Researchers from the Doñana Biological Station – CSIC have studied the changes in the distribution of the three species of crayfish introduced in Spain throughout history.
The study was based on historical sources to describe the evolution of the species distributions and the factors that may have influenced the process.

Researchers from 31 Spanish research institutions, coordinated by the InvaNET network and coinciding with the publication of the IPBES report, have identified the 108 alien animal and plant species with the highest risk of having a strong environmental impact in Spain in the next 10 years.

Those include, for example, the Japanese beetle, the roundworm Radopholus similis, or the marine plant Halophila stipulacea. More than 80% of the species identified are not included in the...

Invasive fish have a high disruptive potential in aquatic ecosystems, in which amphibians may be highly impacted due to intense competition and/or predation on their eggs and larvae. Most studies have focused on the effect of large invasive fishes such as salmonids, whereas the effect of smaller fish on amphibians has been seldom investigated. The effects of the invasive Eastern mosquitofish (Gambusia holbrooki) on pygmy newts (Triturus pygmaeus), a species endemic to the Iberian Peninsula,...

A comprehensive framework and guidelines for implementing a recently developed method for classifying alien taxa is presented.

Joint effects of climate warming and other stressors are potentially complex and difficult to predict. In stream ecosystems, exotic riparian species have the potential to alter leaf-shredding detritivorous invertebrate assemblages and leaf litter breakdown due to differences in the quality of litter inputs. This is the case for Eucalyptus plantations, which are widespread, occurring along riparian corridors of streams around the world.