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Monitorização da hidrodinâmica e da qualidade da água no estuário do Rio Mondego
Duarte, António A. L. Sampaio; Vieira, J. M. Pereira; Pardal, Miguel A. C.; Neto, João M.A hidrodinâmica dos sistemas estuarinos favorece a retenção de nutrientes, sustentando uma actividade biológica intensa, facto que potencia o desenvolvimento das comunidades ribeirinhas e intensifica o stress ambiental sobre estes ecossistemas aquáticos. No caso do estuário do rio Mondego, além das actividades portuária, balnear, industrial e de exploração de recursos marinhos, a orizicultura surge como a activ...
Hydrodynamic modelling for Mondego estuary water quality management
Duarte, António A. L. Sampaio; Pinho, José L. S.; Pardal, Miguel A. C.; Neto, João M.; Vieira, J. M. Pereira; Santos, Fernando S.The south arm of Mondego estuary, located in the central western Atlantic coast of Portugal, is almost silted up in the upstream area. So, tides, wind and the tributary river Pranto discharges mostly drive the water circulation in this system. Annual fresh water inflow, regulated by precipitation and by sluice management practices, has a significant impact on flow velocity, salinity, N:P ratios and light extinc...
Hidrodynamics influence assessment on Mondego Estuary eutrophication process
Duarte, António A. L. Sampaio; Pinho, José L. S.; Pardal, Miguel A. C.; Neto, João M.; Vieira, J. M. Pereira; Santos, Fernando S.The south arm of Mondego estuary is stressing by an eutrophication process due to massive nutrient loading from urbanised areas and diffusive runoff from intensively agricultural areas. A sampling program was carried out at three benthic sample points and at three other sites (river Pranto sluice, Armazéns channel mouth and Gala bridge) for water column monitoring. Available field data analysis allows concludin...
Effect of residence times on river Mondego estuary eutrophication vulnerability
Duarte, António A. L. S.; Pinho, José L. S.; Pardal, Miguel A. C.; Vieira, José M. P.; Santos, Fernando S.The south arm of Mondego estuary, located in the central western Atlantic coast of Portugal, is almost silted up in the upstream area. So, the water circulation is mostly driven by tides and the tributary river Pranto discharges. Eutrophication has been taking place in this ecosystem during last twelve years, where macroalgae reach a luxuriant development covering a significant area of the intertidal muddy flat...
Effect of residence times on river Mondego estuary eutrophication vulnerability
Duarte, António A. L. Sampaio; Pinho, José L. S.; Pardal, Miguel A. C.; Vieira, J. M. Pereira; Santos, Fernando S.The south arm of Mondego estuary, located in the central western Atlantic coast of Portugal, is almost silted up in the upstream area. So, the water circulation is mostly driven by tides and the tributary river Pranto discharges. Eutrophication has been taking place in this ecosystem during last twelve years, where macroalgae reach a luxuriant development covering a significant area of the intertidal muddy flat...
Balanço de nutrientes no braço sul do estuário do rio Mondego
Duarte, António A. L. Sampaio; Vieira, J. M. Pereira; Santos, Fernando S.; Pardal, Miguel A. C.Na sequência de estudos realizados no domínio da análise de vulnerabilidade da costa litoral portuguesa, entendeu-se pertinente desenvolver um programa de investigação sobre o braço sul do estuário do rio Mondego visando, fundamentalmente, os seguintes aspectos: caracterização das marés, caudais fluviais e descargas de fontes poluidoras; modelação hidrodinâmica do sistema; avaliação do balanço anual de nutrient...
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