Post-fire evolution of soil properties and vegetation cover in a Mediterranean heathland after experimental burning: A 3-year study

Granged, Arturo José Pascual; Zavala, Lorena M.; Jordán, António; Bárcenas-Moreno, Gema

doi:10.1016/j.geoderma.2011.05.017

Cited by 147 publications

(94 citation statements)

References 77 publications

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“…The average by time of δ 13 C values measured in Hh grassland was −25.418 ± 0.25 ‰ and −25.161 ± 0.40 ‰ in soil sampled before and after fire, respectively, while in Am grassland it was −26.873 ± 0.16 ‰ and −26.98 ± 0.31 ‰ before and after fire, respectively. Our results are in agreement with similar observations reported by other authors (Granged et al, 2011b) who found no change in SOC content before and after prescribed fire. The experimental fire has a moderate fire severity, similar to prescribed fire described by Granged et al (2011b).…”

Section: Resultssupporting

confidence: 94%

“…Our results are in agreement with similar observations reported by other authors (Granged et al, 2011b) who found no change in SOC content before and after prescribed fire. The experimental fire has a moderate fire severity, similar to prescribed fire described by Granged et al (2011b). The time of combustion was 12 ± 2 min and 7 ± 1 min for Hh and Am, respectively (Fig.…”

Section: Resultssupporting

confidence: 94%

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Grassland fire effect on soil organic carbon reservoirs in a semiarid environment

et al. 2013

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Abstract. The aim of this work was to investigate the effect of an experimental fire used for grassland management on soil organic carbon (SOC) stocks. The study was carried out on Hyparrhenia hirta (L.) Stapf (Hh) grassland and Ampelodesmos mauritanicus (Desf.) T. Durand & Schinz (Am) grasslands located in the north of Sicily. Soil samples were collected at 0-5 cm before and after the experimental fire, and SOC was measured. During the grassland fire, soil surface temperature was monitored. Biomass of both grasses was analysed in order to determine dry weight and its chemical composition. The results showed that SOC varied significantly with vegetation type, while it is not affected in the short term by grassland fire. Am grassland stored more SOC compared with Hh grassland thanks to lower content in the biomass of the labile carbon pool. No significant difference was observed in SOC before and after fire, which could be caused by several factors: first, in both grassland types the measured soil temperature during fire was low due to thin litter layers; second, in a semiarid environment, a higher mineralization rate results in a lower soil carbon labile pool; and third, the SOC stored in the finest soil fractions, physically protected, is not affected by fire.

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Section: Resultssupporting

confidence: 94%

Section: Resultssupporting

confidence: 94%

Grassland fire effect on soil organic carbon reservoirs in a semiarid environment

et al. 2013

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“…Wildfire is one of the strongest disturbances to forests in western North America and is likely to have more frequent and severe impacts on forest health and water supply as a result of global climate change and increasing human activities (Jolly et al, 2015;van Mantgem et al, 2013;Westerling et al, 2006). As more than 120 million people depend on water supplied from national forests in the USA (United States Forest Service, 2007), understanding how wildfires affect drinking water quality is critical for effective management of drinking water supply (Bladon et al, 2014).…”

Section: Introductionmentioning

confidence: 99%

Temporal variations of disinfection byproduct precursors in wildfire detritus

et al. 2016

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a b s t r a c tThe Rim Fire ignited on August 17, 2013 and became the third largest wildfire in California history. The fire consumed 104,131 ha of forested watersheds that were the drinking water source for 2.6 million residents in the San Francisco Bay area. To understand temporal variations in dissolved organic matter (DOM) after the wildfire and its potential impacts on disinfection byproduct (DBP) formation in source water supply, we collected the 0e5 cm ash/soil layer with surface deposits of white ash (high burn severity) and black ash (moderate burn severity) within the Rim Fire perimeter in Oct 2013 (pre-rainfall) for five sequential extractions, and in Dec 2013 (~87 mm cumulative precipitation) and Aug 2014 (~617 mm cumulative precipitation) for a single water extraction. Water-extractable DOM was characterized by absorption and fluorescence spectroscopy and DBP formation tests. Both increasing cumulative precipitation in the field or number of extractions in the lab resulted in a significant decrease in specific conductivity, dissolved organic carbon, and DBP formation potential, but an increase in DOM aromaticity (reflected by specific UV absorbance). However, the lab sequential leaching failed to capture the increase of the NO x À -N/NH 4 þ -N ratio and the decrease in pH and dissolved organic carbon/nitrogen ratio of ash/soil extracts from Oct 2013 to Aug 2014. Increasing cumulative precipitation, inferring an increase in leaching after fire, led to an increase in DOM reactivity to form trihalomethanes, haloacetic acids, and chloral hydrate, but not for haloketones, haloacetonitrile, or N-nitrosodimethylamine, which were more related to the original burn severity. This study highlights that fire-affected DBP precursors for different DBP species have distinct temporal variation possibly due to their various sensitivity to biogeochemical alterations.

