Fitossociologia de duas fitocenoses de floresta ombrófila aberta no município de Codó, Estado do Maranh?o

摘要

The study was carried out in the area of the Magela Project(04o35'20"S and 43o49'55,2"W) owned by MARGUSA Enterprise (Maranh?o Gusa S/A), located in the Municipality of Codó, State of Maranh?o. The forest cover belongs to the Open Ombrophylous Forest with lianas(OOFliana) and to the Open Ombrophylous Forest with palms(OOFpalm). The objective was to analyze the floristic composition and horizontal structure of the OOFliana and OOFpalm. In 50x200m plots, all individuals with DBH>15 cm (inclusion level I) were measured, and in 5x50m subplots, individuals with5cm< DBH<15cm (inclusion level II) were included. The OOFpalm formation showed the highest floristic diversity. Species with higher ecological importance in OOFliana were: Cenostigma macrophyllum Tul. (Leguminosae), Galipea jasminiflora (A. St.-Hil.) Engl. (Rutaceae) e Hymenaea parvifolia Huber (Leguminosae). In OOFpalms, the most important species were: Attalea speciosa Mart. Ex Spreng. (Arecaceae), Actinostemon klotzshii (Didr.) Pax (Euphorbiaceae) e Cenostigma macrophyllum.