Influência da topografia e da abertura do dossel na estrutura do componente herbáceo arbustivo em duas áreas florestais com diferentes idades na planície de inundação do alto rio Paraná.

• Ano de defesa: 2011
• Autor(a) principal: Cruz, Marcos Paulo da
• Tipo de documento: Tese
• Tipo de acesso: Acesso aberto
• Idioma: por
• Instituição de defesa: Universidade Estadual de Maringá; Brasil; Programa de Pós-Graduação em Ecologia de Ambientes Aquáticos Continentais; UEM; Maringá; Departamento de Biologia
• Palavras-chave em Português: Florestas tropicais; Sucessão ecológica; Florestas tropicais secundárias; Extrato herbáceo arbustivo; Formas de vida; Regeneração; Sucessão secundária; Planície de inundação; Alto rio Paraná; Brasil.; Secondary forest; Life forms; Regeneration; Secondary succession; Brazil.; Ciências Biológicas; Ecologia
• Link de acesso: http://repositorio.uem.br:8080/jspui/handle/1/4837

Lately the primary tropical forests have experienced a fast devastation, while the secondary forests have enlarged significantly throughout the years. Due to the importance that this kind of forest has taken regarding the plans of restoration and conservation, a wider understanding of its organization and functioning, considering the different forms of life, has been necessary. Aiming at comparing the composition and structure of the herb-shrub compound between two forest areas with different ages of recovering, as well as the relative influence of the topography and canopy opening about the organization of the community, vegetation and environmental data were collected in 24 contiguous plots in each sample area. In the analytical procedure correlograms I by Morgan and partial Mantel tests were used in order to check the correlation between community data and environmental variables. In order to check differences between the sample areas, t tests by Student were applied. Among the vegetation compounds, only the lianas proved to be spatially structured, in both environments, with a similar standard observed to average. In RFID the average was positively correlated with the trees and with the total richness, and negatively with herbs. In fifty-seven-year-old FLT, a significant correlation was observed only between herbs and maximum gap and between average and total richness. By comparing the two areas, significant average differences were not obtained only to the shrub compound and to canopy opening. In general, the structure of the herb-shrub extract has been associated with topographic characteristics, which suggests a strong influence of the flooding regime on the shown area, whereas the canopy opening seems not to exert evident influence on the same.