Abstract Details

ID: 1026
Title: High resolution Δ14C , δ18O and testate amoebae record of rapid climate change and soil carbon storage from the Bargerveen raised bog, the Netherlands.
Content:

The Bargerveen raised bog, situated in the east of the Netherlands near the German border, has been extensively studied over the past 40 years. It is only since accelerator technology became available for 14C analysis that very high resolution studies, based on microfossils and plant macrofossil remains became possible.
The peat profile was extensively sampled during autumn of 2010 and analysed in detail for macro-fossils, testate amoebae, Δ14C and δ18O. This new research project is focussed on the local vegetation and hydrological changes in response to the well known global climate shifts of 2800 yrs BP and a regional climate shift around 2100 yrs BP. We compare the atmospheric 14C record (reflecting solar activity) and δ18O of remains of Sphagnum spp., with the changing local hydrology of the bog reconstructed from plant macrofossils and testate amoebae. Extensive 14C AMS Wiggle Match Dating allowed a precise chronology for the palaeoclimate and palaeohydrology proxies, and calculation of accumulation rates of peat (soil carbon) at the Bargerveen raised bog. We use this new evidence to test the relationship between Δ14C (solar activity) and changes in climate, especially rainfall and moisture source trajectories for northwest Europe.
 

Session: 12 Integrating peatland data for past climate and carbon cycle dynamics
Authors: Henk Heijnis
Bas van Geel
Dan Charman
Gareth Thompson
Presenter:Henk Heijnis
Type: poster