Anifeiliaid ymledol a’u heffeithiau ar ecosystemau dŵr croyw Prydain (Invasive animals and their effects on British freshwater ecosystems)

The introduction of non-native species presents one of the most significant threats facing biodiversity worldwide. Freshwater ecosystems are particularly affected, due to the widespread introduction of species to rivers and lakes for aquaculture and fishing. This article describes non-native, freshwater animals that are present and invasive in Britain, as well as those which are likely to become established over the coming years. The effects of these animals on freshwater ecosystems are explained, and problems that are faced when attempting to manage invasive species are highlighted. Additionally, the effects of climate change and other stressors on the future distribution of non-native species are discussed.