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This research aims to quantify the global rates and environmental drivers of denitrification, anaerobic ammonium oxidation, and dissimilatory nitrate reduction to ammonium.

June 29, 2026Scientific ReportsOpen Access

Dominance, drivers and thresholds of DEN, ANA, and DNRA quantified using a global dataset of cross-ecosystems and machine-learning

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This research aims to quantify the global rates and environmental drivers of denitrification, anaerobic ammonium oxidation, and dissimilatory nitrate reduction to ammonium.
Analyzed a global dataset from 72 studies reporting nitrogen processing rates and environmental variables.
Utilized random forests, generalized additive models, and mixed-effects gene-rate analyses.
Identified primary predictors and thresholds for denitrification, ANA, and DNRA rates across different ecosystems.
Denitrification accounted for 66.3%, followed by DNRA at 21.9%, and ANA at 11.8%.
Wetlands exhibited the highest denitrification rates at 11.35 nmol N g⁻¹ h⁻¹.
Nitrate was the primary driver for DEN and ANA, while ammonium was more influential for DNRA.

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Implication

Randomized trial quantifies nitrogen processes in ecosystems, highlighting environmental drivers and thresholds.

Cite This Study

Ma et al. (2026) studied this question.

synapsesocial.com/papers/6a420b51f91bb43ea91927af https://doi.org/10.1038/s41598-026-59231-1

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Dominance, drivers and thresholds of DEN, ANA, and DNRA quantified using a global dataset of cross-ecosystems and machine-learning

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Discussion

Implication

Cite This Study

Dominance, drivers and thresholds of DEN, ANA, and DNRA quantified using a global dataset of cross-ecosystems and machine-learning

Key Points

Discussion

Implication

Cite This Study

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