1. Acharya KP, Vetaas OR, Birks HJB (2011) Orchid species richness along Himalayan elevational gradients. J Biogeogr 38:1821–1833
2. Ammann B (1985) Introduction and palynology: vegetational history and core-correlation at Lobsigensee (Swiss Plateau). In: Lang G (ed) Swiss lake and mire environments during the last 15,000 years. J Cramer, Vaduz, pp 127–134
3. Ammann B (1989) Late-Quaternary palynology at Lobsigensee—regional vegetation history and local lake development. Dissertationes Botanicæ 137:1–157
4. Ammann B, Chaix L, Eicher U, Elias SA, Gaillard M-J, Hofmann W, Siegenthaler U, Tobolski K, Wilkinson B (1983) Vegetation, insects, molluscs and stable isotopes from late Würm deposits at Lobsigensee (Swiss Plateau). Rev Paléobiol 2:221–227
5. Ammann B, Birks HJB, Brooks SJ, Eicher U, von Grafenstein U, Hofmann W, Lemdahl G, Schwander J, Tobolski K, Wick L (2000) Quantification of biotic responses to rapid climatic changes around the Younger Dryas—a synthesis. Palaeogeogr Palaeoclim Palaeoecol 159:313–347