| Title | Gasification biochar has limited effects on functional and structural diversity of soil microbial communities in a temperate agroecosystem |
| Publication Type | Journal Article |
| Year of Publication | 2016 |
| Authors | Imparato V., Hansen V., Santos S.S, Nielsen T.K, Giagnoni L., Hauggaard-Nielsen H., Johansen A., Renella G., Winding A. |
| Journal | Soil Biology and Biochemistry |
| Volume | 99 |
| Pagination | 128-136 |
| Date Published | Aug |
| Type of Article | Article |
| ISBN Number | 0038-0717 |
| Accession Number | WOS:000379373700014 |
| Keywords | 16S Illumina sequencing, Acidobacteria, AMENDMENT, ANTHROSOLS, bacterial communities, BLACK CARBON, Carbon sequestration, CONTRASTING SOILS, Microbial activity, MicroResp, MULTIVARIATE ANALYSES, OXIDATION, Toxicity test, VOLATILE ORGANIC-COMPOUNDS, WHEAT CROP |
| Abstract | Biochar may enhance soil fertility and carbon (C) sequestration but there is still a lack of comprehensive understanding of its effects on soil microbial communities and functioning. This study tested the differential effects of two doses (6-8 and 0.8-1.4 t ha(-1) for High and Low doses, respectively) of wheat straw gasification biochar (GBC) and fresh straw incorporated as soil amendments into an agricultural field in Denmark. Soils were analysed three months after the amendments for pH, total organic matter, microbial biomass (ATP), ten enzymatic activities, catabolic potential by substrate-induced respiration (MicroResp (TM)), soil toxicity test (BioTox (TM)) and bacterial community structure (Illumina 16S rRNA gene sequencing). No significant effect of biochar treatment was observed regarding ATP content, catabolic community profiles and soil toxicity. The higher dose of GBC increased phenol oxidase activity and soil pH, and decreased the cellulase activity. No major effect of high dose GBC was observed on the soil community diversity, and only minor effect on the community composition, with an increase in the relative abundance of a single OTU associated with Acidobacteria_Gp16. Addition of low dose of GBC caused an increase in the relative abundance of the rare members in the microbial communities thus increasing the diversity of soil microorganisms. A comparable effect was observed with the addition of fresh straw. Overall, our results indicated that GBC as soil amendment had a limited effect on the functional and structural diversity of soil microbial communities in a Danish temperate agroecosystem. (C) 2016 Elsevier Ltd. All rights reserved.
|
| Short Title | Soil Biol. Biochem.Soil Biol. Biochem. |
| Alternate Journal | Soil Biol. Biochem. |
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Imparato, Valentina Hansen, Veronika Santos, Susana S. Nielsen, Tue Kjaergaard Giagnoni, Laura Hauggaard-Nielsen, Henrik Johansen, Anders Renella, Giancarlo Winding, Anne
INSURANCE project (VILLUM Foundation) [VKR022521]; EU-FP7-PEOPLE-ITN (Trainbiodiverse) [289949]
We are grateful to Tina Thane for skilful technical assistance and to Ruggero La Rosa for excellent help during image editing. We are grateful to the INSURANCE project (supported by a grant from the VILLUM Foundation VKR022521), to DONG Energy for providing us with the straw gasification biochar samples and Bregentved Estate providing the access to their agricultural field trial treated with GBC. The study was financed by EU-FP7-PEOPLE-2011-ITN (Trainbiodiverse, project number 289949).
14
PERGAMON-ELSEVIER SCIENCE LTD
OXFORD
SOIL BIOL BIOCHEM
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