1. Department of Agroecosystem Research, BayCEER; University of Bayreuth; Germany
2. Department of Soil Biochemistry, Institute of Agricultural and Nutritional Science; Martin-Luther University Halle-Wittenberg; Germany
3. Department of Agricultural Soil Science; University of Göttingen; Germany
4. Department of Soil Science of Temperate Ecosystems; Georg-August University of Götingen; Germany