Drought induced tree mortality – a tree‐ring isotope based conceptual model to assess mechanisms and predispositions. Issue 2 (6th April 2018) - Gessler, Arthur; Cailleret, Maxime; Joseph, Jobin; Schönbeck, Leonie; Schaub, Marcus; Lehmann, Marco; Treydte, Kerstin; Rigling, Andreas; Timofeeva, Galina; Saurer, Matthias