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[Microbiological processes at the interface of aerobic and anaerobic waters in the deep-water zone of the Black Sea].
- Source :
-
Mikrobiologiia [Mikrobiologiia] 2000 Jul-Aug; Vol. 69 (4), pp. 527-40. - Publication Year :
- 2000
-
Abstract
- Chemical and key microbiological processes (assimilation of carbon dioxide, oxidation and formation of methane, and sulfate reduction) occurring at the boundary between the aerobic-anaerobic interface in the deep-water zone of the Black Sea were investigated. Measurements were taken at depths from 90 to 300 m at intervals of 5-10 m. The integral rate of the dark assimilation of carbon dioxide varied from 120 to 207 mg C/(m2 day) with a maximum at the boundary of cyclonic currents. The organic matter (OM) formed from methane comprised less than 5% of the OM formed from carbon dioxide. A comparison between the rates of methane oxidation and methane production suggests that methane that is oxidized at depths from 100 to 300 m was formed in deeper water horizons. The maximum rate of sulfate reduction (1230 mg S/(m2 day)) was observed in the western halistatic region, and the minimum rate (490 mg S/(m2 day)), in the eastern halistatic region. The average rate of hydrogen sulfide production measured at three deep-sea stations amounted to 755 mg S/(m2 day), or 276 g S/(m2 year).
Details
- Language :
- Russian
- ISSN :
- 0026-3656
- Volume :
- 69
- Issue :
- 4
- Database :
- MEDLINE
- Journal :
- Mikrobiologiia
- Publication Type :
- Academic Journal
- Accession number :
- 11008690