Impact of bacterial NO3(super -) transport on sediment biogeochemistry

Article Abstract:

A study is conducted to demonstrate that Beggiatoa could induce a H2S-depleted suboxic zone of more than 10 mm in marine sediments and cause a divergence in sediment NO3(super -) reduction from denitrification to dissimilatory NO3(super -) reduction to ammonium. pH, O2, and H2S profiles indicated that the bacteria oxidized H2S with NO3(super -) and transported S(super 0) to the sediment surface for aerobic oxidation.

Analysis, Biogeochemistry, Denitrification

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Biofilm cohesiveness measurement using a novel atomic force microscopy methodology

Article Abstract:

A novel atomic force microscopy (AFM) method which was developed for reproducibly measuring the cohesive energy levels of moist 1-day biofilms is presented.

Usage, Microbial mats, Atomic force microscopy

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