Lake Eutrophication
Mostrando 1-12 de 13 artigos, teses e dissertações.
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1. Analysis of cloud condition on Sentinel-2 MSI and Landsat-8 OLI images of a public supply lake in Belém-Pará-Brazil
Resumo O processo de eutrofização leva à redução da qualidade da água e a perdas econômicas no mundo todo. Além disso, é possível aplicar técnicas de sensoriamento remoto para o monitoramento de ambientes aquáticos. Neste estudo, objetivou-se analisar o uso combinado dos dados Sentinel-2 Multispectral Instrument e Landsat-8 Operational Land Image
Rev. Ambient. Água. Publicado em: 15/07/2019
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2. An assessment of the factors determining rotifer assemblage in river-lake systems: the effects of seasonality and habitat
ABSTRACT Zooplankton exhibit several trends of variation in space and time, and these trends can be more evident in natural environments without anthropic perturbations. Examples of anthropic factors are climate change, eutrophication and construction of reservoirs. This study evaluated the influence of three factors - seasonality, type of environment and th
Zoologia (Curitiba). Publicado em: 06/06/2019
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3. Impacts of drying and reflooding on water quality of a tropical semi-arid reservoir during an extended drought event
Resumo Objetivo O objetivo deste estudo foi analisar a qualidade da água de um reservatório do semiárido tropical após esgotamento hídrico durante um evento de seca prolongada. Em termos de impactos na qualidade da água, após um evento de esgotamento hídrico é esperado que haja melhorias com a renovação das águas. Menor biomassa algal, maior tra
Acta Limnol. Bras.. Publicado em: 16/05/2019
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4. Holocene history of a lake filling and vegetation dynamics of the Serra Sul dos Carajás, southeast Amazonia
ABSTRACT Down-core changes in sedimentary facies, elemental geochemistry, pollen, spore, δ13C, δ15N and radiocarbon records from a filled lake, named R4, of the Serra Sul dos Carajás were used to study the relationship between the paleomorphological and paleoecological processes and their significance for Holocene paleoclimatology of the southeast Amazoni
An. Acad. Bras. Ciênc.. Publicado em: 24/07/2017
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5. O papel das macrófitas submersas sobre a qualidade da água, restauração e conservaçao de lagos rasos subtropicais : estudo de caso, a Lagoa Mangueira, RS
O objetivo desta Tese foi avaliar o papel da macrófitas submersas em relação à qualidade da água, interações com o fitoplâncton e ciclagem biogeoquímica na Lagoa Mangueira, um grande lago raso subtropical, no sul do Brasil. Para alcançar estes objetivos, este trabalho conta com uma série de abordagens, como: levantamentos de campo, etapas experime
Publicado em: 2010
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6. Diet of Cnesterodon decemmaculatus (Poeciliidae) and Jenynsia multidentata (Anablepidae) in a hypertrophic shallow lake of Uruguay
Diet of Cnesterodon decemmaculatus (Jenyns, 1842) and Jenynsia multidentata (Jenyns, 1842) were analysed in Lake Rodó, an urban hypertrophic lake from Montevideo, Uruguay. Both species displayed omnivory. The most consumed items for C. decemmaculatus were zooplankton, periphyton, phytoplankton and detritus; the diet of J. multidentata included zooplankton,
Iheringia. Série Zoologia. Publicado em: 2009-03
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7. Simulação bidimensional da qualidade da água do Lago do Descoberto (DF/GO)
Eutrophication of water bodies is caused by high concentrations of phosphorus and nitrogen, leading to water quality declining. Accordingly, there is a concern to evaluate the quality of water for public supply. This research aims to show the dynamic behavior of the concentrations of these nutrients, dissolved oxygen and water temperature in Descoberto Lake
Publicado em: 2009
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8. Avaliação limnológica da lagoa central (Município de Lagoa Santa - MG): uma abordagem espacial
The concern about the decrease of ecological health of freshwater resources has been increasing dramatically in recent years. Therefore, there is a huge demand of finding new technologies aimed at the recovery and conservation of freshwater resources specially in the tropical belt. Accordingly, the application of new technologies such as GIS (Geographic Info
Publicado em: 2009
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9. 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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10. Estudo da comunidade fitoplanctônica como bioindicador de poluição em três reservatórios em série do Parque Estadual das Fontes do Ipiranga (PEFI), São Paulo, SP / Phytoplankton communitys study as bioindicator of pollution in three cascading reservoir system in Parque Estadual das Fontes do Ipiranga (PEFI), São Paulo, SP
The three shallow cascading reservoir system are located in Parque Estadual das Fontes do Ipiranga (PEFI) Biological Reserve in the southern of São Paulo city where located headwater Ipiranga Stream. The first reservoir is linked to Lago das Garças, a shallow and eutrophic environment, where have become frequent blooms of Cyanobacteria that produce aggress
Publicado em: 2007
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11. Utilization of aquatic macrophytes in the adobes production: a case study in the Salto Grande reservoir (Americana SP) / Utilização de macrófitas aquáticas na produção de adobe: um estudo de caso no reservatório de Salto Grande (Americana - SP)
This work intends to optimise the utilization of aquatic macrophyte biomass in the adobe (a sun-dried mud brick) production, based on the study of the physical and mechanical characteristics of these bricks and the macrophytes biomass estimate as well as their chemical characteristics. The research was developed in the Salto Grande Reservoir region, in Ameri
Publicado em: 2002
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12. The Sedimentary Record of the Eutrophication of Lake Washington*
Lake Washington changed in productivity, abundance of organisms, and chemical character as a result of enrichment with sewage effluent and subsequent diversion of the effluent. A record of many of the changes is left in the sediments in the form of concentrations of specific elements or compounds and recognizable remains of organisms, especially diatoms. The