Use este identificador para citar ou linkar para este item: http://repositorio.inpa.gov.br/handle/123/3656
Título: Notas sobre a composição arbóreo-arbustiva de uma fisionomia das savanas de Roraima, Amazônia Brasileira
Autor(es): Reinaldo Imbrozio Barbosa
Sebastião Pereira do Nascimento
Paulo Atlântico Figueiredo de Amorim
Rosemberg Ferreira da Silva
Assunto: Savanas
Cerrados
Biodiversidade
ISSN: 0102-3306
Revista: Acta Botanica Brasílica
Volume: 19
Resumo: A floristic inventory of woody species was carried out in one of the vegetation units that compose the savannas landscape of the Roraima State, northernmost of Brazilian Amazonia. This unit is characterized by dense colonization of nests of termites Cornitermes ovatus Emerson. Twenty nine woody species were observed (15 botany families) in three localities used for sampling. The total of species varied from 12 to 20 by locality. The most abundant species were Byrsonima verbascifolia (L.) DC. and Mimosa microcephala Humb. & Bonpl. ex Willd. (dwarf shrubs), Byrsonima cf. intermedia A. Juss. and Randia formosa (Jack.) K. Schum. (shrubby) and, Byrsonima crassifolia (L.) H.B.K. and Curatella americana L. (arboreal). Eight species are common to all localities. Diversity measured by the Index of Shannon (H') was low for all the areas sampled (<0.90) indicating high specimens concentration in few species. The Index of Sørensen indicated similarities (± 0.60) among studied areas, suggesting a group of landscapes with common plant diversity, representing a same vegetation unit.
URI: http://repositorio.inpa.gov.br/handle/123/3656
ISSN: 0102-3306
DOI: https://dx.doi.org/10.1590/s0102-33062005000200015
Aparece nas coleções:Coordenação de Dinâmica Ambiental (CDAM)

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