Effect of topsoil stockpiling on the viability of seed bank in field phytophysiognomies campos de altitude

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Railma Pereira Moraes Warley Augusto Caldas Carvalho José Aldo Alves Pereira Gleisson Oliveira Nascimento Dalmo Arantes Barros

Abstract

The viability of propagules during topsoil stockpiling is a limiting factor in
ecological restoration projects and little is known about the species distributed in the
campos de altitude. This work was carried out to investigate the viability of propagules
present in the topsoil under campos de altitude vegetation, stockpiled for up to 12
months after the stripping of areas to be mined. In the south of Minas Gerais, Brazil,
between November 2011 and November 2012, four collections of the seed bank were
carried out, considering three depths (0 to 10, 90 to 100, and 190 to 200 cm) of the plot
of stockpiled topsoil. Using the multivariate analysis, it was verified that the depth factor
does not statistically affect the abundance of emerged individuals, while the factor time
of stockpiling negatively affects the viability of the seeds. Some species were affected by
the stockpiling conditions, only emerging in some collections, while others (Achyrocline
satureioides, Ageratum fastigiatum, Baccharis dracunculifolia, Borreria capitata, Echinolaena
inflexa and Melinis minutiflora) had individuals emerged in all collection periods. This study
points out the need for the return of the topsoil until the fourth month of stocking, under
the risk of monodominance, with a prevalence of species more adapted to predominant
conditions of campos de altitude.

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How to Cite
MORAES, Railma Pereira et al. Effect of topsoil stockpiling on the viability of seed bank in field phytophysiognomies campos de altitude. CERNE, [S.l.], v. 23, n. 3, p. 339-348, sep. 2017. ISSN 2317-6342. Available at: <http://cerne.ufla.br/site/index.php/CERNE/article/view/1513>. Date accessed: 23 oct. 2017.
Keywords
seed longevity, seed bank viability, degraded areas, mining, herbaceous species
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