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	Provedor de dados BABT (2) Autor Fonseca,André Luiz dos Santos (2) Marinho,Claudio Cardoso (2) Esteves,Francisco de Assis (1) Esteves,Franscisco de Assis (1) Minello,Murilo (1) Palavra-chave Methane (2) Aquatic macrophytes (1) Coastal lagoons (1) Eichhornia azurea (1) Eutrophication (1) Global warming (1) Salvinia auriculata. (1) Sediment (1) Water column (1) Mais... Tipo do documento Info:eu-repo/semantics/article (2) Ano 2017 (1) 2004 (1) País Brazil (2) Idioma Inglês (2)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 2 Primeira ... 1 ... Última Methane concentration in water column and in pore water of a coastal lagoon (Cabiúnas lagoon, Macaé, RJ, Brazil) BABT Fonseca,André Luiz dos Santos; Minello,Murilo; Marinho,Claudio Cardoso; Esteves,Francisco de Assis. The aim of this study was to evaluate methane concentration in water column and pore water at limnetic and littoral regions of a coastal lagoon. At the littoral region samples were taken from three monospecific macrophytes stands (Typha domingensis, Eleocharis interstincta and Potamogeton stenostachys). The methane concentration in the pore water at the littoral region was higher than the concentration found at the limnetic region in each fraction of the sediment. The higher methane concentration in the superficial fraction of the sediment (0-2 cm) was shown at the P. stenostachys stand (3.7 mM). It was the only significantly different (p<0.05) from the limnetic region. The pore water methane concentration increased with depth at the aquatic macrophytes... Tipo: Info:eu-repo/semantics/article Palavras-chave: Methane; Water column; Sediment; Aquatic macrophytes; Coastal lagoons. Ano: 2004 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132004000200018 Floating Aquatic Macrophytes Decrease the Methane Concentration in the Water Column of a Tropical Coastal Lagoon: Implications for Methane Oxidation and Emission BABT Fonseca,André Luiz dos Santos; Marinho,Claudio Cardoso; Esteves,Franscisco de Assis. ABSTRACT In wetlands, the knowledge accumulated on the role of aquatic plants in the methane cycle focused on emergent macrophytes, to the detriment of other typologies. Herein, we evaluated whether the free-floating macrophyte Salvinia auriculata Aubl. and the floating-leaved macrophyte Eichhornia azurea (Sw.) Kunth. decrease the water column methane concentrations compared to a plant-free surface. We prepared microcosms by inserting an individual of S. auriculata or of E. azurea into chambers filled with lagoon water previously bubbled with CH4. Another set of chambers was incubated only with the prepared water, representing the plant-free surface. Half of the chambers were kept in the dark and half in sunlight to simulate a diel cycle. We observed... Tipo: Info:eu-repo/semantics/article Palavras-chave: Methane; Eutrophication; Global warming; Eichhornia azurea; Salvinia auriculata.. Ano: 2017 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132017000100702 Registros recuperados: 2 Primeira ... 1 ... Última

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