Plant litter decomposition in a semi-arid ecosystem controlled by photodegradation

Article Abstract:

The influence of solar radiation, soil biotic activity, and soil resource availability on plant litter decomposition in a semi-arid Patagonian steppe ecosystem is examined, and it is observed that only intercepted solar radiation has a significant effect on the decomposition of organic matter. It is concluded that photodegradation is a dominating influence on the above-ground litter decomposition in a semi-arid ecosystem, with substantial carbon from plants being lost directly to the atmosphere by photochemical mineralization.

Solar radiation, Arid regions

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The decay of organic aerosols

Article Abstract:

A mechanism is proposed for the OH(super .)-induced oxidative degradation of organic aerosols. The study concluded that oxidative degradation and removal by precipitation occur at comparable rates, and that OH(super .)-induced oxidation is a significant mechanism that can eliminate organic aerosols from the atmosphere.

Atmospheric chemistry, Aerosols

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Detoxification of vinyl chloride to ethene coupled to growth of an anaerobic bacterium

Article Abstract:

Research shows that anaerobic Dehalococcoides ethenogenes strains use dichloroethenes and vinyl chloride in their energy metabolism to produce biomass, ethene and inorganic chloride, indicating that D. ethenogenes can be employed to decontaminate subsurface environments and to restore drinking-water reservoirs.

All Other Basic Organic Chemical Manufacturing, Management dynamics, Industrial Organic Chemicals, Chlorinated Solvents, Management, Pollution, Company business management, Hazardous wastes

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