Orchidaceae das Serras Negra e do Funil, Rio Preto, Minas Gerais, e similaridade florística entre formações campestres e florestais do Brasil

Abstract

ABSTRACT(Orchidaceae from Serra Negra and Serra do Funil, Rio Preto, Minas Gerais, and fl oristic similarity between grassland and forest formations of Brazil). Th is study presents a survey of the Orchidaceae from Serra Negra and Serra do Funil (SN/SF), 'Zona da Mata' , Minas Gerais state, and analyzes the fl oristic similarity of this family among 29 grassland and forest sites in Brazil. Cluster analysis used the UPGMA algorithm, Sørensen coeffi cient, and bootstrap analyses with 5,000 replications. Th e cluster analyses revealed low similarity indices; exceptions are the clusters composed of Serra Negra + Ibitipoca State Park and Ilha do Cardoso State Park + Juréia-Itatins Ecological Station. Th e results suggest that SN/SF represents a fl oristic corridor between sites in Serra da Mantiqueira (Itatiaia National Park) and Serra do Mar (Macaé de Cima Biological Reserve). Groups of areas with similar environmental conditions were observed and the "campos rupestres" regions stood out because of their singular fl oristic composition. Th e Mantel test revealed that fl oristic similarity is not associated with geographic distance between the areas.

Floristic patterns of epiphytes in the Brazilian Atlantic Forest, a biodiversity hotspot

“…The Núcleo Curucutu (NC) appeared separated from other sites because it shares species with the two main groups (4 and 5). This was also found by Abreu, Menini Neto & Konno () on a study of Orchidaceae from caatinga, cerrado, Atlantic Forest and southern Brazilian campos (grasslands), where NC was positioned as a sister group to all Atlantic Forest areas. The NC protected area comprises a wide elevational range of DEF and therefore it appears to bring together the flora from both regions, where southern species dwell in the higher parts of the park.…”

Phytosociological and Environmental Analysis of a Rocky Outcrop Located in Caldas County, Minas Gerais State, Brazil.

“…The richest families found in this area are often cited as being the most representative in the predominantly rural areas of Minas Gerais (Giulietti et al 1997, Pirani et al 2003, Leoni & Tinte 2004, Alves & Kolbek 2009. Orchidaceae is the richest family in the Atlantic Forest, and it is often referred as the most representative in highlands or rupestrian fields, such as Serra do Brigadeiro State Park (PESB) (Leoni & Tinte 2004, Caiafa & Silva 2005, Ibitipoca Estadual Park (PEI) (Menini- Neto et al 2007) and Serra Negra (Abreu et al 2011).…”

Cactaceae na Serra Negra, Minas Gerais, Brasil

“…Em virtude de dados preliminares provenientes deste estudo, foi constatada a alta diversidade de espécies no local, sendo recomendada a investigação científica em forma de inventários para aumentar a base de conhecimento da região (Drummond et al 2005). Vários estudos realizados reforçam a importância florística da região (Menini Neto et al 2009;Abreu et al 2011;Feliciano & Salimena 2011;Matozinhos & Konno 2011;Valente et al 2011;Blaser et al 2012;Dutra et al 2012;Mezzonato-Pires et al 2013;. No entanto, a despeito da importância biológica reconhecida, existem apenas duas unidades de conservação, as Reservas Particulares do Patrimônio Natural no município de Rio Preto (RPPN São Lourenço do Funil) e no município de Lima Duarte (RPPN Serra Negra) (Menini Neto et al 2009), de modo que a maior parte da região encontra-se desprotegida, sofrendo com o turismo desordenado, coleta ilegal de plantas e utilização de suas áreas campestres como pastagens (obs.…”