Details zur Publikation

Referenztyp Zeitschriften
DOI / URL Link
Titel (primär) Fate of fatty acids derived from biogas residues in arable soil
Autor Coban, H.; Miltner, A.; Kästner, M.;
Journal / Serie Soil Biology & Biochemistry
Erscheinungsjahr 2015
Department UBT;
Band/Volume 91
Sprache englisch;
POF III (gesamt) T41; T15;
Keywords Biogas residues; Soil organic matter formation; Fatty acids
UFZ Querschnittsthemen RU3;
Abstract Biogas residues are rich in microbial biomass and contribute to organic matter formation when applied to soils. Here we present a detailed analysis of the fatty acids derived from 13C-labelled biogas residues applied to arable soil and incubated for 378 days. We applied a differential approach using phospholipid fatty acids and total fatty acids to evaluate the carbon dynamics in living biomass and non-living soil organic matter. Biogas residue addition increased the microbial biomass in soil. The sum of 13C-labelled phospholipid fatty acids decreased to ∼60% during incubation whereas the decrease of t-FA was higher (to 33%). Compound-specific fatty acid analysis showed fatty acid specific incorporation or loss of 13C, indicating hints for the carbon flow within the microbial food web. Overall, microbial biomass in biogas residues may be a significant contributor to soil organic matter formation.
ID 16602
dauerhafte UFZ-Verlinkung
Coban, H., Miltner, A., Kästner, M. (2015):
Fate of fatty acids derived from biogas residues in arable soil
Soil Biol. Biochem. 91 , 58 - 64