ABSTRACT
Gaps of temporal fitofisionoms were defined on lowland tropical systems localized in the Biologic Reserve of Poço das Antas RJ - Brazil. The litter-fall was quantificated by each fifteen days and was determinated the nutrient concentration of foliar fraction each two months. The oldest forest had the major litter-fall, 6.9 1 1.1 ton ha-1 year-1 total as the other fractions, when compared with the intermediate age forest with 5.5 1 0.5 ton ha-1 year-1 total. The plantation had the lowest values, 3.0 1 0.7 ton ha-1 year-1 total. The foliar litter-fall concentration of N, P, K, Ca nutrients were bigger for Mimosa bimucronata (DC.) O. Kuntze crop, showing then the great ecosystems nutritional recomposition potential of this specie with foliar renovation strategy occurs under perenifolial rhythm, mostly in the rain season synchronized to the reproduction phase. The transference rate of the nutrients in the studied foliar fraction follows this concentration order: P < K< Mg < Ca < N < C.
Key words:
Litter-fall; tropical forest; Atlantic Forest; nutrients; Mimosa bimucronata