Ecohydrological feedbacks confound peat-based climate reconstructions

Graeme T. Swindles, Paul J. Morris, Andy J. Baird, Maarten Blaauw, Gill Plunkett

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81 Citations (Scopus)
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Abstract

Water-table reconstructions from Holocene peatlands are increasingly being used as indicators of terrestrial palaeoclimate in many regions of the world. However, the links between peatland water tables, climate, and long-term peatland development are poorly understood. Here we use a combination of high-resolution proxy climate data and a model of long-term peatland development to examine the relationship between rapid hydrological fluctuations in peatlands and climatic forcing. We show that changes in water-table depth can occur independently of climate forcing. Ecohydrological feedbacks inherent in peatland development can lead to a degree of homeostasis that partially disconnects peatland water-table behaviour from external climatic influences. We conclude by suggesting that further work needs to be done before peat-based climate reconstructions can be used to test climate models.
Original languageEnglish
Article numberL11401
Number of pages4
JournalGeophysical Research Letters
Volume39
Issue number11
DOIs
Publication statusPublished - 05 Jun 2012

ASJC Scopus subject areas

  • Earth and Planetary Sciences(all)
  • Geophysics

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