The importance of invisible DOM in Scottish rivers – from headwaters to the coast

Sara Trojahn1, Thomas Wagner2, Juliane Bischoff2, Bryan M. Spears3 and Ryan Pereira2, (1)Heriot-Watt University, Lyell Centre, Edinburgh, EH14, United Kingdom, (2)Heriot-Watt University, Lyell Centre, Edinburgh, United Kingdom, (3)Centre for Ecology & Hydrology, Penicuik, United Kingdom