Pollenanalytische und 14C-Untersuchungen zur Datierung der Kolluvienbildung in einer lößbedeckten Mittelgebirgslandschaft (Nördlicher Siebengebirgsrand)

Ulrike Lessmann-Schoch, Rosemarie Kahrer & Gerhard W. Brümmer
The pollen content of three loessian colluviums overlying fen soil horiozons in the Siebengebirge near Bonn were investigated. The reconstructed vegetation shows anthropogenic influence. During fen formation dense forest was already replaced by a grazed forest vegetation. Erosion and formation of colluvium were set off by transformation of extensive pasture to arable land or intensive pasture. Fagopyrum esculentum (buckweat) in the fen horizons indicates that the colluviums in the researched area were formed after the...