10.4. DIWA-webinaari

Mehran Mahdian, University of Eastern Finland, mehran.mahdian@uef.fi Finland is often called the “land of a thousand lakes” – in reality, it has nearly 188,000 lakes. Many of them lie in remote northern regions where they quietly support wildlife, fisheries, and provide clean drinking water for local communities. But despite their importance, understanding what happens inside these lakes is not always

Parsa Parvizi, University of Oulu, parsa.parvizi@oulu.fi Beneath every stream network lies a hidden force: groundwater, quietly shaping life below the surface. This underground water helps regulate stream temperature and supports the health of river ecosystems, from fish to plants. Studying how groundwater and surface water interact is crucial because these