Study of different forms of phosphorus in the Amazon continental shelf waters

Quimica nova

Muniz, Kátia¹  Feitosa, Fernando Antonio do Nascimento¹  Barros Neto, Benício de¹  Santos, Maria de Lourdes Souza² 

[1] Universidade Federal de Pernambuco, Recife, Brasil;Universidade Federal do Pará, Bragança, Brasil

关键词: Amazon;    phosphorus;    chlorophyll a.;   

DOI  :  10.1590/S0100-40422007000300012

学科分类：化学（综合）

来源: Sociedade Brasileira de Quimica

【 摘 要 】

Hydrological sampleswere collected on the continental shelf of the Amazon river to determine particulateorganic 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 objectivewas to study the forms of DOP, phosphate and TPP. In the euphotic layer, thefluvial discharge from the Amazon river favored the distribution of phosphate,TPP and DOP. In the aphotic layer, the phosphate concentration increased dueto the decomposition of DOP and TPP. This increase is due to the absence ofphotosynthetic processes.

【 授权许可】

CC BY