Analysis of the impact of organic pollutants on marine microbial communities 

    Cerro Gálvez, Elena (Date of defense: 2019-09-19)

    Increasing amounts of organic synthetic chemicals are currently emitted to the environment by human activities. The more recalcitrant fraction of this pollutant mixture reaches marine ecosystems mainly through rivers, ...

    Diversity, ecology and evolution of marine diazotrophic microorganisms 

    Cornejo Castillo, Francisco Miquel (Date of defense: 2017-12-19)

    Biological N2 fixation, the reduction of dinitrogen (N2) gas to biologically available nitrogen, is a fundamental process since it represents a source of new nitrogen for marine life in areas where this important element ...

    Large-scale biogeography of marine pelagic bacteria and archaea 

    Salazar Guiral, Guillem (Date of defense: 2019-02-15)

    The dark ocean contains about 70% of the ocean’s microbial cells and 60% of its heterotrophic activity, which is mainly fueled by the flux of organic particles produced in the surface ocean and exported to the bathypelagic ...

    Retinoic acid signaling pathway : gene regulation during the onset of puberty in the European sea bass. 

    Medina Henríquez, Paula Javiera (Date of defense: 2019-07-08)

    European sea bass (Dicentrarchus labrax) aquaculture is a thriving industry in Spain where it reached about 23,500 t and a market value of approximately 133 million euros. However, most of the sea bass farms produce a high ...

    Spatial, temporal and behavioral patterns of marine protists = Patrons espaials, temporals i de comportament dels protistes marins 

    Rodríguez Giner, Caterina (Date of defense: 2017-09-27)

    The oceans are microbial-dominated ecosystems, where protists (single-celled eukaryotes) play fundamental roles performing multiple functions as primary producers, consumers, decomposers as well as trophic linkers in aquatic ...

    Syntrophic acetate oxidation in the anaerobic digestion of nitrogen-rich wastes : from microbial interactions to process optimization 

    Ruiz Sánchez, Josep (Date of defense: 2018-11-09)

    The anaerobic digestion (AD) consists of a cascade of syntrophic interactions between several microbial groups that result in the breakdown of biodegradable organic matter in the absence of oxygen, resulting in the production ...

    Tracing the dynamics of dissolved organic matter in marine systems exposed to natural and experimental perturbations 

    Aparicio Bernat, Francisco Luis (Date of defense: 2016-09-22)

    In the coming decades, global warming will affect the biogeochemical cycles evolution, particularly the carbon cycle. In this context, it is necessary to gain knowledge on the Earth natural mechanisms to relieve the ...