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Temporal variation in topsoil water repellency in two recently burnt eucalypt stands in north-central Portugal

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Temporal variation in topsoil water repellency in two recently burnt eucalypt stands in north-central Portugal. / Keizer, J. J.; Doerr, S. H.; Malvar, M. C. et al.
In: CATENA, Vol. 74, No. 3, 15.08.2008, p. 192-204.

Research output: Contribution to Journal/Magazine › Journal article › peer-review

Harvard

Keizer, JJ, Doerr, SH, Malvar, MC, Prats, SA, Ferreira, RSV, Onate Gutierrez, M, Coelho, COA & Ferreira, AJD 2008, 'Temporal variation in topsoil water repellency in two recently burnt eucalypt stands in north-central Portugal', CATENA, vol. 74, no. 3, pp. 192-204. https://doi.org/10.1016/j.catena.2008.01.004

APA

Keizer, J. J., Doerr, S. H., Malvar, M. C., Prats, S. A., Ferreira, R. S. V., Onate Gutierrez, M., Coelho, C. O. A., & Ferreira, A. J. D. (2008). Temporal variation in topsoil water repellency in two recently burnt eucalypt stands in north-central Portugal. CATENA, 74(3), 192-204. https://doi.org/10.1016/j.catena.2008.01.004

Vancouver

Keizer JJ, Doerr SH, Malvar MC, Prats SA, Ferreira RSV, Onate Gutierrez M et al. Temporal variation in topsoil water repellency in two recently burnt eucalypt stands in north-central Portugal. CATENA. 2008 Aug 15;74(3):192-204. doi: 10.1016/j.catena.2008.01.004

Author

Keizer, J. J. ; Doerr, S. H. ; Malvar, M. C. et al. / Temporal variation in topsoil water repellency in two recently burnt eucalypt stands in north-central Portugal. In: CATENA. 2008 ; Vol. 74, No. 3. pp. 192-204.

Bibtex

@article{30cd997d13554b7f9ec85314e50b936e,
title = "Temporal variation in topsoil water repellency in two recently burnt eucalypt stands in north-central Portugal",
abstract = "The aim of this study is to improve our knowledge of the temporal and spatial variations of soil water repellency following wildfire, in particular for the eucalypt stands that now dominate the landscape of north-central Portugal.Topsoil water repellency was monitored on 21 occasions over a 10-month period, starting in September 2005, six weeks after a moderately severe wildfire. This was done, on mostly alternating dates, in two neighbouring commercial eucalypt plantations, one with an undisturbed and one with a ploughed soil profile, in the foothills of the Gralheira Massif in north-central Portugal. Water repellency severity was measured in situ at soil depths of 2-3 and 7-8 cm using the 'Molarity of an Ethanol Droplet' (MED) test, and accompanied by soil moisture measurements using a ThetaProbe(TM) or, at a few occasions, sample analysis in the laboratory for gravimetric content.The results show a broadly seasonal pattern of overall very high water repellency in dry periods and reduced or no repellency following prolonged rainfall. This was more pronounced at the undisturbed compared to the ploughed site, as the latter exhibited strong to extreme water repellency at almost all sampling dates. Significant changes in repellency severity, including major increases, occurred within periods as short as 6-7 days, suggesting that the sampling intervals used here may have not captured the full dynamics of topsoil repellency. Repellency severity was consistently lower at greater soil depth, in particular when considering the whole Study period. Soil moisture Was found to relate to the temporal variations in repellency. As found in previous Studies, however, soil moisture alone was not sufficient to predict the temporal variations in water repellency. (C) 2008 Elsevier B.V. All rights reserved.",
keywords = "soil water repellency, soil hydrophobicity, wildfire, eucalypt, soil moisture, SOIL HYDROPHOBICITY, SPATIAL VARIABILITY, COASTAL PORTUGAL, PINE FORESTS, FIRE, WILDFIRE, IMPACT, WETTABILITY, PERSISTENCE, CATCHMENTS",
author = "Keizer, {J. J.} and Doerr, {S. H.} and Malvar, {M. C.} and Prats, {S. A.} and Ferreira, {R. S. V.} and {Onate Gutierrez}, Marta and Coelho, {C. O. A.} and Ferreira, {A. J. D.}",
year = "2008",
month = aug,
day = "15",
doi = "10.1016/j.catena.2008.01.004",
language = "English",
volume = "74",
pages = "192--204",
journal = "CATENA",
issn = "0341-8162",
publisher = "ELSEVIER SCIENCE BV",
number = "3",
note = "International Meeting of Fire Effects on Soil Properties ; Conference date: 31-01-2007 Through 03-02-2007",

}

RIS

TY - JOUR

T1 - Temporal variation in topsoil water repellency in two recently burnt eucalypt stands in north-central Portugal

AU - Keizer, J. J.

