Impact of biochar application on soil quality and microbial communities in a trace element polluted soil
Microorganisms play a key role on soil organic matter decomposition, nutrient cycling and soil health. High concentrations of trace elements in soils can negatively affect soil microbiological properties1. Recent studies have shown that biochar can act as an effective tool for the remediation of soils contaminated with trace elements2. This work evaluates the effects on soil microbial community of two different biochars used as amendment in two trace-element contaminated Typic Xerofluvent soils. They were sampled in a site affected by the breaching of a tailings dam in 1998, flooding 4.286 ha of lands close to Aznalcóllar (SW, Spain). The soils used for this study have two different levels of contamination: a) moderately polluted (MPS) and b) highly polluted (HPS). Rice husk and olive pit biochars (RHB and OPB respectively) were produced in a continuously feed reactor (500 ºC, average residence time 12 min; N2 atmosphere). The remediation potential of these biochars was tested by applying 0 and 8 t ha-1 to the topsoil layer in plots of 1 m2. Microbial communities were studied in the amended and unamended soils by DNA-based analyses. For comparison purposes, dehydrogenase (DHA), ß-glucosidase (BGA) enzymatic activities and soil respiration (6400-09 Soil CO2 Flux Chamber LI-COR) were measured for all the plots. Finally, FESEM-EDS analysis was performed to appraise changes produced on biochar particles throughout the field experiment time. FESEM images showed the presence of filamentous microbial structures on biochar surfaces, Ca-S particles in OPB and high content of Si in RHB. Amendment of the MPS with RHB decreased soil respiration and DHA. In contrast, OPB amendment increased BGA in MPS after 6 months. Preliminary results showed a greater stability of RHB than OPB, which may be of relevance for its use in the restoration of soils contaminated with trace elements. References: [1] Gans, J.; Wolinsky, M.; Dunbar, J.; 2005. Science, 309 (5739), 1387-1390. [2] Uchimiya, M.; Klasson, K.T.; Wartelle, L.H.; Lima, I.M.; 2011. Chemosphere 82, 1438-1447.
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International Union of Soil Sciences
2019-06-23
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Subjects: | Enzymatic activities, Biochar, Soil microbiota, Soil amendment, |
Online Access: | http://hdl.handle.net/10261/189323 http://dx.doi.org/10.13039/501100000780 http://dx.doi.org/10.13039/501100010805 http://dx.doi.org/10.13039/501100010198 |
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dig-irnas-es-10261-1893232020-10-23T09:29:25Z Impact of biochar application on soil quality and microbial communities in a trace element polluted soil Campos Díaz de Mayorga, Paloma Miller, A. Z. López Núñez, Rafael Hagemann, Nikolas Knicker, Heike Rosa Arranz, José M. de la Ministerio de Economía, Industria y Competitividad (España) European Commission Fundación Tatiana Pérez de Guzmán el Bueno Enzymatic activities Biochar Soil microbiota Soil amendment Microorganisms play a key role on soil organic matter decomposition, nutrient cycling and soil health. High concentrations of trace elements in soils can negatively affect soil microbiological properties1. Recent studies have shown that biochar can act as an effective tool for the remediation of soils contaminated with trace elements2. This work evaluates the effects on soil microbial community of two different biochars used as amendment in two trace-element contaminated Typic Xerofluvent soils. They were sampled in a site affected by the breaching of a tailings dam in 1998, flooding 4.286 ha of lands close to Aznalcóllar (SW, Spain). The soils used for this study have two different levels of contamination: a) moderately polluted (MPS) and b) highly polluted (HPS). Rice husk and olive pit biochars (RHB and OPB respectively) were produced in a continuously feed reactor (500 ºC, average residence time 12 min; N2 atmosphere). The remediation potential of these biochars was tested by applying 0 and 8 t ha-1 to the topsoil layer in plots of 1 m2. Microbial communities were studied in the amended and unamended soils by DNA-based analyses. For comparison purposes, dehydrogenase (DHA), ß-glucosidase (BGA) enzymatic activities and soil respiration (6400-09 Soil CO2 Flux Chamber LI-COR) were measured for all the plots. Finally, FESEM-EDS analysis was performed to appraise changes produced on biochar particles throughout the field experiment time. FESEM images showed the presence of filamentous microbial structures on biochar surfaces, Ca-S particles in OPB and high content of Si in RHB. Amendment of the MPS with RHB decreased soil respiration and DHA. In contrast, OPB amendment increased BGA in MPS after 6 months. Preliminary results showed a greater stability of RHB than OPB, which may be of relevance for its use in the restoration of soils contaminated with trace elements. References: [1] Gans, J.; Wolinsky, M.; Dunbar, J.; 2005. Science, 309 (5739), 1387-1390. [2] Uchimiya, M.; Klasson, K.T.; Wartelle, L.H.; Lima, I.M.; 2011. Chemosphere 82, 1438-1447. The former Spanish Ministry of Economy, Industry and Competitiveness (MINEICO) and AEI/FEDER are thanked for funding the projects CGL2016-76498-R and CGL2015-64811-P. P. Campos thanks >Fundación Tatiana Pérez de Guzmán el Bueno> for funding her PhD. Peer Reviewed 2019-08-29T06:31:51Z 2019-08-29T06:31:51Z 2019-06-23 2019-08-29T06:31:51Z póster de congreso http://purl.org/coar/resource_type/c_6670 ISMOM 2019 - 8th International Symposium on Interactions of Soil Minerals with Organic Components and Microorganisms: 23-28 june, Sevilla (Spain) http://hdl.handle.net/10261/189323 http://dx.doi.org/10.13039/501100000780 http://dx.doi.org/10.13039/501100010805 http://dx.doi.org/10.13039/501100010198 #PLACEHOLDER_PARENT_METADATA_VALUE# #PLACEHOLDER_PARENT_METADATA_VALUE# info:eu-repo/grantAgreement/MINECO/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/CGL2016-76498-R info:eu-repo/grantAgreement/MINECO/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/CGL2015-64811-P Sí none International Union of Soil Sciences |
