Biogeotransformation of bog ecosystems organic substance of Northern Eurasia

• Published in: IOP conference series. Earth and environmental science Vol. 211; no. 1; pp. 12030 - 12036
• Main Authors: Selyanina, S B, Zubov, I N, Orlov, A S, Zabelina, S A, Yarygina, O N, Tatarintseva, V G
• Format: Journal Article
• Language: English
• Published: IOP Publishing 17.12.2018
• ISSN: 1755-1307; 1755-1315; 1755-1315
• DOI: 10.1088/1755-1315/211/1/012030

In this paper, the results of complex research of the processes in a peat deposit are presented. A peat moss bog which formed under the geoclimatic conditions of Northern European Russia is used as an example. It is experimentally proved that the processes of drastic biogeotransformation of organic matter take place both in the peat-forming layer and in anaerobic conditions under the influence of exoenzymes and in acid conditions (a zone of conservation). This is shown by the physical-chemical, chemical, and microbiological parameters, as well as the stratigraphical flexibility of the indexes of oxidation-reduction potential (ORP), the chemical composition of organic substance, and the structure of microbiological peat communities. It is shown that while forming humic substances, the condensed and less unstable compounds, hydrolysis and assimilation of easy hydrolysable substances and some bitumen components by microorganisms significantly contribute to the biodegradation of peat organic matter. In spite of the fact that these substances are relatively stable, their composition and structure can vary along with other organic components of peat. This can significantly affect the geobarrier functions of peat deposits.