Widespread drying of European peatlands in recent centuries

Graeme T. Swindles* (Corresponding Author), Paul J. Morris, Donal J. Mullan, Richard J. Payne, Thomas P. Roland, Matthew J. Amesbury, Mariusz Lamentowicz, T. Edward Turner, Angela Gallego-Sala, Thomas Sim, Iestyn D. Barr, Maarten Blaauw, Antony Blundell, Frank M. Chambers, Dan J. Charman, Angelica Feurdean, Jennifer M. Galloway, Mariusz Gałka, Sophie M. Green, Katarzyna KajukałoEdgar Karofeld, Atte Korhola, Łukasz Lamentowicz, Peter Langdon, Katarzyna Marcisz, Dmitri Mauquoy, Yuri A. Mazei, Michelle M. McKeown, Edward A. D. Mitchell, Elena Novenko, Gill Plunkett, Helen M. Roe, Kristian Schoning, Ülle Sillasoo, Andrey N. Tsyganov, Marjolein van der Linden, Minna Väliranta, Barry Warner

*Corresponding author for this work

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

Climate warming and human impacts are thought to be causing peatlands to dry, potentially converting them from sinks to sources of carbon. However, it is unclear whether the hydrological status of peatlands has moved beyond their natural envelope. Here we show that European peatlands have undergone substantial, widespread drying during the last ~300 years. We analyse testate amoeba-derived hydrological reconstructions from 31 peatlands across Britain, Ireland, Scandinavia and Continental Europe to examine changes in peatland surface wetness during the last 2,000 years. We find that 60% of our study sites were drier during the period 1800–2000 CE than they have been for the last 600 years, 40% of sites were drier than they have been for 1,000 years and 24% of sites were drier than they have been for 2,000 years. This marked recent transition in the hydrology of European peatlands is concurrent with compound pressures including climatic drying, warming and direct human impacts on peatlands, although these factors vary among regions and individual sites. Our results suggest that the wetness of many European peatlands may now be moving away from natural baselines. Our findings highlight the need for effective management and restoration of European peatlands.

Original languageEnglish
Pages (from-to)922–928
Number of pages7
JournalNature Geoscience
Volume12
Issue number11
Early online date21 Oct 2019
DOIs
Publication statusPublished - Nov 2019

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Keywords

  • wetlands
  • climate change
  • hydrology
  • carbon
  • Europe
  • HYDROLOGICAL CHANGE
  • WATER TABLES
  • MULTI-PROXY
  • CLIMATE-CHANGE
  • HUMAN IMPACT
  • TESTATE AMEBAS
  • LATE HOLOCENE
  • CARBON ACCUMULATION
  • LAST 2000 YEARS
  • RAISED BOG

Cite this

Swindles, G. T., Morris, P. J., Mullan, D. J., Payne, R. J., Roland, T. P., Amesbury, M. J., ... Warner, B. (2019). Widespread drying of European peatlands in recent centuries. Nature Geoscience, 12(11), 922–928. https://doi.org/10.1038/s41561-019-0462-z