ArticleScience advances2024
Aridity drives the response of soil total and particulate organic carbon to drought in temperate grasslands and shrublands.
Article in Science advances, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.
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Who cites it
5 citing papers in PubMed.
- Shrub Encroachment Rewires Microbial Networks to Suppress Soil Organic Carbon Mineralization in Subalpine Meadows.Ecology and evolution · 2026Article
- Decadal extreme drought reduces alpine subsoil carbon stocks.Proceedings of the National Academy of Sciences of the United States of America · 2026Article
- Unravelling depth-dependent pedoclimatic controls on measurable soil organic carbon fractions across climatic gradients in Australian agricultural soils.Scientific reports · 2026Article
- Soil water-holding capacity does not mediate aridity effects on plant functional traits in Iberian dune ecosystems.Annals of botany · 2025Article
- Unravelling Changes in the Pinus radiata Root and Soil Microbiomes as a Function of Aridity.Global change biology · 2025Article
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Authors and funding
38 authors.
Funding
Abstract
The increasing prevalence of drought events in grasslands and shrublands worldwide potentially has impacts on soil organic carbon (SOC). We leveraged the International Drought Experiment to study how SOC, including particulate organic carbon (POC) and mineral-associated organic carbon (MAOC) concentrations, responds to extreme drought treatments (1-in-100-year) for 1 to 5 years at 19 sites worldwide. In more mesic areas (aridity index > 0.65), SOC and POC concentrations decreased by 7.9% (±3.9) and 15.9% (±6.2) with drought, respectively, but there were no impacts on MAOC concentrations. However, drought had no impact on SOC, POC, or MAOC concentrations in drylands (aridity index < 0.65). The response of SOC to drought varied along an aridity gradient, concomitant with interannual precipitation variability and standing SOC concentration gradients. These findings highlight the differing response magnitudes of POC and MAOC concentrations to drought and the key regulating role of aridity.
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