Search results for "69"

showing 10 items of 1106 documents

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…

lcsh:SH1-691arrecife artificialEpinephelus marginatusstock enhancementSH1-691Mediterraneanjuveniles cultivados en criaderolcsh:Aquaculture. Fisheries. Anglinghatchery-reared juvenilesrepoblaciónartificial reefAquaculture. Fisheries. AnglingMediterráneostock enhancement hatchery-reared juveniles Epinephelus marginatus artificial reef Mediterranean
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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…

lcsh:SH1-691biologyFish farmingManagement Monitoring Policy and LawAquatic Sciencebiology.organism_classificationlcsh:Aquaculture. Fisheries. AnglingIndigenousFisheryMediterranean seaSerpulidaeGeographylcsh:QH540-549.5lcsh:EcologyTube (container)Water Science and TechnologyAquaculture Environment Interactions
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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…

lcsh:SH1-691chemistry.chemical_classificationgeographyNutrient cyclegeography.geographical_feature_categoryEcologyFluorescence spectrometryDrainage basinWeatheringManagement Monitoring Policy and LawAquatic ScienceParticulatesLatvialcsh:Aquaculture. Fisheries. Anglingfluorescence spectrachemistryEnvironmental chemistryTributaryDissolved organic carbonEnvironmental scienceOrganic matterDOMNature and Landscape ConservationWater Science and TechnologyKnowledge and Management of Aquatic Ecosystems
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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…

lcsh:SH1-691crayfishEcologybiologyEcologyLake ecosystemstable isotopesManagement Monitoring Policy and LawAquatic Sciencebiology.organism_classificationCrayfishPacifastacusSignal crayfishlcsh:Aquaculture. Fisheries. Anglinginvasive speciesFisheryHabitathabitat connectivityLittoral zoneProfundal zoneNature and Landscape ConservationWater Science and TechnologyTrophic levelKnowledge and Management of Aquatic Ecosystems
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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…

lcsh:SH1-691education.field_of_studyEnvironmental EngineeringPenaeidaebiologyPopulationAquatic ScienceOceanographybiology.organism_classificationCrustaceanlcsh:Aquaculture. Fisheries. AnglingDemersal zoneShrimpFisheryMediterranean seaSexual maturityCarapaceeducationEcology Evolution Behavior and SystematicsMediterranean Marine Science
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Estrategias de resolución de problemas en la formación docente. Estudios de casos

2017

Resumen basado en el de la publicación Resumen en inglés La revisión de la literatura científica sobre el aprendizaje basado en problemas muestra divergencias en los planteamientos teóricos y metodológicos de sus principales autores, que acaban reduciendo esta herramienta a la asimilación de contenidos conceptuales a partir del cumplimiento exahustivo del currículo. Se defiende una interpretación del marco curricular para transformar los contenidos en problemas sociales, que respondan a las demandas ciudadanas del alumnado. La teoría de las representaciones sociales es el marco en el que se fundamenta el trabajo, con las ideas espontáneas para conocer los obstáculos que condicionan la praxi…

lcsh:Social Scienceslcsh:Hestrategia de aprendizajelcsh:LC8-6691lcsh:Theory and practice of educationmétodo de enseñanzasolución de problemaslcsh:Special aspects of educationAprendizaje Basado en Problemas; currículo; representaciones sociales; proyectos curriculares; innovaciónpráctica pedagógicaProfessors Formaciólcsh:LB5-3640Ciència Ensenyament
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Análisis de la elección de la pierna de ataque predominante en la prueba de 400 m vallas de los XIII Campeonatos del Mundo de Atletismo Daegu 2011

