Now showing items 2952-2971 of 11001

    Ecología y evolución de los Papiionoidea del Paleártico Occidental 

    Masó Planas, Albert (Date of defense: 2018-01-26)

    En la primera parte de la tesis, intentamos comprobar la idea generalizada de que la vegetación determina las características de la comunidad de mariposas, para lo cual realizamos una investigación en un área geográfica ...

    Ecología y genética de ascidias invasoras en el Mediterráneo occidental 

    Ordóñez Sánchez, Víctor (Date of defense: 2013-11-15)

    Las invasiones biológicas son un tema de especial importancia para los biólogos marinos. Estas invasiones pueden causar daños tanto ecológicos como económicos. El Mar Mediterráneo es uno de los ecosistemas marinos con más ...

    Ecología y sistemática de los quironómidos (Insecta, Diptera) de los embalses españoles 

    Prat i Fornells, Narcís (Date of defense: 1978-06-21)

    Se estudian los quironómidos desde diferentes ángulos tanto su sistemática como algunos aspectos de su ecología en los embalses españoles. La tesis se divide en tres partes: dos de sistemática y una de ecología. En la ...

    Ecology and biodiversity of the deep-sea meiobenthos from the Blanes Canyon and its adjacent slope (NW Mediterranean) = Ecología y biodiversidad del meiobentos profundo del Cañón de Blanes y su talud adyacente (NO Mediterráneo) 

    Román Moreno, Sara (Date of defense: 2017-09-22)

    Submarine canyons are major topographic structures forming deep incisions in shelfs and continental margins around the globe. Due to their topographic characteristics, canyons influence both local hydrodynamic conditions ...

    Ecology and bioindicator potential of benthic macroinvertebrates in a Mediterranean salt wedge estuary: the Ebro River case 

    Nebra Costas, Alfonso (Date of defense: 2016-01-29)

    The Ebro Delta-Estuary complex is one of the largest wetland areas in the western Mediterranean, and it is considered one of the most important estuarine zones in Europe. In 2013, the Ebro watershed, including its deltaic ...

    Ecology and conservation of cetaceans in southern iberian waters 

    Giménez, Joan (Date of defense: 2018-07-13)

    This thesis fills important gaps of knowledge that will help to develop a proper conservation strategy for cetaceans in southern Iberian waters. We were able to define different ecological management units for bottlenose ...

    Ecology and conservation of the Mediterranean endemic coral Cladocora caespitosa = Ecología y conservación del coral endémico del Mediterráneo Cladocora caespitosa 

    Kersting, Diego K. (Date of defense: 2014-02-07)

    Marine ecosystems are declining worldwide threatened by an increasing number of stressors. Global change-related disturbances have highlighted the need of new complementary conservation measures; for which the knowledge ...

    Ecology and evolution of microbial nitrifiers / Ecología y evolución de los microorganismos nitrificantes 

    Fernández Guerra, Antonio (Date of defense: 2013-02-15)

    Ammonia oxidation, the first and the rate-limiting step in nitrification, is one of the cornerstones of the cycle. Members from the bacterial and archaeal domains are key players in ammonia oxidation in many different ...

    Ecology of some keystone invertebrates inhabiting shallow soft bottom communities of the Maresme coast (NW Mediterranean Sea) 

    Baeta Alacio, Marc (Date of defense: 2015-04-29)

    Bivalves living in large aggregations of individuals (reefs or beds), such as mussels, clams, cockles and some high trophic predators such as sea stars, play an essential ecological role in the structure, integrity, ...

    Ecology of the benthic macroinvertebrates in the lower Ebro River: community characterization, population dynamics and bioaccumulation of pollutants in response to environmental factors / Ecologia dels macroinvertebrats bentònics al tram baix del riu Ebre: caracterització de la comunitat, dinàmica de poblacions i bioacumulació de contaminants en resposta a factors ambientals 

    Cid Puey, Núria (Date of defense: 2010-11-18)

    The effects of the main anthropogenic impacts in the fluvial ecosystem of the lower Ebro River are evaluated along the five chapters of the present thesis, using the benthic macroinvertebrate community as a bioindicator. ...

