Browsing Departament de Ciències Ambientals by Title

Now showing items 64-73 of 73

Signal processing of microstructure profiles: integrating turbulent spatial scales in aquatic ecological modeling

Piera Fernández, Jaume (Date of defense: 2002-03-08)

The main objective of this thesis was the integration of microstructure information in synoptic descriptors of turbulence, that reflects the mixing processes. Turbulent patches are intermittent in space and time, but they ...

Sistema radicular de Quercus suber: estructura i desenvolupament

Verdaguer Murlà, Dolors (Date of defense: 1995-01-12)

This thesis is a study of the structure and development of the young radicular system of Quercus suber. The work is focused on the sprouting capacity of the radicular system of the seedling, the development and organization ...

Soil and vegetation carbon dynamics (stocks and fluxes) and litter decomposition in a Mediterranean non-tidal salt marsh

Carrasco Barea, Lorena (Date of defense: 2020-10-09)

Salt marshes are considered key ecosystems for climate regulation because they have a high carbon sequestration capacity. However, most studies of carbon sequestration capacity of these ecosystems have been performed in ...

Stochastic models and the temporal dynamics of ecological communities

Jiménez Ontiveros, Vicente Luis (Date of defense: 2020-06-29)

This thesis develops a quantitative approach to understanding and predicting the spatiotemporal distribution of biodiversity, based on a stochastic version of the theory of island biogeography. Here, I present R package ...

The invasion of the Argentine ant Linepithema humile in Mediterranean ecosystems: impacts and efficacy of winter aggregations extirpation as a control methods

Enríquez Lenis, Martha Lucía (Date of defense: 2012-12-20)

We studied the characteristics and effects of the Argentine ant invasion on the native ants and other arthropods. Moreover, we assessed the effects of L. humile winter nest aggregations extirpation on its population dynamics. ...

The use of pulse amplitude modulated fluorescence techniques for metal toxicity assessment in fluvial biofilms

Corcoll i Cornet, Natàlia (Date of defense: 2012-02-20)

Metal pollution in rivers is in great concern with human activities in the fluvial watershed. This thesis aims to investigate the potential use of chl-a fluorescence parameters as biomarkers of metal toxicity, and to find ...

Towards the implementation of ecosystem management: a multi-level assessment of a small scale Mediterranean multi-specific fishery

Dimitriadis, Caterina (Date of defense: 2015-10-16)

Fisheries are complex systems, in which the process of assessment and management should explicitly consider the ecological, social and economic attributes of the system. For a responsible and sustainable management of ...

Unraveling the success of invaders: biotic and abiotic factors determining the invasibility of Mediterranean benthic assemblages by Caulerpa cylindracea

Santamaría Pérez, Jorge (Date of defense: 2021-09-27)

Biological invasions have become one of the most pervasive threats to native ecosystems worldwide, causing species extinctions, disrupting the functioning of ecosystems, altering the provision of critical ecosystem services ...

Variability in the health status and reproductive traits of European sardine stocks in the Mediterranean. Implications for fishery management

Caballero-Huertas, Marta (Date of defense: 2023-05-26)

Small pelagic fish play an important ecological role mainly due to their contribution in transferring energy from low to higher trophic levels. Likewise, the capture of these species is in many cases an important nutritional ...

Zooplankton structure and dynamics in Mediterranean marshes (Empordà Wetlands): a size-based approach

Brucet Balmaña, Sandra (Date of defense: 2003-11-04)

Zooplankton community structure (composition, diversity, dynamics and trophic relationships) of Mediterranian marshes, has been analysed by means of a size based approach. <br/>In temporary basins the shape of the biomass-size ...