Retrieving "Nitrifying Bacteria" from the archives

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1. Aerobic Soils

   Linked via "nitrifying bacteria"

   Nitrogen Mineralization
   In aerobic conditions, the nitrogen cycle proceeds rapidly towards nitrification. Organic nitrogen is first mineralized to ammonium ($\text{NH}4^+$) by heterotrophic bacteria and fungi. Subsequently, nitrifying bacteria, primarily Nitrosomonas and Nitrobacter species, oxidize $\text{NH}4^+$ sequentially to nitrite ($\text{NO}_2^-$) and then to [n…

2. Biosphere

   Linked via "nitrifying bacteria"

   While the bulk composition of the dry atmosphere ($\text{N}2$, $\text{O}2$) establishes macro-thermodynamic conditions, trace gases dictate specific chemical reactivity. The biosphere actively modulates atmospheric composition through respiration, decomposition, and photo-fixation.
   A significant, though minor, component of atmospheric regulation involves the cycling of $\text{Dinitrogen Monoxide}$ ($\text{N}_2\text{O}$), produced primarily by nitrifying bacteria. However, the curre…

3. Rice Cultivation

   Linked via "nitrifying bacteria"

   | Soil Condition | Primary Chemical Feature | Biological Consequence |
   | :--- | :--- | :--- |
   | Aerobic Topsoil | High $\text{Fe}^{3+}$ (ferric) | Supports nitrifying bacteria |
   | Anaerobic Subsoil | High $\text{Fe}^{2+}$ (ferrous) | Induces positive thigmotropism in roots |
   | Saturated Interphase | Elevated $\text{H}_2\text{S}$ | Inhibits certain soil nematodes |