2012

Objetivos: Analizar la utilización de una u otra pierna como pierna de ataque predominante en atletas de 400 m vallas de alto nivel. Método: El estudio es descriptivo de corte transversal. Se estudiaron todas las carreras de 400 m vallas de los 72 participantes (34 hombres y 38 mujeres) en los XIII Campeonatos del Mundo de Atletismo Daegu 2011, mediante la grabación en video desde la tribuna principal del Daegu Stadium de las 18 carreras de 400 m vallas disputadas, y el posterior análisis mediante la aplicación informática Kinovea 0.8.4. Resultados: Por atletas, en el total de las carreras masculinas, la pierna de ataque predominante fue la izquierda con un 63,6 % (42 atletas) y con la pier…

lcsh:SportsCultural Studieslcsh:LC8-6691lcsh:Special aspects of educationestructura rítmicabiomecánica400 m vallaspierna de ataqueEducationbody regionslcsh:GV557-1198.995Atletisme Entrenamentatletismoatletismo 400 m vallas estructura rítmica pierna de ataque biomecánicaApunts Educación Física y Deportes
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ANÁLISE DA PERCEPÇÃO DOS RESIDENTES SOBRE O IMPACTO CULTURAL E DESPORTIVO DE UM GRANDE PRÊMIO DE FÓRMULA 1

2013

 The aim of this study is to analyze the resident’s perception about the cultural and sport impact of European Formula 1 Grand Prix. Cluster analysis was performed by combining hierarchical and non-hierarchical methods, which allowed us to differentiate three groups with different perceptions towards sporting event: Unfavorable, Moderate Unfavorable and Moderate Favorable. Most residents believe that this event has no significant impact to cultural and sporting level. Also, differences were found between the three groups of residents in the interest of Formula 1, the support for the event, attendance and the degree of identification.  

lcsh:Sportslcsh:LC8-6691lcsh:GV557-1198.995genetic structuresresident population; social perception. Sports. cultural factorsPopulação residente. Percepção social. Esporte. Fatores culturais.lcsh:Special aspects of educationAttendancePsychologyHumanitiesEducationPoblación residente Percepción social. Deportes. Factores culturalesMovimento
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El análisis narrativo en la educación física y el deporte

2011

Este artículo complementa otro anterior publicado en esta mis ma revista ( v. 17, n.1, 2011) en el que se reflexionaba sobre las cuestiones de qué es la investigación narrativa y qué puede ofrecer al estudio de la educación física y el deporte. Este trabajo se ocupa de la vertiente metodológica de la investigación narrativa, concretamente del análisis narrativo. En primer lugar se expone qué se entiende por análisis narrativo. En segundo lugar, se distingue entre dos grandes estrategias utilizadas para analizar narrativas: las que enfatizan la historia y las que enfatizan el análisis. La tipología se completa con una revisión de varios estudios que centran su foco de análisis en el Qué y/o …

lcsh:Sportslcsh:LC8-6691lcsh:GV557-1198.995lcsh:Special aspects of educationCiències de l'esportCiència Ensenyament
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El desenvolupament de la investigació sobre pilota valenciana : guia bibliogràfica i fonts d’informació

2016

Resumen tomado de la publicación Se presenta un estudio bibliográfico de los trabajos académicos sobre Pelota Valenciana, efectuado a partir de la consulta de las fuentes documentales de la Federació de Pilota Valenciana, del Museu de la Pilota de Genovés y de diversos catálogos y bases de datos. Se han identificado 181 trabajos, entre artículos de revistas, publicaciones monográficas, comunicaciones a congresos, tesis doctorales y obras de referencia. Los trabajos pioneros se remontan a los años 60 y 70 del siglo XX, mientras que se observa una gran eclosión de publicaciones a partir de mediados de la década de los 80, en una tendencia que se mantiene hasta la segunda década del siglo XXI,…

lcsh:Sportslcsh:LC8-6691lcsh:Special aspects of educationdeporteinvestigación sobre literatura científicaBibliografiaPelota Valenciana; Historia de la investigación; Guía Bibliográfica; Ámbitos de estudio.lcsh:GV557-1198.995InvestigacióSociologiaPelota Valenciana; Historia de la investigación; Guía Bibliográfica; Ámbitos de estudiobibliografía analíticajuego de pelotaValencia
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