Carvalho T.M.,Agencia Portuguesa do Ambiente |
Fidelis T.,University of Aveiro
Land Use Policy | Year: 2013
The latest theories on the governance of water resources point to the need to adopt integrated approaches, allowing the mediation of conflict between public and private interests by building consensus to include the participation of stakeholders and civil society in formulating and implementing policies, thereby ensuring their legitimacy. Models of governance have particular relevance in the context of estuaries, because of the complexity associated with them. Estuaries are areas where valuable, highly sensitive and diverse natural systems coexist, which are frequently threatened by the numerous human activities concentrated there. They are also areas where several organizations overlap, with their own jurisdictions and management instruments and where there is a wide range of users with distinct interests. At a time when the Planos de Ordenamento de Estuários (POE) (Estuary Land Use and Management Plan), a new tool for water resource management and planning, are being drawn up in Portugal, this paper discusses the specificities of the new Portuguese estuary plans, as well as associated potentials and constraints to further understand how water resources and land use policies may effectively be integrated in estuary contexts. It critically analyses the Portuguese legal framework established for these plans, arguing that, in spite of the novelty of the newly defined legal measures to better plan and manage estuaries, implementation of its ambitious objectives requires a robust governance model for plan preparation and implementation. Taking into account the main institutional features of complex estuaries with various agencies, stakeholders and users, as well as relevant governance principles, this paper proposes a governance model capable of enriching the implementation of estuary plans by contributing to a stronger involvement of all stakeholders and users in the construction of the plan, allowing conciliation of interests and participation in decision-making, within a framework of collaborative governance. Whilst the paper focuses on the Portuguese Law, the approach adopted is also of interest to other countries to assessing estuary planning regulations and associated collaborative measures. © 2013 Elsevier Ltd.
Taborda R.,University of Lisbon |
de Andrade C.F.,University of Lisbon |
Silveira T.M.,University of Lisbon |
Freitas M.C.,University of Lisbon |
Pinto C.A.,Agencia Portuguesa do Ambiente
Comunicacoes Geologicas | Year: 2014
The longshore drift along the Caparica-Espichel coastal stretch was evaluated using several modelling strategies. Results show the need to adopt a strategy describing the feedback between coastline evolution and oceanographic forcing through the use of a shoreline evolution model. A sedimentary circulation model for this coastal stretch is proposed with a net northward transport along the entire domain. From the southern end up to Meco/Lagoa de Albufeira boundary, longshore drift progressively increases and is sustained by shoreline retreat. Further updrift the coastal system adopts an equilibrium shape with a constant net longshore drift. © 2014, LNEG – Laboratório Nacional de Geologia e Energia IP.
Diogo Z.,University of Lisbon |
Bastos A.,University of Lisbon |
Lira C.,University of Lisbon |
Taborda R.,University of Lisbon |
And 7 more authors.
Comunicacoes Geologicas | Year: 2014
Christina storm hit the Portuguese coast on January 2014 and was characterized by strong winds, high and long sea waves and intense rainfall. This work aims to characterize and evaluate the effects of the Christina storm on the morphology of cross-shore profiles describing the beaches of central western coast of Portugal. The storm lashed the Portuguese coast resulting generally in strong beach erosion and damage to coastal structures and facilities. However, results show that the erosion pattern and damages were not consistent across the study area. In about half of the surveyed profiles, the sand volume in the emerged section of the beach attained minimum values recorded in the 2011/2014 period. This behavior is consistent with the intensity of the event, considering the exceptional wave period. In contrast, some profiles indicate accretion that is interpreted in relation to local morphological and sediment supply constraints. © 2014 LNEG.
Varela A.R.,Catholic University of Portugal |
Varela A.R.,University of Porto |
Andre S.,Agencia Portuguesa do Ambiente |
Nunes O.C.,University of Porto |
Manaia C.M.,Catholic University of Portugal
Water Research | Year: 2014
The relationship between antimicrobial residues, antibiotic resistance prevalence and bacterial community composition in hospital effluent and in the receiving wastewater treatment plant was studied. Samples from hospital effluent, raw inflow and final effluent of the receiving wastewater treatment plant were characterized for amoxicillin and ciprofloxacin resistance prevalence, content of heavy metals and antimicrobial residues and bacterial community structure, based on 16S rRNA gene PCR-DGGE analysis. The concentration of fluoroquinolones, arsenic and mercury was in general higher in hospital effluent than in raw inflow, while the opposite was observed for tetracyclines, sulfonamides and penicillin G. The prevalence of ciprofloxacin resistance was significantly higher in hospital effluent than in raw inflow. The concentration of antimicrobial residues was observed to be significantly correlated with the prevalence of antibiotic resistant bacteria and with variations in the bacterial community. Hospital effluent was confirmed as a relevant, although not unique, source of antimicrobial residues and antibiotic resistant bacteria to the wastewater treatment plant. Moreover, given the high loads of antibiotic residues and antibiotic resistant bacteria that may occur in hospital effluents, these wastewater habitats may represent useful models to study and predict the impact of antibiotic residues on bacterial communities. © 2014 Elsevier Ltd.
Mota R.,National Laboratory for Civil Engineering |
Coimbra L.,National Laboratory for Civil Engineering |
Barroso M.,National Laboratory for Civil Engineering |
Dores R.,Empresa Geral Do Fomento S.A. |
Silva F.,Agencia Portuguesa do Ambiente
Near Surface Geoscience 2013 | Year: 2013
Landfills contain basal lining systems that include composite liners, among which a geomembrane (GM). The success of these systems depends mainly on the GM performance, which acts as the primary barrier to contaminants migration. GM performance is conditioned by the presence of holes, which represent preferential pathways for leachate migration. An equipment was developed to detect holes in geomembranes. It is based on the geophysical resistivity method and aims to overcome the main disadvantages of the existing methods for GM holes detection, mainly time spent to perform the tests and the associated high costs. Several prototypes were already developed and were tested at small scale in laboratory. The final version, which is the model for the equipment under construction, was already successfully tested at laboratory small scale pilot plant and in a large pilot plant at Laboratório Nacional de Engenharia Civil, I.P. (LNEC) campus. This paper presents the prototypes development and results so far obtained.