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| P 4.1 | Tamara Döbele, Reiner Zimmermann, Gregor Aas Influence of climate on radial growth of Sequoiadendron giganteum and Picea abies |
| P 4.2 | Björn Buggle, Martin Kehl, Ulrich Hambach, Slobodan Markovic, Ludwig Zöller, Bruno Glaser Progressive Aridization of SE-Europe since the lower Pleistocene |
| P 4.3 | Julia Köpp, Gerhard Gebauer How do changes of water table level affect CH4 fluxes between soil and atmosphere in an acidic fen? |
| P 4.4 | Julia Köpp, Gerhard Gebauer How do changes of water table level affect N2O fluxes between soil and atmosphere in an acidic fen? |