Testing the relationship between Holocene peatland palaeoclimate reconstructions and instrumental data at two European sites |
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| Institution: | 1. School of Geography, University of Plymouth, Plymouth, Devon, PL4 8AA, UK;2. Department of Geography, University of Exeter, Exeter, Devon, EX4 4RJ, UK;3. Institute of Ecology at Tallinn Pedagogical University, Kavade St 2, Tallinn 10137, Estonia;1. State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences, Xi''an 710075, China;2. School of Human Settlements and Civil Engineering, Xi''an Jiaotong University, Xi''an 710049, China;3. The University of the Chinese Academy of Sciences, Beijing 100049, China;4. Regional Climate Group, Department of Earth Sciences, University of Gothenburg, Gothenburg 40530, Sweden;5. Laboratory of Tree-Ring Research, University of Arizona, Tucson, AZ 85721, USA;1. Centre for Environmental Change and Quaternary Research, School of Natural and Social Sciences, University of Gloucestershire, Francis Close Hall Campus, Swindon Road, Cheltenham GL50 4AZ, UK;2. Yorkshire Peat Partnership, Yorkshire Wildlife Trust, 1 St. George’s Place, York, North Yorkshire YO24 1GN, UK;1. Department of Biogeography and Palaeoecology, Faculty of Geographical and Geological Sciences, Adam Mickiewicz University in Poznań, B. Krygowskiego 10, 61-680 Poznań, Poland;2. Faculty of Biology, Adam Mickiewicz University, Umultowska 89, 61-614 Poznań, Poland;3. Department of Geography, Northumbria University, Newcastle upon Tyne NE1 8ST, UK;4. Swiss Federal Research Institute-WSL, Community Ecology Research Unit, Station 2, CH-1015 Lausanne, Switzerland;5. École Polytechnique Fédérale de Lausanne (EPFL), School of Architecture, Civil and Environmental, Engineering (ENAC), Laboratory of Ecological Systems (ECOS), Station 2, CH-1015 Lausanne, Switzerland;6. Institute of Plant Sciences and Oeschger Centre for Climate Change Research, University of Bern, Altenbergrain 21, CH-3013 Bern, Switzerland;7. Laboratory of Wetland Ecology and Monitoring, Faculty of Geographical and Geological Sciences, Adam Mickiewicz University, B. Krygowskiego 10, PL–61 680 Poznań, Poland;1. Freie Universität Berlin, Institute of Biology, Königin-Luise Str 1-3, 14195 Berlin, Germany;2. Berlin-Brandenburg Institute of Advanced Biodiversity Research (BBIB), Germany;3. IUCN UK National Committee Peatland Programme, UK;4. German Centre for Integrative Research (iDiv) Halle-Jena-Leipzig, Germany;5. Helmholtz-Center for Environmental Research – UFZ, Germany;6. Friedrich-Schiller-Universität Jena, Germany;7. Birmingham City University, UK;8. Centre for Ecology and Hydrology, Bangor, UK;9. Universität Greifswald, Greifswald, Germany;10. University of Aberdeen, Aberdeen, UK;11. The James Hutton Institute, Aberdeen, UK;12. Silvestrum, Jisp, The Netherlands;13. Pareto Consulting, Edinburgh, UK;14. Crichton Carbon Centre, Dumfries, UK;15. LandForm Research, Aberdeen, UK;1. Institute of Plant Sciences and Oeschger Centre for Climate Change Research, University of Bern, Altenbergrain 21, CH-3013 Bern, Switzerland;2. Laboratory of Wetland Ecology and Monitoring, Adam Mickiewicz University in Poznań, Krygowskiego 10, 61-680 Poznań, Poland;3. Department of Biogeography and Palaeoecology, Adam Mickiewicz University in Poznań, Krygowskiego 10, 61-680 Poznań, Poland;4. Department of Geobotany and Plant Ecology, Faculty of Biology and Environmental Protection, University of Lodz, 12/16 Banacha Str., Lodz, Poland;5. Department of Geography, Royal Holloway, University of London, UK;6. Department of Zoology, Long-Term Ecology Laboratory, University of Oxford, UK |
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| Abstract: | Peatland surface wetness records provide long Holocene palaeoclimate reconstructions at 101–102 year resolution. They reflect changes in water balance but the relative strength of precipitation and temperature signals are not known. In common with other non-annually resolved records, there has been no testing of the reconstructions against instrumental climate data. In this paper high-resolution records of palaeohydrological change reconstructed from testate amoebae analysis are used to examine critically the relationships between reconstructed water table change, instrumental water table and climate data. A 200-year record of reconstructed water table from northern England shows that the strongest control on reconstructed mean annual water table change is summer precipitation, with summer temperature becoming more important over longer time periods. A 50-year record from Estonia shows that both measured and reconstructed water table records are strongly correlated with summer precipitation. Summer temperature is also correlated with reconstructed water table. We conclude that peatland surface wetness records should be interpreted as primarily reflecting summer precipitation variability, with summer temperature increasingly important in more continental settings. |
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