysiognomies that distinguish the ecoregion from the surrounding areas. This study aimed to investigate the distribution of bryophyte flora in this ecoregion, by phytophysiognomy and elevational zone. Analyzing specimens we collected from five municipalities in the region, together with specimens (previously collected from the region) in herbaria, we identified 400 taxa. The phytophysiognomies that presented the highest species richness and the greatest numbers of exclusive taxa were forests and campos rupestres (dry, rocky grasslands), which respectively accounted for 51% and 40% of the taxa, compared with only 5% and 4%, respectively, for the caatinga and cerrado (savanna). Species richness and the numbers of exclusive taxa were highest in the lower and upper montane zones. There was a predominance of neotropical taxa and a significant number of disjunct species found in Brazil and in the Andes region. We conclude that the Chapada Diamantina region is an important center of bryophyte diversity, harboring not only a great number of species overall but also a considerable number of species exclusive to the region, primarily in forests and campos rupestres at elevations above 800 m.
Keywords: Mosses
Campos rupestres
Elevational zonation Brasil
metadata.dc.rights: Acesso Aberto
Issue Date: 2013
Appears in Collections:Artigo Publicado em Periódico (Biologia)

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