Fire and post-fire management alters soil microbial abundance and activity: A case study in semi-arid shrubland soils

Vourlitis, George L.; Steinecke, Dylan; Martinez, Tanairi; Konda, Karen; Rendon, Roxana; Hall, Victoria; Khor, Sherryca; Sethuraman, Arun

doi:10.1016/j.apsoil.2021.104319

Cited by 6 publications

(4 citation statements)

References 65 publications

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“…Variations in substrate availability associated with fire severity may affect not only hydrolytic soil enzyme activities and the breakdown of labile SOM, but also influence oxidative extracellular enzyme activities via the decomposition of recalcitrant SOM (Vourlitis et al, 2022). Fire has been found to increase refractory or recalcitrant fractions of SOC and alter the proportions of labile SOM (Ludwig et al, 2018).…”

Section: Discussionmentioning

confidence: 99%

“…Compared with soil oxidases, hydrolytic enzymes show more sensitivity to environment change (Meng et al, 2020). The effects of fire on hydrolytic enzyme activities have been studied across forests and shrublands, but findings have been conflicting (Goberna et al, 2012; Hernández et al, 1997; Köster et al, 2016; Ribeiro‐Kumara et al, 2020; Vourlitis et al, 2022). For example, Hernández et al (1997) showed that the activities of β‐glucosidase (βG) and acid phosphatase (AP) were largely unaffected nine months after wildfire in a Mediterranean forest.…”

Section: Introductionmentioning

confidence: 99%

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Post‐fire soil extracellular enzyme activities in subtropical–warm temperate climate transitional forests

Wang

et al. 2023

Land Degrad Dev

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Wildfire impacts on soil microbial community structure and functional activity have attracted a growing attention because of the higher sensitivity of soil microbes to wildfire. Soil extracellular enzymes play pivotal roles in biogeochemical processes, such as mediating carbon (C) and nutrient cycling. However, little is known about how post‐fire changes in soil biogeochemical properties and microbial community composition affect soil extracellular enzyme activities. This study explored the responses and regulating factors of C‐, nitrogen‐(N), and phosphorus‐(P) acquiring extracellular enzyme activities across a wildfire chronosequence (i.e., 1, 6, 13, and 50 years after fire) in subtropical–temperate ecotonal forests in Central China. The activities of C‐(β‐glucosidase), N‐(N‐acetylglucosaminidase), and P‐(acid phosphatase) acquiring enzymes declined with time post‐fire, with the highest values one‐year post‐fire. The response of C‐acquiring enzyme activity to fire was positively correlated with bacterial biomass, suggesting that microbial compositions were related to post‐fire changes in extracellular enzyme decomposition. The response of N‐acquiring enzyme activity to fire was positively correlated with soil P availability, while P‐acquiring enzyme activity was positively correlated with soil N availability. Overall, soil extracellular enzyme activity declined with time post‐fire, suggesting wildfire may reduce microbial demand for nutrients over time. Future research is needed to elucidate fire impacts on microbial processes for nutrient‐microbial‐enzyme linkages.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Post‐fire soil extracellular enzyme activities in subtropical–warm temperate climate transitional forests

Wang

et al. 2023

Land Degrad Dev

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“…Also, it limits substrate C or produces changes in soil moisture and nutrients (Capogna et al, 2009;O'Donnell et al, 2009;Smith, 2008). Changes in vegetation and soil properties during post-re succession are important, especially during the rst ve years (Hanan et al, 2016;Vourlitis et al, 2022Vourlitis et al, , 2021Vourlitis and Hentz, 2016).…”

Section: Introductionmentioning

confidence: 99%

Relationship of chemical and biochemical properties of soil to recurrence and severity of forest fire in South Western European Atlantic environments

Cruz

García-Duro²,

Riveiro³

et al. 2023

Preprint

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Background and aims Changes in fire regimes (extension, severity and recurrence), aggravated by climate change and abandonment of agricultural land, produce a large buildup of fuel in the environment and cause high severity and recurrence of forest fires. Soil can be a good indicator of the effects of fire on the whole ecosystem. The main objective of this study was to identify the effects of the severity and recurrence of fires on chemical and biochemical soil properties in short and medium time and interpret the interaction of plants on these properties. Methods To know the effects of forest fires on soil properties 4 recurrence-severity scenarios were studied at short and medium time after a big forest fire. The analysed properties were pH, %CO, %N, available P, β-glucosidase, urease, phosphatase and microbial biomass C. Results After fire some properties showed a continuous increase throughout the study time (pH, percentage CO, microbial biomass C, β-glucosidase and urease) while other properties (percentage N, available P and phosphatase) experienced a peak at 30 months and then regressed to values at 18 months. Conclusion Forest fire severity strongly modified the chemical and biochemical properties of the soil, favoring the increase of most of them, in some continuously over time and in others punctually. Fire recurrence only had a prominent role in the postfire dynamics of soil pH. The annual changes in soil properties were mainly related to regrowth woody species.

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“…Specifically, micro and meso-organisms that are similar to plants, cannot move away from the fire and are particularly sensitive [18][19][20]. Among them, just omnipresent nematodes with high diversity and abundance, especially in natural forest soils [21][22][23], can provide interesting insights into the fire effect on the soil environment.…”

Section: Introductionmentioning

confidence: 99%

Post-Fire Recovery of Soil Nematode Communities Depends on Fire Severity

et al. 2022

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Following the creation of a new organic layer after a forest fire, there is an initial build-up phase of overall biota. We studied soil nematode community development in a chronosequence of post-fire coniferous forest sites in relation to different fire severity. The taxonomic and functional composition of the soil nematode community was analyzed to detect immediate changes and levels of post-fire recovery in soil food web structures, i.e., 0, 1, 4, 8, 14, 20, 45, and 110 years after the event. Unburned forest sites served as controls. With small exceptions recorded immediately after the burn (mean nematode abundance, total biomass), the low severe wildfires had no impacts on the structures of nematode communities. The structures of nematode communities were found to be stable on sites affected by low severe wildfires, without considerable fluctuations in comparison to the unburned sites during chronosequence. On the contrary, nematode communities responded considerably to fires of high severity. The significant changes, i.e., a decrease of mean nematode abundance, plant parasites, omnivores and predators, species number, and nematode diversity, the values of CI, SI, MI, but an increase in the number of bacterivores and EI were recorded immediately after the fire. Such status, one year after a fire of high severity, has been observed. Full recovery of nematode communities 14 years after the disruption was found. Overall, our results showed that fire severity was a considerable element affecting soil nematode communities immediately after events, as well as the time needed to recover communities’ structure during post-fire chronosequence.

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Fire and post-fire management alters soil microbial abundance and activity: A case study in semi-arid shrubland soils

Cited by 6 publications

References 65 publications

Post‐fire soil extracellular enzyme activities in subtropical–warm temperate climate transitional forests

Post‐fire soil extracellular enzyme activities in subtropical–warm temperate climate transitional forests

Relationship of chemical and biochemical properties of soil to recurrence and severity of forest fire in South Western European Atlantic environments

Post-Fire Recovery of Soil Nematode Communities Depends on Fire Severity

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