Mostrando ítems 1-20 de 79
Galobart , Cristina (Fecha de defensa: 2025-02-26)
ENG- Centuries of human activity have degraded Earth’s ecosystems. In response, ecological restoration has been increasingly practised to reverse this decline by re-establishing fully healthy, self-sustaining ecosystems ...
Topolovec, Barbara (Fecha de defensa: 2025-01-29)
ENG- Per- and polyfluoroalkyl substances (PFAS), commonly known as "forever chemicals," are of serious concern due to their strong resistance to environmental degradation and association with harmful health effects, including ...
Munthali, Elias (Fecha de defensa: 2024-10-17)
ENG- Drinking water supply, one of the key ecosystem services provided by rivers, lakes and reservoirs, is under threat due to impacts of extreme climatic events (ECEs) mediated by climate change. The occurrence of ECEs ...
Golo, Raül (Fecha de defensa: 2024-06-28)
The synergy between climate change and biological invasions presents a significant threat to ecosystems worldwide. In the Mediterranean Sea, the proliferation of invasive species has surged since the early 20th century, ...
Meredith, Warren (Fecha de defensa: 2024-03-14)
Coastal wetlands and lagoons are some of the most fluctuating and productive ecosystems in the world. As transition zones between marine and continental environments, they provide numerous ecosystem services, including the ...
Llanos Paez, Oriana Lucia (Fecha de defensa: 2024-02-07)
Non-perennial rivers and streams are defined as systems that cease to flow at some point in space and time along their course. These systems are widespread globally representing more than half of the global river network, ...
Fernández-Vilar, Andrés Lucas (Fecha de defensa: 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 ...
Caballero-Huertas, Marta (Fecha de defensa: 2023-05-26)
Small pelagic fish play an important ecological role mainly due to their contribution in transferring energy from low to higher trophic levels. Likewise, the capture of these species is in many cases an important nutritional ...
Cano-Barbacil, Carlos (Fecha de defensa: 2022-11-18)
Fresh waters are among the most biodiverse ecosystems globally but, at the same time, also the most threatened. Serious threats to freshwater ecosystems are, for example, habitat alteration, invasive alien species and ...
Rodríguez Hidalgo, Claudia Marina (Fecha de defensa: 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 ...
Santamaría Pérez, Jorge (Fecha de defensa: 2021-09-27)
Biological invasions have become one of the most pervasive threats to native ecosystems worldwide, causing species extinctions, disrupting the functioning of ecosystems, altering the provision of critical ecosystem services ...
Verdura Brugarola, Jana (Fecha de defensa: 2021-06-04)
Macroalgal forests represent some of the most productive and biodiverse habitats on Earth. In the Mediterranean Sea, species of the genus Cystoseira sensu lato dominate the well-preserved subtidal rocky habitats where ...
Rubio Gracia, Francesc (Fecha de defensa: 2021-10-27)
This thesis aimed to assess the responses of stream biota to flow alterations, in terms of water velocity increments and reductions of discharge, and to metal pollution. The investigations performed encompassed (i) ...
Bas Silvestre, Maria (Fecha de defensa: 2021-10-19)
Confined coastal lagoons are shallow and dynamic water bodies that play an important ecological role. Considering the severe degradation they have been facing in the last years, understanding the functioning of these ...
Jiménez Ontiveros, Vicente Luis (Fecha de defensa: 2020-06-29)
This thesis develops a quantitative approach to understanding and predicting the spatiotemporal distribution of biodiversity, based on a stochastic version of the theory of island biogeography. Here, I present R package ...
Puig, Xavier, 1975- (Fecha de defensa: 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 ...
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 species being able to ...
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 characteristics, ...
Sabater Liesa, Laia (Fecha de defensa: 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 ...
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 of aquatic ...