Pasture Streams
Mostrando 1-11 de 11 artigos, teses e dissertações.
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1. Longitudinal dimensions of land-use impacts in riverine ecosystems
Resumo: Objetivo Os rios são conectados longitudinalmente através do fluxo de água e as dimensões espaciais dos efeitos das mudanças na vegetação ripária local ainda são pouco compreendidas. Mudanças recentes na Lei de Proteção da Vegetação Nativa permitem a redução de faixas laterais de proteção e anistia para a remoção de vegetação c
Acta Limnol. Bras.. Publicado em: 15/07/2019
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2. Does the landscape surrounding streams affect the occurrence of freshwater crabs? A case study of the genus Aegla (Crustacea: Decapoda: Anomura) in subtropical basins
ABSTRACT Changes in the landscape where watersheds are located may affect the stream biota in different ways. In order to explore this idea, we collected freshwater crabs of the genus Aegla Leach, 1820 in subtropical region of southern Brazil. We also measured a number of landscape features and physico-chemical variables in the collection streams and surroun
Iheringia, Sér. Zool.. Publicado em: 21/06/2018
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3. Efeitos da presença de macrófitas nos macroinvertebrados de córregos tropicais
O desmatamento das matas ciliares realizado por atividades de pastagens possibilita maior incidência solar sobre o leito dos córregos. A alta entrada de luz favorece o desenvolvimento de bancos de macrófitas, que além de contribuírem com alta taxa de produção primária são importante substrato para os organismos aquáticos. Esse substrato gera subuni
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 08/04/2011
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4. Efeitos da fragmentação de habitat sobre a comunidade de pequenos mamíferos de Mata Atlântica no Estado de São Paulo / Effects of habitat fragmentation on community of the Atlantic forest small mammals in São Paulo State
The negative effects of habitat fragmentation on small-mammals are widely recognized. Nevertheless, the intensity of these effects depend on multiple factors such as the pattern of fragmentation, the evaluated scale, the permeability of different types of matrices, and the behavioral plasticity of different groups of species. In this study, we evaluated the
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 30/03/2010
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5. Study of the assemblage of macroinvertebrates in streams of Mata Atlântica, using the isotope technique of delta13C e delta15N / Estudo da assembléia de macroinvertebrados em riachos da Mata Atlântica, utilizando a técnica isotópica de delta13C e delta15N
Several studies show a strong influence of terrestrial environment on streams contained therein. On headwater streams that influence is not just related to chemical and physical variables, but also is directly linked to what the stream metabolism, regulating the direct input of nutrients in the form of litter and particulate matter and internal productivity
Publicado em: 2010
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6. Environmental characterization of the Mogi Guaçu river upstream region (Bom Repouso - MG): replicability strategies and guidelines for drawing up the environmental adequation plan / Caracterização ambiental da região de montante do rio Mogi-Guaçu (Bom Repouso - MG): estratégias para replicabilidade e diretrizes para elaboração do plano de adequação ambiental
The upstream region of the river Mogi Guaçu is considered strategic regarding the water issue, with hundreds of springs that contribute to the formation of brooks and streams and which enable the multiple uses of water in cities located in the states of Minas Gerais and São Paulo. Considering this, we tried to carry out an environmental diagnostic (between
Publicado em: 2009
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7. Composição e distribuição de coleoptera aquáticos (insecta) em córregos de baixa ordem no Estado de São Paulo, Brasil.
The beetles are an important part of the insect fauna of most aquatic ecosystems. However, with the exception of the Elmidae, they have not been used extensively for water quality evaluation. This is due in large part to the fact that most water beetle adults and larvae, with the exception of the elmids, some adult Dryopidae and larvae Psephenidae, are air-b
Publicado em: 2007
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8. DISSOLVED ORGANIC CARBON CONCENTRATIONS AND BALANCES IN TWO WATERSHEDS OF RONDÔNIA: COMPARASION BETWEEN FOREST AND PASTURE / "Concentrações e balanços de carbono orgânico dissolvido em duas bacias do Estado de Rondônia: uma comparação entre floresta e pastagem"
Dissolved Organic Carbon (DOC) is one of the main fractions of organic carbon exported in rivers and other flow paths in watersheds. In the Amazon, studies of DOC in waters focus mainly on the large basins of the central region, with few analyses of changes in its dynamics after the replacement of forests by pastures, one of the most important land use chang
Publicado em: 2006
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9. Manejo da pastagem e sua inter-relaÃÃo com atributos fÃsicos do solo. / Pasture management and itâs inter-relationship with soil physical attributes
The work was performed on agricultural properties, located on the hydrographyc sub-basins of the Santa Cruz and Ãgua Limpa streams, belonging to the Rio Grande basin, Lavras, MG, with the objective of evaluating and correlating soil physical attributes with pasture bromatological and productive aspects. Through soil chemical analysis, it was found that Sant
Publicado em: 2006
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10. Usos múltiplos e qualidade das águas da Bacia do Baixo Itajaí-Açú-SC: elementos para um gerenciamento integrado.
The Itajaí-Açu river watershed is characterized by moderate agricultural use and rapid urban development. The risks on freshwater resources are notorious, but there is a lack of systematic technical data to qualify the level of degradation and to support decisions and forecasting. The main purpose of the present study was to diagnose the water quality of t
Publicado em: 2005
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11. Bovine Enteroviruses as Indicators of Fecal Contamination
Surface waters frequently have been contaminated with human enteric viruses, and it is likely that animal enteric viruses have contaminated surface waters also. Bovine enteroviruses (BEV), found in cattle worldwide, usually cause asymptomatic infections and are excreted in the feces of infected animals in large numbers. In this study, the prevalence and geno
American Society for Microbiology.