Now showing items 155-174 of 174
Lobato Vila, Irene (Date of defense: 2021-03-23)
The oak cynipid inquilines (Hymenoptera: Cynipidae: Synergini, Ceroptresini) are a group of specialized endophytophagous microhymenopterans that develop inside galls induced mainly by other cynipids on Fagaceae trees, ...
Mata Casanova, Noel (Date of defense: 2018-04-18)
Superfamily Cynipoidea (Hymenoptera: Apocrita) includes two very different groups of organismes. Macrocynipoids is a paraphyletic group of parasitoids of wood-bearing beetle larvae, characterized by its big size, and with ...
Bellvert Bantí, Adrià (Date of defense: 2023-11-02)
[eng] Without a shadow of a doubt, adaptive radiation processes have played a major role in our current understanding of how species evolved on our planet. Since the original proposal of the theory of evolution by natural ...
Sitjà Poch, Cèlia (Date of defense: 2020-11-05)
The general outline of this thesis was to assess the potential of the Mediterranean water masses to transport deep-sea fauna towards the Atlantic Ocean. By examining the effects that the bathyal water mases moving from the ...
Bastias Álamo, Elliot (Date of defense: 2018-04-11)
Understanding the dynamics of leaf litter inputs in streams involves assessment of retention, spatial distribution and processing of leaf litter inputs. However, leaf litter dynamics in streams has been mostly studied by ...
Osorio Álvarez, Víctor (Date of defense: 2024-02-06)
[eng] High mountain freshwater ecosystems, such as Pyrenean lakes, are distinguished by their unique ecological characteristics, which encompass their near-pristine undisturbed state, unique biodiversity, and their role ...
Pintanel Costa, Pol (Date of defense: 2018-11-26)
Temperature is likely to be one of the most important abiotic factors given how it affects the physiology of the whole organism and as a consequence, it has an essential role in ecology and evolution. However, how the ...
Soria Extremera, Maria (Date of defense: 2021-05-07)
Temporary rivers (TRs) are dynamic systems that typically shift between flowing, disconnected-pools and dry phases, and represent nearly 50% of the current global river network. Despite TRs support several unique and endemic ...
Soler Garcia, Jordi (Date of defense: 2021-07-13)
Psychotic disorders are psychiatric conditions with a worldwide prevalence of around 4% and a tremendous personal, economic and social burden. As complex phenotypes, psychotic disorders are caused by multiple genetic ...
Velasquez Vacca, Adriana (Date of defense: 2023-03-21)
[eng] Hawaiian green turtles Chelonia mydas were heavily exploited for their fat, meat and eggs by the Polynesians in the pre-contact era and continued to be commercially exploited until 1978 when they were officially ...
Shestakova, Tatiana A. (Date of defense: 2016-11-11)
Forest biomes are major reserves for terrestrial carbon and thus small shifts in the carbon balance of forests could have a large impact on the global carbon cycle. In spite of unambiguous evidence pointing to climate ...
Barría Oyarzo, Claudio (Date of defense: 2017-09-12)
In this thesis, the ecological role of 26 species of abundant, rare and endangered chondrichthyans present in the western Mediterranean has been studied through the study of trophic ecology and main morphological characters. ...
Teutli Hernández, Claudia (Date of defense: 2017-09-14)
En los últimos años los proyectos de restauración se han incrementado por todo el mundo, particularmente los de manglares degradados, pero no se dispone de información suficiente sobre el grado de éxito de las acciones ...
Neto Militao, Teresa Afonso (Date of defense: 2016-10-07)
Animal migration is an amazing widespread phenomenon that forms an essential component of the animal life history. Animals usually migrate to take advantages of changes in resource availability in space and time or to find ...
Sanabria Fernández, José Antonio (Date of defense: 2021-01-13)
The degradation of natural diversity results in the erosion of key systemic properties such as resilience, or the capacity to recover from disturbances. Resilience loss leads to an increase in the fragility and vulnerability ...
López Cristoffanini, Camilo Alonso (Date of defense: 2019-03-11)
Rice (Oryza sativa L.) is without doubt one of the major crops worldwide, as its consumption is continuously increasing, especially in low- and lower-middle-income countries where it is the most important staple. This ...
Tauler Ametller, Helena (Date of defense: 2018-06-14)
En la present tesi s’avaluen les causes del creixement demogràfic de la població d’aufrany (Neophron percnopterus) a Catalunya, així com també s’estudia la influència dels canvis ambientals antropogènics, en especial dels ...
Vincent Sánchez, Celia (Date of defense: 2022-04-08)
Els fruits climatèrics es caracteritzen per un procés de maduració comercial estretament vinculat a la producció d’etilè, que comporta la maduració i sobre- maduració del fruit al llarg de la cadena de producció, tot portant ...
Casadesús Cabral, Andrea (Date of defense: 2022-09-19)
Tots els organismes fotosintètics són capaços de sintetitzar vitamina E, la qual s’acumula de forma ubiqua en els teixits vegetals, tant en els fotosintètics com en els no fotosintètics. Mentre que la vitamina E és un ...
Cotado Pinilla, Alba (Date of defense: 2019-10-31)
Los ecosistemas de alta montaña son puntos calientes de biodiversidad, ya que proporcionan hábitats que albergan una gran variedad de especies únicas. El clima por encima del límite forestal se caracteriza por tener ...