Dynamics of soil dissolved organic carbon pools reveal both hydrophobic and hydrophilic compounds sustain microbial respiration

• Published in: Soil biology & biochemistry Vol. 79; pp. 109 - 116
• Main Authors: Straathof, Angela L., Chincarini, Riccardo, Comans, Rob N.J., Hoffland, Ellis
• Format: Journal Article
• Language: English
• Published: Amsterdam Elsevier Ltd 01.12.2014; Elsevier
• Subjects: absorbency; absorption; agricultural soils; Agronomy. Soil science and plant productions; Biochemistry and biology; biodegradation; Biological and medical sciences; carbon dioxide; carbon sinks; Chemical, physicochemical, biochemical and biological properties; components; Compost; composts; correlation; Dissolved organic carbon; Fractionation; fulvic acids; Fundamental and applied biological sciences. Psychology; General agronomy. Plant production; greenhouse gas emissions; Humic acids; humic substances; hydrophilicity; hydrophobicity; matter fractions; microbial activity; microbial communities; Microbiology; mineralization; Organic matter; Other nutrients. Amendments. Solid and liquid wastes. Sludges and slurries; Physics, chemistry, biochemistry and biology of agricultural and forest soils; respiratory rate; soil; soil amendments; Soil respiration; Soil science; Soil-plant relationships. Soil fertility. Fertilization. Amendments; Dissolved organic carbon; Compost; Fractionation; Humic acids; Soil respiration; Microbial activity; Organic carbon; Hydrophobicity; Soils; Soil science; Hydrophilic compound; Respiration; Humic acid

The quality of dissolved organic carbon (DOC) released from soil organic amendments may influence soil microbial activity and the quality of the soil's DOC pools. Measurements of total DOC are often considered in relation to microbial activity levels but here we propose that quantification of D...