248 resultados para Radionuclídeos naturais sudeste Brasil
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Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
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Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
Ocorrência e distribuição espacial de mamíferos não-voadores em reflorestamento no sudeste do Brasil
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The Conservation in countrysides landscapes only it will be understood in the context of the habitat fragmentation that have been affected the species richness, abundance and distribution. We carried out a mammal survey in platation forest at São Paulo State and 8 we discussed the species richness comparing with others sites surveyed elsewhere. We investigate the landscape influence in the mammal species distribution through spatial analysis. The absence of primate species in plantation forests appear to be a pattern for this environments. The species richness was similar among areas and it was higher when there have contiguous native forest remnants. Moreover the landscape interference don’t appeared affect the mammal species distribution. In overview the landscape connectivity is ameliorate with forest plantation. However, those species more susceptible to extinction in fragmented landscape only can persist when there are contiguous forest fragments from the plantation forests. The management of plantation forests can improves the conservation value for medium and large size mammals species at countryside landscapes.
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The common vampire bat Desmodus rotundus has as main food source blood of medium and large sizes mammals, but sporadically is observed feeding on birds, causing occasionally excessive bleeding and economic losses. Due to this D. rotundus is one of the most studied species of bats in the Americas. Once known that the lunar clarity might influence the nocturnal activities of the common vampire bats, the present study was carried out to know the behavior and schedules of emergencies and returns of bats to the shelter, its social behavior at the shelter´s entrance, especially of the dominant male, and the size and composition of the colony in different moon phases. The colony was composed by 105 individuals (65 females and 40 males) harboring in a hollow-tree of Farm Edgardia in Botucatu Municipality, State of São Paulo. Through the eight filming sessions, two for each moon phase, it was possible to observe that the distribution of emergences and returns to the shelter thought the night followed a specific pattern for each moon phase. The greatest number of emerging bats occurred in periods in which the moon was not born yet and the largest number of returns just before moon has been reached its maximum level in the sky. Therefore, the time period that bats are staying outside the shelter seems to be directly influenced by lunar light. This factor can influence the social activity of the colony and, in particular, the dominant male, who remains still on tree’s trunk, near the entrance of the shelter with greater frequency during periods of low moon light
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O presente estudo teve por objetivo verificar a ocorrência das principais espécies de moscas da família Calliphoridae em diferentes ambientes (urbano, rural e silvestre) do município de Botucatu, SP. Para tanto, foram usadas armadilhas apropriadas e iscas, substituídas diariamente, distribuídas em cada local de coleta mensalmente durante aproximadamente o período de um ano. Foram coletados um total de 3188 espécimes. Análises estatísticas e testes de correlação também foram usados para medir a relação das espécies com os fatores ambientais, locais, preferência e atratividade por iscas e as relações e interações ecológicas entre as diferentes espécies
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O genero Musa apresenta características em suas inflorescências como: grande tamanho, visibilidade, odor floral e fluxo de néctar abundante, que tornam o gênero um importante recurso para morcegos fitófagos. O objetivo do presente trabalho foi estudar as interações entre morcegos filostomideos e flores de M. paradisiaca no pomar da fazenda Santo Antônio dos Ipês, Município de Jaú, São Paulo. Três espécies (Glossophaga soricina, Anoura caudifer e Phyllostomus discolor) foram observadas alimentando-se do néctar das flores das bananeiras do pomar. Três formas distintas de comportamento de visita foram observadas: “adejo” para G. soricina e A. caudifer, “pouso de frente na inflorescência” para G. soricina e “pouso de cabeça para baixo na inflorescência” para P. discolor. As visitas ocorreram durante toda noite (das 18h00 às 6h00), com pico de vistas das 20h00 à 1h00. As visitas entre duas sub-famílias ocorriam de forma alternada nestes horários. Apesar das três espécies de filostomideos partilharem o néctar das bananeiras, os glossofagineos são os principais beneficiados por esse recurso alimentar, uma vez que cerca de 88% (N=694) das visitas registradas às suas flores foram realizadas por G. soricina e A. caudifer, enquanto apenas 12% (N=97) foram por P. discolor
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Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
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Pós-graduação em Medicina Veterinária - FCAV
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In this paper, data on the fauna of Ephemeroptera and Trichoptera (ET) from a Cerrado stream was analysed in order to test the hypothesis that the high seasonality of this biome can influence the composition of ET between the wet and dry seasons. The community structure was evaluated using Detrended Correspondence Analysis and Cluster Analysis (Morisita Horn-UPGMA). Environmental factors were analyzed using the Principal Components Analysis. In order to test the effect of abiotic variables on the fauna, It was applied the Procrustean Randomization Test (Protest) and Mantel Test. The environmental factors recorded for this study had a significant effect on the ET fauna from Córrego do Pedregulho. Faunal similarity was high throughout the year, indicating that although there was density of fluctuation, due to rainfall variation, the faunal composition showed little temporal variability. On the other hand, it was possible to observe that the genus Lachlania (Ephemeroptera) occurred preferably during the rainy months and that the faunal composition during the dry season was less variable than those from other seasons. Therefore, environmental seasonality had a partial effect on the faunal composition of ET from Córrego do Pedregulho.
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Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
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Pós-graduação em Geociências e Meio Ambiente - IGCE
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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 Científico e Tecnológico (CNPq)