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Enzymatic activities Biochar Soil microbiota Soil amendment Enzymatic activities Biochar Soil microbiota Soil amendment Campos Díaz de Mayorga, Paloma Miller, A. Z. López Núñez, Rafael Hagemann, Nikolas Knicker, Heike Rosa Arranz, José M. de la Impact of biochar application on soil quality and microbial communities in a trace element polluted soil |
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Microorganisms play a key role on soil organic matter decomposition, nutrient cycling and soil health. High concentrations of trace elements in soils can negatively affect soil microbiological properties1. Recent studies have shown that biochar can act as an effective tool for the remediation of soils contaminated with trace elements2. This work evaluates the effects on soil microbial community of two different biochars used as amendment in two trace-element contaminated Typic Xerofluvent soils. They were sampled in a site affected by the breaching of a tailings dam in 1998, flooding 4.286 ha of lands close to Aznalcóllar (SW, Spain). The soils used for this study have two different levels of contamination: a) moderately polluted (MPS) and b) highly polluted (HPS). Rice husk and olive pit biochars (RHB and OPB respectively) were produced in a continuously feed reactor (500 ºC, average residence time 12 min; N2 atmosphere). The remediation potential of these biochars was tested by applying 0 and 8 t ha-1 to the topsoil layer in plots of 1 m2. Microbial communities were studied in the amended and unamended soils by DNA-based analyses. For comparison purposes, dehydrogenase (DHA), ß-glucosidase (BGA) enzymatic activities and soil respiration (6400-09 Soil CO2 Flux Chamber LI-COR) were measured for all the plots. Finally, FESEM-EDS analysis was performed to appraise changes produced on biochar particles throughout the field experiment time.
FESEM images showed the presence of filamentous microbial structures on biochar surfaces, Ca-S particles in OPB and high content of Si in RHB. Amendment of the MPS with RHB decreased soil respiration and DHA. In contrast, OPB amendment increased BGA in MPS after 6 months. Preliminary results showed a greater stability of RHB than OPB, which may be of relevance for its use in the restoration of soils contaminated with trace elements.
References:
[1] Gans, J.; Wolinsky, M.; Dunbar, J.; 2005. Science, 309 (5739), 1387-1390.
[2] Uchimiya, M.; Klasson, K.T.; Wartelle, L.H.; Lima, I.M.; 2011. Chemosphere 82, 1438-1447. |
author2 |
Ministerio de Economía, Industria y Competitividad (España) |
author_facet |
Ministerio de Economía, Industria y Competitividad (España) Campos Díaz de Mayorga, Paloma Miller, A. Z. López Núñez, Rafael Hagemann, Nikolas Knicker, Heike Rosa Arranz, José M. de la |
format |
póster de congreso |
topic_facet |
Enzymatic activities Biochar Soil microbiota Soil amendment |
author |
Campos Díaz de Mayorga, Paloma Miller, A. Z. López Núñez, Rafael Hagemann, Nikolas Knicker, Heike Rosa Arranz, José M. de la |
author_sort |
Campos Díaz de Mayorga, Paloma |
title |
Impact of biochar application on soil quality and microbial communities in a trace element polluted soil |
title_short |
Impact of biochar application on soil quality and microbial communities in a trace element polluted soil |
title_full |
Impact of biochar application on soil quality and microbial communities in a trace element polluted soil |
title_fullStr |
Impact of biochar application on soil quality and microbial communities in a trace element polluted soil |
title_full_unstemmed |
Impact of biochar application on soil quality and microbial communities in a trace element polluted soil |
title_sort |
impact of biochar application on soil quality and microbial communities in a trace element polluted soil |
publisher |
International Union of Soil Sciences |
publishDate |
2019-06-23 |
url |
http://hdl.handle.net/10261/189323 http://dx.doi.org/10.13039/501100000780 http://dx.doi.org/10.13039/501100010805 http://dx.doi.org/10.13039/501100010198 |
work_keys_str_mv |
AT camposdiazdemayorgapaloma impactofbiocharapplicationonsoilqualityandmicrobialcommunitiesinatraceelementpollutedsoil AT milleraz impactofbiocharapplicationonsoilqualityandmicrobialcommunitiesinatraceelementpollutedsoil AT lopeznunezrafael impactofbiocharapplicationonsoilqualityandmicrobialcommunitiesinatraceelementpollutedsoil AT hagemannnikolas impactofbiocharapplicationonsoilqualityandmicrobialcommunitiesinatraceelementpollutedsoil AT knickerheike impactofbiocharapplicationonsoilqualityandmicrobialcommunitiesinatraceelementpollutedsoil AT rosaarranzjosemdela impactofbiocharapplicationonsoilqualityandmicrobialcommunitiesinatraceelementpollutedsoil |
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