Mostrando ítems 1-10 de 16
Ferrer Maza, Dolors (Fecha de defensa: 2016-02-05)
This PhD thesis evaluates the links between parasitism, condition and reproduction of mature female individuals of three of the most captured fish species in the western Mediterranean Sea: European hake, ...
Barral Fraga, Laura (Fecha de defensa: 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 ...
Bacardit Peñarroya, Montserrat (Fecha de defensa: 2011-06-01)
Human activities have been interfering with the natural biogeochemical cycles of trace elements since the ancient civilizations. Although they are inaccessible and remote, high mountain lake catchments ...
Cefalì, Maria Elena (Fecha de defensa: 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 ...
Boy Roura, Mercè (Fecha de defensa: 2013-10-04)
Nitrate groundwater pollution in the Osona region is a persistent and widespread problem. Nitrate concentrations are commonly above the drinking water threshold of 50 mg/L in wells and springs. ANOVA ...
Gionchetta, Giulia (Fecha de defensa: 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 ...
Mor Roy, Jordi-René (Fecha de defensa: 2019-09-19)
Mediterranean rivers are characterized by high hydrological variability and heterogeneity of habitats, placing themselves amongst arid and temperate climates, and are associated with high biological ...
Vassal'lo Saco, Jara (Fecha de defensa: 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 ...
Joher Sais, Sergi (Fecha de defensa: 2016-01-14)
En aquesta tesi es van descriure els principals fons algals del detrític costaner de la plataforma continental de Mallorca i Menorca (illes Balears, Espanya), i es van proposar mètodes efectius per al ...
Tuulaikhuu, Baigal-Amar (Fecha de defensa: 2016-06-10)
The main aims of this thesis are: i) to evaluate arsenic toxicity in two major, interacting components of the freshwater ecosystem, biofilm and fish, to provide information on environmentally realistic ...