Restrepo Ortiz, Claudia Ximena (Date of defense: 2016-02-05)
The annual dynamics of three different ammonia-oxidizing archaea (AOA) ecotypes (amoA gene) and of the SAGMCG-1 (Nitrosotalea-like aquatic Thaumarchaeota) group (16S rRNA gene) were studied by newly ...
Peipoch Güell, Marc (Date of defense: 2014-06-25)
The main goal of this thesis is to investigate how (15)N natural abundances can help understanding the role of different primary uptake compartments (i.e., biofilm, filamentous algae, bryophytes, ...
Tomlinson, Benjamin John (Date of defense: 2016-01-20)
The Systems Approach Framework (SAF) is a methodological framework designed to enhance the efficacy of human decision-making processes within social-ecological systems with regard to sustainability. The ...
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 ...
Bartumeus i Ferré, Frederic (Date of defense: 2005-06-17)
ENGLISH ABSTRACT:<br/><br/>The general aim of this thesis was to develop a theoretical framework in order to study large-scale animal movements and/or dispersal processes as random search strategies. ...
Rodríguez Climent, Sílvia (Date of defense: 2014-12-05)
The Ebro Delta represents the most important wetland area in Catalonia, the second most important in Spain (after Doñana National Park) and one of the most important estuarine zones in Europe. Although ...
Bernal Berenguer, Susana (Date of defense: 2006-06-30)
The amount of dissolved inorganic nitrogen delivered to streams and groundwater has substantially increased in the last decades due to anthropogenic impacts. This fact has stimulated research on processes ...
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, ...
Sanpera Calbet, Isis (Date of defense: 2014-04-11)
Streams are complex and highly diverse ecosystems. Within the stream network, headwater streams (1st to 3rd order) are highly important. Headwaters represent most of the total length, influence the ...
Vázquez Garcia, Eusebi (Date of defense: 2013-10-11)
The studies presented in this thesis focus on the biogeochemistry of dissolved organic matter (DOM) in an intermittent stream in a Mediterranean climate zone, with great emphasis on extreme hydrologic ...