The grass frog (Rana temporaria) – threatened by the alpine newt (Ichthyosaura alpestris) or by habitat loss?
Thesis in the field of herpetology / conservation biology and phylogeography
Current observations suggest that an increased occurrence of the mountain newts (Ichthyosaura alpestris) has a negative effect on grass frog (Rana temporaria) populations. In recent years, the creation of numerous reservoirs for artificial snowmaking of ski runs has led to a significant increase in populations of the mountain newt. However, the mountain newt feeds on the spawn of the grass frog amongst other things.
The question is whether the decline of the grass frog is due to increased competition with the mountain newt or if is caused through other reasons (climate, land use).This situation should be investigated in-situ by observations and experiments. Potential research areas are located in montane regions of the federal state of Salzburg.