Now showing items 14-33 of 174

    Biological interactions and resilience of seagrass ecosystems 

    Sanmartí Boixeda, Neus (Date of defense: 2020-12-18)

    Our world is subjected to a panoply of drivers of change. In this context, the understanding on how our biosphere resists, absorbs or is altered by the changes, appears as a hot question in ecology. In this respect, two ...

    Biological invasions: a temporal, spatial and plastic point of view: the case of Discoglossus pictus in Europe = Invasions biològiques: un punt de vista temporal, espaial i plàstic : el cas de Discoglossus pictus a Europa 

    Pujol Buxó, Eudald (Date of defense: 2017-09-15)

    The rates at which allochthonous species are introduced and become invasive worldwide are unprecedented and accordingly, the number of studies on invasion biology have increased during the past years. However, biological ...

    Biological mechanisms underlying psychosocial stress response: The consequences of prenatal maternal distress and childhood maltreatment on the endocrine and immune systems 

    Castro Quintas, Águeda (Date of defense: 2024-02-26)

    [eng] During critical periods of development, psychosocial stress experiences may alter key neural networks of the human brain, with long-lasting effects on behavior and mental health. However, the specific biological ...

    Biosíntesi, distribució, acumulació i funció de la vitamina E en llavors: mecanismes de control 

    Siles Suárez, Laura (Date of defense: 2017-05-23)

    En aquesta tesi doctoral s’ha estudiat la distribució, acumulació, funció i biosíntesi dels tocoferols i tocotrienols (vitamina E) en llavors, així com els seus mecanismes de control. En primer lloc es van estudiar les ...

    Cambios en la posición trófica del lobo común sudamericano (Otaria flavescens) en respuesta a la explotación masiva de mamíferos marinos y pesca industrial 

    Zenteno Devaud, Lisette (Date of defense: 2016-07-18)

    Los depredadores marinos pueden cambiar su dieta a través del tiempo como consecuencia de cambios antropogénicos y naturales, por lo que un punto de referencia histórico aporta información básica y necesaria para comprender ...

    Candidate genes for psychosis and their interaction with environmental factors: impact on psychosis-proneness = Gens candidats per psicosi i la seva interacció amb factors ambientals: impacte sobre la vulnerabilitat per a psicosi 

    Castro i Català, Marta de (Date of defense: 2017-09-22)

    Schizophrenia is a severe and complex mental disorder that results in an inability to cope with life’s ordinary demands and routines. Normally, it appears in late adolescence, more frequently and developing earlier in ...

    Caracterización de la topografía dental en la tribu Papionini: Inferencias alimentarias en los cercopitecinos del Plio-Pleistoceno de Sudáfrica 

    Avià García, Yasmina (Date of defense: 2021-12-10)

    El trabajo que se presenta en esta Tesis Doctoral se centra en el estudio de la topografía dental de los molares superiores e inferiores de diversas especies de primates de la tribu Papionini. El objetivo general es ...

    Chrinomids as lake paleoenvironmental indicators: the role of present fauna to understand the past 

    Tarrats Sada, Pol (Date of defense: 2018-01-12)

    The study of past ecological changes is highly useful for understanding how ecosystems have responded to climate and human-induced disturbances. It is thus relevant in the context of climate change, as it allows several ...

    Computer-Aided Drug Design applied to marine drug discovery = Disseny de fàrmacs assistit per ordinador aplicat a la cerca de possibles fàrmacs marins 

    Llorach Parés, Laura (Date of defense: 2019-11-29)

    The potential of natural products in general, and marine natural products in particular, as pharmacological entities has been widely demonstrated in recent years. Marine benthic ecosystems contain an extraordinary range ...

    Consecuencias psicológicas y neurobiológicas del maltrato infantil: alteraciones neuroendocrinas en la regulación del estrés e implicaciones en la salud mental infantojuvenil 

    Marqués Feixa, Laia (Date of defense: 2022-06-03)

    El maltrato infantil es un fenómeno muy complejo que afecta de manera integral al individuo y se asocia con diferentes problemas de salud mental en la infancia, adolescencia y adultez. Aunque el estudio del trauma relacional ...

