Fábio de Almeida Vieira

Riqueza e similaridade florística de oito remanescentes florestais no norte de Minas Gerais, Brasil

n The objective of this study was to characterize and compare the floristic composition of eight fragments of Calcareous Dry Forest and Arboreal Caatinga in the north of Minas Gerais State, Brazil. The survey of the tree species was performed by periodic visits to the fragments. We found 114 tree species belonging to 40 botanical families in the eight fragments. Of a total of 89 species found in the Calcareous Dry Forest fragments, 37 (42%) were typical of this formation. On the other hand, from the 75 species sampled in the Arboreal Caatinga remnants, 25 species (33%) occurred only in these fragments. The cluster analysis suggested that the floristic composition of the fragments was affected by the phytophysiognomy and by local bioecological conditions. The observed relationship between remnant area and tree species richness suggests that area was a good indicator of species richness in the forest fragments. The results of this study indicate that both historical (phytophysiognomy) and ecological (e.g., remnant area and occurrence of human disturbance) factors constitute important elements that determine the composition and richness of tree species of forest fragments in the north of Minas Gerais State.

Genetic structure of an insect-pollinated and bird-dispersed tropical tree in vegetation fragments and corridors: implications for conservation

In the vegetation corridors that connect small remnants of undisturbed primary forest in the Lavras landscape (Brazil), Protium spruceanum is a representative of a mass-flowering insect-pollinated and bird-dispersed tree. Allozyme variation was quantified from five forest remnants (Nxa0=xa0150) from secondary vegetation corridors linking them (Nxa0=xa080) to generate information for genetic conservation. The species adhered to H-W equilibrium in all fragments in most of the loci. The results indicated high gene diversity in the fragments

Using Random Amplified Polymorphic DNA to Assess Genetic Diversity and Structure of Natural Calophyllum brasiliense (Clusiaceae) Populations in Riparian Forests

({hat{H}}_{rm e}=0.381{-}0.507)

BIOMETRIA DE FRUTOS E ENDOCARPOS DE MURICI (Byrsonima verbascifolia Rich. ex A. Juss.)

and corridors

Florística e estrutura de uma Floresta Estacional Decidual, no parque municipal da Sapucaia, Montes Claros (MG)

({hat{H}}_{rm e}=0.336{-}0.470),

ESTRUTURA E FLORÍSTICA DE UM REMANESCENTE FLORESTAL NA FAZENDA RIBEIRÃO, MUNICÍPIO DE JUVENÍLIA, MG, BRASIL

positively correlated with the plant density (rxa0=xa00.742, R2xa0=xa00.551, d.f.xa0=xa04). We did not find evidence of inbreeding within fragments