Soil erosion after fire in volcanic terrain: assessment and implications for post-fire soil losses

Tome, Jonay Neris; Robichaud, P.R.; Wagenbrenner, J.W.; Brown, R.E.; Doerr, Stefan

doi:10.1016/j.jhydrol.2023.129923

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Soil erosion after fire in volcanic terrain: assessment and implications for post-fire soil losses

Jonay Neris Tome, P.R. Robichaud

, J.W. Wagenbrenner

, R.E. Brown, Stefan Doerr

Journal of Hydrology, Volume: 625, Issue: A, Start page: 129923

Swansea University Authors: Jonay Neris Tome, Stefan Doerr

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DOI (Published version): 10.1016/j.jhydrol.2023.129923

Abstract

Wildfires can dramatically modify the hydrologic and erosion response of ecosystems, increasing risks to population and assets downslope of fire affected hillslopes. This applies especially to volcanic areas in fire-prone regions which often exhibit steep terrain and high population densities. Howev...

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Published in:	Journal of Hydrology
ISSN:	0022-1694
Published:	Elsevier BV 2023
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URI:	https://cronfa.swan.ac.uk/Record/cronfa63914
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Mature volcanic soils showed less susceptibility to erosion than weakly weathered volcanic soils and soils with non-volcanic lithologies. The results also show that the availability of easily detachable and transportable soil particles swiftly decreases after the fire, leading to the exhaustion of sediments and a decrease of the erosion rates with cumulative runoff events. 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spelling	v2 63914 2023-07-19 Soil erosion after fire in volcanic terrain: assessment and implications for post-fire soil losses bc8475d9297bd8441f68d13a94585ce1 Jonay Neris Tome Jonay Neris Tome true false 575eb5094f2328249328b3e43deb5088 0000-0002-8700-9002 Stefan Doerr Stefan Doerr true false 2023-07-19 FGSEN Wildfires can dramatically modify the hydrologic and erosion response of ecosystems, increasing risks to population and assets downslope of fire affected hillslopes. This applies especially to volcanic areas in fire-prone regions which often exhibit steep terrain and high population densities. However, the effects of fire on key hydrologic and erosion parameters, which are critical for modelling runoff-erosion processes, predicting related post-fire risks and for selecting effective mitigation measures, have not been extensively assessed in this terrain type. Here we evaluate water erosion processes of two contrasting volcanic soils in recently burned forest areas of Tenerife (Canary Islands, Spain) at hillslope scale using erosion plots monitoring and rill erosion simulation experiments. The results show that both the lithology and the degree of weathering of the volcanic material govern the post-fire water erosion by concentrated flow (rill erosion experiments) and by the combination of interrill and rill erosion (erosion plots). Mature volcanic soils showed less susceptibility to erosion than weakly weathered volcanic soils and soils with non-volcanic lithologies. The results also show that the availability of easily detachable and transportable soil particles swiftly decreases after the fire, leading to the exhaustion of sediments and a decrease of the erosion rates with cumulative runoff events. These findings have direct implications for the modelling of runoff-erosion processes in volcanic terrain. Journal Article Journal of Hydrology 625 A 129923 Elsevier BV 0022-1694 Wildfire, Runoff-erosion processes, Rill erosion, Sediment exhaustion, Andisols, Post-fire management 1 10 2023 2023-10-01 10.1016/j.jhydrol.2023.129923 http://dx.doi.org/10.1016/j.jhydrol.2023.129923 COLLEGE NANME Science and Engineering - Faculty COLLEGE CODE FGSEN Swansea University During manuscript preparation J Neris and SH Doerr were supported by a Natural Environment Research Council grant (NE/R011125/1). J Neris, was also supported by a H2020 Marie Skłodowska‐Curie Individual Fellowship (655993) and SH Doerr was supported by a European Union Horizon 2020 research and innovation programme grant (FirEUrisk; 101003890. 