Eichenstammlagen in Mooren und Talauen und die Klimaverschlechterung im Subboreal

Abstract

Summary On the basis of dendrochronological synchronization, 145 subfossil oak trunks from three Lower Saxonian bog sites and from the valleys of the rivers Main, Fulda, and Werra were assigned to the period from 2,700 to 1,300 B.C. The simultaneous death of the oaks in the three bogs is attributed to a phase starting about 1,750 B.C., when these areas became waterlogged; it is associated with the general deterioration of the climate during the Subboreal. On the basis of the studies on the oaks from deposits along river valleys, three cycles each of tree growth and death could be demonstrated for the period between 2,700 and 1,300 B.C. The parallelism of this development on the rivers Main, Fulda, and Werra is conspicuous. It is assumed that anthropogenic factors were responsible; an association with the change of climate during the Subboreal cannot be discerned.