    Ecology of the macroinvertebrate communities in Mediterranean rivers at different scales and organization levels 

    Bonada i Caparrós, Núria (Date of defense: 2003-04-02)

    The main objective of this work has been to determine the structure of the macroinvertebrate communities in mediterranean rivers at different scales, organization and taxonomical levels. To achieve that, an appropriated ...

    Ecomorphological discrimination of vertebrate sister species with recent phylogenetic divergence using novel non-destructive morphometric methods = Discriminación ecomorfológica de especies hermanas de vertebrados con divergencia filogenética reciente utilizando nuevos métodos morfométricos no-destructivos 

    Santos Santos, Javier H. (Date of defense: 2019-01-17)

    The thesis "Ecomorphological discrimination of vertebrate sister species with recent phylogenetic divergence using novel non-destructive morphometric methods” compares morphological evolution during syntopic adaptive ...

    Economia i societat dels pobles ibèrics de l’àrea catalana a través de l’estudi dels conjunts ceràmics (segles VI-II aC) 

    Asensio, David (Date of defense: 2019-12-17)

    Aquesta Tesi neix essencialment de la voluntat d’obtenir el màxim potencial informatiu possible de l’estudi del mobiliari ceràmic, sens dubte un dels elements de cultura material més abundant en el context de ...

    Economic Activity and Atmospheric Pollution in Spain: An Input-Output Approach 

    Serrano Gutiérrez, Mònica (Date of defense: 2008-10-20)

    In this study we analyse some aspects of the interdependences between the economy and the environment by applying the input-output approach. Although economic activity affects the environment in many ways, in this study ...

    An economic perspective on the challenges associated with tackling neglected diseases: from product development to implementation and adoption 

    Aerts, Céline (Date of defense: 2020-09-14)

    The World Health Organization (WHO) has identified over 20 neglected tropical diseases (NTDs), affecting 1.5 billion people worldwide (Uniting to combat neglected tropical diseases, 2017). While being all infectious diseases, ...

    Economic regulation and efficiency of electricity systems 

    Daví-Arderius, Daniel (Date of defense: 2020-10-09)

    Environmental awareness is of increasing concern for society and leads heavy pressure to adopt challenging political decisions. In this context, electricity systems are facing a massive transformation from the replacement ...

    Economía política de la reforma de las políticas del Banco Mundial y el Fondo Monetario Internacional en África subsahariana. El caso del Chad. 

    Colom Jaén, Artur (Date of defense: 2009-10-22)

    A mediados de los 90 emerge un cuestionamiento del enfoque del ajuste estructural promovido por el Banco Mundial y el FMI en los países en desarrollo, especialmente en África, que lleva a estas instituciones a cambiar su ...

    Economía política de la tributación en Colombia, 1821-2015 

    Hernández Rodríguez, Isidro (Date of defense: 2021-10-26)

    Los análisis comparativos de las estructuras y de los sistemas impositivos en el ámbito mundial detectan diferencias substanciales entre conjuntos de países. En los últimos sesenta años, de manera sistemática, encuentran ...

    Economía y psicología: auditoría del factor humano y estrés, una aproximación empírica 

    Fernández Sevillano, Jaime (Date of defense: 1990-01-01)

    A continuación exponemos en forma resumida el propósito y contenido de esta Tesis. La Parte Teórica comprende: En el capítulo 2 trataremos de repasar cual ha sido la relación entre economía y psicología. Veremos como ...

    Ecophysiological and molecular characterization of estuarine microbial mats 

    Villanueva Álvarez, Laura (Date of defense: 2005-12-22)

    Microbial mats are prokaryotic communities that are thought to represent the present-day analogues of the first ecosystems on Earth. Their study reveals microbial strategies for survival under a broad range of environments. ...