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- Title
Efeito da profundidade, estacionalidade e luminosidade no banco de sementes do solo de campo rupestre.
- Authors
de Jesus Veloso, Cristina Pereira; Gomes Figueiredo, João Carlos; Mesquita Mota, Nayara; Rodrigues da Luz, Giovana; Pinheiro de Azevedo, Islaine Franciely; Wilson Fernandes, Geraldo; Ferreira Nunes, Yule Roberta
- Abstract
The floristic composition of the rupestrian grasslands comprises a mosaic of species with different adaptations exhibiting high diversity and endemism. However, the plant species from rupestrian grasslands are dependent on site-specific conditions and their reproduction is almost always limited, making natural regeneration after disturbances difficult. The soil seed bank represents a potential factor for the regeneration of this environment. The objective was to evaluate the soil seed bank of different depths of a rupestrian grassland area, collected in two climatic seasons and submitted to different light conditions. The samples composed of litter and soil (0-5 cm) were collected in 13 plots of 100 m2, in a rupestrian grassland area in Serra do Cipó (Minas Gerais state), in dry and rainy seasons. The samples were subjected to full sun and shading conditions. In total, 185 seedlings of 31 species and nine botanical families emerged. The richest families were Cyperaceae, Poaceae and Asteraceae. There was variation in richness, abundance and floristic composition among the soil strata, but no variation was observed in relation to seasonality and light conditions. The soil samples presented higher values of the evaluated parameters in relation to those ones of litter, showing that the seed bank is more representative in the soil stratum. These results demonstrate that there is potential for rupestrian grassland regenerations through the seed bank, especially the soil stratum.
- Subjects
MINAS Gerais (Brazil); SOIL seed banks; GRASSLAND soils; PLANT species; SOIL composition; SOIL sampling; GRASSLANDS; PLANT species diversity
- Publication
Ciência Florestal (01039954), 2022, Vol 32, Issue 2, p880
- ISSN
0103-9954
- Publication type
Article
- DOI
10.5902/1980509863100