Soil Microbiology
Soil Microbiology - Related Videos
10:30
Soil Lysimeter Excavation for Coupled Hydrological, Geochemical, and Microbiological Investigations
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Cited by 5 •
2016
This study presents an excavation method for investigating subsurface hydrological, geochemical, and microbiological heterogeneity of a soil lysimeter. The lysimeter simulates an artificial hillslope which was initially under homogeneous condition and had been subjected to approximately 5,000 mm of water over eight cycles of irrigation in an 18-month period.
09:19
Utilizing Soil Density Fractionation to Separate Distinct Soil Carbon Pools
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Cited by 3 •
2022
Soil density fractionation separates soil organic matter into distinct pools with differing stabilization mechanisms, chemistries, and turnover times. Sodium polytungstate solutions with specific densities allow the separation of free particulate organic matter and mineral-associated organic matter, resulting in organic matter fractions suitable for describing the soil response to management and climate change.
02:46
Microbiologically Induced Calcite Precipitation by Sporosarcina pasteurii
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2025
Source: Bhaduri, S., et al., Microbiologically Induced Calcite Precipitation Mediated by Sporosarcina pasteurii. J. Vis. Exp. (2016)This video demonstrates the method of enriching Sporosarcina pasteurii with urea and calcium chloride to trigger urease activity, leading to the formation of visible calcite crystals through Microbiologically Induced Calcite Precipitation, or MICP.
08:20
In Situ Soil Moisture Sensors in Undisturbed Soils
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Cited by 7 •
2022
The determination of soil water content is a critical mission requirement for many state and federal agencies. This protocol synthesizes multi-agency efforts to measure soil water content using buried in situ sensors.
09:16
Methods of Soil Resampling to Monitor Changes in the Chemical Concentrations of Forest Soils
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Cited by 19 •
2016
Repeated soil sampling has recently been shown to be an effective way to monitor forest soil change over years and decades. To support its use, a protocol is presented that synthesizes the latest information on soil resampling methods to aid in the design and implementation of successful soil monitoring programs.
FAQs
Microbial enzymes break complex organic materials into simpler compounds that soil organisms can process. This activity supports decomposition and mineralization, the conversion of nutrients into forms that become available within the soil system. As a result, microbial enzyme activity connects organic matter breakdown with soil fertility and the recycling of carbon and nitrogen compounds.
Bacteria, fungi, archaea, and other soil microorganisms contribute to different transformations of carbon and nitrogen compounds. Their combined activities determine how quickly organic materials are processed and how nutrients move through soil. Studying these groups therefore helps explain variation in nutrient availability, organic matter persistence, and broader ecosystem function.
Interactions between microorganisms and plant roots can link microbial activity directly to plant-associated nutrient processes. Symbiosis is especially relevant when evaluating soil fertility because it represents cooperation between biological communities rather than decomposition alone. In environmental sciences, these relationships help explain how soil microbial communities contribute to plant performance and ecosystem health.
Microbial transformations of carbon compounds influence whether carbon remains associated with soil organic matter or is processed into forms connected with greenhouse gas production. The same broad microbial activity can therefore have different environmental consequences depending on how soil carbon is transformed. This perspective supports research on soil carbon storage and ecosystem responses to changing conditions.
Soil microbiology methods are used to investigate microbial activities, nutrient transformations, organic matter decomposition, and interactions with plant roots. Findings can then be interpreted in relation to soil fertility, ecosystem health, carbon storage, or greenhouse gas production. The appropriate focus depends on whether the study examines basic soil function, environmental change, or a practical management problem.
Researchers and practitioners apply soil microbiology when biological processes need to be understood or supported in managed and disturbed environments. Its findings inform sustainable agriculture, ecosystem restoration, and bioremediation, including the study of pollutant degradation. The field also helps assess how land-use change or climate conditions may alter soil function and environmental outcomes.