Ecological Transition Zone
Mostrando 1-6 de 6 artigos, teses e dissertações.
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1. Resposta do clima amazônico ao desmatamento progressivo da Amazônia e do Cerrado / Response of the Amazonian climate to progressive deforestation of the Amazon and Cerrado
There is a clear shift happening in the physical environment of the Amazon forest, where human intervention has intensified dramatically during the last half of the twentieth century. Recent studies suggest that changes in regional climate caused by local deforestation have the potential to cause parts of the Amazon to cross an ecological tipping point: a cr
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 14/02/2012
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2. Assessment of the ecological functionality of anthropogenically created habitats in the impoundment of the hydropower plant Freudenau (Vienna, Austria) with bi- and multivariate statistical analyses
The construction of the hydropower plant Freudenau was accompanied by the introduction of new structures and habitats. This study processes and evaluates the ecological fish data for the periods 1999/2000 and 2003/2004. The area was subdivided into five sections and 19 habitats (stream kilometer 1914.50 to 1994.60). Bi- and multivariate analyses were inducte
Zoologia (Curitiba). Publicado em: 2010-02
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3. Padrões de diversidade da vegetação lenhosa da região do Alto Camaquã, Rio Grande do Sul, Brasil
A diversidade beta pode ser definida como a mudança na composição de espécies entre locais em uma determinada área geográfica. Quantificar a contribuição relativa dos diferentes fatores que a afetam é essencial para entender como é mantida a diversidade das comunidades. Nosso estudo tem foco na vegetação lenhosa da região do Alto Camaquã, sul d
Publicado em: 2010
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4. Identificação de Madeiras de clones de Eucalyptus grandis, Eucalyptus urophylla e do híbrido Eucalyptus urograndis por RMN 13C. / Wood Identification of clones of Eucalyptus grandis, Eucalyptus urophylla and of the hybrid Eucalyptus urograndis by 13C NMR .
The Eucalyptus genus is represented for trees that have high growth rate, plasticity, straight way of stem growth, natural pruning and wood with the technological properties suitable for a diverse use. In function of ecological society pressure and the larger distance between the forest and the consumer center, the native woods have been substituted by eucal
Publicado em: 2008
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5. Expected time for random genetic drift of a population between stable phenotypic states.
Natural selection and random genetic drift are modeled by using diffusion equations for the mean phenotype of a quantitative (polygenic) character in a finite population with two available adaptive zones or ecological niches. When there is appreciable selection, the population is likely to spend a very long time drifting around the peak in its original adapt
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6. Characterization of cry Genes in a Mexican Bacillus thuringiensis Strain Collection
Mexico is located in a transition zone between the Nearctic and Neotropical biogeographical regions and contains a rich and unique biodiversity. A total of 496 Bacillus thuringiensis strains were isolated from 503 soil samples collected from the five macroregions of the country. The characterization of the strain collection provided useful information on the
American Society for Microbiology.