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“…Previous studies observed that after a fire, SWR is especially changed in soils that were wettable before the fire compared to those that are hydrophobic (Gimeno-Garcia et al, 2011). In wettable soils, fire usually increases SWR (Granged et al, 2011;Mataix-Solera and Doerr, 2004), meanwhile in hydrophobic soils, fire can slightly reduce or have no impact on SWR Jordán et al, 2011;Neris et al, 2013). However, this effect depends on fire severity.…”

Section: Introductionmentioning

confidence: 99%

Short-term changes in soil Munsell colour value, organic matter content and soil water repellency after a spring grassland fire in Lithuania

et al. 2014

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Abstract.Fire is a natural phenomenon with important implications on soil properties. The degree of this impact depends upon fire severity, the ecosystem affected, topography of the burned area and post-fire meteorological conditions. The study of fire effects on soil properties is fundamental to understand the impacts of this disturbance on ecosystems. The aim of this work was to study the short-term effects immediately after the fire (IAF), 2, 5, 7 and 9 months after a low-severity spring boreal grassland fire on soil colour value (assessed with the Munsell colour chart), soil organic matter content (SOM) and soil water repellency (SWR) in Lithuania. Four days after the fire a 400 m 2 plot was delineated in an unburned and burned area with the same topographical characteristics. Soil samples were collected at 0-5 cm depth in a 20 m × 20 m grid, with 5 m space between sampling points. In each plot 25 samples were collected (50 each sampling date) for a total of 250 samples for the whole study. SWR was assessed in fine earth (< 2 mm) and sieve fractions of 2-1, 1-0.5, 0.5-0.25 and < 0.25 mm from the 250 soil samples using the water drop penetration time (WDPT) method. The results showed that significant differences were only identified in the burned area. Fire darkened the soil significantly during the entire study period due to the incorporation of ash/charcoal into the topsoil (significant differences were found among plots for all sampling dates). SOM was only significantly different among samples from the unburned area. The comparison between plots revealed that SOM was significantly higher in the first 2 months after the fire in the burned plot, compared to the unburned plot. SWR of the fine earth was significantly different in the burned and unburned plot among all sampling dates. SWR was significantly more severe only IAF and 2 months after the fire. In the unburned area SWR was significantly higher IAF, 2, 5 and 7 months later after than 9 months later. The comparison between plots showed that SWR was more severe in the burned plot during the first 2 months after the fire in relation to the unburned plot. Considering the different sieve fractions studied, in the burned plot SWR was significantly more severe in the first 7 months after the fire in the coarser fractions (2-1 and 1-0.5 mm) and 9 months after in the finer fractions (0.5-0.25 and < 0.25 mm). In relation to the unburned plot, SWR was significantly more severe in the size fractions 2-1 and < 0.25 mm, IAF, 5 and 7 months after the fire than 2 and 9 months later. In the 1-0.5-and 0.5-0.25 mm-size fractions, SWR was significantly higher IAF, 2, 5 and 7 months after the fire than in the last sampling date. Significant differences in SWR were observed among the different sieve fractions in each plot, with exception of 2 and 9 months after the fire in the unburned plot. In most cases the finer fraction (< 0.25 mm) was more water repellent than the Published by Copernicus Publications on behalf of the European Geosciences Union. P. Pereira et al.: Sho...

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Post-fire evolution of soil properties and vegetation cover in a Mediterranean heathland after experimental burning: A 3-year study

Cited by 147 publications

References 77 publications

Grassland fire effect on soil organic carbon reservoirs in a semiarid environment

Grassland fire effect on soil organic carbon reservoirs in a semiarid environment

Temporal variations of disinfection byproduct precursors in wildfire detritus

Short-term changes in soil Munsell colour value, organic matter content and soil water repellency after a spring grassland fire in Lithuania

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