| dc.description.abstract | Multiple proposed pingo remnants in Drenthe have been investigated both lithologically and palynologically to get a better understanding of the regional vegetation cover during the Lateglacial and Early Holocene. Furthermore, the influence of the substratum on the local variations in vegetation development is investigated. The subsurface of Witteveen (ø 200 m, 4 m deep) is located at the edge of an old stream valley in sand from the Peelo formation. Two other locations, Esmeer (ø 600 m, 13 m deep) and Elpermeer (ø 500m, 1 m deep), formed in the till of the Drenthe formation. The pollen diagrams of Esmeer and Witteveen show a Bølling age for the basal fill and a consecutive vegetation development following the general evolution of the Lateglacial to Early Holocene vegetation for the Netherlands. This indicates that the regional vegetation cover must have been very uniform. The Elpermeer section shows only a small section of the Lateglacial to Early Holocene transition starting in the Allerød. When looking at the local taxa Esmeer, Witteveen and Elpermeer show some slight variations, comprising mainly the riparians and aquatics. Additionally, a difference in lithology of the fills is evident: Esmeer and Elpermeer have a larger aeolian sand input compared to Witteveen. On top of that, the Allerød is thinner than the Younger Dryas in all cores except Witteveen, where the Younger Dryas is thinner than the Allerød. These differences in sand content and accumulation rate could account for some of the local vegetational differences. | |
