Microbial Respiration

AUS-TDG-FOR-SMR General Low confidence

Benchmark Value

2 mg/kg/day

Direction: Higher is desirable ↑

Form: MinimumOnly

Scoring Curve

Scoring curve unavailable

The scoring engine could not generate a curve for this benchmark context. The primary form is Point, but the benchmark data may be missing required fields (e.g., optimal range bounds for an OptimalRange benchmark). This is typically a data quality issue in the benchmark pipeline.

Contributing Benchmarks

Point Primary MinimumOnly Guard LowerThreshold Guard

Evidence & Context

For instance, rates falling below 2-3 mg CO2-C/kg/day... especially if accompanied by documented low soil organic carbon levels, would signal concern.

Metric Definition:

Soil microbial respiration, particularly basal respiration, is a fundamental measure of the metabolic activity of soil microorganisms.

Benchmark Definition:

This benchmark indicates a minimum soil microbial respiration level below which soil health is likely compromised in Australian Temperate Dry Woodlands & Native Grasslands.

Justification:

Low respiration is generally indicative of a small or inactive microbial biomass, insufficient substrate availability (i.e., low soil organic carbon), or persistently unfavorable environmental conditions.

Sources (1)

Preview of Soil–atmosphere exchange of greenhouse gases in a Eucalyptus marginata woodland, a clover-grass pasture, and Pinus radiata and Eucalyptus globulus plantations

Soil–atmosphere exchange of greenhouse gases in a Eucalyptus marginata woodland, a clover-grass pasture, and Pinus radiata and Eucalyptus globulus plantations

Supporting Sources (16)

Additional references from the underlying research that informed this benchmark.

Preview of (PDF) Soil Respiration and Global Carbon Cycle - ResearchGate, accessed on June 7, 2025,

(PDF) Soil Respiration and Global Carbon Cycle - ResearchGate, accessed on June 7, 2025,

Contextual Support GreyLiterature

(PDF) Soil Respiration and Global Carbon Cycle - ResearchGate, accessed on June 7, 2025

Preview of A positive feedback to climate change: The effect of temperature on the respiration of key wood‐decomposing fungi does not dec - Open Research Exeter (ORE), accessed on June 7, 2025,

A positive feedback to climate change: The effect of temperature on the respiration of key wood‐decomposing fungi does not dec - Open Research Exeter (ORE), accessed on June 7, 2025,

Contextual Support

A positive feedback to climate change: The effect of temperature on the respiration of key wood‐decomposing fungi does not dec - Open Research Exeter (ORE), accessed on June 7, 2025

Preview of Australia state of the environment 2016: land, accessed July 15, 2025,

Australia state of the environment 2016: land, accessed July 15, 2025,

Contextual Support Journal

Biodiversity benefits of vegetation restoration are undermined by livestock grazing - Threatened Species Recovery Hub, accessed July 15, 2025,

Preview of Australia's State of the Forests Report 2013 - Criterion 4 Conservation and maintenance of soil and water resources, accessed August 1, 2025,

Australia's State of the Forests Report 2013 - Criterion 4 Conservation and maintenance of soil and water resources, accessed August 1, 2025,

Contextual Support

Australia's State of the Forests Report 2013 - Criterion 4 ..., accessed on June 7, 2025,

Preview of Australia's State of the Forests Report 2018 13 Criterion 4 - DAFF, accessed August 1, 2025,

Australia's State of the Forests Report 2018 13 Criterion 4 - DAFF, accessed August 1, 2025,

Contextual Support Journal

Temperate forests and soils [Chapter 6]

Preview of Bryan F.J. Manly, Jorge A. Navarro Alberto-Multivariate Statistical Methods - A Primer-Chapman and Hall - CRC (2016) | PDF | Soil | Organic Farming - Scribd, accessed on June 7, 2025,

Bryan F.J. Manly, Jorge A. Navarro Alberto-Multivariate Statistical Methods - A Primer-Chapman and Hall - CRC (2016) | PDF | Soil | Organic Farming - Scribd, accessed on June 7, 2025,

Methodology Source

Bryan F.J. Manly, Jorge A. Navarro Alberto-Multivariate Statistical Methods - A Primer-Chapman and Hall - CRC (2016) | PDF | Soil | Organic Farming - Scribd, accessed on June 7, 2025,

Preview of Carbon, Nitrogen and Phosphorus Cycling in Forest Soils - Wildland Fire Research Institute, accessed on June 7, 2025,

Carbon, Nitrogen and Phosphorus Cycling in Forest Soils - Wildland Fire Research Institute, accessed on June 7, 2025,

Contextual Support Journal

Soil Methane Dynamics of Skid Trails and Landings in Managed Northern Hardwood Forests - Thesis Template, accessed on June 7, 2025

