Browsing Departament de Ciències Ambientals by Subject "577"

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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 ...

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 ...

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 ...

Linking river sediment physical properties to biofilm biomass and activity

Ann, Vannak (Date of defense: 2015-06-30)

River sediments are composed by a variety of grain sizes which determine their permeability and biogeochemistry. The aim of this thesis was to test whether differences in river sediment physical characteristics generate ...

Radiación ultravioleta y sequía: efectos sobre la fisiología y la descomposición de hojarasca de especies arbustivas mediterráneas en el contexto del cambio climático

Rodríguez Hidalgo, Claudia Marina (Date of defense: 2020-09-09)

Various climatic models predict an increase in the ultraviolet (UV) radiation and a reduction in the precipitation levels reaching in the Mediterranean Basin. Exposure of plants to different levels of UV radiation and water ...