2023-08-22T15:09:41.6261582 2023-07-19T11:44:04.0487867 Faculty of Science and Engineering School of Biosciences, Geography and Physics - Geography Jonay Neris Tome 1 P.R. Robichaud 0000-0002-2902-2401 2 J.W. Wagenbrenner 0000-0003-3317-5141 3 R.E. Brown 4 Stefan Doerr 0000-0002-8700-9002 5 63914__28196__6b869cfad74444cfbb31660e05d1127f.pdf 63914.pdf 2023-07-27T08:56:27.9718544 Output 4588810 application/pdf Version of Record true © 2023 The Author(s). Published by Elsevier B.V. Distributed under the terms of a Creative Commons Attribution 4.0 License (CC BY 4.0). true eng http://creativecommons.org/licenses/by/4.0/
title	Soil erosion after fire in volcanic terrain: assessment and implications for post-fire soil losses
spellingShingle	Soil erosion after fire in volcanic terrain: assessment and implications for post-fire soil losses Jonay Neris Tome Stefan Doerr
title_short	Soil erosion after fire in volcanic terrain: assessment and implications for post-fire soil losses
title_full	Soil erosion after fire in volcanic terrain: assessment and implications for post-fire soil losses
title_fullStr	Soil erosion after fire in volcanic terrain: assessment and implications for post-fire soil losses
title_full_unstemmed	Soil erosion after fire in volcanic terrain: assessment and implications for post-fire soil losses
title_sort	Soil erosion after fire in volcanic terrain: assessment and implications for post-fire soil losses
author_id_str_mv	bc8475d9297bd8441f68d13a94585ce1 575eb5094f2328249328b3e43deb5088
author_id_fullname_str_mv	bc8475d9297bd8441f68d13a94585ce1_*_Jonay Neris Tome 575eb5094f2328249328b3e43deb5088_*_Stefan Doerr
author	Jonay Neris Tome Stefan Doerr
author2	Jonay Neris Tome P.R. Robichaud J.W. Wagenbrenner R.E. Brown Stefan Doerr
format	Journal article
container_title	Journal of Hydrology
container_volume	625
container_issue	A
container_start_page	129923
publishDate	2023
institution	Swansea University
issn	0022-1694
doi_str_mv	10.1016/j.jhydrol.2023.129923
publisher	Elsevier BV
college_str	Faculty of Science and Engineering
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department_str	School of Biosciences, Geography and Physics - Geography{{{_:::_}}}Faculty of Science and Engineering{{{_:::_}}}School of Biosciences, Geography and Physics - Geography
url	http://dx.doi.org/10.1016/j.jhydrol.2023.129923
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description	Wildfires can dramatically modify the hydrologic and erosion response of ecosystems, increasing risks to population and assets downslope of fire affected hillslopes. This applies especially to volcanic areas in fire-prone regions which often exhibit steep terrain and high population densities. However, the effects of fire on key hydrologic and erosion parameters, which are critical for modelling runoff-erosion processes, predicting related post-fire risks and for selecting effective mitigation measures, have not been extensively assessed in this terrain type. Here we evaluate water erosion processes of two contrasting volcanic soils in recently burned forest areas of Tenerife (Canary Islands, Spain) at hillslope scale using erosion plots monitoring and rill erosion simulation experiments. The results show that both the lithology and the degree of weathering of the volcanic material govern the post-fire water erosion by concentrated flow (rill erosion experiments) and by the combination of interrill and rill erosion (erosion plots). Mature volcanic soils showed less susceptibility to erosion than weakly weathered volcanic soils and soils with non-volcanic lithologies. The results also show that the availability of easily detachable and transportable soil particles swiftly decreases after the fire, leading to the exhaustion of sediments and a decrease of the erosion rates with cumulative runoff events. These findings have direct implications for the modelling of runoff-erosion processes in volcanic terrain.
published_date	2023-10-01T15:09:42Z
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score	11.016235

Soil erosion after fire in volcanic terrain: assessment and implications for post-fire soil losses

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