Pueyo Puntí, Salvador (Date of defense: 2003-03-25)
This work is the result of a search for general (or nearly general) regularities at ecosystem level, and an exploration of their practical relevance in our relations with the environment.<br/>I began ...
Canals Merseburger, Mª Goretti (Date of defense: 2006-04-24)
A full understanding of nutrient cycling in lotic ecosystems is crucial given the increasing influence of human activities on the eutrophication of streams and rivers. However, existing knowledge about ...
Prado Villegas, Patricia (Date of defense: 2007-02-23)
La revaluació a gran escala espacial (> de 300 Km) i mitjançant mètodes de quantificació directa, del impacte de l'herbivorisme en els ecosistemes de <i>Posidonia oceanica</i> va revelar pèrdues de ...
Andreu Hayles, Laia (Date of defense: 2007-10-25)
Two main purposes divided this Thesis into two parts, taking into account that the need of understanding current climatic fluctuations is still an important request of population living in the 21st ...
Hereu Fina, Bernat (Date of defense: 2007-04-28)
The discipline of ecology is habitually divided up into a whole range of different specialities, and this thesis forms part of what is commonly known as "community ecology" (Diamond and Case 1986). To ...
Ventura Oller, Marc (Date of defense: 2005-01-28)
The aim of this thesis was to describe the life history variability of the assemblage of crustacean zooplankton in Lake Redon, with special emphasis in their life-cycles, ecological characteristics and ...
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. ...
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 ...
Arcos Pros, José Manuel (Date of defense: 2001-12-20)
Seabirds feeding ecology was studied at sea to assess the significance of two commercial fisheries, trawlers (demersal fishery with diurnal activity) and purse seiners (pelagic fishery with nocturnal ...
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, ...