The population feed off the lake and remove approximately 400 tonnes of fish annually. The lake it is subject to major eutrophication threats (Mustonen, 2014). At the same time, species such as gannet (Morus bassanus), fulmar {Fulmarus glacialis), shag (Phalacrocorax aristotelis) and black guillemot (Cepphusgrylle) have not seen the same decline.