SciELO - Scientific Electronic Library Online

vol.19 número3Phythossociologic along a riparian forest at rio da Prata, Jardim, Mato Grosso do Sul State, BrazilFlora and structure of the tree and shrub vegetation of the caatinga at Seridó, Rio Grande do Norte State, Brazil índice de autoresíndice de materiabúsqueda de artículos
Home Pagelista alfabética de revistas  

Servicios Personalizados




Links relacionados


Acta Botanica Brasilica

versión impresa ISSN 0102-3306versión On-line ISSN 1677-941X


RAMOS, Flavio Nunes; MATOS, Dalva M. Silva  y  SANTOS, Flavio A.M.. Spatial distribution of seeds and juveniles of Enterolobium glaziovii Bentham (Leguminosae, Mimosoideae) in the Atlantic forest, Brazil. Acta Bot. Bras. [online]. 2005, vol.19, n.3, pp.609-614. ISSN 0102-3306.

The spatial distribution of fruits and juveniles of Enterolobium glaziovii Bentham were evaluated in four circular plots of 30 m radius, centered around reproductive individuals to determine whether the size of the parental crowns, topography, and canopy coverage influence these patterns. Each crown was subdivided into eight irregular triangles and the area of each was calculated. Each plot was subdivided into four sub-plots, two of them in an up-slope direction, and the other two in a down-slope direction. The canopy coverage for each plot was estimated at breast height (1.30 m) and at ground level, every three months during 1998. The numbers of fruits and juveniles of E. glaziovii were recorded. Although there were more fruit under the parental crown (F1,12 = 0.01; p = 0.92), there was no difference in the number of juveniles under and beyond the reproductive trees (F1,12 = 0.88; p = 0.36). There was a positive correlation between the areas of the crowns and the numbers of fruits and juveniles under them (r = 0.62; df = 14; p < 0.05). Most of the fruits and juveniles were found in the down-slope directions. The canopy coverage was lower in spring, but higher under parental crowns (only at breast height). These results indicate that the parental crown, topography and canopy coverage influenced the pattern of spatial distribution and probably also the dynamics of E. glaziovii seeds and juveniles.

Palabras clave : conspecific influence; crown size; seed shadow; topography.

        · resumen en Portugués     · texto en Inglés     · Inglés ( pdf epdf )


Creative Commons License Todo el contenido de esta revista, excepto dónde está identificado, está bajo una Licencia Creative Commons