TY - JOUR
T1 - Signal and variability within a Holocene peat bog
T2 - chronological uncertainties of pollen, macrofossil and fungal proxies
AU - Blaauw, M.
AU - Mauquoy, D.
N1 - Acknowledgements
Bas van Geel is thanked for his dedicated approach to research and for sharing his wide palaeoecological knowledge. Dan Charman and an anonymous referee are thanked for their helpful comments. MB's doctoral research (incl. analysis of core EngXV) was sponsored by the Netherlands Organisation for Scientific Research (NWO-ALW), grant no. 750-19-812. Thanks to two anonymous referees for their valuable feedback.
PY - 2012/10/15
Y1 - 2012/10/15
N2 - A single raised bog from the eastern Netherlands has been repeatedly analysed and 14C dated over the past few decades. Here we assess the within-site variability of fossil proxy data through comparing the regional pollen, macrofossils and non-pollen palynomorphs of four of these profiles. High-resolution chronologies were obtained using 14C dating and Bayesian age-depth modelling. Where chronologies of profiles overlap, proxy curves are compared between the profiles using greyscale graphs that visualise chronological uncertainties. Even at this small spatial scale, there is considerable variability of the fossil proxy curves. Implications regarding signal (climate) and noise (internal dynamics) of the different types of fossil proxies are discussed. Single cores are of limited value for reconstructing centennial-scale climate change, and only by combining multiple cores and proxies can we obtain a reliable understanding of past environmental change and possible forcing factors (e.g., solar variability).
AB - A single raised bog from the eastern Netherlands has been repeatedly analysed and 14C dated over the past few decades. Here we assess the within-site variability of fossil proxy data through comparing the regional pollen, macrofossils and non-pollen palynomorphs of four of these profiles. High-resolution chronologies were obtained using 14C dating and Bayesian age-depth modelling. Where chronologies of profiles overlap, proxy curves are compared between the profiles using greyscale graphs that visualise chronological uncertainties. Even at this small spatial scale, there is considerable variability of the fossil proxy curves. Implications regarding signal (climate) and noise (internal dynamics) of the different types of fossil proxies are discussed. Single cores are of limited value for reconstructing centennial-scale climate change, and only by combining multiple cores and proxies can we obtain a reliable understanding of past environmental change and possible forcing factors (e.g., solar variability).
KW - radiocarbon chronologies
KW - fossil proxy signal and noise
KW - raised bog peat deposits
U2 - 10.1016/j.revpalbo.2012.06.005
DO - 10.1016/j.revpalbo.2012.06.005
M3 - Special issue
VL - 186
SP - 5
EP - 15
JO - Review of Palaeobotany and Palynology
JF - Review of Palaeobotany and Palynology
SN - 0034-6667
IS - -
ER -
