The diffusive boundary layer of sediments: oxygen microgradients over a microbial mat.

@article{Jorgensen1990TheDB,
  title={The diffusive boundary layer of sediments: oxygen microgradients over a microbial mat.},
  author={Bo Barker Jorgensen and David J Des Marais},
  journal={Limnology and oceanography},
  year={1990},
  volume={35 6},
  pages={1343-55}
}
Oxygen microelectrodes were used to analyze the distribution of the diffusive boundary layer (DBL) at the sediment-water interface in relation to surface topography and flow velocity. The sediment, collected from saline ponds, was covered by a microbial mat that had high oxygen consumption rate and well-defined surface structure. Diffusion through the DBL constituted an important rate limitation to the oxygen uptake of the sediment. The mean effective DBL thickness decreased from 0.59 to 0.16… CONTINUE READING