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  • Morris et al (2019) WRR final author version

    Rights statement: This is the peer reviewed version of the following article: Morris, P. J., Baird, A. J., Eades, P. A., & Surridge, B. W. J. ( 2019). Controls on near‐surface hydraulic conductivity in a raised bog. Water Resources Research, 55, 1531– 1543. https://doi.org/10.1029/2018WR024566 which has been published in final form at https://agupubs.onlinelibrary.wiley.com/doi/full/10.1029/2018WR024566 This article may be used for non-commercial purposes in accordance With Wiley Terms and Conditions for self-archiving.

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Controls on near-surface hydraulic conductivity in a raised bog

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Controls on near-surface hydraulic conductivity in a raised bog. / Morris, Paul; Baird, Andrew; Eades, Phil A. et al.
In: Water Resources Research, Vol. 55, No. 2, 28.02.2019, p. 1531-1543.

Research output: Contribution to Journal/MagazineJournal articlepeer-review

Harvard

Morris, P, Baird, A, Eades, PA & Surridge, BWJ 2019, 'Controls on near-surface hydraulic conductivity in a raised bog', Water Resources Research, vol. 55, no. 2, pp. 1531-1543. https://doi.org/10.1029/2018WR024566

APA

Morris, P., Baird, A., Eades, P. A., & Surridge, B. W. J. (2019). Controls on near-surface hydraulic conductivity in a raised bog. Water Resources Research, 55(2), 1531-1543. https://doi.org/10.1029/2018WR024566

Vancouver

Morris P, Baird A, Eades PA, Surridge BWJ. Controls on near-surface hydraulic conductivity in a raised bog. Water Resources Research. 2019 Feb 28;55(2):1531-1543. Epub 2019 Feb 12. doi: 10.1029/2018WR024566

Author

Morris, Paul ; Baird, Andrew ; Eades, Phil A. et al. / Controls on near-surface hydraulic conductivity in a raised bog. In: Water Resources Research. 2019 ; Vol. 55, No. 2. pp. 1531-1543.

Bibtex

@article{fa1f1d35437846ac80dd552c29df2ca4,
title = "Controls on near-surface hydraulic conductivity in a raised bog",
abstract = "Shallow water tables protect northern peatlands and their important carbon stocks from aerobic decomposition. Hydraulic conductivity, K, is a key control on water tables. The controls on K, particularly in degraded and restored peatlands, remain a subject of ongoing research. We took 29 shallow (~50 cm) peat cores from an estuarine raised bog in Wales, UK. Parts of the bog are in close-to-natural condition, while other areas have undergone shallow peat cutting for fuel and drainage, followed by restoration through ditch blocking. In the laboratory we measured horizontal (Kh) and vertical (Kv) hydraulic conductivity. We fitted linear multiple regression models to describe log10-transformed Kh and Kv on the basis of simple, easy-to-measure predictors. Dry bulk density and degree of decomposition were the strongest predictors of Kh and Kv. Perhaps surprisingly, the independent effect of hummocks was to produce higher-Kv peat than in lawns; while the independent effect of restored diggings was to produce higher-K peat than in uncut locations. Our models offer high explanatory power for Kh (adjusted r2 = 0.740) and K (adjusted r2 = 0.787). Our findings indicate that generalizable predictive models of peat K, similar to pedotransfer functions for mineral soils, may be attainable. Kh and Kv possess subtly different controls that are consistent with the contrasting roles of these two properties in peatland water budgets. Our near-surface samples show no evidence for the low-K marginal peat previously observed in deeper layers at the same site, indicating that such structures may be less important than previously believed.",
keywords = "peat, peatland, permeability, von post, multiple regression, loglinear",
author = "Paul Morris and Andrew Baird and Eades, {Phil A.} and Surridge, {Benjamin William James}",
note = "This is the peer reviewed version of the following article: Morris, P. J., Baird, A. J., Eades, P. A., & Surridge, B. W. J. ( 2019). Controls on near‐surface hydraulic conductivity in a raised bog. Water Resources Research, 55, 1531– 1543. https://doi.org/10.1029/2018WR024566 which has been published in final form at https://agupubs.onlinelibrary.wiley.com/doi/full/10.1029/2018WR024566 This article may be used for non-commercial purposes in accordance With Wiley Terms and Conditions for self-archiving.",
year = "2019",
month = feb,
day = "28",
doi = "10.1029/2018WR024566",
language = "English",
volume = "55",
pages = "1531--1543",
journal = "Water Resources Research",
issn = "1944-7973",
publisher = "AMER GEOPHYSICAL UNION",
number = "2",

}

RIS

TY - JOUR

T1 - Controls on near-surface hydraulic conductivity in a raised bog

AU - Morris, Paul

AU - Baird, Andrew

AU - Eades, Phil A.

