Now showing items 170-181 of 181
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 ...
Navarro Herrero, Leia (Date of defense: 2024-04-15)
[eng] Seabirds and fisheries share the same fishing resources and grounds, resulting in their inevitable interaction, with significant conservation implications for the firsts. Seabirds scavenging on fishery waste modify ...
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 ...