Тип публикации: статья из журнала

Год издания: 2023

Идентификатор DOI: 10.1016/j.envpol.2023.121269

Ключевые слова: carbon pools, microbial respiration, arctic, soil pollution, hydrocarbon degradation, carbon emission

Аннотация: Arctic contamination by diesel fuel (DF) is of great concern because of the uncertain feedback of permafrost carbon (C) and soil microbiota to DF in the context of climate change in high latitudes. We conducted a laboratory incubation experiment with a gradient of DF addition ratios to examine the responses of the soil microbiota oПоказать полностьюf the typical permafrost soils in the tundra ecosystems of the Norilsk region (Siberia). The study revealed initial heterogeneity in the microbial activity of the studied soils (Histic Gleyic Cryosols (CR-hi,gl), Turbic Cryosols (CR-tu), Turbic Spodic Folic Cryosols (CR-tu,sd,fo), Gleyic Fluvisols (FL-gl)). We applied the two-pool model for evaluation of the effect of DF on the proportions of C pools and revealed significant differences between soil types in the fast and slow C pools in response to DF addition. The results showed that DF addition treatments had varying effects on the fast and slow C pools, microbial activity, and microbial community structure in the studied soils. For minor exceptions, DF dramatically accelerated C loss from the slow C pool in all soil types. We assume that differences in C pool and microbiota responses to DF addition were caused by soil texture and changes in microbial community structure. We isolated Serratia proteamaculans, S. liquefaciens, S. plymuthica, Rhodococcus erythropolis, Pseudomonas antarctica, P. libanensis, P. brassicacearum, and P. chlororaphis from the DF-polluted soils. These species are recommended for bioremediation to mitigate the DF contamination of permafrost soils, especially regarding climate change and the sustainable well-being of Arctic ecosystems.

Журнал: Environmental Pollution

Выпуск журнала: Т. 323

Номера страниц: 121269

ISSN журнала: 02697491

Издатель: Elsevier Science Publishing Company, Inc.

• Masyagina O.V. (Sukachev Institute of Forest SB RAS, Federal Research Center “Krasnoyarsk Science Center SB RAS”)
• Matvienko A.I. (Sukachev Institute of Forest SB RAS, Federal Research Center “Krasnoyarsk Science Center SB RAS”)
• Ponomareva T.V. (Sukachev Institute of Forest SB RAS, Federal Research Center “Krasnoyarsk Science Center SB RAS”)
• Grodnitskaya I.D. (Siberian Federal University)
• Sideleva Elizaveta V. (Siberian Federal University)
• Kadutskiy Valeriy K. (Sukachev Institute of Forest SB RAS, Federal Research Center “Krasnoyarsk Science Center SB RAS”)
• Prudnikova S.V. (Siberian Federal University)
• Bezbido Viktoria S. (Krasnoyarsk Regional Clinical Сentre of Motherhood and Сhildhood Care)
• Kudryavtseva Kristina A. (Krasnoyarsk Regional Clinical Сentre of Motherhood and Сhildhood Care)
• Evgrafova S.Yu. (Melnikov Permafrost Institute of the Siberian Branch of the Russian Academy of Science)

• Ядро РИНЦ (eLIBRARY.RU)