Vertical Stratification
Mostrando 25-36 de 54 artigos, teses e dissertações.
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25. Influence of environmental conditions on health of engraulidid larvae collected in Santos (SP) / Influência do ambiente na higidez de larvas de engraulidídeos coletados na região de Santos (SP)
The aim of this study was to analyze influence of environmental conditions on health of engraulidid larvae of the continental shelf off Santos (24º49´S - 23º49´S e 46º55´W - 45º24´W). Samples were collected during two oceanographic cruises (September 2005 and March 2006). Differences among hydrographic conditions were verified between surveys: in Sep
Publicado em: 2008
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26. Inter-relação paleossolos e sedimentos em lençois de areia eolica da Formação Marilia (noroeste da Bacia Bauru) / Iterrelation of palaeosols and sediment in the ancient Marilia Formation aeolian sand sheets (northwestern Bauru Basin)
The Marília Formation (Maastrichtian), outcropping in the northwestern portion of the Bauru Basin (Goiás and Mato Grosso do Sul brazilian states), is interpreted here as an ancient Aeolian sand sheet. The vertical succession, c.150 m thick, is made up of very fine to medium-grained sandstone and, it is characterised by cyclic interbedding of sediments and
Publicado em: 2008
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27. Eutrophication of Cruzeta reservoir in the representative basin of the Seridó river - RN. Natal / Eutrofização do Reservatório Cruzeta na bacia representativa do rio Seridó RN
Eutrophication has been listed as one of the main problems of water pollution on a global level. In the Brazilian semi-arid areas this problem takes even greater proportions due to characteristical water scarcity of the region. It is extremely important to the predictive eutrophication models development and to the reservoirs management in the semi-arid regi
Publicado em: 2008
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28. Importance of riparian corridors for the fauna: small mammals in forest patches, surrounding matrix and linear elements in an Atlantic forest fragmented landscape / Importância dos corredores ripários para a fauna - pequenos mamíferos em manchas de floresta, matriz do entorno e elementos lineares em uma paisagem fragmentada de Mata Atlântica
This master thesis aimed to evaluate the importance of riparian corridors for the fauna in an Atlantic Forest fragmented landscape. In four systems composed by fragment corridor fragment, we evaluate both the small mammal assemblage (chapter 2) and the habitat quality measured through the vegetation structure and food resources availability for the fauna (ch
Publicado em: 2008
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29. Isotopic composition of respired CO2 and seasonal variability in the Amazon tropical Forest / A composição isotópica do CO2 respirado e sua variabilidade sazonal na Amazônia Oriental
This study was conducted in 2003 and 2004 at the km 67 old growth forest in the Tapajós National Forest (2 ° 51'S 54 ° 58'W). The objective was measure the carbon isotope ratio (13C/12C) of respired CO2 from the entire ecosystem and isotope composition of organic components leaves, soil, litter and dead wood. The Keeling plot technique and
Publicado em: 2007
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30. Avaliação do funcionamento do sistema de tratamento de esgoto de Cajati, Vale do Ribeira de Iguape (SP), em diferentes épocas do ano / Evaluation of performance of the Cajati wastewater treatment, Ribeira do Iguape Valley (SP) in different times of the year
Esta pesquisa foi desenvolvida na Estação de Tratamento de Esgoto de Cajati, onde o tratamento é realizado por lagoas de estabilização com sistema australiano. Em amostragens de variação nictemeral e sazonal, observou-se estratificação térmica nas duas lagoas, sendo que esta foi mais acentuada em abril. Em todos os períodos, a coluna de água este
Publicado em: 2007
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31. STUDY OF THE TROPHIC LEVEL OF THE ACARAPE DO MEIO RESERVOIR, THROUGH THE DETERMINATION OF INDICATORS OF WATER QUALITY / Estudo do estado trÃfico do reservatÃrio Acarape do meio mediante a determinaÃÃo de indicadores de qualidade de Ãgua
The process of storage of water in semi-arid regions has become a considerable way of reducing the shortage of this natural resource. Like this, it is common in areas with characteristics of the Brazilian Northeast, the construction of great reservoirs that has been being to assist, with certain regularity, demands for the most several uses. On the other han
Publicado em: 2007
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32. The influence of stable stratification on the transition to turbulence in a temporal mixing layer
The transition to turbulence in a stably stratified flow is a problem of considerable interest in fluid dynamics with applications in both geophysical sciences and engineering. This transition is controlled by competition between the vertical shear of the base flow and the buoyancy forces due to the density stratification. The present work investigates numer
Journal of the Brazilian Society of Mechanical Sciences and Engineering. Publicado em: 2006-06
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33. Floral resource for birds in an Atlantic montane raiforest site : seasonality and vertical distribution / Recurso floral para aves em uma comunidade de Mata Atlantica de encosta : sazonalidade e distribuição vertical
Hummingbirds are considered the most important vertebrate pollinators in the Neotropics. Other flowervisiting birds are often considered as parasites of the flower-hummingbird relationship, not presenting the high degree of specialization for nectarivory as hummingbirds. Although ornithophilous flowers are very showy, displaying colorful floral parts or stru
Publicado em: 2006
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34. "Experimentos e modelagem numérica com aplicação ao Estuário Tropical do Rio Curimataú, RN" / Experiments and numerical model with application to the tropical estuary of the Catimataú river, RN
The distribution and variability of the termohaline properties and the three-dimensional circulation of the Curimataú river estuary had been studied with the application of the numerical model of simulations Delft3D-Flow, validated with experimental data measured during two consecutive cycles of neap and spring tide. Two numerical grids were applied with th
Publicado em: 2006
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35. Diversidad de arañas (Arachnida: Araneae) en el Parque Nacional Natural Isla Gorgona, pacífico colombiano
In order to establish an approximation to the araneofauna in the Isla Gorgona, located in the Pacific Ocean at approximately 60 km from the SW coast of Colombia, we took samples in July 2003, using various methods such as capturing the spiders manually, pitfall traps, sweeping with an entomological net, and beating foliage. The samples were taken during the
Biota Neotropica. Publicado em: 2005
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36. Dinâmica da regeneração natural de espécies arbóreas e arbustivas no sub-bosque de povoamento de Mimosa scabrella Bentham, em área minerada, em Poços de Caldas-MG / Dynamics of natural regeneration of tree and shrub community in understory of stands of Mimosa scabrella Bentham in mined area, Poços de Caldas, Brazil
In 1982/1983 as part of its mine rehabilitation strategy, ALCOA Alumínio S.A. hydroseeded herbaceous species and planted tree seedlings of Mimosa scabrella Bentham in Retiro-Branco bauxite mining site. In 1997, 19 sample plots of 50m2 were implanted in this area for initial characterization of natural regeneration process. Sampling sufficiency and ideal siz
Publicado em: 2002