Resultados de investigación

SESAME Cruise (29GD20080925) carried out on the Research Vessel García del Cid in 2008, Southern European Seas: Assessing and Modelling Ecosystem Changes (SESAME). to assess the current status of the Southern European Seas through an analysis of newly collected physical, chemical and biological data at basin scale for a better understanding and modeling of their pelagic system also in relation to global changes

PROMETEO-1 Cruise (29GD20080929) carried out on the Research Vessel García del Cid in 2008, Integrated Study of deep Canyons and Slopes of the Western MEDITERRANEAN: an essential habitat.To investigate the impact on the bathyal populations of meio-, macro- and megafauna, and in particular on the deep red shrimp Aristeus antennatus, of the events of massive transport of sediment and fresh organic matter towards the deep margin and basin associated to cold water cascading from the shelf, the implications of which have recently been described by Canals et al. (Nov. 2006) in Nature.The combination of abiotic and biotic factors make the canyons and deep slopes of the Western Mediterranean essential habitats in which occur well structured communities characterized by a clear faunal zonation and trophic web of low energetic level. This fragile equilibrium is highly vulnerable to anthropogenic and natural perturbations (Canal et al, 2006) focused by the submarine canyons.The investigated area has been the submarine Blanes Canyon.The sampling of benthic megafauna was carried out with both an Otter-Trawl Maireta System (OTMS) and an Agassiz trawl, over the same trawling lanes.Physical oceanographic data were obtained six mooring lines were deployed between 900 and 1500 m of water depth from November 2008 to November 2009 inside the Blanes Canyon and on the adjacent open slope to the south. Each mooring line was equipped with a Technicap PPS3/3 sequential sediment trap and an Aanderaa RCM-8/9 current meter placed 30 m above the bottom Temperature and salinity data were sampled using CTD SBE 911 casts performed over the mooring sites during the different oceanographic cruises

CASCADES-1 Cruise (29GD20081017) carried out on the Research Vessel García del Cid in 2008, Interaction between submarine cascades and deep ecosystems. CASCADES main objective is to study the processes of particle transport associated with the descent, in the form of underwater cascading , of dense waters formed in coastal environments, and at the same time, to evaluate in an interdisciplinary way the effects implications of this oceanographic phenomenon in ecosystems and deep living resources. To achieve this objective, it is necessary to record time series of oceanographic parameters in winter conditions (time when the underwater cascading) through the use of anchored instruments. This fact entails the need to request a minimum of two oceanographic campaigns (one to install the anchoring and another for its recovery). During the first days of the CASCADES 1 campaign operations will be carried out related to the anchoring of instruments to ensure the registration of parameters oceanographic,three hydrographic transects will be carried out a CTD probe following a direction parallel to the orientation of the canyon, on the flank north, on the axis and on the south flank, and two perpendicular to the canyon. The stations will be separated one nautical mile from each other to characterize the structure in detail hydrographic and nephelide in the head of the submarine canyon and in the continental slope adjacent.also sediment samples will be collected

SCAN-2008 Cruise (29HE20080125) carried out on the Research Vessel Hespérides in 2008, SCAN-DRAKE : Evolution of ocean basins, paleoceanography and global change, Weddell and Scotia Seas (Antarctica). It is a seismic project to be carried out in the Scotia Sea (North Elephant Island) and North of the Wedell Sea (between the South Orkney Islands and the Islands, using multibeam bathymetry, dredged samples and seismic reflection

ESPOR Cruise (29HE20081101) carried out on the Research Vessel Hespérides in 2008, ESPOR( ESpaña-PORtugal) Joint Scientific Study of Spain and Portugal for the Extension of the Continental Shelf in the margin of Galicia Bank, in accordance with Article 76 of the United Nations Convention on the Law of the Sea. Ocean Bottom Sismograph deployment (OBS), parametric probe TOPAS and gravimetry, EM120 multibeam echosounder

