Tropical Lake
Mostrando 1-12 de 33 artigos, teses e dissertações.
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1. Advances and limitations of using satellites to monitor cyanobacterial harmful algal blooms
Resumo O uso de satélites para o monitoramento de florestas é uma prática conhecida e comum. Entretanto o monitoramento remoto da qualidade da água ainda é escarça. Nos Estados Unidos da América (EUA), o uso deste tipo de dado está começando a ser utilizado para o monitoramento da floração de cianobactérias tóxicas (FCTs). Essa ferramenta podero
Acta Limnol. Bras.. Publicado em: 03/06/2019
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2. 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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3. Partitioning of the diffuse attenuation coefficient for photosynthetically available irradiance in a deep dendritic tropical lake
ABSTRACT We studied the effects of particulate and dissolved optically active components on the attenuation of photosynthetic active radiation (PAR) in a tropical lake. The temporal and spatial distribution of tripton, Chl-a and aCDOM(440) and their relative contribution to the diffuse PAR attenuation coefficient (Kd) was investigated at 21 sites (dry and we
An. Acad. Bras. Ciênc.. Publicado em: 2017-05
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4. Morphometry and mixing regime of a tropical lake: Lake Nova (Southeastern Brazil)
ABSTRACT Lake Nova (15.5 km2) is the second largest lake in the Lower Doce River Valley (Southeastern Brazil). A better understanding of ecosystem structure and functioning requires knowledge about lake morphometry, given that lake basin form influences water column stratification. The present study aims to contribute to the understanding of relationship bet
An. Acad. Bras. Ciênc.. Publicado em: 01/09/2016
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5. Impactos de El Niño y La Niña en las lluvias del Perú (1965-2007)
The impacts of El Niño (EN) and La Niña (LN) in rainfall in Peru are evaluated using monthly data (1965-2007) of 155 stations distributed over the three hydrographic drainages of Peru: 85 in the Pacific (VP), 21 in the Lake Titicaca (VT) and 49 in the Amazon (VA). To classify El Niño and La Niña is used the Index Troup Southern Oscillation (SOI) based on
Rev. bras. meteorol.. Publicado em: 2014-06
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6. Distribution of the cladoceran Bosmina huaronensis Delachaux, 1918 and niche differentiation among populations from different biogeographic regions
Described from a high-altitude lake in Peru, Bosmina huaronensis Delachaux, 1918 has been recorded in diverse kinds of water bodies in South and North America, suggesting that this species has high environmental tolerance and a wide niche breadth. The present study surveyed the occurrence records of B. huaronensis from 55 localities and, using multivariate a
Nauplius. Publicado em: 2013-12
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7. A dinâmica do fitoplâncton em uma várzea Amazônica variações sazonal e nictimeral (Várzea do Lago Grande de Curuai Pará, Brasil) / The dynamics of phytoplankton in an Amazon fllodplain - seasonal and nictemeral variations (Lago Grande de Curuai - Pará, Brasil)
The river-floodplain systems are environments submitted a lateral overflow of river channel due the rains and/or underground waters. They are controlled by the type of climate, morphology and local effects. The lowland lakes are also highly productive because of the rich sources of primary carbon. The sediments transport and suspended and dissolved matter ar
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 28/03/2011
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8. Simulação biofisicoquímica em reservatório tropical polimítico / Biophysicochemicall simulation in a tropical polimithic reservoir
O reservatório do Lobo, localizado no estado de São Paulo, é um sistema dinâmico no qual se desenvolve um ciclo diurno de estratificação e mistura, de modo similar ao que tem sido observado em outros lagos tropicais. Utilizou-se simulação 3D computacional com os softwares ELCOM (Estuary and Lake Computer Model) acoplado ao CAEDYM (Computacional Aquat
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 27/03/2011
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9. Trophic interactions among sympatric zooplanktivorous fish species in volume change conditions in a large, shallow, tropical lake
Significant reductions in the water volume of shallow lakes impose a restriction on species segregation promoting more interactions in the trophic relationships. The diets of three closely related zooplanktivorous silversides belonging to the Atherinopsidae species flock of lake Chapala , Mexico, were analyzed at two sites (Chirostoma jordani, C. labarcae, a
Neotropical Ichthyology. Publicado em: 04/02/2011
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10. Spatial patterns of zooplanktivore Chirostoma species (Atherinopsidae) during water-level fluctuation in the shallow tropical Lake Chapala, Mexico: seasonal and interannual analysis
This study addresses the influence of water-level fluctuations on fish distribution at two temporal scales: seasonal (dry and rainy) and interannual (low and high volume conditions). The analysis of abundance relationships among three zooplanktivore Chirostoma species at fifteen sites in Lake Chapala, Mexico, revealed the significant influence of contrasting
Neotropical Ichthyology. Publicado em: 2011
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11. Oxygen depletion events control the invasive golden mussel (Limnoperna fortunei) in a tropical floodplain.
Over the past 10 years the golden mussel (Limnoperna fortunei), an exotic species native to eastern Asia, has become widespread and abundant in the Pantanal Wetland, Brazil. Oxygen concentrations are often low in rivers and floodplain waters of the Pantanal and oxygen depletion events can last for several weeks during the rising water phase. Although mortali
Wetlands. Publicado em: 2011
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12. Diatom assemblage in a tropical lake of northeastern Brazil
Com o objetivo de se conhecer a dinâmica espacial e a distribuição das diatomáceas contidas no sedimento superficial do lago Caçó, durante o período de chuvas (abril de 1999) foram realizadas coletas em um "transect" horizontal. A partir da observação destas coletas efetuadas a cada 1 metro pode-se observar que a distribuição das diatomáceas este
Brazilian Archives of Biology and Technology. Publicado em: 2010-02