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Fungi in bottom sediments of the barents and Kara seas

  • Mycology
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Abstract

The mycobiota of bottom sediments at depths of 128−472 m was investigated in Barents and Kara sea areas remote from the shore. The species composition and fungal abundance, that is, the number of fungal colony-forming units (CFUs), were determined in 5 samples from the Kara Sea and in 14 samples of the Barents Sea. For the first time for the Arctic seas, the fungal biomass was determined in 12 samples of the bottom sediments from the Barents Sea. It was found that fungal abundance in the bottom sediments of the both seas did not exceed 13 CFUs per 1 g of dry substrate weight. In total, only 58 colonies of filamentous fungi belonging to 22 morphotypes, 8 of which were sterile, were isolated from all the samples. No more than six morphotypes were contained in 1 g of dried substrate; they were mostly species of the genus Cladosporium and sterile isolates. The study of the fungal biomass detected both spores and fungal mycelium in the bottom sediments. The total biomass was extremely low and ranged from 0.1 to 0.620 mg/g of the studied substrate. Small spores (with a diameter less than 3 μm) absolutely predominated (from 88 to 99.7% of the biomass).

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  1. Moscow State University, Moscow, 119234, Russia

    E. N. Bubnova & D. A. Nikitin

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  1. E. N. Bubnova
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  2. D. A. Nikitin
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Correspondence to E. N. Bubnova.

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Original Russian Text © E.N. Bubnova, D.A. Nikitin, 2017, published in Biologiya Morya.

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Bubnova, E.N., Nikitin, D.A. Fungi in bottom sediments of the barents and Kara seas. Russ J Mar Biol 43, 400–406 (2017). https://doi.org/10.1134/S1063074017050029

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  • DOI: https://doi.org/10.1134/S1063074017050029

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