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Effects of Habitat, Cattle Grazing and Selective Logging on Seedling Survival and Growth in Dry Forests of Central Brazil
Authors:Daniel L. M. Vieira  Aldicir Scariot  Karen D. Holl
Affiliation:Pós-Graduação em Ecologia, Universidade de Brasília, Caixa Postal 04457, 70919-970, Brasília, DF, Brazil;
Laboratório de Ecologia e Conservação, Embrapa –Recursos Genéticos e Biotecnologia, Caixa Postal 02372, 70770-900, Brasília, DF, Brazil;
and Environmental Studies Department, University of California, Santa Cruz, California 95064, U.S.A.
Abstract:We studied the effect of forest gaps and cattle grazing on survival and growth of seedlings of seven native tree species, planted in dry forest fragments with different intensities of past logging in Central Brazil. Seedling survival after 12 mo ranged from 35 to 77 percent among species. Survival of most species was similar in gaps and understory in minimally disturbed forest remnants, but was lower in the gaps of more heavily logged forests. In contrast, growth was much higher in gaps than in understory in minimally disturbed forests, but for most species was similar in gaps and understory in more heavily logged forests. We did not detect an effect of cattle on seedling survival. Seedlings of the most commonly logged species show a high potential to survive and grow when planted in logged forests.
Keywords:Astronium fraxinifolium    Cavanillesia arborea    Cerrado    Enterolobium contortisiliquum    Eugenia dysenterica    field experiments    Myracrodruon urundeuva    Schinopsis brasiliensis    Tabebuia impetiginosa    tropical deciduous forests
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