A Ria Formosa é um sistema lagunar localizado no Sul de Portugal, sendo um ecossistema de elevada produtividade biológica e diversidade ecológica. A caracterização dos padrões de circulação e de transporte na Ria Formosa, em particular as trocas com o oceano adjacente através das barras, a influência das marés e de outros forçamentos ambientais, são essenciais para a compreensão da dinâmica deste ecossistema. O...
Sao Luis or Ancao Inlet is the most western of the six inlets of the Ria Formosa lagoon, in southern Portugal. This inlet contributes relatively little to the water volume exchange over a tidal cycle (similar to 10%). Temperature, salinity, pH, dissolved oxygen, and chlorophyll a and nutrient concentrations were measured hourly at the surface, at an intermediate level, and near the bottom over a complete spring...
A integração em psicoterapia tem sido crescente e estudada em termos da sua prevalência em Portugal. Contudo, pouco se sabe acerca do tipo e forma de integração realizada pelos psicoterapeutas portugueses. O presente estudo procurou explorar e descrever a forma como os psicoterapeutas integram intervenções de diversos modelos psicoterapêuticos. O seu objectivo geral foi investigar se a integração era feita de f...
This study aims at understanding the fecal contamination behavior in a small coastal stream (Aljezur, Portugal), which has significant economic and ecological values. Like in most small coastal systems, circulation and water renewal in the Aljezur stream exhibit a strong variability due to their dependence on tides, waves, intermittent river flows, and a highly variable morphology. Hence, the problem was approa...
Fecal coliforms and fecal enterococci are used as indicators of enteric pathogenic organisms in aquatic environments, including bathing waters. There, sewage effluents, agricultural runoff and wildlife are important sources of such enterobacteria. After being discharged into the water their numbers decrease with time due to sedimentation, dilution and death. While solar UV-irradiation is believed to be the majo...
As zonas terminais das ribeiras costeiras, como a Ribeira de Aljezur, constituem sistemas estuarinos e lagunares de elevada complexidade, por estarem sujeitos a rápidas alterações morfológicas das suas embocaduras. A Ribeira de Aljezur insere-se no litoral do Parque Natural do Sudoeste Alentejano e Costa Vicentina de Portugal e desagua na Praia da Amoreira. A qualidade da água desta ribeira, no seu percurso até...
The European Water Framework Directive requires that surface water bodies (both fresh and saline) reach a good ecological status by 2015. Dissolved oxygen is one of the indicators for the evaluation of the quality of water bodies, because it is essential for the aquatic community. Therefore, integrated tools that allow the study of the oxygen dynamics are useful to support the sustainable management of these wa...
Lead is a natural component of aquatic ecosystems with no known biological role and is highly toxic. Its toxicity stems from its ability to mimic biologically important metals and to produce membrane damage through lipid peroxidation (LPO). Most lead poisoning symptoms are thought to occur by interfering with an essential enzyme, delta-aminolevulinic acid dehydratase (ALAD), the activity of which is markedly in...