Estudo das diferentes formas de fósforo nas águas da plataforma continental do Amazonas Study of different forms of phosphorus in the Amazon continental shelf waters

• Main Authors: Maria de Lourdes Souza Santos, Kátia Muniz, Fernando Antonio do Nascimento Feitosa, Benício de Barros Neto
• Format: Article
• Language: English
• Published: Sociedade Brasileira de Química 2007-06-01
• Series: Química Nova
• Subjects: Amazon; phosphorus; chlorophyll a
• Online Access: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422007000300012

<abstract language="eng">Hydrological samples were collected on the continental shelf of the Amazon river to determine particulate organic and inorganic matter, dissolved organic phosphorus (DOP), phosphate, total particulate phosphorus (TPP), chlorophyll a, temperature, salinity, pH, water transparency, dissolved oxygen (DO) and saturation rate. The objective was to study the forms of DOP, phosphate and TPP. In the euphotic layer, the fluvial discharge from the Amazon river favored the distribution of phosphate, TPP and DOP. In the aphotic layer, the phosphate concentration increased due to the decomposition of DOP and TPP. This increase is due to the absence of photosynthetic processes.