Assessing the impacts of human activities on the fïsh assemblages from the Ebro Delta coastal lagoons: towards a sustainable management model 

    Rodríguez Climent, Sílvia (Date of defense: 2014-12-05)

    The Ebro Delta represents the most important wetland area in Catalonia, the second most important in Spain (after Doñana National Park) and one of the most important estuarine zones in Europe. Although relatively recently ...

    Avaluació regional de la dinàmica recent de l'ecotò bosc subalpí-prats alpins als Pirineus 

    Batllori Presas, Enric (Date of defense: 2008-05-28)

    El límit altitudinal del bosc, o ecotò superior bosc-prat alpí, constitueix per definició, la frontera entre l'estatge subalpí i l'estatge alpí separant, per tant, sistemes ecològics adjacents. És una de les fronteres més ...

    Biología, autoecología y toxinología de las principales especies del género "Dinophysis" asociadas a episodios de intoxicación diarreogénica por bivalvos (DSP). 

    Reguera Ramírez, Beatriz (Date of defense: 2003-07-02)

    Los dinoflagelados del género <i>Dinophysis</i> producen potentes toxinas lipofílicas que se transmiten a través de los bivalvos filtradores a niveles superiores de la red trófica, y los convierten en no aptos para el ...

    Biology and population ecology of uncultured Archaea in natural environments analyzed by taxon-specific molecular markers = Biología y ecología poblacional de Archaeas no cultivadas en ambientes naturales analizadas mediante marcadores moleculares específicos 

    Restrepo Ortiz, Claudia Ximena (Date of defense: 2016-02-05)

    The annual dynamics of three different ammonia-oxidizing archaea (AOA) ecotypes (amoA gene) and of the SAGMCG-1 (Nitrosotalea-like aquatic Thaumarchaeota) group (16S rRNA gene) were studied by newly designed specific primers ...

    Capes d'aigua properes al fons riques en clorofil·la a en les aigües costaneres catalanes 

    Guallar Morillo, Carles (Date of defense: 2013-05-24)

    En la costa catalana s’ha observat la presència d’unes capes d’aigua properes al fons riques en clorofil•la a (HCNBL, de l’anglès High Chlorophyll Near Bottom Layer). Aquestes estructures productives principalment es ...

    Climate and Atmospheric CO2 Effects on Iberian Pine Forests assessed by Tree-Ring Chronologies and their potential for Climatic Reconstructions 

    Andreu Hayles, Laia (Date of defense: 2007-10-25)

    Two main purposes divided this Thesis into two parts, taking into account that the need of understanding current climatic fluctuations is still an important request of population living in the 21st century and the enormous ...

    Climate-induced changes in headwater streams: Effects of warming and drought on resource-consumer trophic interactions 

    Mas Martí, Esther (Date of defense: 2014-11-14)

    Changes in temperature and precipitation due to climate change are expected to increase stream water temperature and reduce their discharge. Consequently, more streams might face temporality, experiencing flow intermittency ...

    Condition Indices and their Relationship with Environmental Factors in Fish Larvae 

    Catalán Alemany, Ignacio (Date of defense: 2003-05-30)

    The high variability in the recruitment of marine fishes is probably explained by small fluctuations in the mortality rates of early developmental stages. A popular proxy for the potential mortality of fish larvae is the ...

    Conservation of marine habitat-forming species under climate change: population genetics and demographic responses of the Mediterranean red gorgonian Paramuricea clavata. 

    Arizmendi Mejía, Rosana (Date of defense: 2015-11-25)

    Climate change, along with other anthropogenic pressures (e.g. water pollution, overfishing and habitat degradation), is severely impacting oceans around the world, producing important changes in its physical and biological ...

    Crustacean zooplankton dynamics in Lake Redon: a stoichiometric, biochemical and isotopic approach 

    Ventura Oller, Marc (Date of defense: 2005-01-28)

    The aim of this thesis was to describe the life history variability of the assemblage of crustacean zooplankton in Lake Redon, with special emphasis in their life-cycles, ecological characteristics and their trophic ...

    Dendroecología de "Pinus halepensis" Mill. en Este de la Península Ibérica e Islas Baleares: Sensibilidad y grado de adaptación a las condiciones climáticas 

    Ribas Matamoros, Montserrat (Date of defense: 2006-09-28)

    El objetivo principal que se plantea en el presente trabajo es determinar la plasticidad del crecimiento radial del pino carrasco (Pinus halepensis Mill.) frente al clima. Más concretamente, evaluar el grado de adecuación ...

    Ecologia de les comunitats de quironòmids en rius mediterranis de referència / Ecology of Chironomidae Communities in Mediterranean Reference Streams 

    Puntí Casadellà, Maria del Tura (Date of defense: 2008-01-18)

    Aquest treball aborda l'ecologia de les comunitats d'un dels grups de macroinvertebrats bentònics més diversos i abundants dels nostres rius, els quironòmids. El principal objectiu d'aquesta tesi ha estat estudiar l'estructura ...

    Ecología de la bahía El Fangar (delta del Ebro): Factores físico-químicos, biológicos, sus interacciones y propuesta de un modelo 

    Varas Schiavi, Manuel (Date of defense: 2012-06-01)

    El delta del Ebro es uno de los más importantes de la Península Ibérica y del Mediterráneo. La bahía El Fangar, foco de este estudio, mide unos 12Km2, con valores de profundidad que varían entre los 0 y 8 metros. Presenta ...

    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 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 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 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 ...

    Efectes d'un incendi forestal en una riera mediterrània (Sant Llorenç del Munt, 2003) 

    Vila Escalé, Mireia (Date of defense: 2009-04-28)

    DE LA TESI:<br/><br/>Es realitza l'estudi dels efectes d'un incendi forestal sobre la fisicoquímica, l'hàbitat i les comunitats biològiques d'una riera mediterrània, riera de Gallifa, i la seva comparació amb una riera ...

    Effects of flow discontinuities on carbon gas fluxes in a Mediterranean fluvial network = Efecte de les dicontinuitats hidrològiques sobre els fluxes gasosos de carboni en una xarxa fluvial Mediterrània 

    Gómez Gener, Lluís (Date of defense: 2017-02-10)

    Inland waters are active components of the global carbon (C) cycle that transform, store and outgas more than half of the C they receive from adjacent terrestrial ecosystems. However, fundamental uncertainties regarding ...