Ballesteros Larrotta, Tania Marcela (Date of defense: 2016-02-08)
The Gran Sabana (GS, Northern South America) is a humid savanna region (treeless savanna intermingled with forest patches) with a long history of vegetation changes under fire disturbances. A number of ...
Merbt, Stephanie Nikol (Date of defense: 2015-01-23)
The main goal of this PhD thesis was the study of the ammonium oxidation process in high nutrient loaded urban streams. We aimed to unveil regulating factors and driving mechanisms from the organisms ...
Muñoz Gràcia, Isabel (Date of defense: 1990-02-23)
La major part de la concentració de carboni i nitrogen que arriba al Mediterrani des de l'Ebre és en forma dissolta, mentre que en el cas del fòsfor la concentració en la forma particulada pot ser més ...
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 ...
Martínez-Muñoz, Marco A. (Date of defense: 2012-06-06)
En la presente investigación, se estudió la estructura espacial de las asociaciones de peces demersales que forman parte de la captura incidental de la pesca de camarón, en el ecosistema costero del ...
Gaudes Saez, Ainhoa (Date of defense: 2011-07-07)
This thesis focuses on the study of the meiofaunal community in streams and rivers of the Mediterranean region. It approaches to a community level from a functional point of view, studying their response ...
Ordóñez Salinas, Jaime (Date of defense: 2010-09-21)
La disponibilidad y calidad del agua que se encuentra en los embalses depende de factores relacionados directamente con las características de la cuenca a la que pertenece el río embalsado, como las ...
Costalago Meruelo, David (Date of defense: 2012-12-10)
In the northwestern Mediterranean anchovy and sardine are among the most ecologically and economically important species. Both species are planktivorous during all their life stages, which could ...
Comerma Gómez, Marta (Date of defense: 2003-03-24)
We studied the planktonic food web in the eutrophic Sau Reservoir (Catalonia, NE Spain) taking account of both spatial as well as temporal scales. We have analysed several longitudinal transects (sampling ...
Romaní i Cornet, Anna M. (Date of defense: 1997-10-21)
Helerotrophic (cetoenzymatic and respiratory activities) and autotrophic (photosynthetic activity) metabolism on epilithic strearn biofilms have been measured, analyzed and studied in this thesis.<br/><br/>The ...