The Structure of the Microbial Communities in Low-Moor
and High-Moor Peat Bogs of Tomsk Oblast

T. G. Dobrovol’skaya^a, A. V. Golovchenko^a, O. S. Kukharenko^a, A. V. Yakushev^a,
T. A. Semenova^b, and L. A. Inisheva^c

^a Faculty of Soil Science, Lomonosov Moscow State University, Moscow, 119991 Russia

E-mail: dobrtata@mail.ru

^b Severtsov Institute of Ecology and Evolution, Russian Academy of Sciences, pr. Leninskii 33, Moscow, 119071 Russia

E-mail: tashino@mail.ru

^c Tomsk State Pedagogical University, ul. Kievskaya 60, Tomsk, 634050 Russia

E-mail: inisheva@mail.ru

Received November 19, 2910

Abstract—The number, structure, and physical state of the microbial communities in high-moor and low-moor
peat bogs were compared. Distinct differences in these characteristics were revealed. The microbial biomass in
the high-moor peat exceeded that in the low-moor peat by 2–9 times. Fungi predominated in the high-moor
peat, whereas bacteria were the dominant microorganisms in the low-moor peat. The micromycetal complexes
of the high-moor peat were characterized by a high portion of dark-colored representatives; the complexes of
the low-moor peat were dominated by fast-growing fungi. The species of the Penicillum genus were dominant
in the high-moor peat; the species of Trichoderma were abundant in the low-moor peat. In the former, the bac-
teria were distinguished as minor components; in the latter, they predominated in the saprotrophic bacterial
complex. In the high-moor peat, the microorganisms were represented by bacilli, while, in the low-moor peat,
by cytophages, myxobacteria, and actinobacteria. The different physiological states of the bacteria in the stud-
ied objects reflecting the duration of the lag phase and the readiness of the metabolic system to consume differ-
ent substrates were demonstrated for the first time. The relationships between the trophic characteristics of bac-
terial habitats and the capacity of the bacteria to consume substrates were established.

DOI: 10.1134/S1064229312030039

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