Mostrando ítems 135-154 de 180
Arias-LeClaire, Harold (Fecha de defensa: 2018-11-21)
Pre-dispersal seed predation (PDSP, hereafter) significantly reduces plant reproductive output. The negative effects on plant fitness have triggered the development of different strategies to protect the seeds and/or reduce ...
Franch Quintana, Marc (Fecha de defensa: 2016-11-04)
La tortuga de rierol (Mauremys leprosa) és una espècie de tortuga aquàtica continental que es distribueix pel nord d’Àfrica, la Península Ibèrica i una petita part del sud de França. Aquesta distribució coincideix amb una ...
Abril Cuevas, Meritxell (Fecha de defensa: 2017-05-03)
Nowadays, it is recognized that freshwater ecosystems can process a substantial part of the terrestrial organic matter they transport, thereby contributing significantly to global C fluxes. However, the mechanisms behind ...
Canals Delgado, Oriol (Fecha de defensa: 2017-09-08)
La present tesi té com a objectiu l’estudi de la comunitat microeucariota que es desenvolupa en dos sistemes avançats de tractament d’aigües residuals amb alta càrrega amoniacal. La comunitat microeucariota, especialment ...
Domènech Andreu, Marc (Fecha de defensa: 2021-10-29)
Unveiling the patterns and identifying the factors that drive community assembly are key questions in ecology and evolution, especially in the current state of climate change and biodiversity loss. Because of its particular ...
Miret Barrio, Javier Alberto (Fecha de defensa: 2017-05-25)
El malbaratament dels productes frescos suposa la pèrdua de fins a un 45% dels fruits i vegetals. El canvi global i el previst increment de la freqüència de fenòmens meteorològics extrems representaran una major pressió a ...
Tijero Esteve, Verónica (Fecha de defensa: 2019-10-10)
Las cerezas (Prunus avium L.) son frutos muy apreciados por el consumidor, alrededor del mundo, debido a sus características visuales y organolépticas. Como un fruto carnoso con hueso no climatérico, los cambios bioquímicos ...
Montero Serra, Ignasi (Fecha de defensa: 2018-06-07)
Temperate benthic communities face cumulative impacts from multiple stressors acting both at local and global scales. Understanding how local management and ocean warming affect the dynamics and resilience of dominant ...
Gómez Gras, Daniel (Fecha de defensa: 2021-04-23)
Climate change has emerged as one of the greatest and most pervasive threats that our natural heritage will have to face in the coming decades. Together with other anthropogenic pressures such as pollution, overfishing or ...
Poblador Ibáñez, Sílvia (Fecha de defensa: 2018-07-10)
During the last decades, most of the studies based on climate change effects on vegetation physiology have focused on upland forests and species at their border of distribution, since, in both conditions, species are highly ...
Flores Escobar, Elizabeth (Fecha de defensa: 2020-01-10)
Las selvas tropicales mexicanas resguardan la distribución más septentrional de los platirrinos en el Neotrópico, representada por tres especies: el mono aullador de manto (Alouatta palliata), el mono aullador negro (Alouatta ...
Granados García, Maria Elena (Fecha de defensa: 2019-12-18)
Los ecosistemas de la Cuenca Mediterránea han experimentado a lo largo de tiempos ancestrales fuertes y prolongados procesos de degradación, por lo que desde el último tercio del siglo XIX se han realizado forestaciones ...
Castro López, Daniel (Fecha de defensa: 2019-11-22)
Worldwide, biological diversity is declining at an unprecedented rate. Current environmental changes are causing water, ecological and biodiversity crises that, coupled with climate change, are affecting landscape patterns ...
Gamboa Badilla, Nancy (Fecha de defensa: 2017-12-19)
Biological diversity in a global scale has been threaten seriously by anthropogenic disturbances in ecosystems. Changes in land cover and land use affect biodiversity, causing habitat loss and species extinction, or ...
Rezzouk, Fatima Zahra (Fecha de defensa: 2023-09-15)
[eng] Wheat is a major staple food worldwide. Its cultural and economic importance is mainly highlighted in the Mediterranean region, among other regions of the world. However, wheat production is frequently challenged by ...
Ontoria Gómez, Yaiza (Fecha de defensa: 2020-02-14)
Coastal ecosystems are highly threatened worldwide by multiple anthropogenic stressors that act at a range of spatial scales, from local to the global, and adversely affect their ecological functions and associated ...
Estévez Geffriaud, Virginia (Fecha de defensa: 2021-02-03)
This thesis focuses on the development and subsequent application of a seed treatment protocol using a phytosanitary product named T34 Biocontrol (Biocontrol Technologies S.L., Spain) containing the active ingredient ...
Pereira de Felipe, Fernanda (Fecha de defensa: 2020-01-15)
Sexual Segregation (SS) is a phenomenon that occurs across a wide range of animal species, and that had been broadly categorized in spatial/habitat segregation and social segregation. SS of a given species is often related ...
López Acosta, María (Fecha de defensa: 2018-09-21)
Silicon (Si), in its dissolved form of silicic acid (DSi), is a key nutrient in the ocean. The availability of such nutrient in marine ecosystems is regulated through its use by silica-secreting organisms, a variety of ...
Muntán Bordas, Elena (Fecha de defensa: 2016-12-13)
In recent decades, information about past snow avalanches in the Pyrenees is being acquired by searching in different sources. One of these sources are tree rings. In this Ph.D. thesis, dendrogeomorphological techniques ...