Universitat de Girona
Now showing items 1-16 of 16
We study the effect of organic farming practices on several taxa in olive groves and vineyards. Sessile organisms show a stronger response to treatment, their diversity being higher in organic vineyards. Vagile organism ...
A direct consequence of sea warming in the Mediterranean is a increase in the abundance of thermo-tolerant species fish species such as Sphyraena viridensis, Pomadasys incisus, Pomatomus saltatrix and Trachinotus ovatus. ...
Inland waters are amongst the most diverse and impacted ecosystems globally, and they host many endangered taxa. Cyprinodontiforms are at the forefront of endangered freshwater fishes in Europe, with more than 80% of the ...
Before 1910, the fish assemblage of Banyoles Lake (Catalonia, Spain) consisted of: eel (Anguilla anguilla), Mediterranean barbel (Barbus meridionalis), freshwater blenny (Bennius fluviatilis), three-spined stickleback ...
L'Estany de Banyoles, sistema peculiar tant des del punt de vista de la seva formació geològica com de les seves característiques limnològiques, conté actualment una comunitat de peixos profundament modificada respecte de ...
The winter nesting behaviour of the Argentine ant seems to be intrinsic, and its success as an invasive species does not rely on a shift in social organization, nor on a shift in its mode of nesting associated with the ...
Les inflorescències on és present la formiga argentina reben menys visitants, a les zones envaïdes, a més, desapareixen la majoria d'espècies de formigues autòctones, algunes de les quals podrien ser pol·linitzadores ...
L'objectiu d'aquesta tesi és de'explorar alguns aspectes de l'impacte humà sobre les poblacions de peixos i altres components dels ecosistemes fluvials Mediterranis de Catalunya. Es va mostrar com els peixos del Riu Llobregat ...
This PhD thesis evaluates the links between parasitism, condition and reproduction of mature female individuals of three of the most captured fish species in the western Mediterranean Sea: European hake, Merluccius merluccius; ...
La present tesi intenta obtenir noves dades referents a la biologia i ecologia de la formiga argentina que poden arribar a ser cabdals per al disseny o millora de noves metodologies de control de l'expansió de la plaga en ...
Wildfires are natural perturbations that affect the structure of the landscape and biodiversity. In the Mediterranean basin, wildfires occur especially in hot seasons. However, in recent years the number of fires with the ...
Fresh waters are among the most biodiverse ecosystems globally but, at the same time, also the most threatened. Serious threats to freshwater ecosystems are, for example, habitat alteration, invasive alien species and ...
En aquest treball de tesi doctoral es descriu l'estructura gonadal, gametogènesi i cicle anual de Scorpaena porcus, S. scrofa i S. elongata per tal d'aprofundir en el coneixement dels diferents graus d'especialització dins ...
We investigated whether the Argentine ant (Linepithema humile) invasion modifies the trophic web of the sclerophyllous Mediterranean forests to the point that impacts co-occurring bird communities. We studied if the invaded ...
Exploited marine fish species with an affinity for cold waters inhabiting close to the warmer edge of their distribution area are exposed to stress caused by fishing and climate change. Three case studies of “cold water ...
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 ...
