978 resultados para Ecologia das comunidades
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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
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Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
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Pós-graduação em Microbiologia Agropecuária - FCAV
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Pós-graduação em Ciências Biológicas (Botânica) - IBB
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Pós-graduação em Geografia - IGCE
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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
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Corrección: Por error en la presente edición, faltó incluir el siguiente párrafo:"Este proyecto ha contado desde su inicio con la colaboración de la Autoridad Portuaria de Barcelona, en el marco de un Acuerdo de Cooperación Tecnológica entre el Puerto de Buenos Aires y la A.P.B, quien ya cuenta con una Plataforma y un grupo de trabajo, Forum Telemático (www.apb.es). Esta experiencia de la A.P.B fue recogida en el Puerto de Buenos Aires, constituyéndose un equipo de trabajo mixto con especialistas de Buenos Aires y Barcelona, para trabajar en forma conjunta con el aporte y el apoyo del Grupo COLOBA, más todo el resto de la comunidad portuaria. Se desarrolló el Plan Maestro para la Plataforma de e-Commerce del Puerto de Buenos Aires. El mismo presenta un enfoque metodológico integrado para la implementación de una plataforma que brinde este tipo de servicios en Buenos Aires. El esfuerzo conjunto y mancomunado de todos los participantes del proyecto permitió la finalización del Plan Maestro en el período previsto, alcanzando un pleno éxito en el logro de los objetivos planteados.
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Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
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Pós-graduação em Agronomia (Produção Vegetal) - FCAV
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Food webs have been used in order to understand the trophic relationship among organisms within an ecosystem, however the extension by which sampling efficiency could affect food web responses remain poorly understood. Still, there is a lack of long-term sampling data for many insect groups, mainly related to the interactions between herbivores and their host plants. In the first chapter, I describe a source food web based on the Senegalia tenuifolia plant by identifying the associated insect species and the interactions among them and with this host plant. Furthermore, I check for the data robustness from each trophic level and propose a cost-efficiently methodology. The results from this chapter show that the collected dataset and the methodology presented are a good tool for sample most insect richness of a source food web. In total the food web comprises 27 species belonging to four trophic levels. In the second chapter, I demonstrate the temporal variation in the species richness and abundance from each trophic level, as well as the relationship among distinct trophic levels. Moreover, I investigate the diversity patterns of the second and third trophic level by assessing the contribution of alfa and beta-diversity components along the years. This chapter shows that in our system the parasitoid abundance is regulated by the herbivore abundances. Besides, the species richness and abundances of the trophic levels vary temporally. It also shows that alfa-diversity was the diversity component that most contribute to the herbivore species diversity (2nd trophic level), while the contribution of alfa- and beta-diversity changed along the years for parasitoid diversity (3rd level). Overall, this dissertation describes a source food web and bring insights into some food web challenges related to the sampling effort to gather enough species from all trophic levels. It also discuss the relation among communities associated with distinct trophic levels and their temporal variation and diversity patterns. Finally, this dissertation contributes for the world food web database and in understanding the interactions among its trophic levels and each trophic level pattern along time and space
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Pós-graduação em Serviço Social - FCHS
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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
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Pós-graduação em Ciências Biológicas (Botânica) - IBB
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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)