Vertical profiles of environmental parameters measured on discrete water samples collected with Niskin bottles at station TARA_037 during the Tara Oceans expedition 2009-2013

The Tara Oceans Expedition (2009-2013) was a global survey of ocean ecosystems aboard the Sailing Vessel Tara. It carried out extensive measurements of evironmental conditions and collected plankton (viruses, bacteria, protists and metazoans) for later analysis using modern sequencing and state-of-the-art imaging technologies. Tara Oceans Data are particularly suited to study the genetic, morphological and functional diversity of plankton. The present data set includes properties of seawater, particulate matter and dissolved matter that were measured from discrete water samples collected with Niskin bottles during the 2009-2013 Tara Oceans expedition. Properties include pigment concentrations from HPLC analysis (10 depths per vertical profile, 25 pigments per depth), the carbonate system (Surface and 400m; pH (total scale), CO2, pCO2, fCO2, HCO3, CO3, Total alkalinity, Total carbon, OmegaAragonite, OmegaCalcite, and dosage Flags), nutrients (10 depths per vertical profile; NO2, PO4, N02/NO3, SI, quality Flags), DOC, CDOM, and dissolved oxygen isotopes. The Service National d'Analyse des Paramètres Océaniques du CO2, at the Université Pierre et Marie Curie, determined CT and AT potentiometrically. More than 200 vertical profiles of these properties were made across the world ocean. DOC, CDOM and dissolved oxygen isotopes are available only for the Arctic Ocean and Arctic Seas (2013).

Investigations on sediment core Co1010 from Rauer Group, Antarctica

The Rauer Group is an archipelago in Prydz Bay, East Antarctica. The ice-free islands and the surrounding shallow marine areas provide valuable archives for the reconstruction of the late Pleistocene and Holocene environmental and climatic history of the region. Two sediment records from two marine inlets of Rauer Group have been studied for their sedimentological, geochemical, and biological characteristics. Radiocarbon ages from one of the inlets indicate ice-free conditions within the last glacial cycle, probably during the second half of Marine Isotope Stage 3. Subsequent ice sheet coverage of Rauer Group during the Last Glacial Maxiumum (LGM) can be inferred from a till layer recovered in one of the basins. The inlets became ice-free prior to 11,200 cal yr BP, when biogenic sedimentation started. Deglacial processes in the catchments, however, influenced the inlets until ~9200 cal. yr BP as evidenced by the input of minerogenic material. Marine productivity under relatively open water conditions indicates an early Holocene climate optimum until 8200 cal. yr BP, which is followed by a cooler period with increased sea ice. Warmer conditions are inferred for the mid Holocene, when both basins experienced an input of freshwater between ~5700-3500 cal. yr BP, probably due to ice-sheet melting and increased precipitation on the islands. Neoglacial cooling in the late Holocene since c. 3500 cal yr BP is reflected by an increase in sea ice in both inlets.

Seawater carbonate chemistry and growth rate during experiments with phylotypes of Symbiodinium (Dinophyceae), 2011

We investigated the effect of elevated partial pressure of CO2 (pCO2) on the photosynthesis and growth of four phylotypes (ITS2 types A1, A13, A2, and B1) from the genus Symbiodinium, a diverse dinoflagellate group that is important, both free-living and in symbiosis, for the viability of cnidarians and is thus a potentially important model dinoflagellate group. The response of Symbiodinium to an elevated pCO2 was phylotype-specific. Phylotypes A1 and B1 were largely unaffected by a doubling in pCO2 in contrast, the growth rate of A13 and the photosynthetic capacity of A2 both increased by ~ 60%. In no case was there an effect of ocean acidification (OA) upon respiration (dark- or light-dependent) for any of the phylotypes examined. Our observations suggest that OA might preferentially select among free-living populations of Symbiodinium, with implications for future symbioses that rely on algal acquisition from the environment (i.e., horizontal transmission). Furthermore, the carbon environment within the host could differentially affect the physiology of different Symbiodinium phylotypes. The range of responses we observed also highlights that the choice of species is an important consideration in OA research and that further investigation across phylogenetic diversity, for both the direction of effect and the underlying mechanism(s) involved, is warranted.

An evaluation of surface micro- and mesoplastic pollution in pelagic ecosystems of the Western Mediterranean Sea

This study examines the distribution, abundance and characteristics of surface micro- and mesoplastic debris in the Western Mediterranean Sea. 41 samples were collected in 2011 (summer) and 2012 (summer). Results, firstly, revealed that micro- (<5mm) and mesoplastic debris were widely and uniformly distributed in this area with average concentrations of 130,000 parts/km(2) and 5700 parts/km(2), respectively. Importantly, a strong correlation between micro- and mesoplastic concentrations was identified. Secondly, a classification based on the shape and appearance of microplastics indicated the predominant presence of fragments (73 %) followed by thin films (14 %). Thirdly, the average mass ratio of microplastic to dry organic matter has been measured at 0.5, revealing a significant presence of microplastics in comparison to plankton. Finally, a correction method was applied in order to correct wind mixing effect on microplastics' vertical distribution. This data allows for a comprehensive view, for the first time, of the spatial distribution and nature of plastic debris in the Western Mediterranean Sea.

O enquadramento da disciplina de Canto no Ensino Artístico Especializado em Portugal desde o século XVIII até à atualidade

Este trabalho tem como principal objetivo a investigação e reflexão do ensino da música, designadamente do ensino de Canto, analisando não apenas a prática vocal, mas primordialmente a experiência pedagógica praticada ao longo dos últimos anos. Num primeiro momento, é apresentada uma contextualização histórica do ensino da música em Portugal, em meados do século XVIII. Este percurso pretende ainda expor a evolução do ensino musical desde a criação do primeiro Conservatório de Música de Lisboa em 1835 até à atualidade, identificando as especificidades pedagógicas mais recentes no que respeita à disciplina de Canto. Em segundo lugar, são identificados os aspetos progressivos e regressivos do ensino de Canto, através da análise de todos os diplomas legais aplicáveis. Relativamente à apreciação evolutiva desta disciplina, o presente estudo centra-se na Escola Artística do Conservatório de Música de Coimbra (EACMC) e nos seus 30 anos de existência. Neste sentido, são mencionadas as principais causas de sucesso e/ou insucesso da referida disciplina, apresentando algumas soluções para os problemas identificados.

UN CONCEPTO FUNDAMENTAL: LA ORGANIZACION DEL ESPACIO

No presenta resumen este articulo.

O ROMANCE HISTÓRICO E A PROBLEMÁTICA DO DISTANCIAMENTO TEMPORAL ENTRE O FATO NARRADO E O PERÍODO DE VIDA DO AUTOR

The article discusses the great controversy over the time gap between the narrated fact and the author’s life period in the concept of the historical romance. For many literary critics, perhaps most of them, it is necessary that the action of the novel, or at least most of it, happens in a period of time before the lifetime of the novelist, and for others, this criteria is too rigid and outdated. Therefore and taking into consideration that George Lukacs, the first theorist of historical novel, placed Balzac in the group of novelists as one of the followers of Walter Scott’s techniques, stating that the French novelist “created a superior type and so far unknown historical novel, which is a representation of this as history, this article presents a reflection on the controversy, checking whether there is really need that the temporal distance has a greater relevance than the dialogue with history and its representation in the characterization of a historical novel.