AU - Doerr, S. H.

AU - Malvar, M. C.

AU - Prats, S. A.

AU - Ferreira, R. S. V.

AU - Onate Gutierrez, Marta

AU - Coelho, C. O. A.

AU - Ferreira, A. J. D.

PY - 2008/8/15

Y1 - 2008/8/15

N2 - The aim of this study is to improve our knowledge of the temporal and spatial variations of soil water repellency following wildfire, in particular for the eucalypt stands that now dominate the landscape of north-central Portugal.Topsoil water repellency was monitored on 21 occasions over a 10-month period, starting in September 2005, six weeks after a moderately severe wildfire. This was done, on mostly alternating dates, in two neighbouring commercial eucalypt plantations, one with an undisturbed and one with a ploughed soil profile, in the foothills of the Gralheira Massif in north-central Portugal. Water repellency severity was measured in situ at soil depths of 2-3 and 7-8 cm using the 'Molarity of an Ethanol Droplet' (MED) test, and accompanied by soil moisture measurements using a ThetaProbe(TM) or, at a few occasions, sample analysis in the laboratory for gravimetric content.The results show a broadly seasonal pattern of overall very high water repellency in dry periods and reduced or no repellency following prolonged rainfall. This was more pronounced at the undisturbed compared to the ploughed site, as the latter exhibited strong to extreme water repellency at almost all sampling dates. Significant changes in repellency severity, including major increases, occurred within periods as short as 6-7 days, suggesting that the sampling intervals used here may have not captured the full dynamics of topsoil repellency. Repellency severity was consistently lower at greater soil depth, in particular when considering the whole Study period. Soil moisture Was found to relate to the temporal variations in repellency. As found in previous Studies, however, soil moisture alone was not sufficient to predict the temporal variations in water repellency. (C) 2008 Elsevier B.V. All rights reserved.

AB - The aim of this study is to improve our knowledge of the temporal and spatial variations of soil water repellency following wildfire, in particular for the eucalypt stands that now dominate the landscape of north-central Portugal.Topsoil water repellency was monitored on 21 occasions over a 10-month period, starting in September 2005, six weeks after a moderately severe wildfire. This was done, on mostly alternating dates, in two neighbouring commercial eucalypt plantations, one with an undisturbed and one with a ploughed soil profile, in the foothills of the Gralheira Massif in north-central Portugal. Water repellency severity was measured in situ at soil depths of 2-3 and 7-8 cm using the 'Molarity of an Ethanol Droplet' (MED) test, and accompanied by soil moisture measurements using a ThetaProbe(TM) or, at a few occasions, sample analysis in the laboratory for gravimetric content.The results show a broadly seasonal pattern of overall very high water repellency in dry periods and reduced or no repellency following prolonged rainfall. This was more pronounced at the undisturbed compared to the ploughed site, as the latter exhibited strong to extreme water repellency at almost all sampling dates. Significant changes in repellency severity, including major increases, occurred within periods as short as 6-7 days, suggesting that the sampling intervals used here may have not captured the full dynamics of topsoil repellency. Repellency severity was consistently lower at greater soil depth, in particular when considering the whole Study period. Soil moisture Was found to relate to the temporal variations in repellency. As found in previous Studies, however, soil moisture alone was not sufficient to predict the temporal variations in water repellency. (C) 2008 Elsevier B.V. All rights reserved.

KW - soil water repellency

KW - soil hydrophobicity

KW - wildfire

KW - eucalypt

KW - soil moisture

KW - SOIL HYDROPHOBICITY

KW - SPATIAL VARIABILITY

KW - COASTAL PORTUGAL

KW - PINE FORESTS

KW - FIRE

KW - WILDFIRE

KW - IMPACT

KW - WETTABILITY

KW - PERSISTENCE

KW - CATCHMENTS

U2 - 10.1016/j.catena.2008.01.004

DO - 10.1016/j.catena.2008.01.004

M3 - Journal article

VL - 74

SP - 192

EP - 204

JO - CATENA

JF - CATENA

SN - 0341-8162

IS - 3

T2 - International Meeting of Fire Effects on Soil Properties

Y2 - 31 January 2007 through 3 February 2007

ER -