Agricultural practices, biodiversity and ecosystem services provided by bats in Mediterranean crops 

    Puig, Xavier, 1975- (Date of defense: 2021-07-09)

    We study the effect of organic farming practices on several taxa in olive groves and vineyards. Sessile organisms show a stronger response to treatment, their diversity being higher in organic vineyards. Vagile organism ...

    Anàlisi de la capacitat de regeneració en estadis inicials del desenvolupament en diverses espècies mediterrànies del gènere Quercus 

    Pascual Fabrellas, Gemma (Date of defense: 2002-12-19)

    Aquest treball es centra en l'estudi de la regeneració vegetativa en els estadis inicials del desenvolupament de Quercus coccifera, Q. humilis, Q. ilex i Q. suber, analitzant la capacitat de rebrotada després de l'eliminació ...

    Anàlisi dels descartaments efectuats per la flota d'arrossegament en el Golf de Lleó 

    Mallol i Martínez, Sandra (Date of defense: 2005-07-22)

    La pesca d'arrossegament practicada al mar Mediterrani incideix sobre un rang batimètric molt ampli i afecta a nombrosos tipus de fons que presenten comunitats molt diversificades, on les espècies de peixos, crustacis, ...

    Antioxidant enzyme activities in fluvial biofilms as biomakers of metal pollution 

    Bonet Sánchez, Berta (Date of defense: 2013-02-28)

    The present thesis aims to evaluate the use of antioxidant enzyme activities (AEA) of biofilm communities as biomarkers of metal pollution (mainly Zn) in fluvial ecosystems. In order to test AEA as biomarkers of metal ...

    Arsenic and fluvial biofilms: biogeochemistry, toxicity and biotic interactions 

    Barral Fraga, Laura (Date of defense: 2017-10-26)

    Based on the current knowledge about biofilm ecotoxicology and arsenic biogeochemistry in freshwater ecosystems, this thesis studied, under realistic environmental concentrations, i) the role of benthic biofilms in the ...

    At the edge of aquatic systems: intermittent streambed microbial communities’ responses to hydrological alterations 

    Gionchetta, Giulia (Date of defense: 2019-10-25)

    Hydrological drought is a process of natural desiccation mainly due to large shortage of rainfall events. Reduced precipitations and prolonged droughts are spreading worldwide and threaten the integrity of aquatic ...

    Biofilm responses to flow intermittency in Mediterranean rivers 

    Colls Lozano, Miriam (Date of defense: 2020-07-31)

    Currently, global change is promoting the spatiotemporal occurrence of temporary streams, altering fluvial ecosystem function and structure, and the ecosystem services they provide. To effectively protect fluvial ecosystems, ...

    Climate change and Mediterranean ecosystems: plant and soil responses to UV radiation and water availability before and after a perturbation 

    Díaz Guerra, Laura (Date of defense: 2017-07-21)

    Taking into account the expected changes in solar UV levels, precipitation and fire regime in the Mediterranean basin, the main goal of this thesis was to evaluate the effects of UV radiation (UV-A and UV-B) and diminished ...

    Climate change and the expansion of thermophilic fishes in the northwestern Mediterranean: the importance of studying condition and reproduction to understand the increase in their abundance 

    Villegas Hernández, Harold O. (Date of defense: 2015-09-04)

    A direct consequence of sea warming in the Mediterranean is a increase in the abundance of thermo-tolerant species fish species such as Sphyraena viridensis, Pomadasys incisus, Pomatomus saltatrix and Trachinotus ovatus. ...

    Comunidades de cianobacterias bentónicas, producción y liberación de microcistinas en el río Muga (NE Península Ibérica) 

    Vassal'lo Saco, Jara (Date of defense: 2010-02-24)

    El estudio de las comunidades de cianobacterias en la cuenca del río Muga permite profundizar en la búsqueda de factores que favorezcan o inhiban la acumulación intracelular de microcistinas y su liberación al medio externo ...

