One of the issues with being an island nation is the lack of species due to the number of barriers species face. This isn’t helped by the fact that the majority of the UK was covered by ice for most of the Pleistocene. These barriers were particularly hard for animals such as amphibians and reptiles to cross due to their ectothermic lifestyle and lack of flight. Compared to mainland Europe, we have a reduced diversity of amphibian and reptile species. Growing up in this landscape, I was taught that there were only 12 native terrestrial species of herptiles, 6 amphibians and 6 reptiles. Leer más.