Windermere is the largest natural lake in England. It has a land area of 17 km and a maximum depth of 64 m. Windermere Lake was created 13,000 years ago during the last major ice age, and as a result, is inhabited by Arctic char (Salvinas Alpinus). Arctic species are on the UK’s priority list because of their extremely high biodiversity conservation value.
Arctic char is a type of cold water that is the least resistant to salmonids to raise the temperature associated with the hot climate. Their population levels in both basins of the lake have dropped over the past 20 years. This study assesses that climate change, eutrophication, and invasive species have contributed to the decline of the Arctic species in Windermere.