Título:	Padrões fitogeográficos da vegetação arbustivo-arbórea em áreas de Cerrado Típico e Cerrado Rupestre no estado de Tocantins
Autor(es):	Lemos, Helena Lara
Orientador(es):	Pinto, José Roberto Rodrigues
Assunto:	Cerrados - flora Savanas Vegetação Fatores ambientais
Data de publicação:	7-Mar-2018
Data de defesa:	15-Ago-2017
Referência:	LEMOS, Helena Lara. Padrões fitogeográficos da vegetação arbustivo-arbórea em áreas de Cerrado Típico e Cerrado Rupestre no estado de Tocantins. 2017. 68 f., il. Tese (Doutorado em Botânica)—Universidade de Brasília, Brasília, 2017.
Abstract:	The differentiation of plant communities in relation to species composition, abundance of the species and the vertical and horizontal structure are shaped by environmental factors in different scales. Uncovering these patterns and the factors that regulate has been the subject of several studies, however, these are scarce in areas with deep (Typical Cerrado-T) and shallow soil and rocky outcrops (Rupestrian Cerrado -R), especially in the North-Central portion of the Cerrado. Here, we describes and compared the Typical Cerrado and the Rupestrian Cerrado in north-central Cerrado in relation to richness, diversity, flora and vegetation structure of woody-shrub in 10 communities distributed in pairs in the State of Tocantins. We also investigated solved the distribution patterns of plants and populations and identified the relationship of these patterns with the environmental and spatial factors on regional scale. We found that there was no trend toward greater diversity Alpha to none of the environments, despite the rock environment be more rich in species than the environment on deep soil. The environments also showed similar structure (density and basal area) and proportion of dispersal syndromes, for both species composition and abundance of species. This indicates that the substrate does not act as a limiting factor for the establishment of species and development of individuals, in T and R. Both environments are formed by species of Cerrado, but in the rocky environment there are more species shared between Cerrado and Caatinga, while as the environment on deep soil there are more species shared between Cerrado and Amazon. We also found greater dissimilarity in the flora of the north-central portion of the Cerrado than what it has been appointed to the south and central parts of biome. This dissimilarity reflected in distinct patterns for composition and abundance of species. The differences in the patterns were strongly influenced by the environment, and the climate had important weight on the distribution of the composition and abundance of species, overlapping the edaphic factors. The synergy between space and environment show the complementarity of niche stochastic process and in the modulation of savanna communities in north-central Cerrado, regardless of the type of substrate.
Unidade Acadêmica:	Instituto de Ciências Biológicas (IB) Departamento de Botânica (IB BOT)
Informações adicionais:	Tese (doutorado)—Universidade de Brasília, Instituto de Ciências Biológicas, Departamento de Botânica, Programa de Pós-Graduação em Botânica, 2017.
Programa de pós-graduação:	Programa de Pós-Graduação em Botânica
Licença:	A concessão da licença deste item refere-se ao termo de autorização impresso assinado pelo autor com as seguintes condições: Na qualidade de titular dos direitos de autor da publicação, autorizo a Universidade de Brasília e o IBICT a disponibilizar por meio dos sites www.bce.unb.br, www.ibict.br, http://hercules.vtls.com/cgi-bin/ndltd/chameleon?lng=pt&skin=ndltd sem ressarcimento dos direitos autorais, de acordo com a Lei nº 9610/98, o texto integral da obra disponibilizada, conforme permissões assinaladas, para fins de leitura, impressão e/ou download, a título de divulgação da produção científica brasileira, a partir desta data.
DOI:	http://dx.doi.org/10.26512/2017.08.T.31358
Aparece nas coleções:	Teses, dissertações e produtos pós-doutorado

Os itens no repositório estão protegidos por copyright, com todos os direitos reservados, salvo quando é indicado o contrário.