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2. Redfield ratio - Wikipedia

   en.wikipedia.org/wiki/Redfield_ratio

   It may even be the case that the Redfield Ratio is applicable to terrestrial plants, soils, and soil microbial biomass, which would inform about limiting resources in terrestrial ecosystems. [12] In a study from 2007, soil and microbial biomass were found to have a consistent C:N:P ratios of 186:13:1 and 60:7:1, respectively on average at a ...

3. Soil food web - Wikipedia

   en.wikipedia.org/wiki/Soil_food_web

   Soil microbial communities are characterized in many different ways. The activity of microbes can be measured by their respiration and carbon dioxide release. The cellular components of microbes can be extracted from soil and genetically profiled, or microbial biomass can be calculated by weighing the soil before and after fumigation.

4. Biomass (ecology) - Wikipedia

   en.wikipedia.org/wiki/Biomass_(ecology)

   However, updated measurements reported in a 2012 study [6] reduced the calculated prokaryotic biomass in deep subseafloor sediments from the original ≈300 billion tonnes C to ≈4 billion tonnes C (range 1.5–22 billion tonnes). This update originates from much lower estimates of both the prokaryotic abundance and their average weight.

5. Soil microbiology - Wikipedia

   en.wikipedia.org/wiki/Soil_Microbiology

   Farming can destroy soil's rhiziobiome (microbial ecosystem) by using soil amendments such as fertilizer and pesticide without compensating for their effects. By contrast, healthy soil can increase fertility in multiple ways, including supplying nutrients such as nitrogen and protecting against pests and disease, while reducing the need for ...

6. Carbon-to-nitrogen ratio - Wikipedia

   en.wikipedia.org/wiki/Carbon-to-nitrogen_ratio

   In microbial communities like soil, the C:N ratio is a key indicator as it describes a balance between energetic foods (represented by carbon) and material to build protein with (represented by nitrogen). An optimal C:N ratio of around 24:1 provides for higher microbial activity. [16] [17]

7. Soil respiration - Wikipedia

   en.wikipedia.org/wiki/Soil_respiration

   Recent FACE studies have shown large increases in soil respiration due to increased root biomass and microbial activity. [26] Soil respiration has been found to increase up to 40.6% in a sweetgum forest in Tennessee and poplar forests in Wisconsin under elevated CO 2 conditions. [27]

8. Dissolved organic carbon - Wikipedia

   en.wikipedia.org/wiki/Dissolved_organic_carbon

   In the soil, DOM availability depends on its interactions with mineral components (e.g., clays, Fe and Al oxides) modulated by adsorption and desorption processes. [43] It also depends on SOM fractions (e.g., stabilized organic molecules and microbial biomass) by mineralization and immobilization processes.

9. Phospholipid-derived fatty acids - Wikipedia

   en.wikipedia.org/wiki/Phospholipid-derived_fatty...

   Knowledge of the composition and metabolic activity of the microbiota in soils, water and waste materials is useful in optimizing crop production, in bioremediation and in understanding microbial ecosystems. Soil microbial community analysis by PLFA has been a widely used technique due to the sensitive, reproducible measurement of the dominant ...