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Distinct age and landscape influence on two reservoirs under the same climate IPB - Escola Superior Agrária
Geraldes, Ana Maria; Boavida, Maria José.
With the purpose of finding out whether different landscape occupation could affect water quality in two reservoirs of distinct age and subjected to the same climatic influence, several factors were investigated in a study lasting from January 2000 till December 2001. Total phosphorus, orthophosphate, chlorophyll a concentrations and water colour were determined monthly in winter and biweekly in summer, in two reservoirs located in the Portuguese part of River Douro catchment. Complementarily, variables such as nitrate, ammonium ion and ammonia gas, as well as water temperature, dissolved oxygen, conductivity, and transparency were measured. Trophic state of both reservoirs was assessed by computation of Carlson’s Trophic State Index. The potential...
Tipo: Article Palavras-chave: Trophic state; Nutrient sources; Land use; Reservoir age; Water quality; Socio-economic influence.
Ano: 2003 URL:
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