Lakes are outstanding "sentinels of change" because they provide future into the consequences and mechanisms of climate change. Paleolimnological is a study of the physical, chemical and biological properties preserved in freshwater, primarily from lakes. Diatoms are unicellular algae and are used extensively in palaeolimnological studies because they are excellent indicators of past environmental conditions. Thus, by inspection of assemblages in sedimentary records, we can make direct and indirect inferences about past environmental conditions. Diatoms are an effective proxy for climate...