El uso de las TIC en los centros superiores de música: un análisis desde la perspectiva del profesorado, del alumnado y de los recursos de las webs institucionales

Programa de doctorado: Formación del Profesorado

Fomento de la lectura y Web 2.0 en la Biblioteca Universitaria de Las Palmas de Gran Canaria

La Biblioteca Universitaria de Las Palmas de Gran Canaria ha tomado parte activa en la promoción de la lectura entre sus comunidades de usuarios. Para conseguir este objetivo se han adquirido colecciones de literatura de ocio, tanto en formato físico como electrónico, y se han comenzado a utilizar herramientas 2.0, fundamentalmente los blogs para dar a conocer novedades literarias y actividades de la biblioteca relacionadas con el fomento de la lectura. Pero se ha ido más allá, y se han creado una serie de proyectos más ambiciosos que permiten una mayor participación de los usuarios. Estamos ante una Biblioteca 2.0. donde se pueden compartir contenidos, opiniones, conocimientos, valoraciones, etc. Es el caso de sitios webs, opac social y otros como facebook, tuenti, twitter, wikipedia, canal youtube, todas ellas vías descritas en esta comunicación con el fin de promocionar el fondo bibliográfico y la lectura en general.

Ecology of an uncultured heterotrophic flagellate lineage: MAST-4

Programa de oceanografía

Astaxanthin determination in marine biological samples : an overview

Máster en Oceanografía

Exploring respiration and respiratory electron transport system (ETS) in Ulva spp.

[ES] Respiration is a key ecological index. For either individuals or communities, it can be use to assess carbon and energy, demand and expenditure as well as carbon flow rates through food webs. When combined with productivity measurements it can establish the level of metabolic balance. When combined with measurements of respiratory capacity, it can indicate physiological state. Here, we report pilot studies the metabolism of the green algae, Ulva rotundata that inhabits intertidal pools of Gran Canaria. As a starting point we used the electron transport system (ETS) to differentiate between different growing conditions in the natural environment. We suspected different levels of stress associated with these conditions and looked for the influence of this stress in the ETS measurements. This technique has been successfully applied to study bacteria, phytoplankton and zooplankton in the ocean, but it has not been used to study sessile marine macroalgae. These neritic and littoral macrophytes have major ecological and industrial importance, yet little is known about their respiratory physiology. Such knowledge would strengthen our understanding of the resources of the coastal ocean and facilitate its development and best use. Here, we modified the ETS methodology for Ulva rotundata. With this modified ETS assay we investigated the capacity of Ulva to resist anoxia. We measured respiration with optodes (Fibox 4, Presens) in the dark to the point of oxygen exhaustion and through 24 h of anoxia. Then we exposed the Ulva to light and followed the oxygen increase due to photosynthesis. We discuss here the capacity of Ulva to survive during anoxia.

Significance of non‐sinking particulate organic carbon and dark CO2 fixation to heterotrophic carbon demand in the mesopelagic northeast Atlantic

[EN] It is generally assumed that sinking particulate organic carbon (POC) constitutes the main source of organic carbon supply to the deep ocean's food webs. However, a major discrepancy between the rates of sinking POC supply (collected with sediment traps) and the prokaryotic organic carbon demand (the total amount of carbon required to sustain the heterotrophic metabolism of the prokaryotes; i.e., production plus respiration, PCD) of deep-water communities has been consistently reported for the dark realm of the global ocean. While the amount of sinking POC flux declines exponentially with depth, the concentration of suspended, buoyant non-sinking POC (nsPOC; obtained with oceanographic bottles) exhibits only small variations with depth in the (sub)tropical Northeast Atlantic. Based on available data for the North Atlantic we show here that the sinking POC flux would contribute only 4–12% of the PCD in the mesopelagic realm (depending on the primary production rate in surface waters). The amount of nsPOC potentially available to heterotrophic prokaryotes in the mesopelagic realm can be partly replenished by dark dissolved inorganic carbon fixation contributing between 12% to 72% to the PCD daily. Taken together, there is evidence that the mesopelagic microheterotrophic biota is more dependent on the nsPOC pool than on the sinking POC supply. Hence, the enigmatic major mismatch between the organic carbon demand of the deep-water heterotrophic microbiota and the POC supply rates might be substantially smaller by including the potentially available nsPOC and its autochthonous production in oceanic carbon cycling models.