The Earth Observation System (EOS) provides the infrastructure needed to study and document ecosystems in the St. Lawrence River Valley (VFSL) in Quebec in order to develop a quantitative predictive model of system-wide interactions in the geobiosphère-climate of the region. A key aspect of EOS is its ability to include a combination of fixed facilities and a flexible mobile infrastructure to observe and analyze the Dynamic Terrestrial System (DES) in remote areas of Quebec. The VFSL climate is characterized by exceptional weather conditions (eg, ice storms), varied uses of land (urban, natural, etc.) and biodiversity flows (species loss and invasion).