Avaliação fenológica e biogeográfica de espécies fitoindicadoras do gênero Clitoria L. em ambientes tropicais

• Ano de defesa: 2014
• Autor(a) principal: Reis, Vinícius Silva
• Orientador(a): Souza, Rosemeri Melo e
• Tipo de documento: Dissertação
• Tipo de acesso: Acesso aberto
• Idioma: por
• Programa de Pós-Graduação: Pós-Graduação em Desenvolvimento e Meio Ambiente
• Palavras-chave em Português: Mudanças climáticas - Sergipe; Fenologia; Ecologia; Ecossistemas - Sergipe; Modelagem de Nicho; Clitoria
• Palavras-chave em Inglês: Biotic communities; Climatic changes; Ecology; Phenology; Sergipe (Brazil)
• Área do conhecimento CNPq: CNPQ::OUTROS
• Link de acesso: https://ri.ufs.br/handle/riufs/4288

The climate is a highly dynamic system and has a great influence on human activities and biodiversity. One of the guiding principles of this research is the "change" as a natural aspect of climatic components, since the Earth throughout its history has experienced moments of heating and cooling. The second guiding principle of this work is grounded in the tradition of using plant species as indicators of the environment they grow. The overall objective is to evaluate the occurrence of climate change in tropical environments by phenological and biogeographic characteristics of fitoindicator species of the genus Clitoria L. occurring in the state of Sergipe, namely: Clitoria fairchildiana Howard , C. guianensis Aubl (Benth ) and C . laurifolia Poir . As specific objectives, phenological and climatic factors of C. fairchildiana were monitored in different environments and ecological niche modeling were applied to the three mentioned species. The areas of collecting phenological and climate data were the Refugio de Vida Silvestre Mata do Junco , the Área de Proteção Ambiental Morro do Urubu and the Parque dos Cajueiros. Given the statistical analysis of correlation and difference applied to phenological and climatic data, it was found that there was no significant differences between temperature and rainfall in the areas of occurrence of C. fairchildiana and this species has the phenophases of flowering, leaf emergence and fall directed mainly by climatic factors, and the fruiting phenophase of the same guided by other factors not identified in this study. A significant difference between fruiting events in analyzed populations of C. fairchildiana has been identified, although not derived from the difference between climatic factors. By modeling the distribution of the three species of Clitoria L. from Sergipe, it was possible to verify that since the last glacial maximum, given the climatic changes in the macroscale, the species have undergone a process of loss of habitat suitable to their survival, with the formation of dispersal corridors with connections between the Atlantic Forest and Amazon, occurring an increase in processes of disjunction of distribution and loss of area due to the application of future scenarios for the end of the century. Clitoria laurifolia was the species that most lost area. It is necessary to develop researches based on the integrated analysis of the effects of climate change on biomes from functional and distributive processes, providing greater accuracy in predictions, an improvement of evaluation processes and providing more reliable information for decision taking in the context of biodiversity conservation.