59 documents found, page 1 of 6
Deployment characterization of a floatable tidal energy converter on a tidal ch...
Pacheco, André; G-Gorbeña, Eduardo; Plomaritis, Haris; Garel, Erwan; Gonçalves, J. M. S.; Bentes, L.; Monteiro, P.; Afonso, Carlos; Oliveira, FredericoThis paper presents the results of a pilot experiment with an existing tidal energy converter (TEC), Evopod 1 kW floatable prototype, in a real test case scenario (Faro Channel, Ria Formosa, Portugal). A baseline marine geophysical, hydrodynamic and ecological study based on the experience collected on the test site is presented. The collected data was used to validate a hydro-morphodynamic model, allowing the ...
The EU landing obligation and European small-scale fisheries: What are the odds...
Veiga, Pedro; Pita, C.; Rangel, Mafalda; Gonçalves, J. M. S.; Campos, Aida; Fernandes, P. G.; Sala, Antonello; Virgili, M.; Lucchetti, A.; Brcic, J.A landing obligation was formally implemented in the European Union (EU) for the first time, as part of the recent reform of the EU Common Fisheries Policy (CFP). Given the reasonable success of the landing obligation in some countries such as the Faroe Islands, Iceland and Norway, this policy is seen as a viable approach to tackle the long-recognized discarding problem in EU waters. However, there has been som...
Transboundary dimensions of marine spatial planning: Fostering inter-jurisdicti...
Jay, Stephen; Alves, Fátima L.; O'Mahony, Cathal; Gomez, Maria; Rooney, Aoibheann; Almodovar, Margarida; Gee, Kira; Suárez de Vivero, Juan LuisThere is broad agreement that marine spatial planning (MSP) should incorporate transboundary considerations, reflecting the cross-border nature of marine and coastal ecosystem dynamics and maritime resources and activities. This is recognised in the European Union's recent legislation on MSP, and experience in transboundary approaches is developing through official processes and pilot studies.
A well-kept treasure at depth: precious red coral rediscovered in Atlantic deep...
Boavida, Joana; Paulo, Diogo; Aurelle, Didier; ARNAUD-HAOND, Sophie; Marschal, Christian; Reed, John; Gonçalves, J. M. S.; Serrão, EsterThe highly valuable red coral Corallium rubrum is listed in several Mediterranean Conventions for species protection and management since the 1980s. Yet, the lack of data about its Atlantic distribution has hindered its protection there. This culminated in the recent discovery of poaching activities harvesting tens of kg of coral per day from deep rocky reefs off SW Portugal. Red coral was irregularly exploited...
Eco-touristic snorkelling routes at Marinha beach (Algarve): environmental educ...
Rangel, M. O.; Pita, C. B.; Gonçalves, J. M. S.; Oliveira, F.; Costa, C.; Erzini, K.The use of natural areas for underwater coastal marine activities such as snorkelling is growing, but the amount of ecological and socioeconomic data on these activities is scarce and relates mainly to coral reef areas. Three underwater self-guided routes were designed at Marinha Beach (Algarve, Portugal), based on scientific information, with in situ interpretation and guidance, as a way to enhance biodiversit...
EUNIS habitat's thresholds for the Western coast of the Iberian Peninsula — A P...
Monteiro, Pedro; Bentes, L.; Oliveira, Frederico; Afonso, Carlos; Rangel, Mafalda; Gonçalves, J. M. S.The European Nature Information System (EUNIS) has been implemented for the establishment of a marine European habitats inventory. Its hierarchical classification is defined and relies on environmental variables which primarily constrain biological communities (e.g. substrate types, sea energy level, depth and light penetration). The EUNIS habitat classification scheme relies on thresholds (e.g. fraction of lig...
Comparison of small remotely operated vehicles and diver-operated video of circ...
Boavida, Joana; Assis, J.; Reed, John; Serrão, Ester; Gonçalves, J. M. S.Underwater video transect methods using small remotely operated vehicles (ROVs) and diveroperated video (DOV) are commonly used in benthic biodiversity assessments. Constraints posed by deeper waters have made surveys of the circalittoral zone ([30 m depth), a particularly challenging problem. Here we compare benthic diversity metrics and cluster analyses obtained with ROV and DOV between 45 and 65 m depth off ...
Marine litter in the upper São Vicente submarine canyon (SW Portugal): abundanc...
Oliveira, Frederico; Monteiro, Pedro; Bentes, Luis; Sales Henriques, Nuno; Aguilar, Ricardo; Gonçalves, J. M. S.Marine litter has become a worldwide environmental problem, tainting all ocean habitats. The abundance, distribution and composition of litter and its interactions with fauna were evaluated in the upper S. Vicente canyon using video images from 3 remote operated vehicle exploratory dives. Litter was present in all dives and the abundance was as high as 3.31 items100m(-1). Mean abundance of litter over rock bott...
Broad-scale mapping of seafloor habitats in the north-east Atlantic using exist...
Vasquez, Mickaël; Mata Chacón, D.; Tempera, Fernando; O'Keeffe, Eimear; Galparsoro, Ibon; Sanz Alonso, J. L.; Gonçalves, J. M. S.; Bentes, L.If marine management policies and actions are to achieve long-term sustainable use and management of the marine environment and its resources, they need to be informed by data giving the spatial distribution of seafloor habitats over large areas. Broad-scale seafloor habitat mapping is an approachwhich has the benefit of producing maps covering large extents at a reasonable cost. This approach was first investi...
Lost fishing gear and litter at Gorringe Bank (NE Atlantic)
Vieira, Rui P.; Raposo, Isabel P.; Sobral, Paula; Gonçalves, J. M. S.; Bell, Katherine L. C.; Cunha, Marina R.Studies concerning marine litter have received great attention over the last several years by the scientific community mainly due to their ecological and economic impacts in marine ecosystems, from coastal waters to the deep ocean seafloor. The distribution, type and abundance of marine litter in Ormonde and Gettysburg, the two seamounts of Gorringe Bank, were analyzed from photo and video imagery obtained duri...