Mostrando ítems 11-20 de 38
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 ...
Urrea Clos, Gemma (Fecha de defensa: 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 ...
Sales Villalonga, Marta (Fecha de defensa: 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 ...
Bonet Sánchez, Berta (Fecha de defensa: 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 ...
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 ...
Àvila Izquierdo, Núria (Fecha de defensa: 2017-05-26)
Autotrophic and heterotrophic microorganisms are two essential functional units in the microbial food web of aquatic ecosystems. They play a key role in nutrient cycling and carbon flow and influence ...
Dimitriadis, Caterina (Fecha de defensa: 2015-10-16)
Fisheries are complex systems, in which the process of assessment and management should explicitly consider the ecological, social and economic attributes of the system. For a responsible and sustainable ...
Latorre Espeso, Dani (Fecha de defensa: 2019-10-17)
Phenotypic plasticity is the adaptive response of a genotype to presenting different types of phenotypes in response to environmental changes. These adaptive responses can contribute to a particular ...
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 ...