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	Provedor de dados Anais da ABC (AABC) (2) Autor Araujo,Moacyr (2) Barros-Neto,Benício (1) Muniz,Kátia (1) Noriega,Carlos E. D (1) Santos,Maria L.S. (1) Palavra-chave Amazon Continental Shelf (1) Autotrophy (1) Barra das Jangadas Estuary (1) Brazil (1) Carbon dioxide (1) Heterotrophy (1) Mathematical modeling (1) Nitrogen (1) Phosphate (1) Seasonal variations (1) Mais... Tipo do documento Info:eu-repo/semantics/article (2) Ano 2011 (1) 2008 (1) País Brazil (2) Idioma Inglês (2)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 2 Primeira ... 1 ... Última Nutrient and phytoplankton biomass in the Amazon River shelf waters Anais da ABC (AABC) Santos,Maria L.S.; Muniz,Kátia; Barros-Neto,Benício; Araujo,Moacyr. The Amazon River estuary is notable at the Amazon Continental Shelf, where the presence of the large amount of water originating from the Amazon during the river's falling discharge period was made evident by the low salinity values and high nutrient levels. Even so, the presence of oceanic waters in the shelf area was significant. Dissolved organic nitrogen was the predominant species of the nitrogen cycle phases, followed by total particulate nitrogen, nitrate, ammonium and nitrite. The chlorophyll a data in the eutrophic area indicated that there is sufficient nitrogen in the area to withstand productivity, though dissolved inorganic nitrogen removal processes are faster than regeneration or mineralization. The anomalous amounts of inorganic dissolved... Tipo: Info:eu-repo/semantics/article Palavras-chave: Amazon Continental Shelf; Nitrogen; Phosphate; Mathematical modeling. Ano: 2008 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652008000400011 Nutrient budgets (C, N and P) and trophic dynamicsof a Brazilian tropical estuary: Barra das Jangadas Anais da ABC (AABC) Noriega,Carlos E. D; Araujo,Moacyr. This paper focuses on the nutrient dynamics of a tropical estuary on the northeastern Brazilian coast, studied using the LOICZ biogeochemical budgeting protocol. We describe the methodology and assumptions underlying this model. Input data (monthly for rainfall, evaporation, river discharge, and concentrations of salt, phosphorus and nitrogen) were obtained during field campaigns in the Barra das Jangadas Estuary (BJE) over a 5 years period (1999 to 2003). Mass balance results indicate large inputs of nutrients to the system. The model shows that the seasonal variation of the Net Ecosystem Metabolism (NEM) indicates that the system passes from a stage of organic matter liquid production and mineralization during the dry season (-0.5 mmoles C m-2 d-1) to... Tipo: Info:eu-repo/semantics/article Palavras-chave: Brazil; Barra das Jangadas Estuary; Seasonal variations; Heterotrophy; Autotrophy; Carbon dioxide. Ano: 2011 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652011000200007 Registros recuperados: 2 Primeira ... 1 ... Última

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