Articles | Volume 2, issue 4
SOIL, 2, 499–509, 2016
https://doi.org/10.5194/soil-2-499-2016
SOIL, 2, 499–509, 2016
https://doi.org/10.5194/soil-2-499-2016

Original research article 04 Oct 2016

Original research article | 04 Oct 2016

Enzymatic biofilm digestion in soil aggregates facilitates the release of particulate organic matter by sonication

Frederick Büks and Martin Kaupenjohann

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Short summary
Soil aggregate stability and POM occlusion are integral markers for soil quality. Besides physico-chemical interactions, biofilms are considered to aggregate primary particles, but experimental proof is still missing. In our experiment, soil aggregate samples were treated with biofilm degrading enzymes and showed a reduced POM occlusion and an increased bacteria DNA release compared with untreated samples. Thus, biofilms are assumed to be an important factor of POM occlusion in soil aggregates.