Mostrando ítems 31-40 de 49
Rovira Torres, Laia (Fecha de defensa: 2013-11-21)
The general aim of the thesis was to improve knowledge of the ecology and taxonomy of estuarine benthic diatoms in a highly stratified Mediterranean estuary, in order to evaluate their potential use as ...
Bernal Berenguer, Susana (Fecha de defensa: 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 (Fecha de defensa: 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 (Fecha de defensa: 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 (Fecha de defensa: 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 ...
Nebra Costas, Alfonso (Fecha de defensa: 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, ...
Mas Martí, Esther (Fecha de defensa: 2014-11-14)
Changes in temperature and precipitation due to climate change are expected to increase stream water temperature and reduce their discharge. Consequently, more streams might face temporality, experiencing ...
Diaz de Quijano i Barbero, Daniel (Fecha de defensa: 2014-07-29)
Comparative studies between different enzyme labelled fluorescence (ELF) protocols and fluorescence quantification methods were performed to improve the quantification of single-cell phosphatase activity ...
Obrador Sala, Biel (Fecha de defensa: 2009-06-03)
Las lagunas litorales son sistemas altamente dinámicos en los que la vegetación sumergida juega un papel estructural y funcional fundamental. En esta tesis se ha realizado una aproximación a la ecología ...
Gómez Gener, Lluís (Fecha de defensa: 2017-02-10)
Inland waters are active components of the global carbon (C) cycle that transform, store and outgas more than half of the C they receive from adjacent terrestrial ecosystems. However, fundamental ...