Please use this identifier to cite or link to this item: http://www.alice.cnptia.embrapa.br/alice/handle/doc/998986
Title: Direct seeding of dry forest tree species in abandoned pastures: effects of grass canopy and seed burial on germination.
Authors: GUARINO, E. de S. G.
SCARIOT, A. O.
Affiliation: ERNESTINO DE SOUZA GOMES GUARINO, CPAF-AC; ALDICIR OSNI SCARIOT, CENARGEN.
Date Issued: 2014
Citation: Ecological Research, v. 29, n. 3, p. 473-482, May 2014.
Description: Natural tree regeneration in abandoned pastures can be hampered by various biotic and abiotic filters, including seed removal and predation. We tested the effects of maintenance and removal of grass and seed deposition (buried and unburied) on seed germination of 12 tree species in dry forest pastures. We obtained evidence supporting the hypothesis that seeds attain higher germination under a grass canopy than on bare ground. For most species, grass cover provides safety from seed predators and facilitates germination by providing a suitable microclimate with soil humidity similar to the forest. The hypothesis that buried seeds attain higher germination was not supported by our data. Predation and removal of unburied seeds ranged from 0 to 77 % and, alone or together, were the major causes of nongermination. Direct seeding is a promising technique for revegetation of recently abandoned pastures in areas originally covered by tropical dry forests. The high germination rate of seeds deposited on the ground and under grass reduces costs during initial restoration stages, potentially facilitating the spread and use of this technique.
Thesagro: Floresta
Regeneração natural
Pastagem
Semente
Poder germinativo
Cobertura do solo.
NAL Thesaurus: Dry forests
Land degradation
Pastures
Natural regeneration
Direct seeding
Seed germination.
Keywords: Floresta seca
Degradación de la tierra
Germinación de las semillas
Pastizales
Regeneración natural
Siembra directa.
Degradação do solo
Semeadura direta
Bosques secos
ISSN: 0912-3814 (impresso)/1440-1703 (online)
Language: en
DOI: 10.1007/s11284-014-1143-4
Type of Material: Artigo de periódico
Access: openAccess
Appears in Collections:Artigo em periódico indexado (CPAF-AC)

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