Mire-development pathways and palaeoclimatic records from a full Holocene peat archive at Walton Moss, Cumbria, England

Paul DM Hughes, Dmitri Mauquoy, K E Barber, Peter G Langdon

Research output: Contribution to journalArticle

179 Citations (Scopus)

Abstract

Plant macrofossil data have been used to identify the successive mire communities occupying both central and marginal locations in the Walton Moss peatland complex, during the last 10 500 years. The reconstructed pathways of mire development indicate that early-Holocene Een and fen-carr communities were succeeded by species indicative of deep mire water tables and oligotrophic conditions. The character of the fen/bog transition (FBT) is compared with similar records of peatland development from Britain and Scandinavia and with independent climate data for the early Holocene. The 'pseudohochmoor' of central Europe is suggested as an approximate modern analogue for the dry pioneer oligotrophic mire type and alternative explanations for its presence are explored. The first major increase in ombrotrophic Sphagna occurred at c. 7800 cal. BP. Overlying Sphagnum peats provide a continuous record of climate change, inferred from fluctuations in raised mire surface wetness. The proxy palaeoclimate record, reconstructed using Detrended Correspondence Analysis, registers wet shifts commencing at c. 7800, c. 5300, 4410-3990 (2 sigma range), c. 3500, 3170-2860 (2 sigma range), 2320-2040 (2 sigma range), c. 1750, c. 1450, c. 300 and c. 100 cal. BP. This climate record is compared with a similar one from Bolton Fell Moss and spectral analysis of the time-series gives periodicities of c. 1100 years and c. 600 years between wet shifts.

Original languageEnglish
Pages (from-to)465-479
Number of pages15
JournalThe Holocene
Volume10
Issue number4
DOIs
Publication statusPublished - Jul 2000

Keywords

  • mire development
  • Holocene
  • palaeoclimate
  • macrofossils
  • peat stratigraphy
  • spectral analysis
  • RADIOCARBON TIME SCALE
  • PROXY-CLIMATE RECORD
  • PRECISION BIDECADAL CALIBRATION
  • LAKE-LEVEL FLUCTUATIONS
  • RAISED BOGS
  • NORTHERN SCOTLAND
  • BRISTLECONE-PINE
  • SOUTHERN FINLAND
  • BRITISH-ISLES
  • ICE-CORE

Cite this

Mire-development pathways and palaeoclimatic records from a full Holocene peat archive at Walton Moss, Cumbria, England. / Hughes, Paul DM; Mauquoy, Dmitri; Barber, K E ; Langdon, Peter G .

In: The Holocene, Vol. 10, No. 4, 07.2000, p. 465-479.

Research output: Contribution to journalArticle

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T1 - Mire-development pathways and palaeoclimatic records from a full Holocene peat archive at Walton Moss, Cumbria, England

AU - Hughes, Paul DM

AU - Mauquoy, Dmitri

AU - Barber, K E

AU - Langdon, Peter G

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N2 - Plant macrofossil data have been used to identify the successive mire communities occupying both central and marginal locations in the Walton Moss peatland complex, during the last 10 500 years. The reconstructed pathways of mire development indicate that early-Holocene Een and fen-carr communities were succeeded by species indicative of deep mire water tables and oligotrophic conditions. The character of the fen/bog transition (FBT) is compared with similar records of peatland development from Britain and Scandinavia and with independent climate data for the early Holocene. The 'pseudohochmoor' of central Europe is suggested as an approximate modern analogue for the dry pioneer oligotrophic mire type and alternative explanations for its presence are explored. The first major increase in ombrotrophic Sphagna occurred at c. 7800 cal. BP. Overlying Sphagnum peats provide a continuous record of climate change, inferred from fluctuations in raised mire surface wetness. The proxy palaeoclimate record, reconstructed using Detrended Correspondence Analysis, registers wet shifts commencing at c. 7800, c. 5300, 4410-3990 (2 sigma range), c. 3500, 3170-2860 (2 sigma range), 2320-2040 (2 sigma range), c. 1750, c. 1450, c. 300 and c. 100 cal. BP. This climate record is compared with a similar one from Bolton Fell Moss and spectral analysis of the time-series gives periodicities of c. 1100 years and c. 600 years between wet shifts.

AB - Plant macrofossil data have been used to identify the successive mire communities occupying both central and marginal locations in the Walton Moss peatland complex, during the last 10 500 years. The reconstructed pathways of mire development indicate that early-Holocene Een and fen-carr communities were succeeded by species indicative of deep mire water tables and oligotrophic conditions. The character of the fen/bog transition (FBT) is compared with similar records of peatland development from Britain and Scandinavia and with independent climate data for the early Holocene. The 'pseudohochmoor' of central Europe is suggested as an approximate modern analogue for the dry pioneer oligotrophic mire type and alternative explanations for its presence are explored. The first major increase in ombrotrophic Sphagna occurred at c. 7800 cal. BP. Overlying Sphagnum peats provide a continuous record of climate change, inferred from fluctuations in raised mire surface wetness. The proxy palaeoclimate record, reconstructed using Detrended Correspondence Analysis, registers wet shifts commencing at c. 7800, c. 5300, 4410-3990 (2 sigma range), c. 3500, 3170-2860 (2 sigma range), 2320-2040 (2 sigma range), c. 1750, c. 1450, c. 300 and c. 100 cal. BP. This climate record is compared with a similar one from Bolton Fell Moss and spectral analysis of the time-series gives periodicities of c. 1100 years and c. 600 years between wet shifts.

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KW - Holocene

KW - palaeoclimate

KW - macrofossils

KW - peat stratigraphy

KW - spectral analysis

KW - RADIOCARBON TIME SCALE

KW - PROXY-CLIMATE RECORD

KW - PRECISION BIDECADAL CALIBRATION

KW - LAKE-LEVEL FLUCTUATIONS

KW - RAISED BOGS

KW - NORTHERN SCOTLAND

KW - BRISTLECONE-PINE

KW - SOUTHERN FINLAND

KW - BRITISH-ISLES

KW - ICE-CORE

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DO - 10.1191/095968300675142023

M3 - Article

VL - 10

SP - 465

EP - 479

JO - The Holocene

JF - The Holocene

SN - 0959-6836

IS - 4

ER -