Photochemical release of biologically available nitrogen from aquatic dissolved organic matter

Article Abstract:

Sunlight induces the release of nitrogen-rich compounds from organic matter dissolved in marine and freshwater in a form that is biologically available to bacteria. This increases the biodegradation of humic substances. The released nitrogen compounds are mainly those of ammonium. Ultraviolet radiations induce the release of large amounts of ammonium compounds. The reaction is important for the bioavailability of nitrogen in aquatic systems.

Analysis, Water, Nitrogen (Chemical element), Water chemistry, Nitrogen compounds, Bioavailability, Solar radiation

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Genome sequence of Silicibacter pomeroyi reveals adaptations to the marine environment

Article Abstract:

The genome sequence of Silcibacter pomeroyi, a member of the marine Roseabacter clade, the relatives of which comprises ~10-20% of coastal and oceanic mixed-layer bacterioplankton is described. Genome analysis indicates that this organic compounds (carbon monoxide and sulphide) to supplement heterotrophy.

Bacterial genetics, Biogeochemistry, Genetic research

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Bacterial carbon processing by generalist species in the coastal ocean

Article Abstract:

The processing of bacterial and dissolved oxygen carbon (DOC) in the coastal ocean by different generalist species is discussed. The findings show that the coastal heterotrophic communities are mainly affected by the factors including trophic interactions and physical conditions.

Composition, Marine bacteria, Ocean, Oceans, Biogeochemical cycles, Dissolved oxygen

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