Aaron Smith¹, Doerthe Tetzlaff^1,2,3, Marco Maneta⁴,Chris Soulsby^3,2

¹IGB Leibniz Institute of Freshwater Ecology and Inland Fisheries Berlin, Berlin, Germany

²Humboldt University Berlin, Berlin, Germany

³Northern Rivers Institute, School of Geosciences, University of Aberdeen, UK

⁴Department of Geosciences, University of Montana, Missoula, Montana, USA

Correspondence to: Aaron Smith (smith@igb-berlin.de)