Transiciones juveniles escuela-trabajo en la perspectiva de la equidad y oportunidades de intervención desde el ámbito local

Adaptació del marc teòric elaborat per a l'estudi “Joves en transició Escola-Treball: El Maresme 2009”, que va ser desenvolupat durant les pràctiques d'investigació del Màster Interuniversitari en Joventut i Societat per la Fundació Francesc Ferrer i Guàrdia. L'estudi es va plantejar com a objectiu general el de proporcionar a l'administració local referències d'utilitat per al coneixement dels processos de transició juvenil escola-treball. Els objectius específics de l'estudi van ser: (a) conèixer els itineraris de transició de les persones joves residents a la comarca del Maresme i que van finalitzar l'etapa obligatòria de l'educació secundària l'any que es va prendre com a referència; (b) detectar quins recursos de suport a les transicions escola-treball coneixien, quins utilitzaven i quin impacte van tenir –si escau- en la presa de decisions sobre els futurs itineraris; (c) avaluar quines necessitats presentaven aquestes persones joves i proposar alternatives per facilitar la seva cobertura mitjançant intervencions impulsades des de l'àmbit local

Zooplankton structure and dynamics in Mediterranean marshes (Empordà Wetlands): a size-based approach

Zooplankton community structure (composition, diversity, dynamics and trophic relationships) of Mediterranian marshes, has been analysed by means of a size based approach. In temporary basins the shape of the biomass-size spectra is related to the hydrological cycle. Linear shape spectra are more frequent in flooding situations when nutrient input causes population growth of small-sized organisms, more than compensating for the effect of competitive interactions. During confinement conditions the scarcity of food would decrease zooplankton growth and increase intra- and interspecific interactions between zooplankton organisms which favour the greatest sizes thus leading to the appearance of curved shape spectra. Temporary and permanent basins have similar taxonomic composition but the latter have higher species diversity, a more simplified temporal pattern and a size distribution dominated mainly by smaller sizes. In permanents basins zooplankton growth is not only conditioned by the availability of resources but by the variable predation of planktivorous fish, so that the temporal variability of the spectra may also be a result of temporal differences in fish predation. Size diversity seems to be a better indicator of the degree of this community structure than species diversity. The tendency of size diversity to increase during succession makes it useful to discriminate between different succession stages, fact that is not achieved by analysing only species diversity since it is low both under large and frequent or small and rare disturbances. Amino acid composition differences found among stages of copepod species indicate a gradual change in diet during the life cycle of these copepods, which provide evidence of food niche partitioning during ontogeny, whereas Daphnia species show a relatively constant amino acid composition. There is a relationship between the degree of trophic niche overlap among stages of the different species and nutrient concentration. Copepods, which have low trophic niche overlap among stages are dominant in food-limited environments, probably because trophic niche partitioning during development allow them to reduce intraspecific competition between adults, juveniles and nauplii. Daphnia species are only dominant in water bodies or periods with high productivity, probably due to the high trophic niche overlap between juveniles and adults. These findings suggest that, in addition to the effect of interspecific competition, predation and abiotic factors, the intraspecific competition might play also an important role in structuring zooplankton assemblages.

El cant coral infantil i juvenil educa en valors, hàbits i competències

This doctoral thesis is the result of the experience, continuous practice and day to day work as head of infant and youth choirs that the candidate has developed for over more than thirty years. The motivation, the concerns and the questions formulated with regards to choral singing, have underpinned this research. The thesis has focused on the learning of values, habits and competences in order to demonstrate that singing in an infant or youth choir is educational and goes far beyond the mere act of singing in a choir. We can therefore state that education is continuous, it never comes to an end and, furthermore, it unfolds in divergent ways. In summary to show that singing in an infant or youth choir is educational in the widest possible sense.