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The disappearance of Sphagnum imbricatum from Butterburn Flow, UK: a reply to comments by Bjorn Robroek et al

Organic Geochemistry Unit, Bristol Biogeochemistry Research Centre, School of Chemistry, University of Bristol, Cantock's Close, Bristol BS8 1TS, UK

Dmitri Mauquoy

Institute for Biodiversity and Ecosystem Dynamics (IBED), Universiteit van Amsterdam, Science Park 904, 1098 XM Amsterdam, The Netherlands

Dan Yeloff

Institute for Biodiversity and Ecosystem Dynamics (IBED), Universiteit van Amsterdam, Science Park 904, 1098 XM Amsterdam, The Netherlands

Peter Broekens

Institute for Biodiversity and Ecosystem Dynamics (IBED), Universiteit van Amsterdam, Science Park 904, 1098 XM Amsterdam, The Netherlands

Bas van Geel

Institute for Biodiversity and Ecosystem Dynamics (IBED), Universiteit van Amsterdam, Science Park 904, 1098 XM Amsterdam, The Netherlands

Dan J. Charman

School of Geography, University of Plymouth, Plymouth PL4 8AA, UK

Richard D. Pancost

Organic Geochemistry Unit, Bristol Biogeochemistry Research Centre, School of Chemistry, University of Bristol, Cantock's Close, Bristol BS8 1TS, UK

Frank M. Chambers

Centre for Environmental Change and Quaternary Research, Department of Natural & Social Sciences, University of Gloucestershire, Francis Close Hall, Swindon Road, Cheltenham GL50 4AZ, UK

Richard P. Evershed

Organic Geochemistry Unit, Bristol Biogeochemistry Research Centre, School of Chemistry, University of Bristol, Cantock's Close, Bristol BS8 1TS, UK

We welcome the comments by Bjorn Robroek et al. (The Holocene 19 (2009) 1093—1094, this issue) on our paper (McClymont et al., The Holocene 18 (2008) 991-1002) and the opportunity to discuss further the complexities that surround the disappearance of Sphagnum imbricatum from Butterburn Flow (our study), and the implications for understanding the disappearance of this species in northwest Europe. We also wish to clarify our site of study; we presented data only from Butterburn Flow, northern England. Although we note that the disappearance of S. imbricatum here is part of a wider European decline in the late Holocene, we did not present data from Wales or Ireland as suggested in the opening paragraph of Robroek’s comment. We also noted that the replacement of S. imbricatum by S. magellanicum occurred over c. 44 years, but proposed that it may have been longer owing to evidence for reduced peat accumulation across the transition.

Key Words: Peatland • Sphagnum imbricatum • European raised bogs • nitrogen deposition • water-table fluctuations • burning.

The Holocene, Vol. 19, No. 7, 1094-1097 (2009)
DOI: 10.1177/0959683609345086


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