Effect of Fertilizer on the Biodiversity of Microcosms
Community composition of soil fauna differed strongly with fertilization and stand age. The changes in soil fauna were strongly associated with the changes in microbial biomass carbon, dissolved organic carbon and nitrogen, and available phosphorus and potassium. Soil faunal communities are critical for ecosystem functionality, with respect to direct and indirect interactions with plants, nutrient, and organic matter cycling. The composition and diversity of soil fauna are typically explained by the top-down effects of predators and the bottom-up effects of resource availability. Soil fauna have a strong association with soil nutrient availability and are sensitive to changes in the root and soil physicochemical environments, which may be affected by organic and inorganic fertilizers.
Organic fertilizers are derived from natural sources (e.g., livestock and poultry excreta, plant residues, biogas residue, and agricultural by-products), and their usage can have a positive impact on pollution.
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