Now showing items 2952-2971 of 11001
Masó Planas, Albert (Date of defense: 2018-01-26)
En la primera parte de la tesis, intentamos comprobar la idea generalizada de que la vegetación determina las características de la comunidad de mariposas, para lo cual realizamos una investigación en un área geográfica ...
Ordóñez Sánchez, Víctor (Date of defense: 2013-11-15)
Las invasiones biológicas son un tema de especial importancia para los biólogos marinos. Estas invasiones pueden causar daños tanto ecológicos como económicos. El Mar Mediterráneo es uno de los ecosistemas marinos con más ...
Prat i Fornells, Narcís (Date of defense: 1978-06-21)
Se estudian los quironómidos desde diferentes ángulos tanto su sistemática como algunos aspectos de su ecología en los embalses españoles. La tesis se divide en tres partes: dos de sistemática y una de ecología. En la ...
Román Moreno, Sara (Date of defense: 2017-09-22)
Submarine canyons are major topographic structures forming deep incisions in shelfs and continental margins around the globe. Due to their topographic characteristics, canyons influence both local hydrodynamic conditions ...
Nebra Costas, Alfonso (Date of defense: 2016-01-29)
The Ebro Delta-Estuary complex is one of the largest wetland areas in the western Mediterranean, and it is considered one of the most important estuarine zones in Europe. In 2013, the Ebro watershed, including its deltaic ...
Giménez, Joan (Date of defense: 2018-07-13)
This thesis fills important gaps of knowledge that will help to develop a proper conservation strategy for cetaceans in southern Iberian waters. We were able to define different ecological management units for bottlenose ...
Kersting, Diego K. (Date of defense: 2014-02-07)
Marine ecosystems are declining worldwide threatened by an increasing number of stressors. Global change-related disturbances have highlighted the need of new complementary conservation measures; for which the knowledge ...
Fernández Guerra, Antonio (Date of defense: 2013-02-15)
Ammonia oxidation, the first and the rate-limiting step in nitrification, is one of the cornerstones of the cycle. Members from the bacterial and archaeal domains are key players in ammonia oxidation in many different ...
Baeta Alacio, Marc (Date of defense: 2015-04-29)
Bivalves living in large aggregations of individuals (reefs or beds), such as mussels, clams, cockles and some high trophic predators such as sea stars, play an essential ecological role in the structure, integrity, ...
Cid Puey, Núria (Date of defense: 2010-11-18)
The effects of the main anthropogenic impacts in the fluvial ecosystem of the lower Ebro River are evaluated along the five chapters of the present thesis, using the benthic macroinvertebrate community as a bioindicator. ...
Bonada i Caparrós, Núria (Date of defense: 2003-04-02)
The main objective of this work has been to determine the structure of the macroinvertebrate communities in mediterranean rivers at different scales, organization and taxonomical levels. To achieve that, an appropriated ...
Santos Santos, Javier H. (Date of defense: 2019-01-17)
The thesis "Ecomorphological discrimination of vertebrate sister species with recent phylogenetic divergence using novel non-destructive morphometric methods” compares morphological evolution during syntopic adaptive ...
Asensio, David (Date of defense: 2019-12-17)
Aquesta Tesi neix essencialment de la voluntat d’obtenir el màxim potencial informatiu possible de l’estudi del mobiliari ceràmic, sens dubte un dels elements de cultura material més abundant en el context de ...
Serrano Gutiérrez, Mònica (Date of defense: 2008-10-20)
In this study we analyse some aspects of the interdependences between the economy and the environment by applying the input-output approach. Although economic activity affects the environment in many ways, in this study ...
Aerts, Céline (Date of defense: 2020-09-14)
The World Health Organization (WHO) has identified over 20 neglected tropical diseases (NTDs), affecting 1.5 billion people worldwide (Uniting to combat neglected tropical diseases, 2017). While being all infectious diseases, ...
Daví-Arderius, Daniel (Date of defense: 2020-10-09)
Environmental awareness is of increasing concern for society and leads heavy pressure to adopt challenging political decisions. In this context, electricity systems are facing a massive transformation from the replacement ...
Colom Jaén, Artur (Date of defense: 2009-10-22)
A mediados de los 90 emerge un cuestionamiento del enfoque del ajuste estructural promovido por el Banco Mundial y el FMI en los países en desarrollo, especialmente en África, que lleva a estas instituciones a cambiar su ...
Hernández Rodríguez, Isidro (Date of defense: 2021-10-26)
Los análisis comparativos de las estructuras y de los sistemas impositivos en el ámbito mundial detectan diferencias substanciales entre conjuntos de países. En los últimos sesenta años, de manera sistemática, encuentran ...
Fernández Sevillano, Jaime (Date of defense: 1990-01-01)
A continuación exponemos en forma resumida el propósito y contenido de esta Tesis. La Parte Teórica comprende: En el capítulo 2 trataremos de repasar cual ha sido la relación entre economía y psicología. Veremos como ...
Villanueva Álvarez, Laura (Date of defense: 2005-12-22)
Microbial mats are prokaryotic communities that are thought to represent the present-day analogues of the first ecosystems on Earth. Their study reveals microbial strategies for survival under a broad range of environments. ...