| Title | Effect of an Equal Dose of Polymetallic Pollution on the Microbiological Characteristics of Two Soils with Diferent Organic Carbon Contents |
| Abstract | Reliable stable indicators are very important for assessing soil quality. This paper compares the dynamics of microbial parameters in two diferent soils (rich/poor in organic carbon), contaminated in laboratory experiments with an equal dose of heavy metals (HMs) after 30 and 90 days. For this purpose, the changes in the number, biomass, and taxonomic structure of bacterial and fungal communities were assessed in microcosm experiments using an organic carbon-rich ordinary chernozem (Ch-humus-rich soil) and a depleted carbon agrozem (Ag-humus-poor soil), spiked with high concentrations of a zinc, lead, and copper solution (1100 Zn+660 Cu+650 Pb mg per kg soil). At the 30th and 90th day from HM contamination, soil samples were collected for analyzing microbial community lipid markers by gas chromatography-mass spectrometry. The results show hboth biomass and taxonomic structure of the bacterial and fungal communities analyzed were diferently sensitive to HM contamination, depending on the type of soil. The Ag-humus-poor soil microbial community was signifcantly afected by the HM pollution with an increase in both fungi and bacteria and inside the latter several species changed their percentages. Diferently, the Ch-humus-rich soil microbial community was not infuenced by the HM addition. However, the negative impact of HM can manifest itself over time, so the microbial structure and its functioning cannot represent accurate indicators of the quality of all soil types. The results show that microbial characteristics should be taken into account only in a comprehensive assessment of soil quality in accordance with ISO 19,204:2017--soil quality TRIAD approach. This approach to environmental risk assessment combines biological data (from bioassay and ecological observations) with chemical analysis. |
| Source | Water, air and soil pollution (Dordr., Online) 232 (292) |
| Keywords | Soil quality indicatorsMicrobial lipid markersHeavy metal pollution· Microbial community · BiomassBiodiversityHumus content |
| Journal | Water, air and soil pollution (Dordr., Online) |
| Editor | Kluwer, Dordrecht, Paesi Bassi |
| Year | 2021 |
| Type | Articolo in rivista |
| DOI | 10.1007/s11270-021-05174-4 |
| Authors | V. A. Terekhova · E. V. Fedoseeva · A. P. Kiryushina · A. Barra Caracciolo · N. V. Verkhovtseva |
| Text | 455168 2021 10.1007/s11270 021 05174 4 Soil quality indicators Microbial lipid markers Heavy metal pollution · Microbial community · Biomass Biodiversity Humus content Effect of an Equal Dose of Polymetallic Pollution on the Microbiological Characteristics of Two Soils with Diferent Organic Carbon Contents V. A. Terekhova · E. V. Fedoseeva · A. P. Kiryushina · A. Barra Caracciolo · N. V. Verkhovtseva Faculty of Soil Science, Lomonosov Moscow State University, Moscow Russia ; Institute of Ecology and Evolution, Moscow, Russia; Pirogov Russian National Research Medical University, Moscow, Russia; Water Research Institute National Research Council, Montelibretti, 00010 Rome, Italy Reliable stable indicators are very important for assessing soil quality. This paper compares the dynamics of microbial parameters in two diferent soils rich/poor in organic carbon , contaminated in laboratory experiments with an equal dose of heavy metals HMs after 30 and 90 days. For this purpose, the changes in the number, biomass, and taxonomic structure of bacterial and fungal communities were assessed in microcosm experiments using an organic carbon rich ordinary chernozem Ch humus rich soil and a depleted carbon agrozem Ag humus poor soil , spiked with high concentrations of a zinc, lead, and copper solution 1100 Zn 660 Cu 650 Pb mg per kg soil . At the 30th and 90th day from HM contamination, soil samples were collected for analyzing microbial community lipid markers by gas chromatography mass spectrometry. The results show hboth biomass and taxonomic structure of the bacterial and fungal communities analyzed were diferently sensitive to HM contamination, depending on the type of soil. The Ag humus poor soil microbial community was signifcantly afected by the HM pollution with an increase in both fungi and bacteria and inside the latter several species changed their percentages. Diferently, the Ch humus rich soil microbial community was not infuenced by the HM addition. However, the negative impact of HM can manifest itself over time, so the microbial structure and its functioning cannot represent accurate indicators of the quality of all soil types. The results show that microbial characteristics should be taken into account only in a comprehensive assessment of soil quality in accordance with ISO 19,204 2017 soil quality TRIAD approach. This approach to environmental risk assessment combines biological data from bioassay and ecological observations with chemical analysis. 232 Published version 10/05/2021 Effect of an Equal Dose of Polymetallic Pollution on the Microbiological Characteristics of Two Soils articolo WaterAirSoilPollutionHM_Terekovaetal2021.pdf Articolo in rivista Kluwer 1573 2932 Water, air and soil pollution Dordr., Online Water, air and soil pollution Dordr., Online Water air soil pollut. Dordr., Online Water, air and soil pollution. Dordr., Online Water, air soil pollution Dordr., Online anna.barracaracciolo BARRA CARACCIOLO ANNA |
