Encontrados 4 documentos, a visualizar página 1 de 1

Eutrophication-threatened aquatic ecosystems : sediment biogeochemical processe...

Phosphorus fractionation in volcanic lake sediments (Azores – Portugal)

The phosphorus distribution in volcanic sediments of three lakes that are under different anthropogenic pressures in São Miguel island (Azores – Portugal) was evaluated using a sequential extraction scheme. The P-fractionation scheme employs sequential extractions of sediment with NH4Cl, bicarbonate-dithionite (BD), NaOH (at room temperature), HCl and NaOH (at 85 °C) to obtain five P-fractions. The P-fractionat...

Prospective scenarios for water quality and ecological status in Lake Sete Cida...

The design of alternative strategies for water and ecological quality protection at the Lake Verde of Sete Cidades should be coupled with the assessment of future trophic states. Therefore, a mathematical model was developed to make prospective scenarios to reduce the risk of environmental degradation of the lake, and a modified Psenner scheme was used to characterize P distribution in the sediments. The model ...

Contribuição da hidrogeologia para o planeamento e a gestão sustentável da água...

A água subterrânea constitui um recurso de importância estratégica vital nos Açores, o que resulta do seu significado ambiental e do valor sócio-económico e cultural intrínseco. No entanto, no passado, o desenvolvimento deste recurso foi frequentemente realizado sem atender à complexidade e à vulnerabilidade dos sistemas aquíferos. A hidrogeologia dos Açores denota as características peculiares dos meios vulcân...