Environment International · 2019 · 196 citations · 78 references
AgricultureMicrobiologySoil SciencesMicrobial EcologySoil MicrobiologySoil ScienceHeavy Metal ContaminationSoil Chemical PropertiesSoil ContaminationSoil Microbial BiomassSoil PhSoil PollutionMicrobial Biomass CarbonMicrobial Carbon Use EfficiencyMicrobial Community CompositionMicrobial Functional DiversityMicrobial ImmobilizationMicrobial Soil EcologySoil Microbial CarbonSoil Microbial Processes
), suggesting there was higher energy demand with less microbially immobilized carbon as MBC. Notably, the efficiency of microbial carbon use was repressed as the metal concentration increased, yet no difference was observed between metal types (p > 0.05). Based on the microbial phospholipid fatty acids (PLFA) analysis, total PLFAs decreased significantly under metal stress at the end of incubation. Heavy metals had a greater negative influence on the fungal population than bacteria with respective 5-35 and 8-32% fall in abundances. The contaminant-driven (metal concentrations and types) variation of soil PLFA biomarkers demonstrated that the heavy metals led to the alteration of soil microbial community compositions and their activities, which consequently had an adverse impact on soil microbial carbon immobilization.
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The contentious nature of soil organic matter
Johannes Lehmann, Markus Kleber · Nature · 2015 · 4.3K citations