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	Provedor de dados Rev. Bras. Ciênc. Solo (2) OceanDocs (1) Autor Figueiredo,Cícero Célio de (2) Caixeta,Carla Ferreira (1) Carneiro,Marco Aurélio Carbone (1) Carvalho,Arminda Moreira de (1) Daro, N. (1) Mavuti, K.M. (1) Mutua, A.K. (1) Ramos,Maria Lucrécia Gerosa (1) Resck,Dimas Vital Siqueira (1) Santos,Isis Lima dos (1) Sousa,Alex Antônio Torres Cortês de (1) Tack, M. (1) Mais... Palavra-chave Particulate organic carbon (3) Aggregates (1) Detritus Surface water Suspended matter Phytoplankton Components Nutrients http://aims.fao.org/aos/agrovoc/c_5274 (1) Fractioning (1) Humic substances (1) No-tillage (1) Organic carbon (1) Pasture (1) Suspended particulate matter (1) Mais... Tipo do documento Info:eu-repo/semantics/article (1) Info:eu-repo/semantics/other (1) Journal Contribution (1) Ano 2014 (1) 2010 (1) 2004 (1) País Brazil (2) Belgium (1) Idioma Inglês (3)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 3 Primeira ... 1 ... Última Cover plants and mineral nitrogen: effects on organic matter fractions in an oxisol under no-tillage in the cerrado Rev. Bras. Ciênc. Solo Santos,Isis Lima dos; Caixeta,Carla Ferreira; Sousa,Alex Antônio Torres Cortês de; Figueiredo,Cícero Célio de; Ramos,Maria Lucrécia Gerosa; Carvalho,Arminda Moreira de. Cover plants are essential for the sustainability of no-tillage systems in tropical regions. However, information on the effects of these plants and N fertilization on soil organic matter fractions is still scarce. This study evaluated the effect of cover crops with different chemical composition and of N topdressing on the labile and humified organic matter fractions of an Oxisol of the Cerrado (savanna-like vegetation). The study in a randomized complete block design was arranged in split-plots with three replications. Four cover species were tested in the plots and the presence or absence of N topdressing in the subplot. The following cover species were planted in succession to corn for eight years: Urochloa ruziziensis; Canavalia brasiliensis M. ex... Tipo: Info:eu-repo/semantics/other Palavras-chave: Organic carbon; Humic substances; Particulate organic carbon. Ano: 2014 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832014000600022 Labile and stable fractions of soil organic matter under management systems and native cerrado Rev. Bras. Ciênc. Solo Figueiredo,Cícero Célio de; Resck,Dimas Vital Siqueira; Carneiro,Marco Aurélio Carbone. Soil organic matter can be analyzed on the basis of the different fractions. Changes in the levels of organic matter, caused by land use, can be better understood by alterations in the different compartments. The aim of this study was to evaluate the effect of different management systems on the labile and stable organic matter of a dystrophic Red Latosol (Oxisol). The following properties were determined: total organic C and total N (TOC and TN), particulate organic C and particulate N (POC and PN), organic C and N mineral-associated (MOC and NM) and particulate organic C associated with aggregate classes (POCA). Eight treatments were used: seven with soil management systems and one with native Cerrado as a reference. The experiment was designed to study... Tipo: Info:eu-repo/semantics/article Palavras-chave: Fractioning; Particulate organic carbon; Aggregates; No-tillage; Pasture. Ano: 2010 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832010000300032 Spatial distribution of suspended particulate matter in Mtwapa creek and Funzi Bay, Kenya OceanDocs Mavuti, K.M.; Mutua, A.K.; Daro, N.; Tack, M.. Surface water concentrations of inorganic nutrients and suspended particulate matter (SPM) components from Mtwapa and Shirazi creeks in Kenya were measured and compared. This was aimed at assessing the contribution of phytoplankton carbon, particulate organic carbon (POC) and detritus on the total SPM pool, and the influence of sewage discharge on these components of SPM. The results obtained were compared with those from Ramisi, an estuarine system. Using PCA and cluster analysis, three clear clusters of stations were obtained. The two creek systems (Mtwapa and Shirazi) were separated into two distinct clusters. The cluster comprising five stations in Mtwapa and four in Shirazi was characterised by high levels of POC: phytoplankton carbon ratio and to a... Tipo: Journal Contribution Palavras-chave: Suspended particulate matter; Particulate organic carbon; Detritus Surface water Suspended matter Phytoplankton Components Nutrients http://aims.fao.org/aos/agrovoc/c_5274. Ano: 2004 URL: http://hdl.handle.net/1834/1088 Registros recuperados: 3 Primeira ... 1 ... Última

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