1. Department of Palynology and Climate Dynamics; University of Goettingen; Goettingen Germany
2. Department of Biogeochemistry and Geology; Leibniz Centre for Tropical Marine Research (ZMT); Bremen Germany
3. Department of Biological Science; Goshen College; Goshen Indiana
4. Department of Soil Science; University of Jambi; Jambi Indonesia
5. Department of Soil Science and Land Resource; Bogor Agriculture University (IPB); Bogor Indonesia