Resumen: Este estudio comparativo tiene como objetivo, potenciar las destrezas comunicativas: comprensión auditiva y expresión oral de futuros docentes de inglés, apoyándose en la filmación como herramienta comunicacional y didáctica. Participan 105 estudiantes de un programa de formación docente de Ecuador. El 'grupo intervención' compuesto por 50 participantes -produce filmes cortos en inglés-y mediante la observación de sus producciones detectan los errores del lenguaje cometidos, y trabajan en su auto corrección. El 'grupo control' compuesto por 55 participantes, aplica una estrategia didáctica basada en la -repetición de vocabulario-mediante aplicaciones de internet. Se administra el Knowledge English Test (KET) Cambridge Press como pre-test y pos-test para medir: corrección gramatical, entonación, pronunciación, registro lingüístico, y comprensión auditiva general y exacta. Los resultados muestran que todos los participantes mejoraron las competencias comunicativas en el segundo idioma, pero se observa mayor fluidez, claridad en las ideas expresadas, y confianza al hablar en los participantes que produjeron filmes cortos. Palabras Claves: inglés, adquisición del leguaje, auto evaluación, educación superior.Abstract: This comparative study aims to promote communicative skills: listening comprehension and oral expression in future English teachers, based on the filming as a communication and didactic tool. 105 students participate in a teacher training program in Ecuador. The 'intervention group' composed of 50 participants -produces short films in English -and by observing their productions participants detect the language errors committed, and work on their self-correction. The 'control group' composed of 55 participants, applies a didactic strategy based on the 'repetition of vocabulary' through internet applications. The Cambridge Press Knowledge Test (KET) is administered as a pre-test and post-test to measure: grammatical correction, intonation, pronunciation, linguistic register, and general and exact listening comprehension. The results show that all the participants improved the communicative competences in the second language, but greater fluency, clarity in the expressed ideas, and confidence in speaking on the participants who produced short films were observed.
Phycological flora of the Guadalquivir River Basin. Its value in determining the ecoregionalization of the basinIn compliance with the Water Framework Directive of the European Union, we needed to diagnose the ecologic quality of the different sections of the rivers of the Guadalquivir basin. In order to establish a regional classification of the water bodies by a grouping into areas of similar characteristics, we took into consideration the benthic phycologic flora of the Guadalquivir-River basin. Benthic algae, being one of the groups of organisms that best define the water quality of rivers, are useful for characterizing the basin's ecoregionalization. We collected multihabitat samples in 109 georeferenced reaches and identified 777 algal taxa: 397 Bacillariophyceae (diatoms), 181 Chlorophyta, 148 Cyanoprokariota, 41 Euglenophyta, 4 Chrysophyceae, 3 Dinophyta, 2 Rodophyta, and 1 Cryptophyta. Except for Achnanthidium minutissimum-it being present in nearly all the sites-the species composition enabled the identification of 4 groups: (1) the Sierra-Morena rivers with a predominantly siliceous substrate and concomitantly low mineralized water (< 250 mg/L); (2) the Doñana and lower-Guadiamar rivers of the lower-Guadalquivir with a high relative proportion of sodium; (3) rivers with any kind of disturbance, principally organic contamination, grouped regardless of their geographical location; (4) rivers of high calcium content that, though constituting a heterogeneous group, the majority of which belong to the Betic-Mountain region. According to our results, the subbasin was the one that determined the composition of the periphyton. The categorization of the rivers according to biota obtained in the present work differs from the hydrogeomorphological classification established by the Guadalquivir Hydrographic Confederation.
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