Post-Pyrogenic Changes in the Microflora and Chemical Composition of Peat Waters of the Drained Area of the Bakchar Bog (Tomsk Region)

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A comparative analysis of changes in the microbiological and chemical composition of water and peat in the drained reference and post-pyrogenic areas of the Bakchar bog was performed during the growing season of 2022. It has been revealed that peat-bog fire effect persists in the upper layer (up to 50 cm) of the post-pyrogenic area even 6 years after the fire. It manifests itself in a disruption of the seasonal dynamics of the content of a number of components (O2, CO2, NH+4, NO–3), and in the variance of count of microflora of different physiological groups, such as ammonifying, pedotrophic, oligotrophic, hydrocarbon-oxidizing, cellulose-destructing, denitrifying, and sulfate-reducing groups. In addition, the correlations between the analyzed microbiological and physicochemical parameters differ for the reference and post-pyrogenic areas, which suggests the long-term pyrogenic effect on the processes of accumulation and destruction of organic matter.

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作者简介

V. Ovsyannikova

Institute of Petroleum Chemistry, Siberian Branch of the Russian Academy of Sciences

编辑信件的主要联系方式.
Email: varja@ipc.tsc.ru
俄罗斯联邦, Tomsk

Yu. Kharanzhevskaya

Siberian Research Institute of Agriculture and Peat of the Russian Academy of Agricultural Sciences; National Research Tomsk State University

Email: kharan@yandex.ru
俄罗斯联邦, Tomsk; Tomsk

A. Sinyutkina

Siberian Research Institute of Agriculture and Peat of the Russian Academy of Agricultural Sciences

Email: varja@ipc.tsc.ru
俄罗斯联邦, Tomsk

参考

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2. Fig. 1. Change of dissolved O2 and CO2 concentration in bog waters of the drained background (a) and post-pyrogenic (b) areas of the Bakchar bog during the season

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3. Fig. 2. Change of COD and Eh in bog waters of drained background (a) and post-pyrogenic (b) areas of Bakchar bog during the season

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4. Fig. 3. Variation of NH4+ NO3- concentration in bog waters of drained background (a) and post-pyrogenic (b) areas of Bakchar bog during the season

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5. Fig. 4. Dynamics of ammonifying (a) and pedotrophic (b) microflora abundance in peat of drained background and post-pyrogenic areas of the Bakchar bog during the 2022 season

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6. Fig. 5. Population dynamics of oligotrophic (a), cellulose-degrading (b) and hydrocarbon-oxidising (c) bacteria in peat of the drained background and post-pyrogenic areas of the Bakchar bog during the 2022 season

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7. Fig. 6. Population dynamics of denitrifying (a) and sulfate-reducing (b) bacteria in peat of the drained background and post-pyrogenic areas of the Bakchar bog during the 2022 season

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