首页|THE SOIL SEED BANKAS AN INDICATOR OF ALTITUDINAL GRADIENT IN A MONTANE TROPICAL FOREST

THE SOIL SEED BANKAS AN INDICATOR OF ALTITUDINAL GRADIENT IN A MONTANE TROPICAL FOREST

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  • NSTL
  • Forest Research Inst Malaysia
The study was conducted in a portion of tropical montane forest in the Caparao National Park, Brazil. The aim of this work was to assess the changes in seed bank composition, density and richness along an altitudinal gradient and across seasons, and to analyse the floristic links between the forest soil seed bank, seed rain, regeneration layer and adult tree layer. The seed bank data were collected in the dry and rainy seasons at seven different elevations, ranging from 1112 - 1550 m above sea level. The floristic relationships were analysed through the species lists derived from previous studies at these same locations. The results showed seed density and species richness varied among different elevations, but did not vary with gradient. Seed bank density and richness varied significantly across seasons, with the highest averages found in the rainy season. In the floristic composition, the higher elevations showed more similar composition than to the lower elevations. Seed bank composition was floristically different from the seed rain, the regeneration layer and the adult tree layer of the forest. Our results showed that the soil seed bank was influenced by both altitude and environmental seasonality. The findings highlighted the importance soil seed bank as a mechanism of post-disturbance forest regeneration.

seed stockecological successionelevationseasonalitytropical forest

Abreu, V. S.、Dias, H. M.、Kunz, S. H.、van den Berg, E.、Garbin, M. L.

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Univ Fed Lavras, Dept Forest Sci, BR-37200900 Lavras, MG, Brazil

Univ Fed Espirito Santo, Ctr Agr Sci & Engn, Dept Forest & Wood Sci, BR-29550000 Jeronimo Monteiro, ES, Brazil

Univ Fed Lavras, Dept Ecol & Conservat, BR-37200900 Lavras, MG, Brazil

Univ Fed Espirito Santo, Dept Biol, Ctr Exact Nat & Hlth Sci, BR-29500000 Alegre, Epirito Santo, Brazil

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2021

10.26525/jtfs2021.33.4.473

Journal of Tropical Forest Science

Journal of Tropical Forest Science

EISCI
ISSN：0128-1283
年,卷(期)：2021.33(4)
  • 41