999 resultados para Comunidades nativas


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Pós-graduação em Ciências Biológicas (Zoologia) - IBRC

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Pós-graduação em Ciências Biológicas (Zoologia) - IBRC

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O objetivo deste artigo é, ao localizar a ambiência do debate constitucional de 1787, nos Estados Unidos, fazê-lo de modo a retornar às conexões causais que modularam as experiências coloniais e a produção, a partir da independência, de uma estrutura de poder confederado que, se a princípio fora reconhecida como o arranjo político possível de viabilizar a união dos entes federados, no momento seguinte, torna-se alvo de um amplo movimento, entre um determinado segmento das elites, orientado para a alteração radical da lógica de poder aí inscrita, em que uma coleção de comunidades territoriais horizontalmente organizadas passaria a contar com um centro munido de poder de proposição.

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Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

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The drainage basin of Cascavel River is almost entirely within the urban perimeter of Guarapuava, Paraná State, Brazil. Seven stream segments were sampled in two seasons (summer and winter). We found 12 taxa of macroalgae with a dominance of Chlorophyta (seven taxa) followed by Cyanophyta (three taxa), Heterokontophyta and Rhodophyta (one taxon each). Richness, diversity, and evenness were higher during the winter while the abundance and dominance were higher in the summer. Among the microenvironmental characteristics, the current velocity was the only one that differed significantly between the periods. The regression analysis revealed that the richness of the substrate was responsible for the variation in richness, diversity, evenness, and dominance during the summer period. During the winter the current velocity was responsible for the variation of species diversity. A cluster analysis of macroalgal communities did not group points in the same temporal period. The Canonical Correspondence Analysis (CCA) showed that the segments were close to each other because of the occurrence of one or a few species in common. The patterns of spatial and temporal distribution of stream macroalgae seem to be strongly influenced by microhabitat characteristics at different scales.However, they aresupported by regional variables.

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Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

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Pós-graduação em Ciências Biológicas (Zoologia) - IBB

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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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Conselho Nacional de Desenvolvimento Cientifico e Tecnológico (CNPq)

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Foraminifera scientific studies became, historically, of your apply in relative dating of rocks, stratigraphic correlations and paleoenvironmental reconstruction. In the last decades, they have been applied on the studies of modern ecosystems, with or without antrhopic influence. Both aspects are interest of petroleum industry. Among other approaches, foraminífera are used as good indicators of the fluctuation of relative sea level. This study aimed to survey and taxonomic study of the community structure of foraminifera in surface samples of a core, 60 cm, collected in mangrove located in Itapanhaú river in Bertioga (SP).It also aims to contribute to the discussion about typical patterns of community structure of mangrove margins and provide elements for discussion on the relative sea level behavior in this area in almost modern times. It was been collected 6 samples along the core of 60 cm of length, each one 10 cm depth. They were made in laboratory and in each sample sought to find at least 100 foraminifera per ml. The species identification was made with reference specified material and collection available on IGCE-UNESPetro, Rio Claro. The community structure was studied in terms of richness, diversity and species composition and was made the results comparison from similar areas to interpret the depositional environment. Were found 21 species within them 13 calcareous and 8 binders, being the most abundant and frequent species Ammonia tepida, Ammonia parkinsoniana e Elphidium spp. Essentially there wasn’t change in the community structure within the period covered by the core which reflects an environment of outer margin of mangrove without noticeable change in relative sea level at the respective time of deposition of muddy sediments. The community structure here recognized its similar to estuarine environment well maintained which indicates a low human impact in the area over the time interval. The agreement of the results...

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Atualmente as iniciativas em educação a distância vêm crescendo significativamente, contudo, acreditamos que esse crescimento não veio acompanhado de igual reflexão sobre as práticas dessa modalidade educacional, por isso, esse estudo busca ser uma iniciativa nesse sentido, pretende buscar quais as características necessárias (de interação, da atividade, da tecnologia, visuais etc.) para promover e manter uma comunidade online de aprendizagem. O foco nas comunidades online se deve ao fato de que elas possibilitam elevado grau de interação entre seus participantes, o que as torna desejáveis em cursos de educação a distância, uma vez que acreditamos que a aprendizagem ocorre na interação entre os sujeitos, alunos e professores, as mídias e o objeto de conhecimento. Baseamo-nos em princípios da metodologia qualitativa de pesquisa e nos utilizamos de procedimentos como a observação participante de um curso a distância, intitulado Tendências em Educação Matemática que foi oferecido no primeiro semestre desse ano pelo Grupo de Pesquisa em Informática, outras Mídias e Educação Matemática (GPIMEM), do departamento de Matemática da UNESP de Rio Claro. Realizamos também entrevista com alguns alunos do curso, como forma de tentar melhor compreender algumas questões, além de análise de alguns documentos gerados pelo mesmo, tais como o programa e a avaliação final proposta pela administração e respondida pelos alunos. Para este trabalho definimos algumas características necessárias para obter e manter uma comunidade online de aprendizagem de acordo com a bibliografia específica e buscamos verificar sua ocorrência no curso observado, como forma de buscar elaborar reflexões sobre elas e de contribuir para futuras iniciativas nesse sentido. Concluímos que grande parte dessas características foi encontrada no curso estudado e que os problemas tecnológicos... (Resumo completo, clicar acesso eletrônico abaixo)

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The following work had as one of major goals to summarize everything that was learnt and experienced during the Geography Graduation Course and doing it the beginning of a journey towards understanding the phenomena relevant to individuals in society and the urban space over the nature. This work has the background one of the poorest places in South America, but that comes up reflections and interpretations regarding the life and geographical science. To understand this, it was necessary to rescue the local historic process, report their specificities, thus, drawing a parallel with the geographical theories. There was an attempt, therefore, to encompass the theoretical knowledge to understand the different socio-spatial identities, territories and socioeconomic contexts

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To understand how biological phenomena emerge, the nonlinear interactions among the components envolved in these and the correspondent connected elements, like genes, proteins, etc., can be represented by a mathematical object called graph or network, where interacting elements are represented by edges connecting pairs of nodes. The analysis of various graph-related properties of biological networks has revealed many clues about biological processes. Among these properties, the community structure, i.e. groups of nodes densely connected among themselves, but sparsely connected to other groups, are important for identifying separable functional modules within biological systems for the comprehension of the high-level organization of the cell. Communities' detection can be performed by many algorithms, but most of them are based on the density of interactions among nodes of the same community. So far, the detection and analysis of network communities in biological networks have only been pursued for networks composed by one type of interaction (e.g. protein-protein interactions or metabolic interactions). Since a real biological network is simultaneously composed by protein-protein, metabolic and transcriptional regulatory interactions, it would be interesting to investigate how communities are organized in this type of network. For this purpose, we detected the communities in an integrated biological network of the Escherichia coli and Saccharomyces cerevisiae by using the Clique Percolation Method and we veri ed, by calculating the frequency of each type of interaction and its related entropy, if components of communities... (Complete abstract click electronic access below)