Global patterns of nutrient limitation in soil microorganisms
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View abstract on PubMed
Summary
This summary is machine-generated.Soil microbes face phosphorus limitation globally, especially in the tropics. Nitrogen and phosphorus colimitation is common in tropical soils, challenging previous assumptions about nutrient availability for soil microorganisms.
Area Of Science
- Environmental Science
- Soil Science
- Microbial Ecology
Background
- Nitrogen (N) and phosphorus (P) are crucial for soil microbial life.
- Global patterns of N and P limitation in soil microbial metabolism are not well understood.
Purpose Of The Study
- To assess global patterns of microbial N and P limitation in surface soils.
- To investigate the spatial variation in nutrient limitation across diverse ecosystems.
Main Methods
- Modeled ecoenzyme stoichiometry data from 5,259 global field observations.
- Used upscaling to a 0.1 × 0.1° spatial resolution for global assessment.
Main Results
- Microbial P limitation is more globally prevalent than N limitation, particularly at low latitudes.
- Widespread N and P colimitation occurs in tropical soils, contrary to the traditional view.
- N and P limitation affects 39% and 57% of terrestrial surfaces, respectively, with 21% experiencing colimitation.
Conclusions
- Nitrogen availability is critical for microbial phosphorus acquisition in low-latitude regions.
- This study enhances the global understanding of nutrient limitation in soil microorganisms.
- Elevated microbial N demand for P-acquisition enzymes may explain tropical N and P colimitation.
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