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Acta Botanica Brasilica

Print version ISSN 0102-3306On-line version ISSN 1677-941X

Abstract

SANTOS, Karin dos  and  KINOSHITA, Luiza Sumiko. Floristic composition of the woody flora of the Ribeirão Cachoeira forest, Campinas, São Paulo State. Acta Bot. Bras. [online]. 2003, vol.17, n.3, pp.325-341. ISSN 1677-941X.  https://doi.org/10.1590/S0102-33062003000300001.

An inventory of the woody flora (trees and shrubs), was carried out in the Ribeirão Cachoeria forest (233.7ha, 650m high, 46°55'58''W, 22°50'13''S), the second largest and best conserved fragment of semideciduous tropical forest in the municipality of Campinas, São Paulo state, Southeastern Brazil. The soil is a red-yellow podsol and the climate is of Köppen's Cwag type. Collections were made from August/1996 to September/1997. Only fertile individuals with a perimeter at breast height of 9cm or greater were included in the survey. One hyndred and seventhy five species were identified, belonging to 119 genera and 49 families. The most important families were Myrtaceae (14 species), Rutaceae and Fabaceae (13), Caesalpiniaceae (11), Solanaceae (9), and Rubiaceae (8). Some species were found for the first time in the region: Tachigali multijuga Benth. and Schoepfia brasiliensis A.DC. The flowering peak for most species was from August to October. Maximum fruit production was from August to November. Most species are zoochoric (58%), but 23% were anemochoric and 19% autochoric. The floristic composition of this forest and another 20 forests from São Paulo state were compared. The results obtained indicate the existence of distinct groups of forests. The most homogeneus group contains forests from the municipality of Campinas with similarity of 40%. This suggests that these forests are possibly fragments of a original continuous forest in the Campinas region.

Keywords : floristics semideciduous forest.

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