TY  - JOUR
AU  - Kühl, N.
AU  - Moschen, R.
AU  - Wagner, S.
AU  - Brewer, S.
AU  - Peyron, O.
TI  - A multiproxy record of Late Holocene natural and anthropogenic environmental change from the Sphagnum peat bog Dürres Maar, Germany: implications for quantitative climate reconstructions based on pollen
JO  - Journal of quaternary science
VL  - 25
SN  - 0267-8179
CY  - New York, NY [u.a.]
PB  - Wiley
M1  - PreJuSER-11690
SP  - 675 - 688
PY  - 2010
N1  - We acknowledge funding by the German Research Foundation DFG (grants KU 1973/2-1 and MO 1401/2-1). We thank Dr Georg Heumann, Dr Jorn Parplies, Nils Riedel and Dr Heinz Vos for field assistance, and Prof. Thomas Litt and Dr Bas van Geel for valuable comments. The suggestions of Prof. Keith Barber and an anonymous reviewer greatly improved the manuscript. Stable carbon isotope measurements were carried out by Holger Wissel in the Institute of Chemistry and Dynamics of the Geosphere 4: Agrosphere, Forschungszentrum Julich, Germany. Dr Christa Lankes, Institut fur Nutzpflanzenwissenschaften und Resourcenschutz (INRES), Bonn, kindly provided access to facilities of the institute.
AB  - Pollen data are well established for quantitative climate reconstructions over long timescales, including the Holocene and older interglacials. However, anthropogenically induced environmental change in central Europe was strong during the last 4 ka, challenging quantitative reconstructions of this time period. Here we present quantitative climate reconstructions based on pollen analyses and evaluate them with the peat humification record and the stable carbon isotopes of Sphagnum plant material (delta C-13(cellulose))(.) All analyses were carried out on the same 7.5 m long, largely ombrotrophic peat bog section from Durres Maar. Three different methods were used for the quantitative climate reconstructions on the basis of the pollen data: (1) a probabilistic indicator taxa approach (the 'pdf method'); (2) a modern analogue technique based on pollen taxa from modern surface samples (cMAT); and (3) a modern analogue technique expanded by plant functional types (pMAT). At Durres Maar the peat humification is only affected by peat cutting during the Roman period and the Middle Ages. The stable carbon isotopes are seemingly unaffected by human impact. Thus both proxies provide independent data to evaluate the reconstructions on the basis of pollen data. The quantitative climate reconstructions on the basis of the individual methods are in general relatively similar. Nevertheless, distinct differences between the individual approaches are also apparent, which could be attributed to taxa that reflect human impact on a local to regional scale. While the pdf method appears to be relatively robust to all observed anthropogenically induced vegetation changes, it potentially underestimates climate variability. This method is therefore expected to be independent of local site characteristics and to provide robust quantitative estimates of climatic trends rather than of climatic variability of small amplitude. This is of value for palaeoclimate reconstructions of older interglacials, for which neither multiple sites nor independent climate proxies are available for comparison. Copyright (C) 2009 John Wiley & Sons, Ltd.
KW  - J (WoSType)
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000280448000007
DO  - DOI:10.1002/jqs.1342
UR  - https://juser.fz-juelich.de/record/11690
ER  -