This book studies the contemporary problems of the Great European Lakes – Ladoga and Onego - on both a regional and a global scale, placing special emphasis on interactions between the limnological and socio-economic environments. Field observations and numerical modeling are used to investigate the responsiveness of both environments to respective impacts, as well as to regional and global climate change. The authors, experts in a wide spectrum of natural and human sciences, use a quantitative approach to assess current and future changes to the interactions between the socio-economic dynamics and limnology of the largest European Lakes compared with the great North American Lakes.