Ara mostrant els elements 20-39 de 181
Zenteno Devaud, Lisette (Data de defensa: 2016-07-18)
Los depredadores marinos pueden cambiar su dieta a través del tiempo como consecuencia de cambios antropogénicos y naturales, por lo que un punto de referencia histórico aporta información básica y necesaria para comprender ...
Castro i Català, Marta de (Data de defensa: 2017-09-22)
Schizophrenia is a severe and complex mental disorder that results in an inability to cope with life’s ordinary demands and routines. Normally, it appears in late adolescence, more frequently and developing earlier in ...
Avià García, Yasmina (Data de defensa: 2021-12-10)
El trabajo que se presenta en esta Tesis Doctoral se centra en el estudio de la topografía dental de los molares superiores e inferiores de diversas especies de primates de la tribu Papionini. El objetivo general es ...
Tarrats Sada, Pol (Data de defensa: 2018-01-12)
The study of past ecological changes is highly useful for understanding how ecosystems have responded to climate and human-induced disturbances. It is thus relevant in the context of climate change, as it allows several ...
Llorach Parés, Laura (Data de defensa: 2019-11-29)
The potential of natural products in general, and marine natural products in particular, as pharmacological entities has been widely demonstrated in recent years. Marine benthic ecosystems contain an extraordinary range ...
Marqués Feixa, Laia (Data de defensa: 2022-06-03)
El maltrato infantil es un fenómeno muy complejo que afecta de manera integral al individuo y se asocia con diferentes problemas de salud mental en la infancia, adolescencia y adultez. Aunque el estudio del trauma relacional ...
Peso Fernández, Marcos (Data de defensa: 2018-12-14)
The Pyrenean frog (Rana pyrenaica) is a Pyrenees endemic species, mostly distributed between Navarra and Aragón, and recently was described in few streams of France. The typical habitat of the species is mountain streams. ...
Córdoba González, Darío Eliecer (Data de defensa: 2022-07-18)
The biodiversity of a country is part of its natural wealth and the study of it is fundamental for a scientific researcher, such is the case of the Panamanian marine coasts in which there has not been an exhaustive taxonomic ...
Jara Chiquito, Juan Luis (Data de defensa: 2023-01-13)
[cat] La vespeta del castanyer, Dryocosmus kuriphilus Yasumatsu (Hymenoptera: Cynipidae) és una espècie cedidògena originària de l'est de la Xina, que ataca tots els arbres del gènere Castanea (Fagaceae) col·lectant-se per ...
Cuscó Martinez, Francesc (Data de defensa: 2019-01-11)
La conservació de les espècies amenaçades requereix entendre els factors que determinen la selecció de l’hàbitat, la supervivència i la productivitat de les seves poblacions. Sota l’actual context d’intensificació agrícola, ...
Palacín Lizarbe, Carlos (Data de defensa: 2019-07-30)
The reservoir size and pathway rates of the nitrogen (N) cycle have been deeply modified by the human enhancement of N fixation, atmospheric emissions, and climate warming, doubling the reactive nitrogen (Nr) available in ...
Navarro Arenas, Miriam (Data de defensa: 2021-10-07)
El aumento de la población mundial en las últimas décadas, junto con la disminución de las tierras cultivables, ha puesto de manifiesto la necesidad de aumentar la producción agrícola para satisfacer la creciente demanda ...
Ramos de Fuentes, Eduardo (Data de defensa: 2018-09-28)
Rice (Oryza sativa) is the most important crop for human direct consumption, but its yield and production are strongly affected by biotic and abiotic stresses. Rice is the most salt-sensitive cereal and in addition, salinity ...
Hooghvorst, Isidre (Data de defensa: 2021-04-28)
The general aim of this PhD thesis was to study, develop and apply different breeding techniques in melon species in order to produce new commercial cultivars. The three specific objectives of this thesis are: 1. To ...
Gort Esteve, Araceli (Data de defensa: 2023-09-22)
[eng] Deer populations are increasing in recent times. One of the main causes is the abandonment of agriculture and extensive livestock farming. This thesis focuses on expanding our knowledge about the biology of red deer ...
Medina Canzio, Susan Mery (Data de defensa: 2017-09-15)
Los futuros cambios climáticos ocasionarán una subida de las temperaturas y déficit en la disponibilidad de agua para la agricultura así como mayor concentración de CO2 en la atmósfera, donde el estatus hídrico y el flujo ...
Sampedro i Roig, Nagore (Data de defensa: 2018-02-23)
Les dinoflagel·lades són un dels grups majoritaris del fitoplàncton marí. Algunes espècies d’aquest grup produeixen proliferacions que causen diversos efectes no desitjats tant en l’ecosistema marí com a l’espècie humana. ...
Guarch Ribot, Alba (Data de defensa: 2017-07-24)
Dissolved organic matter (DOM) is an important source of carbon for aquatic microorganisms and it regulates many biogeochemical processes. Therefore, changes in river DOM concentration and properties could notably affect ...
Mihaela Stefan, Laura (Data de defensa: 2016-12-12)
Feather mites are among the most abundant and commonly occurring bird ectosymbionts. They live permanently on the host body, are adapted to inhabit well-defined host microhabitats and are found in almost all avian groups. ...
Khamis, Abdulqader (Data de defensa: 2023-10-24)
[eng] The principal challenge of conserving marine megaherbivores is that they typically range over extensive areas that far exceed the spatial scales of conventional management, transcending protected areas, and often ...