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Soil seed bank in a subtropical grassland under different grazing intensities Acta Botanica
Silva,Graziela Har Minervini; Overbeck,Gerhard Ernst.
ABSTRACT Grazing is an important determinant for the composition and structure of grasslands; however, soil seed bank (SSB) response to grazing intensity is poorly investigated. We analyzed SSB richness and density in a subtropical grassland in southern Brazil with different forage offers (low, intermediate, high and very high), that is, contrasting grazing intensities. The SSB was evaluated by the seedling emergence method. We collected ten SSB samples at two layers (0-5 and 5-10 cm) in spring and autumn in each of grazing intensity treatments. We surveyed the established vegetation to assess its similarity with the SSB. Treatment effects were analyzed by Poisson regression while compositional differences were visualized by ordination. We found 103...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Disturbance; Grassland management; Pampa; Plant community dynamics; Recovery potential; Resilience; Transient seed bank.
Ano: 2020 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062020000200360
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