From hilltop to kettle hole: what trends across the terrestrial-aquatic transition zone are revealed by organic matter stable isotope (δ13C and δ15N) composition?

Zachary E Kayler1,2, Kai Nils Nitzsche3, Arthur Gessler4, Michael L Kaiser5, Carsten Hoffmann6, Katrin Premke2 and Ruth Ellerbrock6, (1)US Forest Service Houghton, Houghton, MI, United States, (2)Inst for Landschaftsstoffdynam, Muncheberg, Germany, (3)Leibniz Centre for Agricultural Landscape Research, Institute for Landscape Biogeochemistry, Müncheberg, Germany, (4)WSL Swiss Federal Institute for Forest, Snow and Landscape Research, Forest Growth and Climate, Birmensdorf, Switzerland, (5)University of Kassel, Environmental Chemistry, Kassel, Germany, (6)Leibniz Centre for Agricultural Landscape Research, Institue of Soil Landscape Research, Müncheberg, Germany