Importance of landscape position and legacy: the evolution of the lakes inTaylor Valley, Antarctica

1. The major factor influencing the chemical composition and evolution of t he major lakes in Taylor Valley, Antarctica, is their location within the l andscape. Present-day microclimatic variation and its manifestation over th e past 6000 years have led to the differences observed in these lakes today . 2. Geographical and topographical variables within the Taylor Valley magnif y subtle changes in the hydrological balances of these lakes. Even short-te rm variation of the surface temperatures and albedo greatly impact the run- off into the lakes, leading to positive or negative water balances. 3. The legacy of past climatic changes has had a profound effect on the eco logy of the lakes today.