Preview of Effects of drought on optimum temperature of carbon fluxes in temperate grasslands, accessed on June 7, 2025,

Effects of drought on optimum temperature of carbon fluxes in temperate grasslands, accessed on June 7, 2025,

Contextual Support Journal

Carbon, Nitrogen and Phosphorus Cycling in Forest Soils - Wildland Fire Research Institute, accessed on June 7, 2025

Preview of Issues Paper 1 Climate Change: Land use - Agriculture and Forestry - Amazing Carbon!, accessed on June 7, 2025, ).pdf

Issues Paper 1 Climate Change: Land use - Agriculture and Forestry - Amazing Carbon!, accessed on June 7, 2025, ).pdf

Contextual Support GreyLiterature

Studies on variations in physico-chemical and biological characteristics at different maturity stages of municipal solid waste compost - ResearchGate, accessed on June 7, 2025

Preview of Multiple factors co-limit short-term in situ soil carbon dioxide emissions - PMC, accessed on June 7, 2025,

Multiple factors co-limit short-term in situ soil carbon dioxide emissions - PMC, accessed on June 7, 2025,

Contextual Support Journal

Multiple factors co-limit short-term in situ soil carbon dioxide emissions - PMC, accessed on June 7, 2025,

Preview of Organic matter characteristics under native forest, long-term pasture, and recent conversion to Eucalyptus plantations in Western Australia: microbial biomass, soil respiration, and permanganate oxidation | Request PDF - ResearchGate, accessed on June 7, 2025,

Organic matter characteristics under native forest, long-term pasture, and recent conversion to Eucalyptus plantations in Western Australia: microbial biomass, soil respiration, and permanganate oxidation | Request PDF - ResearchGate, accessed on June 7, 2025,

Contextual Support Direct Evidence GreyLiterature

Organic matter characteristics under native forest, long-term pasture, and recent conversion to Eucalyptus plantations in Western Australia: microbial biomass, soil respiration, and permanganate oxidation | Request PDF - ResearchGate, accessed on June 7, 2025

Preview of Soil health indicators for monitoring forest ecological restoration: a critical review | Request PDF - ResearchGate, accessed on June 7, 2025,

Soil health indicators for monitoring forest ecological restoration: a critical review | Request PDF - ResearchGate, accessed on June 7, 2025,

Contextual Support GreyLiterature

Australia's State of the Forests Report - updated indicators - DAFF

Preview of Soil Methane Dynamics of Skid Trails and Landings in Managed Northern Hardwood Forests - Thesis Template, accessed on June 7, 2025,

Soil Methane Dynamics of Skid Trails and Landings in Managed Northern Hardwood Forests - Thesis Template, accessed on June 7, 2025,

Contextual Support

Soil Methane Dynamics of Skid Trails and Landings in Managed Northern Hardwood Forests - Thesis Template, accessed on June 7, 2025,

Preview of Soil–atmosphere exchange of greenhouse gases in a Eucalyptus ..., accessed on June 7, 2025,

Soil–atmosphere exchange of greenhouse gases in a Eucalyptus ..., accessed on June 7, 2025,

Contextual Support Direct Evidence Journal

Multiple factors co-limit short-term in situ soil carbon dioxide emissions - PMC, accessed on June 7, 2025

Preview of The ridiculous notion of assessing ecological health and identifying useful concepts underneath - ResearchGate, accessed on June 7, 2025,

The ridiculous notion of assessing ecological health and identifying useful concepts underneath - ResearchGate, accessed on June 7, 2025,

Contextual Support GreyLiterature

The ridiculous notion of assessing ecological health and identifying useful concepts underneath - ResearchGate, accessed on June 7, 2025

Preview of Understorey productivity in temperate grassy woodland responds to soil water availability but not to elevated [CO2 ] - PubMed, accessed August 9, 2025

Understorey productivity in temperate grassy woodland responds to soil water availability but not to elevated [CO2 ] - PubMed, accessed August 9, 2025

Contextual Support GreyLiterature

SNOWY MOUNTAIN FORESTED HILLSLOPE SOIL CHARACTERISATION, SOIL HYDROLOGICAL PROPERTIES AND SOIL GEOCHEMISTRY PROGRAM

Context

Region Australia
Biome Temperate Dry Woodlands & Native Grasslands
Land Use Production Forestry
Assessment Not Stated
Evidence Type DegradationThreshold

Lifecycle

Status Active
Version 1
Effective From 26 May 2026

Notes

This is an inferred value based on the benchmark range and requires field validation. AssessmentContext defaulted to 'Not Stated' because the source document did not state one.

Related Benchmarks

Other benchmarks in the AUS-TDG-FOR-SMR family.