1. Agroscope, Research Division Agroecology and Environment, Plant-Soil-Interactions, Reckenholzstrasse 191, 8046 Zürich, Switzerland.
2. Department of Plant and Microbial Biology, University of Zurich, Zollikersrasse 107, 8008 Zürich, Switzerland.
3. Department of Biology, Lund University, Ecology Building, SE-223 62 Lund, Sweden.
4. Department of Evolutionary Biology and Environmental Studies, University of Zurich, Winterthurerstrasse 190, 8057 Zürich, Switzerland.
5. Agroscope, Research Division Competitiveness and System Evaluation, Life Cycle Assessment, Reckenholzstrasse 191, 8046 Zürich, Switzerland.
6. Agroscope, Competence Division for Plants and Plant Products, Ecotoxicology, Müller-Thurgau-Strasse 29, 8820 Wädenswil, Switzerland.
7. Laimburg Research Centre, Laimburg 6, Auer/Ora BZ 39040, Italy.
8. Department of Environmental Sciences, University of Basel, Bernoullistrasse 32, 4056 Basel, Switzerland.
9. University of Bern, Institute of Plant Sciences, Altenbergrain 21, 3013 Bern, Switzerland.
10. Soil Science and Geomorphology, Institute of Geography, University of Tübingen, Rümelinstrasse 19-23, 72070 Tübingen, Germany.
11. Department of Environmental Systems Science, ETH-Zürich, Universitätstrasse 2, 8092 Zürich, Switzerland.