Search results for "H1"
showing 10 items of 1219 documents
New Mediterranean Marine biodiversity records (December, 2013)
2013
M. Bilecenoglu [et al.]
Primera liberación de juveniles de mero Epinephelus marginatus (Lowe, 1834) (Serranidae: Teleostei) cultivados en criadero en arrecifes artificiales …
2008
A pilot experiment of stock enhancement based on the release of hatchery-reared juveniles of dusky grouper, Epinephelus marginatus, was carried out at two artificial reefs located 0.9 km offshore the south-western Sicilian coast (Central Mediterranean). The fish assemblages inhabiting the reefs were characterized using underwater visual census (UVC) surveys. Despite some differences in fish species richness, diversity and abundance, both artificial reefs provide suitable feeding resources and shelter opportunities for the settlement of dusky grouper juveniles. A total of 95 dusky grouper juveniles, which were 3 and 4 years old, were released. No stress-related effects on fish swimming or be…
The role of two non-indigenous serpulid tube worms in shaping artificial hard substrata communities: case study of a fish farm in the central Mediter…
2019
Understanding the spread and establishment of non-indigenous species (NIS) is one of the primary areas of focus in bioinvasion science and is essential for generating appropriate management strategies in aquaculture. Here we investigated the role of 2 non-indigenous serpulid tube worms (Hydroides elegans and H. dirampha) in shaping the hard substrata communities around a fish farm in the Strait of Sicily over 1 yr (June 2014-June 2015), at 3 mo intervals (September and December 2014, March and June 2015). The mean density values of serpulids were significantly different at each sampling time. The density of serpulids on submerged panels showed a peak in spring (March 2015, after 9 mo) and d…
Spectrofluorimetric study of dissolved organic matter in River Salaca (Latvia) basin waters
2012
Dissolved organic matter (DOM) in surface waters influences mineral weathering, nutrient cycling, aggregation of particulate matter and photochemical reactions in waters and aquatic communities. In this study, the effectiveness of UV and fluorescence measurements in distinguishing the origin of DOM and processes within the river basin were analyzed using the River Salaca basin as an example. The basin of River Salaca is characterized by low anthropogenic pressure, however, the water color during the last few decades has increased (an effect known as brownification). As tools to study the composition of dissolved organic substances in waters of the River Salaca and its tributaries the use of…
Invasive crayfish increase habitat connectivity: a case study in a large boreal lake
2013
Several studies have shown that distinct compartments of lake ecosystems are coupled via transportation of organic matter, nutrients and energy across habitat boundaries. Here we evaluate the potential of the invasive signal crayfish (Pacifastacus leniusculus (Dana)) to modify energy pathways in large boreal lakes. Using a stable isotope mixing model and calculation of the isotopic niches we estimated the contribution of different food sources to the diets of crayfish captured from different habitats, and from that inferred their potential to transport energy across the littoral-profundal gradient. The crayfish caught from the littoral area utilized mainly littoral food sources, whereas the…
Reproductive features of the deep-water rose shrimp, Parapenaeus longirostris (Crustacea: Penaeidae), in the Strait of Sicily
2010
The deep‑water rose shrimp, Parapenaeus longirostris (Lucas, 1846), is one of the most valuable and heavily exploited demersal species of the Mediterranean bottom trawl fisheries. The basic life traits of this shrimp, in particular its reproductive aspects, are regularly monitored during experimental trawl surveys carried out in the Mediterranean Sea. Gonadic condition and maturity status for estimating the size at onset of sexual maturity are commonly assessed in females, using macroscopic color scales, histologically validated only in a few geographical areas. In this study, histological analyses were performed on rose shrimps collected from a trawl survey carried out in the Strait of Sic…
Fomentar la resiliencia en familias con enfermedades crónicas pediátricas
2013
En este artículo se describen los diferentes enfoques que se pueden aplicar al estudio del concepto de resiliencia familiar en el contexto de las enfermedades crónicas pediátricas y sus implicaciones en la práctica clínica y educativa. Asimismo, se describen los principios generales que deben regir esta práctica y las actuaciones concretas de los profesionales de los sistemas sanitarios, educativos y sociales. La resiliencia familiar es imprescindible para mantener una buena calidad de vida del niño enfermo y de la familia en su conjunto.
Los paralogismos de la vejez
2015
En este artículo se propone una reflexión en torno al tema del envejecimiento, centrándose en las dificultades metodológicas en cuanto a su definición por grupo etario; las distintas teorías sobre vejez desarrolladas en las ciencias sociales; los ejes simbólicos en torno a los cuales giran los discursos sobre la vejez; y las paradojas en la cuales se ven inmersos aquellos individuos socialmente clasificados como tales y la sociedad misma, nominada ya con el calificativo de envejecida.
« Je n’abandonnerai pas tant que je n’aurai pas retrouvé Potsdamer Platz »
2012
Homer, vieillard à lunettes interprété par Curt Bois, apparaît pour la première fois dans Les Ailes du désir (Der Himmel über Berlin, Wim Wenders, 1987) au cours de la fameuse séquence filmée à la Staatsbibliothek zu Berlin. Il monte difficilement les escaliers tout en invoquant la muse de sa voix intérieure : « Raconte, Muse, le conteur, l’enfantin, l’antique. » Il est écouté par son ange, Cassiel (Otto Sander). Puis, la caméra flottante de Wim Wenders continue son exploration du Berlin cont...
Un programa de formación en lectura crítica en internet para jóvenes con discapacidad intelectual
2018
Delgado, P. et al. (2018): “Un programa de formación en lectura crítica en internet para jóvenes con discapacidad intelectual”. Revista Española de Discapacidad, 6 (II): 229-245.