Vol 13 Num 4




Vascular flora of Serra da Pedra Branca, Caldas, Minas Gerais and floristic relationships with altitude areas of Southeastern Region of Brazil

Munike Gonçalves de Rezende

Universidade Federal de Juiz de Fora
Mestre pelo programa de pós-graduação em Ecologia
email: munikebio@gmail.com

Ricardo Cunha Loyola Elias

Universidade Federal de Juiz de Fora
estre pelo programa de pós-graduação em Ecologia
Fátima Regina Gonçalves Salimena

Universidade Federal de Juiz de Fora
Departamento de Botânica, ICB, Campus Universitário s/nº, bairro Martelos, CEP 36036-330, Juiz de Fora, Minas Gerais, Brasil
Luiz Menini Neto

Universidade Federal de Juiz de Fora
Departamento de Botânica, ICB, Campus Universitário s/nº, bairro Martelos, CEP 36036-330, Juiz de Fora, Minas Gerais, Brasil

keywords
Atlantic Forest; "campo de altitude"; "Serra da Mantiqueira"; Similairy analysis; Southern of Minas Gerais

publication date: 10-09-2013





Abstract
Serra da Pedra Branca (SPB) is a mountain range located in the Southwestern portion of the state Minas Gerais, in the municipality of Caldas (21°58'-21°55'S, 46°24'-46°22'W). It is a striking feature in the landscape, between 1100 and 1780 m.s.m., in a region that is part of the Atlantic Forest Domain and is considered as a priority area for conservation of the flora in Minas Gerais state. The vegetation is composed by a mosaic of "campo de altitude" (which occupy the greatest extension in the area), Seasonal Semidecidual Montane Forest, Dense Ombrophilous High-Montane Forest and Mixed Ombrophilous Forest. The aims of this study was the elaboration of a floristic survey of SPB added to the specimens collected by Anders Fredrik Regnell in the nineteenth century in Caldas and to analyze its floristic similarity with altitude areas of the Southeastern Region of Brazil. There were recorded 502 vascular plant species, distributed in 274 genera and 100 families. The majority of recorded species present herbaceous habit, terricolous, saxicolous and/or rupicolous (representing around 58% of recorded species), predominantly occurring in the "campo de altitude" (ca. 46%). The richest families were Polypodiaceae (20 spp.) and Dryopteridaceae (10 spp.) among the ferns, and Orchidaceae (56 spp.), Asteraceae (27 spp.) and Fabaceae (26 spp.) among the angiosperms. Just one species of gymnosperm was recorded, Araucaria  angustifolia  (Bertol.) Kuntze (Araucariaceae). Five new records were made for the Minas Gerais flora, 13 species are cited as threatened with extinction in the state and at least six are endemic to SPB. Amongst 127 species collected in XIX century in the region, only 29 collected again, while 375 new records were made for SPB. The analysis of floristic similarity performed between the flora of SPB and other altitude areas of Southeastern Region revealed isolation of SPB in relation to other areas, highlighting its floristic peculiarity, which can probably be explained by its location in a distinct hydrographic basin. The vegetation of the SPB must be considered as endangered since the presence of endemic species and/or threatened species, associated with local environmental conditions suffering accelerated rate of destruction, highlight the need for urgent actions to preserve local biodiversity.

how to quote this paper
Rezende, M. G.; Elias, R. C. L.; Salimena, F. R. G. and Menini Neto, L. Vascular flora of Serra da Pedra Branca, Caldas, Minas Gerais and floristic relationships with altitude areas of Southeastern Region of Brazil. Biota Neotrop.  Oct/Dec 2013 vol. 13, no. 4 http://www.biotaneotropica.org.br/v13n4/en/abstract?inventory+bn00513042013 ISSN 1676-0603.

Cited species
check for this species in other resources Araucaria  angustifolia 



Fundação de Amparo | Pesquisa do Estado de São Paulo, Fapesp
Conselho Nacional de Desenvolvimento Científico e Tecnológico, CNPq
© BIOTA NEOTROPICA, 2013