Mostrando ítems 126-145 de 181
Hamdane, Yassine (Fecha de defensa: 2023-09-14)
[eng] The main driving force behind crop research is to ensure food security. Climate change, which affects most crops and increases the risk of disease and famine, is addressed in this notion. The Food and Agriculture ...
Pastor Prieto, Marina (Fecha de defensa: 2023-03-10)
[eng] Gelatinous zooplankton has been studied in the Western Mediterranean for a long time, however, its spatial structure has been mainly addressed in coastal areas, during spring and summer periods. Hence, information ...
Pagès Escolà, Marta (Fecha de defensa: 2019-12-09)
Marine ecosystems are directly threatened by multiple and interactive human stressors at global and local scales. Hence, it is vital to study biodiversity and ecological patterns through a multi-disciplinary approach, from ...
Giménez Grau, Pau (Fecha de defensa: 2016-11-04)
The main objectives of this dissertation were (a) to determine the effects of nitrogen (N) and phosphorus (P) fertilization on the growth of microalgal groups of periphyton and phytoplankton, and (b) to evaluate some ...
Buxalleu Serras, Carme (Fecha de defensa: 2023-03-17)
[cat] Atenent als fets de que la classificació europea s’ha desenvolupat, principalment, dins les fronteres de cadascun dels països portant a notables diferències dels corresponents tipus de vegetació -fins i tot entre ...
Quirós Garzón, Carolina (Fecha de defensa: 2023-10-18)
[spa] El objetivo general de esta tesis ha sido estudiar el comportamiento solitario y social de un grupo de ocho delfines mulares (Tursiops truncatus) en cautividad (Zoo de Barcelona), durante dos periodos reproductivos, ...
Khan, Hares (Fecha de defensa: 2021-09-16)
Inland waters are relevant components of the global carbon cycle acting as hot spots for biogeochemical processes by which carbon is stored, transformed, and outgassed to the atmosphere. Therefore, less than half of the ...
Ferreres Contreras, Irene (Fecha de defensa: 2020-06-26)
Rice belongs to the Poaceae family and Oryza genus. The genus Oryza comprehends 24 species, being 22 wild and 2 cultivated. These two cultivated species correspond to Oryza sativa, originated in Asia, nowadays cultivated ...
Badia Boher, Jaume Adrià (Fecha de defensa: 2023-09-15)
[eng] In this thesis, we took advantage of recent advances in the degree of sophistication and flexibility of population models to study the population dynamics and conservation of long-lived species. As main objective, ...
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 ...