The summer diet of the Iberian chub (Squalius pyrenaicus) was studied in the upper Yeguas river (Córdoba, Spain). The chub showed a wide trophic range, and a pronounced generalist character. The main trophic categories ...

We measured various fish bones from 13 Iberian freshwater fish species and one hybrid species. Original total body lengths were then back-calculated using bone measurements. Bones usually found in prey remains left by ...

Two recent works related Eurasian otter (Lutra lutra (L., 1758)) trophic patterns over large areas with the stability of aquatic ecosystems. Higher levels of instability lead to reduced availability and (or) predictability ...

Seasonal patterns of use of coastal resources by otters have been Studied, simultaneously performing diet analyses and spraint counts (expressed as marking intensity, MI). In spite of the small size of the study area. ...

This work updates the spatial distribution of the exotic fish species in the Guadiana river basin. To this effect, 241 river stretches and 37 reservoirs and lakes were sampled, corresponding to 261 UTM 10 × 10 Km squares. ...

Extremadura posee elevados valores de conservación y biodiversidad, aunque una parte importante de su red fluvial está formada por ríos mediterráneos intensamente regulados, con funcionamiento ecológico muy modificado, a ...