Peer reviewed

The item is made of 2 files, of which 1 is the dataset and the other includes a small description of the measured variables.-- Dataset contributed to the Project Carbochange, This dataset gathers discrete measurements of CO2 (pH and alkalinity) and hydrographic variables (salinity, temperature, dissolved oxygen, nitrate, phosphate and silicate) obtained during the cruise P3A22008. carried out in the Strait of Gibraltar from 6 to 12 October 2008, pH was measured spectrophotometrically following the Clayton and Byrne (1993). This method consists on adding a dye solution to the seawater sample, so that the ratio between two absorbances at two different wavelengths is proportional to the sample pH. Alkalinity was measured using an automatic potentiometric titrator Titrando 794 Metrohm, with a Metrohm 6.0232.100 combination glass electrode and a Pt-1000 probe for temperature measurement following the methodology given by Pérez and Fraga (1987). Dissolved oxygen was analyzed following the widely applied Winkler method. Determinations of nitrate, phosphate and silicate were carried out following methods described by Hansen and Grassoff (1983) Salinity and Temperature were recorded with a CTD probe, Proyecto CARBOOCEAN (511176GOCE), y proyectos del Ministerio de Ciencia e Innovación (CTM2005/01091-MAR y CTM2008-05680-C02-01), Discrete_measurement_2008.csv.-- Metadata_discrete_measurements_P3A2.xlsx.-- Readme_Discret_measurement_2008.txt, Peer reviewed

The item is made of 2 files, of which 1 is the dataset and the other include a small description of the measured variables.-- Dataset contributed to the Project Carbochange, This dataset gathers discrete measurements of CO2 (pH and alkalinity) and hydrographic variables (salinity, temperature, dissolved oxygen, nitrate, phosphate and silicate) obtained during the cruise OVIDE 2008 carried out from 6 June to 11 July 2008. pH was measured spectrophotometrically following the Clayton and Byrne (1993). This method consists on adding a dye solution to the seawater sample, so that the ratio between two absorbances at two different wavelengths is proportional to the sample pH. Alkalinity was measured using an automatic potentiometric titrator Titrando 809 Metrohm, with a Metrohm 6.0232.100 combination glass electrode and a Pt-1000 probe for temperature measurement following the methodology given by Pérez and Fraga (1987). Dissolved oxygen was analyzed following the widely applied Winkler method. Determinations of nitrate, phosphate and silicate were carried out following methods described by Hansen and Grassoff (1983) Salinity and Temperature were recorded with a CTD probe, French OVIDE Project supported by CNRS, and CARBOOCEAN (511176GOCE), Ovide_2008.exc.csv.-- Metadata_Ovide_2008.xls.-- Readme_Ovide_2008.txt, Peer reviewed

This dataset gives information on fish eggs and larval abundances at different layers of the water column in the Central North Atlantic in November 2008. This research explores the diel vertical distribution of fish early stages in relation to oceanographic features. It was observed that larvae of the majority of species showed shallower distributions during the day time and reached deeper layers at night. However, the vertical stratification and depth of the thermocline largely determined the overall distribution range, This research was funded by project "MEMORIA OCEáNICA DEL CLIMA: MECANISMOS Y RUTAS DE FORMACIóN DE AGUAS SUPERFICIALES EN EL ATLáNTICO ECUATORIAL". CANOA. CTM2008-06438-C02-01, Peer reviewed

This dataset gives information on fish eggs and larval diversity and abundances, integrated through the water column, in the Central North Atlantic in November 2008. This investigation showed the associations between larval fish assemblages and oceanographic conditions in the upper ocean (top 200 m). The larvae of different myctophid species serve as indicators of the water masses. The alongslope offshore convergence of North Atlantic Central Water and South Atlantic Central Water takes place at the Cape Verde Frontal Zone, representing a region of extensive offshore export for larvae of coastal species, mainly Sardina pilchardus and Engraulis encrasicolus, "Memoria oceánica del clima: mecanismos y rutas de formación de aguas superficiales en el Atlántico Ecuatorial" (CANOA). CTM2008-06438-C02-01, Peer reviewed