Universitat de Barcelona
Now showing items 21-40 of 96
This thesis fills important gaps of knowledge that will help to develop a proper conservation strategy for cetaceans in southern Iberian waters. We were able to define different ecological management units for bottlenose ...
The thesis "Ecomorphological discrimination of vertebrate sister species with recent phylogenetic divergence using novel non-destructive morphometric methods” compares morphological evolution during syntopic adaptive ...
En aquesta tesi s'han estudiat els efectes dels marges i de la gestió agrícola sobre l'abundància dels àfids i sobre el control biològic exercit per diversos enemics naturals, però sobretot pels parasitoides himenòpters. ...
El objetivo general de esta tesis ha sido evaluar los efectos de determinados contaminantes sobre la reproducción, el estrés fisiológico y el comportamiento dos especies de ciprínidos autóctonas del NE de Cataluña y el SE ...
[eng] The overall objective of this thesis is to explore the effects of DD on C cycling in reservoirs because there are many dams under removal and many more predicted in the near future. To answer this question, we conducted ...
A central theme in ecology and evolution is to understand whether and how species respond to environmental changes. The amount of studies focusing on how species might cope with climate change has been steeply growing, ...
Water availability is the primary driver of dissolved organic matter (DOM) dynamics in intermittent rivers and ephemeral streams (IRES). Therefore, current research manifests the global influence of flow disruption on ...
Intermittent rivers and ephemeral streams (IRES) are watercourses that naturally and periodically cease to flow. They represent more than half of the global river network and are expanding due to global change. In this ...
Los océanos están sufriendo un cambio muy rápido. Esto evidencia la necesidad de estudiar especies a largo plazo que puedan informarnos sobre la magnitud y dirección de estos cambios. Los ambientes oceánicos son especialmente ...
Les espècies exòtiques invasores constitueixen una de les majors amenaces a la biodiversitat global. Aquelles àrees que acullen un gran nombre d’espècies natives, i constitueixen per tant punts calents de biodiversitat ...
En aquesta tesi ens plantegem aprofundir en el coneixement de l’estructura funcional i dels processos que expliquen la diversificació de les comunitats vegetals alpines pirinenques, i que regeixen el funcionament i la ...
Los insectos están presentes en todos los ecosistemas terrestres, donde desempeñan importantes funciones ecológicas y están en constante interacción con las actividades humanas, siendo algunos beneficiosos para ellas y ...
En esta tesis se ha estudiado la efectividad de los programas de enriquecimiento ambiental estructural y social aplicados a dos especies de primates, el mangabey de collar (Cercocebus torquatus torquatus) y el dril ...
One of the most fascinating aspects of birds is their capability of migrate from one area to another throughout the year. Unravelling the patterns and processes involved in the evolution of migration is paramount to ...
Mercury pollution is of great concern for the scientific community due to their ubiquity and persistence in the environment. Its bioaccumulation and biomagnification capacities along food webs enhance their toxicity both ...
Biodiversity patterns are results of ecological and evolutionary processes. Understanding the forces shaping biodiversity patterns help to predict the responses of ecosystems to environmental change. Considering the role ...
[eng] The invasion of alien species is a major global threat to ecosystems, with significant impacts, especially on freshwater ecosystems. The species diversity in freshwater ecosystems has significantly declined worldwide, ...
Unraveling the proximate processes that have shaped genetic variation of populations and led to lineage diversification and speciation is fundamental to understand the origin of present-day biodiversity patterns at both ...
La introducció dels cultius que proveeixen serveis agroecològics (ASC) és una de les estratègies àmpliament reconeguda per millorar la sostenibilitat dels sistemes de cultiu. Tot i això, algunes autores i autors han ...
Environmental authorities, conservation professionals, and several other social sectors frequently demand scientifically sound information to inform policy and decision-making processes. Beyond national or subnational ...
