The introduction of fish into originally fishless high-mountain lakes can strongly alter aquatic food webs. Littoral aquatic macroinvertebrates are heavily preyed upon by fish, yet they also represent an important food resource for several terrestrial and semi-aquatic insectivorous species, including the unique diving passerine, the white-throated dipper ( Cinclus cinclus ). We tested whether competition for this shared resour...

Introduced fish represent a widespread threat to the biodiversity of naturally fishless mountain and alpine lakes, a problem that can be mitigated through mechanical eradication. Recreational anglers, as key stakeholders, could be engaged in eradications via fish removal using angling techniques to raise awareness of high-mountain lake conservation, although the practical and educational effectiveness of such involvement remai...