    Conservation biology of the Spanish toothcarp (Aphanius iberus): mechanisms of coexistence with eastern mosquitofish (Gambusia holbrooki) 

    Fernández-Vilar, Andrés Lucas (Date of defense: 2023-07-10)

    Inland waters are amongst the most diverse and impacted ecosystems globally, and they host many endangered taxa. Cyprinodontiforms are at the forefront of endangered freshwater fishes in Europe, with more than 80% of the ...

    Contribució al coneixement de variables geoambientals en l'àmbit de la Costa Brava (Girona) 

    Geis Nielsen, Christian (Date of defense: 2005-06-28)

    La tesi doctoral desenvolupada, emmarcada dins del camp de les Ciències Ambientals, aplica la Geologia Ambiental orientada al coneixement dels processos i recursos geològics de cara a la planificació i a l'ordenació del ...

    Control and optimization of an SBR for nitrogen removal: from model calibration to plant operation 

    Corominas Tabares, Lluís (Date of defense: 2006-05-19)

    En aquesta tesis s'ha desenvolupat un sistema de control capaç d'optimitzar el funcionament dels Reactors Discontinus Seqüencials dins el camp de l'eliminació de matèria orgànica i nitrogen de les aigües residuals. El ...

    Controls on the dynamics of riverine dissolved organic matter: insights from a Mediterranean river network 

    Casas Ruiz, Joan Pere (Date of defense: 2017-05-31)

    In river networks, dissolved organic matter (DOM) constitutes the major pool of organic carbon, and plays a key role as energy source and modulator of toxic substances availability. In this thesis, Joan P. Casas-Ruiz and ...

    Cystoseira-dominated assemblages from sheltered areas in the Mediterranean sea : diversity, distribution and effects of pollution 

    Sales Villalonga, Marta (Date of defense: 2010-06-08)

    Les algues del gènere Cystoseira són els principals organismes formadors d'estructura en fons rocosos ben il·luminats del Mar Mediterrani. Formen unes comunitats molt estructurades que s'assemblen ecològicament als boscos ...

    Disentangling the complexity of chemical and physical stressors impacting river systems 

    Sabater Liesa, Laia (Date of defense: 2021-01-29)

    Humanity has always been closely linked to rivers, benefiting from their resources while producing impacts associated with their activity.Thus, river systems have been exposed to multiple stressors, which have affected the ...

    Dissecting the assembly process of benthic communities from Neotropical streams 

    González Trujillo, Juan David (Date of defense: 2020-07-30)

    I used the metacommunity framework to dissect the relative influences of dispersal (in ecological and evolutionary timeframes), selection (driven by abiotic factors) and ecological drift on the assembly process of freshwater ...

    Distribución geográfica, predicción espacial y diversidad de los hábitats litorales en la costa catalana 

    Cefalì, Maria Elena (Date of defense: 2019-03-07)

    According to the Habitats Directive (92/43/ECC) a habitat is defined as “the terrestrial or aquatic area, whether entirely natural or semi-natural, differentiated by its geographical, biotic and abiotic characteristics, ...

    Distribution of diatom communities in agricultural and mining watersheds of Southwest Spain 

    Urrea Clos, Gemma (Date of defense: 2010-11-05)

    Els sistemes aquàtics continental representen un dels ecosistemes més amenaçats a nivell mundial, com a conseqüència de l'ús intensiu quel'home en fa. La conca del Guadiana no està lliure d'aquestes pressions antròpiques. ...

    Ecologia alimentària de la comunitat de peixos de l'Estany de Banyoles 

    García-Berthou, Emili (Date of defense: 1994-11-03)

    Before 1910, the fish assemblage of Banyoles Lake (Catalonia, Spain) consisted of: eel (Anguilla anguilla), Mediterranean barbel (Barbus meridionalis), freshwater blenny (Bennius fluviatilis), three-spined stickleback ...