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New physical and biological evidence of lateral transport affecting dinoflagell...
García-Moreiras, Iria; Hatherly, Melissa; Zonneveld, Karin; Dubert, Jesus; Nolasco, Rita; Santos, Ana Isabel; Oliveira, Anabela; Moita, Teresantroduction The production of resting cysts is a key dispersal and survival strategy of many dinoflagellate species. However, little is known about the role of suspended cysts in the benthic nepheloid layer (BNL) in the initiation and decline of planktonic populations.Methods In September 2019, sampling of the dinoflagellate cyst community at different water depths in the water column and in the bottom sediment...
Decapod larvae distribution and species composition off the southern Portuguese...
Pochelon, Patricia N.; Pires, Rita F. T.; Dubert, Jesus; Nolasco, Rita; Santos, A. Miguel P.; Queiroga, Henrique; dos Santos, AntoninaFor decapod crustaceans, the larval phase is the main responsible for dispersal, given the direct emission from adult habitats into the water column. Circulation patterns and behavioural mechanisms control the dispersal distance and connectivity between different areas. Information on larval distribution and abundance is required to predict the size and location of breeding populations, and correctly manage mar...
Toward predicting Dinophysis blooms off NW Iberia: a decade of events
Moita, Maria Teresa; Pazos, Yolanda; Rocha, Carlos; Nolasco, Rita; Oliveira, Paulo B.Dinophysis acuminata and Dinophysis acuta are recurrent species off NW Iberia but their outbreaks occur under different conditions. A decade (2004-2013) of weekly data for each species at two sentinel stations located at the entrance of Rias de Aveiro-AV (NW Portugal, 40 degrees 38.6' N) and Pontevedra-PO (Galicia, Spain, 42 degrees 21.5' N), were used to investigate the regional synchronism and mesoscale diffe...
Oxygen in the Iberian margin: a modeling study
Reboreda, Rosa; Castro, Carmen G.; Álvarez-Salgado, Xosé A.; Nolasco, Rita; Cordeiro, Nuno G. F.; Queiroga, Henrique; Dubert, JesusHighly productive eastern boundary coastal upwelling areas provide interesting environments to study the physical–biological interactions that govern dissolved oxygen (O2) dynamics. The Iberian Upwelling System is located in the northern limit of the North East Atlantic upwelling region, along the Iberian margin off Portugal and Spain. It presents a marked seasonality in the hydrodynamics and it is under the in...
Seasonal cycle of plankton production in the Iberian margin based on a high res...
Reboreda, Rosa; Nolasco, Rita; Castro, Carmen G.; Álvarez-Salgado, Xosé A.; Cordeiro, Nuno G. F.; Queiroga, Henrique; Dubert, JesusThe seasonal variability of plankton in the entire Iberian margin and the adjacent oceanic region was simulated by applying a NPZD-type biogeochemical model coupled to a physical high resolution configuration of the 3D Regional Ocean Modeling System (ROMS). The NPZD model simulated the time and space evolution of nitrate, phytoplankton/chlorophyll, zooplankton and detritus. Model results were compared to remote...
Modeling the seasonal and interannual variability (2001-2010) of chlorophyll-a ...
Reboreda, Rosa; Cordeiro, Nuno G. F.; Nolasco, Rita; Castro, Carmen G.; Álvarez-Salgado, Xosé A.; Queiroga, Henrique; Dubert, JesusA modeling study of the seasonal and interannual variability of chlorophyll-a has been carried out for the period 2001-2010 along the Iberian shelf and adjacent ocean. A high resolution regional configuration of the three-dimensional Regional Ocean Modeling System (ROMS) has been used, coupled to a N2PZD2-type biogeochemical model. Chlorophyll-a concentration ([Chl]) model outputs were compared to regional obje...
Global climate models as forcing for regional ocean modeling: a sensitivity stu...
Pires, Ana Cordeiro; Nolasco, Rita; Rocha, Alfredo; Ramos, Alexandre M.; Dubert, JesusThis work evaluates the performance of several global climate models (GCMs) as forcing of a regional ocean model configuration centered in the Iberian Basin. The study is divided in two parts. First, the output of nine GCMs is analyzed based on the fields needed to force the ocean model (Regional Ocean Modelling System— ROMS). GCMs differ greatly between them and their performance depends on the field. In the seco...
A high-resolution modeling study of the Western Iberian Margin mean and seasona...
Nolasco, Rita; Pires, Ana Cordeiro; Cordeiro, Nuno; Le Cann, Bernard; Dubert, JesusThe mean seasonal hydrography and circulation of the Western Iberian Margin (WIM) are studied by means of a high-resolution configuration of the Regional Oceanic Modeling System. A comparison of 5-year model averages for January and July with climatological datasets shows a general good agreement in the reproduction of the mean water mass properties and hydrographic distribution. We find that there is a prevail...
Numerical modelling of the phytoplankton patterns in an upwelling event off the...
Rocha, Carlos; Cordeiro, Nuno; Nolasco, Rita; Dubert, JesúsAn extreme event in September 2007, presenting a strong upwelling core detaching from the Galician NW coast and extending towards west-northwest from the Cape Finisterre - Cape Ortegal zone, with the formation of several filaments and a consequent strong response in chlorophyll concentration values is analyzed. To do so, a NPZD biogeochemical module coupled to a ROMS_Agrif configuration is used. The model respo...
OOF3: A Python engine for automating regional and coastal ocean forecasts
Marta-Almeida, Martinho; Ruiz-Villarreal, Manuel; Otero, Pablo; Cobas, Marcos; Peliz, Álvaro; Nolasco, Rita; Cirano, Mauro; Pereira, JaniniAcesso restrito: Texto completo. p. 680-682.; Submitted by JURANDI DE SOUZA SILVA (jssufba@hotmail.com) on 2012-02-27T11:24:55Z No. of bitstreams: 1 __pdn.sciencedirect.com_....0-S1364815210003221-main.pdf: 73248 bytes, checksum: 879e919165524fafb302ab167c036a50 (MD5); Made available in DSpace on 2012-02-27T11:24:55Z (GMT). No. of bitstreams: 1 __pdn.sciencedirect.com_....0-S1364815210003221-main.pdf: 73248 byt...