Data/hora: 01/06/2024 15:19:37

Biblioteca(s): | Embrapa Agrossilvipastoril.
Data corrente: | 05/02/2014
Data da última atualização: | 05/02/2014
Autoria: | CAVA, M.; ISERNHAGEN, I.; GUERIN, N.; DURIGAN, G.
Afiliação: | INGO ISERNHAGEN, CPAMT.
Título: | Large-scale ecological restoration of the Cerrado in Amazon region, Brazil
Ano de publicação: | 2013
Fonte/Imprenta: | In: WORLD CONFERENCE ON ECOLOGICAL RESTORATION, 5., 2013, Madison. Book of Abstratcts... Madison, USA: Society for Ecological Restoration, 2013.
Idioma: | Português

Conteúdo:

One of the most important obstacles in large-scale ecological restoration relies on the high costs of current practices of planting nursery raised tree 
seedlings. Finding less expensive and ecologically viable restoration has been a challenge for scientists. We compared three techniques aiming at Cerrado 
restoration in the Amazon region, Brazil: passive restoration (T1 ? abandonment) and mechanized direct seeding of native trees and legume species in 
rows (T2), or broadcast (T3) (four replications each, 0.24 ha per plot). The experimental area was deforested by the 1980s and used mainly as pasture 
for about 25 years, and a native forest fragment remains close to the study site. Density and richness of the woody plant community (from 50 cm in 
height) has been used as indicators of restoration efficacy. At 12 months after planting, a total of 1,004 individuals of 61 species were recorded in the 
survey plots (a total of 720 m²). Among these species, 14 had been seeded and the other 47 entered the community by natural regeneration processes 
(resprouting or by seed rain). Neither the plant density (F = 0.53; df = 2; P > 0.05) nor the species richness (F = 2.1; df = 2; P > 0.05) differed 
among the three techniques. Considering that passive restoration has no costs and its efficacy does not differ from the direct seeding, we concluded that 
abandonment is the best solution to recover the highly resilient Cerrado vegetation under environmental conditions similar to the experimental area.

Thesaurus Nal: | ecological restoration.
Categoria do assunto: | --
Registro original: | Embrapa Agrossilvipastoril (CPAMT)
Exemplares: | CPAMT - (205-1) - UPC - PC - DD -  -  -  - DIS