Seed rain in a seasonal semideciduous forest at Vicosa, Minas Gerais State, Brazil

被引:22
作者
de Campos, Erica Pereira [1 ]
Vieira, Milene Faria [2 ]
da Silva, Alexandre Francisco [2 ]
Martins, Sebastiao Venancio [3 ]
da Silva Carmo, Flavia Maria [4 ]
Moura, Vitor Moreira
de Saboya Ribeiro, Acaua Santos
机构
[1] Univ Fed Ouro Preto, Dept Ciencias Biol, BR-35400000 Ouro Preto, MG, Brazil
[2] Univ Fed Vicosa, Dept Biol Vegetal, BR-36570000 Vicosa, MG, Brazil
[3] Univ Fed Vicosa, Dept Engn Florestal, BR-36570000 Vicosa, MG, Brazil
[4] Univ Fed Vicosa, Dept Biol Geral, Setor Ecol, BR-36570000 Vicosa, MG, Brazil
关键词
Atlantic forest; diaspores; dispersal; forest ecology; REGENERATION; RECRUITMENT; DYNAMICS; DENSITY;
D O I
10.1590/S0102-33062009000200017
中图分类号
Q94 [植物学];
学科分类号
071001 ;
摘要
(Seed rain in a seasonal semideciduous forest at Vicosa, Minas Gerais State, Brazil). This study aims to evaluate the floristic composition, density and frequency of seeds in 25 traps in a section of seasonal semideciduous forest, as well as classify taxons as to life form, dispersal syndromes, and succession phase of the tree species, and verify floristic similarities between seed rain species and tree species located in the same plots. The work was carried Out from December/2004 to November/2006. Forty three taxons were recognized and Leguminosae was represented by I I species. The dominant life form was arboreal (63.1%), climbers were represented by 28.9% of the sampled species, herbs by 5.3% and shrubs by 2.6%. Mean seed density in the first year was 113.92 seeds.m-2 and 2603.84 seeds.m(-2) in the second year. These differences showed spatial and seasonal heterogeneity of the seed rain. Floristic similarity using Sorensen's index between seed-rain species and tree species from the studied fragment was 32%, a value considered to be low (<= 50%). This result showed that the adjacent arboreal vegetation composition had little influence oil the seed rain.
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页码:451 / 458
页数:8
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