    Conservation Planning of the Endangered Pyrenean frog by integratingnatural history, landscape and population genomics under Global Changes Scenarios 

    Peso Fernández, Marcos (Date of defense: 2018-12-14)

    The Pyrenean frog (Rana pyrenaica) is a Pyrenees endemic species, mostly distributed between Navarra and Aragón, and recently was described in few streams of France. The typical habitat of the species is mountain streams. ...

    Contributions to the knowledge of marine heterobranch sea slugs (Mollusca: Gastropoda): Panama biodiversity and cryptic species 

    Córdoba González, Darío Eliecer (Date of defense: 2022-07-18)

    The biodiversity of a country is part of its natural wealth and the study of it is fundamental for a scientific researcher, such is the case of the Panamanian marine coasts in which there has not been an exhaustive taxonomic ...

    Control natural de la vespeta del castanyer a Catalunya "Dryocosmus kuriphilus" Yasumatsu (Hym., Cynipidae). Evolució de la plaga a les castanyedes catalanes i les seves repercussions sobre la comunitat d’espècies autòctones que conformen el complex parasitoide 

    Jara Chiquito, Juan Luis (Date of defense: 2023-01-13)

    [cat] La vespeta del castanyer, Dryocosmus kuriphilus Yasumatsu (Hymenoptera: Cynipidae) és una espècie cedidògena originària de l'est de la Xina, que ataca tots els arbres del gènere Castanea (Fagaceae) col·lectant-se per ...

    De l'ecologia del comportament a la demografia: lliçons per a la conservació del sisó comú (Tetrax tetrax) = From behavioral ecology to demography: lessons for the little Bustard (Tetrax tetrax) conservation 

    Cuscó Martinez, Francesc (Date of defense: 2019-01-11)

    La conservació de les espècies amenaçades requereix entendre els factors que determinen la selecció de l’hàbitat, la supervivència i la productivitat de les seves poblacions. Sota l’actual context d’intensificació agrícola, ...

    Denitrification in mountain lakes = Desnitrificación en lagos de montaña 

    Palacín Lizarbe, Carlos (Date of defense: 2019-07-30)

    The reservoir size and pathway rates of the nitrogen (N) cycle have been deeply modified by the human enhancement of N fixation, atmospheric emissions, and climate warming, doubling the reactive nitrogen (Nr) available in ...

    Desarrollo, estabilidad y eficacia de biofertilizantes para la mejora del cultivo de plantas de tomate y maíz 

    Navarro Arenas, Miriam (Date of defense: 2021-10-07)

    El aumento de la población mundial en las últimas décadas, junto con la disminución de las tierras cultivables, ha puesto de manifiesto la necesidad de aumentar la producción agrícola para satisfacer la creciente demanda ...

    Developing of new stress-tolerant rice varieties for the Mediterranean region 

    Ramos de Fuentes, Eduardo (Date of defense: 2018-09-28)

    Rice (Oryza sativa) is the most important crop for human direct consumption, but its yield and production are strongly affected by biotic and abiotic stresses. Rice is the most salt-sensitive cereal and in addition, salinity ...

    Development of doubled haploids, chromosome doubling and CRISPR/Cas9 techniques in melon for the next generation of breeding 

    Hooghvorst, Isidre (Date of defense: 2021-04-28)

    The general aim of this PhD thesis was to study, develop and apply different breeding techniques in melon species in order to produce new commercial cultivars. The three specific objectives of this thesis are: 1. To ...

    Diet composition and habitat use in red deer (Cervus elaphus) populations in the northeastern iberian peninsula: relations with phenotypic plasticity in dental roots, group ethology and stress hormones 

    Gort Esteve, Araceli (Date of defense: 2023-09-22)

    [eng] Deer populations are increasing in recent times. One of the main causes is the abandonment of agriculture and extensive livestock farming. This thesis focuses on expanding our knowledge about the biology of red deer ...

    Differential responses of historical cereal lines to water stress: phenotype and gene expression = Respuesta diferencial de líneas históricas de cereales frente al estrés hídrico: fenotipo y expresión genómica 

    Medina Canzio, Susan Mery (Date of defense: 2017-09-15)

    Los futuros cambios climáticos ocasionarán una subida de las temperaturas y déficit en la disponibilidad de agua para la agricultura así como mayor concentración de CO2 en la atmósfera, donde el estatus hídrico y el flujo ...