Growing Periandra mediterranea on post-mining substrate : native Fabaceae with potential for revegetation of degraded rupestrian grasslands in Brazil.
Nenhuma Miniatura disponível
Data
2018
Título da Revista
ISSN da Revista
Título de Volume
Editor
Resumo
Recovery of degraded areas of rupestrian grasslands is hampered mainly by the limited knowledge regarding substrate
management and the biology of native species suitable for revegetation of these areas. Th e aim of our study was to
examine the establishment and growth of Periandra mediterranea in diff erent textures of lateritic substrate from
a mining-degraded area. Th e growth of P. mediterranea was evaluated using fi ne and coarse laterite, both with and
without the addition of topsoil. Survival, dry biomass, content of chemical elements and nodulation were evaluated
in ten individuals per treatment sixteen months after planting. Although the substrate has low nutrient content,
yet high metal concentrations, all plants survived. Plants growing on coarse laterite had 140 % greater biomass than
those growing on fi ne laterite. Th e addition of topsoil increased biomass in coarse and fi ne laterite by 46 and 151 %,
respectively, and doubled the number of nodulated plants, regardless of grain size. Th e biomass accumulation of P.
mediterranea to a dystrophic substrate revealed its potential for use in the revegetation of degraded areas of rupestrian
grasslands. Furthermore, the addition of topsoil facilitated the association of P. mediterranea with nitrogen-fi xing
bacteria, and increased its growth and capacity to improve substrate fertility.
Descrição
Palavras-chave
Bauxite, Recovery of degraded areas, Leguminosae, Canga
Citação
FIGUEIREDO, M. A. et al. Growing Periandra mediterranea on post-mining substrate : native Fabaceae with potential for revegetation of degraded rupestrian grasslands in Brazil. Acta Botanica brasilica, v. 32, p. 232-239, 2018. Disponível em: <http://www.scielo.br/scielo.php?pid=S0102-33062018000200232&script=sci_abstract>. Acesso em: 02 abr. 2018.