23 documents found, page 1 of 3
Evaluation of earth system models outputs over the continental Portuguese coast...
Pereira, Humberto; Picado, Ana; Sousa, Magda C.; Alvarez, Ines; Dias, João M.In the last decades, climate change has been accelerating, affecting, directly and indirectly, the environment, animal habitats, and daily human life. Earth System Models (ESMs) are valuable tools for studying these impacts, and their performance over coastal regions is critical for understanding how physical and biogeochemical processes are evolving through time and how they may change in the future. The conti...
Assessment of habitat suitability for common cockles in the Ria the Aveiro Lago...
Matos, Fábio L.; Vaz, Nuno; Picado, Ana; Dias, João M.; Maia, Francisco; Gaspar, Miguel B.; Magalhães, LuísaThe common cockle Cerastoderma edule is a widespread bivalve species inhabiting estuarine systems across the North East Atlantic, where it provides several ecosystem services, and represents a valuable fishery resource for local economies. However, anthropogenic pressure and more frequent extreme weather events threaten the resilience of the species. Spatially explicit information on species distribution is cri...
Assessment of habitat suitability for common cockles in the Ria the Aveiro Lago...
Matos, Fábio L.; Vaz, Nuno; Picado, Ana; Dias, João M.; Maia, Francisco; Gaspar, Miguel; Magalhães, LuísaThe common cockle Cerastoderma edule is a widespread bivalve species inhabiting estuarine systems across the North East Atlantic, where it provides several ecosystem services, and represents a valuable fishery resource for local economies. However, anthropogenic pressure and more frequent extreme weather events threaten the resilience of the species. Spatially explicit information on species distribution is cri...
Tide-surge interaction in Ria de Aveiro lagoon and its influence in local inund...
Pinheiro, João P.; Lopes, Carina L.; Ribeiro, Américo S.; Sousa, Magda C.; Dias, João M.Several problems related with coastal flooding depend on tidal levels, rise in sea level induced by meteorological effects and their nonlinear interaction. The latter is particularly meaningful in coastal lagoons and estuaries since it is strongly dependent on shallow water processes. This work aims to understand the role of tide-surge interaction in local inundation patterns of Ria de Aveiro lagoon and thus pr...
Functional resilience of PSII, vertical distribution and ecosystem-level estima...
Frankenbach, Silja; Azevedo, Andreina A.; Reis, Vanessa; Dias, Diana; Vaz, Leandro; Dias, João M.; Serôdio, JoãoMost studies on sediment-inhabiting microphytobenthos are based on the biomass present on the surface layers of intertidal flats. However, large amounts of microalgal biomass are known to exist below the surface. This study tested the role of subsurface microalgal biomass as a potential source of photosynthetically active cells for the biofilm on the surface. The resilience of buried cells was evaluated by expo...
Evaluation of long-term estuarine vegetation changes through Landsat imagery
Lopes, Carina L.; Mendes, Renato; Caçador, Isabel; Dias, João M.Salt marshes support estuarine biodiversity and provide ecosystem services; however, their general decay is being observed worldwide, in large part due to land reclamation. Accordingly, there is a growing concern about salt marsh preservation status having in mind the promotion of effective management decisions towards their conservation and restoration. Satellite imagery offers the opportunity to monitor land ...
Tidal dynamics in a changing lagoon: flooding or not flooding the marginal regions
Lopes, Carina L.; Dias, João M.Coastal lagoons are low-lying systems under permanent changes motivated by natural and anthropogenic factors. Ria de Aveiro is such an example with its margins currently threatened by the advance of the lagoonal waters recorded during the last decades. This work aims to study the tidal modifications found between 1987 and 2012 in this lagoon, motivated by the main channels deepening which induce higher inland t...
Assessment of flood hazard during extreme sea levels in a tidally dominated lagoon
Lopes, Carina L.; Dias, João M.The inundation of coastal regions is recognized as a major threat to people, livelihoods, and the ecosystem health. The assessment of the magnitude of flooding drivers and the flood extension mapping are essential to avoid and reduce the adverse impacts of floods. Attending these issues, the present study aims to assess marine-induced inundation in Ria de Aveiro coastal lagoon under extreme sea levels induced b...
Development of an oil spill hazard scenarios database for risk assessment
Boer, Sérgio den; Azevedo, Alberto; Vaz, Leandro; Costa, Ricardo; Fortunato, André B.; Oliveira, Anabela; Tomás, Luís M.; Dias, João M.The occurrence of oil spills in coastal regions may have catastrophic consequences on the environment and severe socio-economic impacts. This work presents a new methodology to evaluate the risk associated with oil spills in coastal zones and estuaries, and illustrates its application in a coastal lagoon (Ria de Aveiro, Portugal). A ranked list of the hydrodynamic scenarios under which oil spills are most likel...
Influence of climate change on the Ria de Aveiro littoral: adaptation strategie...
Dias, João M.; Lopes, Carina L.; Coelho, Carlos; Pereira, Carla; Alves, Fátima L.; Sousa, Lisa P.; Antunes, Inês C.; Fernandes, Maria da LuzFloods and shoreline retreat in coastal areas threaten many millions of people across Europe. Moreover, it is agreed that climate change can amplify the magnitude and frequency of flooding events and accelerate the shoreline retreat. The main goal of this work is to assess flood and shoreline retreat risk, and define adaptation strategies under present conditions and future climate change scenarios on the Ria d...