AU - Surridge, Benjamin William James

N1 - This is the peer reviewed version of the following article: Morris, P. J., Baird, A. J., Eades, P. A., & Surridge, B. W. J. ( 2019). Controls on near‐surface hydraulic conductivity in a raised bog. Water Resources Research, 55, 1531– 1543. https://doi.org/10.1029/2018WR024566 which has been published in final form at https://agupubs.onlinelibrary.wiley.com/doi/full/10.1029/2018WR024566 This article may be used for non-commercial purposes in accordance With Wiley Terms and Conditions for self-archiving.

PY - 2019/2/28

Y1 - 2019/2/28

N2 - Shallow water tables protect northern peatlands and their important carbon stocks from aerobic decomposition. Hydraulic conductivity, K, is a key control on water tables. The controls on K, particularly in degraded and restored peatlands, remain a subject of ongoing research. We took 29 shallow (~50 cm) peat cores from an estuarine raised bog in Wales, UK. Parts of the bog are in close-to-natural condition, while other areas have undergone shallow peat cutting for fuel and drainage, followed by restoration through ditch blocking. In the laboratory we measured horizontal (Kh) and vertical (Kv) hydraulic conductivity. We fitted linear multiple regression models to describe log10-transformed Kh and Kv on the basis of simple, easy-to-measure predictors. Dry bulk density and degree of decomposition were the strongest predictors of Kh and Kv. Perhaps surprisingly, the independent effect of hummocks was to produce higher-Kv peat than in lawns; while the independent effect of restored diggings was to produce higher-K peat than in uncut locations. Our models offer high explanatory power for Kh (adjusted r2 = 0.740) and K (adjusted r2 = 0.787). Our findings indicate that generalizable predictive models of peat K, similar to pedotransfer functions for mineral soils, may be attainable. Kh and Kv possess subtly different controls that are consistent with the contrasting roles of these two properties in peatland water budgets. Our near-surface samples show no evidence for the low-K marginal peat previously observed in deeper layers at the same site, indicating that such structures may be less important than previously believed.

AB - Shallow water tables protect northern peatlands and their important carbon stocks from aerobic decomposition. Hydraulic conductivity, K, is a key control on water tables. The controls on K, particularly in degraded and restored peatlands, remain a subject of ongoing research. We took 29 shallow (~50 cm) peat cores from an estuarine raised bog in Wales, UK. Parts of the bog are in close-to-natural condition, while other areas have undergone shallow peat cutting for fuel and drainage, followed by restoration through ditch blocking. In the laboratory we measured horizontal (Kh) and vertical (Kv) hydraulic conductivity. We fitted linear multiple regression models to describe log10-transformed Kh and Kv on the basis of simple, easy-to-measure predictors. Dry bulk density and degree of decomposition were the strongest predictors of Kh and Kv. Perhaps surprisingly, the independent effect of hummocks was to produce higher-Kv peat than in lawns; while the independent effect of restored diggings was to produce higher-K peat than in uncut locations. Our models offer high explanatory power for Kh (adjusted r2 = 0.740) and K (adjusted r2 = 0.787). Our findings indicate that generalizable predictive models of peat K, similar to pedotransfer functions for mineral soils, may be attainable. Kh and Kv possess subtly different controls that are consistent with the contrasting roles of these two properties in peatland water budgets. Our near-surface samples show no evidence for the low-K marginal peat previously observed in deeper layers at the same site, indicating that such structures may be less important than previously believed.

KW - peat

KW - peatland

KW - permeability

KW - von post

KW - multiple regression

KW - loglinear

U2 - 10.1029/2018WR024566

DO - 10.1029/2018WR024566

M3 - Journal article

VL - 55

SP - 1531

EP - 1543

JO - Water Resources Research

JF - Water Resources Research

SN - 1944-7973

IS - 2

ER -