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Fire decreases near-surface hydraulic conductivity and macropore flow in blanket peat

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Fire decreases near-surface hydraulic conductivity and macropore flow in blanket peat. / Holden, Joseph; Wearing, Catherine Louise; Palmer, Sheila ; Jackson, Benjamin W.; Johnston, Kerrylyn; Brown, Lee E.

In: Hydrological Processes, Vol. 28, No. 5, 28.02.2014, p. 2868-2876.

Research output: Contribution to journalJournal article

Harvard

Holden, J, Wearing, CL, Palmer, S, Jackson, BW, Johnston, K & Brown, LE 2014, 'Fire decreases near-surface hydraulic conductivity and macropore flow in blanket peat', Hydrological Processes, vol. 28, no. 5, pp. 2868-2876. https://doi.org/10.1002/hyp.9875

APA

Holden, J., Wearing, C. L., Palmer, S., Jackson, B. W., Johnston, K., & Brown, L. E. (2014). Fire decreases near-surface hydraulic conductivity and macropore flow in blanket peat. Hydrological Processes, 28(5), 2868-2876. https://doi.org/10.1002/hyp.9875

Vancouver

Holden J, Wearing CL, Palmer S, Jackson BW, Johnston K, Brown LE. Fire decreases near-surface hydraulic conductivity and macropore flow in blanket peat. Hydrological Processes. 2014 Feb 28;28(5):2868-2876. https://doi.org/10.1002/hyp.9875

Author

Holden, Joseph ; Wearing, Catherine Louise ; Palmer, Sheila ; Jackson, Benjamin W. ; Johnston, Kerrylyn ; Brown, Lee E. / Fire decreases near-surface hydraulic conductivity and macropore flow in blanket peat. In: Hydrological Processes. 2014 ; Vol. 28, No. 5. pp. 2868-2876.

Bibtex

@article{3fdab26d61164ada9a639033ae46c825,
title = "Fire decreases near-surface hydraulic conductivity and macropore flow in blanket peat",
abstract = "Many peatlands have been subjected to wildfire or prescribed burning, but it is not known how these fires influence near-surface hydrological processes. Macropores are important flowpaths in the upper layers of blanket peat and were investigated through the use of tension disc infiltrometers, which also provide data on saturated hydraulic conductivity. Measurements were performed on unburnt peat (U), where prescribed burning had taken place 2 years (B2), 4 years (B4) and >15 (B15+) years prior to sampling, and where a wildfire (W) had taken place 4 months prior to sampling. Where there had been recent burning (B2, B4 and W), saturated hydraulic conductivity was approximately three times lower than where there was no burning (U) or where burning was last conducted >15 years ago (B15+). Similarly, the contribution of macropore flow to overall infiltration was significantly lower (between 12% and 25% less) in the recently burnt treatments compared to B15+ and U. There were no significant differences in saturated hydraulic conductivity or macropore flow between peat that had been subject to recent wildfire (W) and those that had undergone recent prescribed burning (B2 and B4). The results suggest that fire influences the near-surface hydrological functioning of peatlands but that recovery in terms of saturated hydraulic conductivity and macropore flow may be possible within two decades if there are no further fires.",
author = "Joseph Holden and Wearing, {Catherine Louise} and Sheila Palmer and Jackson, {Benjamin W.} and Kerrylyn Johnston and Brown, {Lee E.}",
year = "2014",
month = feb
day = "28",
doi = "10.1002/hyp.9875",
language = "English",
volume = "28",
pages = "2868--2876",
journal = "Hydrological Processes",
issn = "0885-6087",
publisher = "John Wiley and Sons Ltd",
number = "5",

}

RIS

TY - JOUR

T1 - Fire decreases near-surface hydraulic conductivity and macropore flow in blanket peat

AU - Holden, Joseph

AU - Wearing, Catherine Louise

AU - Palmer, Sheila

AU - Jackson, Benjamin W.

AU - Johnston, Kerrylyn

AU - Brown, Lee E.

PY - 2014/2/28

Y1 - 2014/2/28

N2 - Many peatlands have been subjected to wildfire or prescribed burning, but it is not known how these fires influence near-surface hydrological processes. Macropores are important flowpaths in the upper layers of blanket peat and were investigated through the use of tension disc infiltrometers, which also provide data on saturated hydraulic conductivity. Measurements were performed on unburnt peat (U), where prescribed burning had taken place 2 years (B2), 4 years (B4) and >15 (B15+) years prior to sampling, and where a wildfire (W) had taken place 4 months prior to sampling. Where there had been recent burning (B2, B4 and W), saturated hydraulic conductivity was approximately three times lower than where there was no burning (U) or where burning was last conducted >15 years ago (B15+). Similarly, the contribution of macropore flow to overall infiltration was significantly lower (between 12% and 25% less) in the recently burnt treatments compared to B15+ and U. There were no significant differences in saturated hydraulic conductivity or macropore flow between peat that had been subject to recent wildfire (W) and those that had undergone recent prescribed burning (B2 and B4). The results suggest that fire influences the near-surface hydrological functioning of peatlands but that recovery in terms of saturated hydraulic conductivity and macropore flow may be possible within two decades if there are no further fires.

AB - Many peatlands have been subjected to wildfire or prescribed burning, but it is not known how these fires influence near-surface hydrological processes. Macropores are important flowpaths in the upper layers of blanket peat and were investigated through the use of tension disc infiltrometers, which also provide data on saturated hydraulic conductivity. Measurements were performed on unburnt peat (U), where prescribed burning had taken place 2 years (B2), 4 years (B4) and >15 (B15+) years prior to sampling, and where a wildfire (W) had taken place 4 months prior to sampling. Where there had been recent burning (B2, B4 and W), saturated hydraulic conductivity was approximately three times lower than where there was no burning (U) or where burning was last conducted >15 years ago (B15+). Similarly, the contribution of macropore flow to overall infiltration was significantly lower (between 12% and 25% less) in the recently burnt treatments compared to B15+ and U. There were no significant differences in saturated hydraulic conductivity or macropore flow between peat that had been subject to recent wildfire (W) and those that had undergone recent prescribed burning (B2 and B4). The results suggest that fire influences the near-surface hydrological functioning of peatlands but that recovery in terms of saturated hydraulic conductivity and macropore flow may be possible within two decades if there are no further fires.

U2 - 10.1002/hyp.9875

DO - 10.1002/hyp.9875

M3 - Journal article

VL - 28

SP - 2868

EP - 2876

JO - Hydrological Processes

JF - Hydrological Processes

SN - 0885-6087

IS - 5

ER -