9 documents found, page 1 of 1
Establishing a governance threshold in small-scale fisheries to achieve sustain...
Aguión, A.; Ojea, E.; Garcia-Flórez, L.; Cruz, T.; Garmendia, J.M.; Davoult, D.; Queiroga, H.; Rivera, A.; Acuña, J.L.; Macho, G.The lack of effective governance is a major concern in small-scale fisheries. The implementation of governance that encompasses the three pillars of sustainability (social, economic, and ecological) is still a worldwide challenge. We examined nine stalked barnacle fisheries (Pollicipes pollicipes) across Southwest Europe to better understand the relationship between governance elements and sustainability. Our r...
Coping with poachers in European stalked barnacle fisheries: Insights from a st...
Geiger, K.; Rivera, A.; Álvarez, J.; Arrontes, J.; Borrell, Y.J.; Cruz, T.; Davoult, D.; Dubert, J.; Feis, M.; Fernandes, J.N.; Fernández, C.In January 2020, a stakeholder workshop was organized as a knowledge sharing strategy among European stalked barnacle fisheries. Management of this fishery differs greatly among regions and ranges from less organized and governed at large scales (>100 km, coasts of SW Portugal and Brittany in France) to highly participatory systems which are co-managed at small spatial scales (10′s km and less, Galicia and Astu...
Biophysical modelling of larval dispersal and population connectivity of a stal...
Nolasco, R.; Dubert, J.; Acuña, J.L.; Aguión, A.; Cruz, T.; Fernandes, J.N.; Geiger, K.J.; Jacinto, D.; Macho, G.; Mateus, D.; Rivera, A.; Román, S.Numerical biophysical models are a standard methodology used to provide estimates of larval dispersal and population connectivity for marine species with a bi-phasic life cycle. How- ever, confidence on biophysical models, tested by confronting model estimates with empirical evi- dence, is seldomly assessed. We compared time-series estimates of larval supply of the stalked barnacle Pollicipes pollicipes to rock...
Caracterização Sinóptica dos Gradientes nos Canais da Ria de Aveiro. Parte II: ...
Rodrigues, M.; Dias, J. M.; Leandro, S.; Morgado, F.; Cunha, A.; Almeida, A.; Oliveira, A.; Queiroga, H.Os gradientes ecológicos nos estuários estão associados a gradientes de salinidade, temperatura e outras variáveis abióticas, apresentando, por isso, uma variabilidade espacial e temporal importante. Neste estudo de caracterização sinóptica da Ria de Aveiro pretendeu-se caracterizar a variabilidade espacial e sazonal dos gradientes físicos (salinidade e temperatura, Parte I) e dos gradientes ecológicos (Parte I...
Modelação Ecológica do Ecossistema Planctónico da Ria de Aveiro
Rodrigues, M.; Oliveira, A.; Queiroga, H.; Brotas, V.; Fortunato, A. B.; Zhang, Y.Os modelos numéricos, devidamente validados com dados, constituem uma ferramenta atractiva para o apoio à gestão da qualidade da água e do bom estado ecológico em estuários e zonas costeiras. Com este propósito desenvolveu-se um modelo acoplado hidrodinâmicoecológico tridimensional (ECO-SELFE), o qual foi aplicado e validado na Ria de Aveiro para diferentes escalas espácio-temporais. Este modelo permite simular...
Shelf and estuarine transport mechanisms affecting the supply of competent larv...
Olaguer-Feliú, A. O.; Flores, A. A. V.; Queiroga, H.; González-Gordillo, J.Supply of competent larvae to the benthic habitat is a major determinant of population dynamics in coastal and estuarine invertebrates with an indirect life cycle. Larval delivery may depend not only on physical transport mechanisms, but also on larval behavior and physiological progress to the competent stage. Yet, the combined analysis of such factors has seldom been attempted. We used time-series analyses to...
Dynamic modeling of dissolved oxygen in the Aljezur coastal stream
Rodrigues, M.; Oliveira, A.; Queiroga, H.; Guerreiro, M.; Fortunato, A. B.; Cravo, A.; Freitas, M. C.; Menaia, J.; Dodkins, I.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...
Three-dimensional modeling of the lower trophic levels in the Ria de Aveiro (Po...
Rodrigues, M.; Oliveira, A.; Queiroga, H.; Fortunato, A. B.; Zhang, Y. J.Thewater and the ecosystem dynamics of the Ria de Aveiro, a shallow, multi-branch lagoon located on the northwest coast of Portugal, are simulated using a newfully coupled 3Dmodeling system. This model couples the hydrodynamic model SELFE (semi-implicit Eulerian-Lagrangian finite element) and an ecological model extended from EcoSim 2.0 to represent zooplankton dynamics. The model application is based on an uns...
Integrating a circulation model and an ecological model to simulate the dynamic...
Rodrigues, M.; Oliveira, A.; Queiroga, H.; Zhang, Y.; Fortunato, A. B.; Baptista, A. M.Zooplankton plays a fundamental role in the estuarine food web. Thus, understanding the factors that affect the distribution of estuarine zooplankton is of major concern for the management of estuaries. An integrated modeling approach, coupling a hydrodynamics and an ecological model, is presented here to simulate the threedimensional dynamics of zooplankton. The hydrodynamics is computed with SELFE, a 3D baroc...