РЕСПІРАТОРНА АКТИВНІСТЬ БАКТЕРІОБЕНТОСУ У ПРИБЕРЕЖНОМУ ТА ГЛИБОКОВОДНОМУ РАЙОНАХ ПІВНІЧНО-ЗАХІДНОЇ ЧАСТИНИ ЧОРНОГО МОРЯ

• Дата: 2023
• Автори: Чекалов, В. П., Гулін, М. Б.
• Формат: Стаття
• Мова: Ukrainian
• Опубліковано: Marine Ecological Journal 2023
• Теми: окислені та відновлені донні відкладення; бактеріобентос; споживання кисню; метаногенеза; освіта сірководню; Чорне море
• Онлайн доступ: https://mej.od.ua/index.php/mej/article/view/123
• Назва журналу: Marine Ecological Journal

The ratio of potential and real consumption of oxygen as well as numbers of aerobic and anaerobic heterotrophic bacteria in northwestern part of Black Sea sediments with different redox conditions and the depths of the bottom are investigated. Increase concentrations of methane, sulfide ion, and as a result, the absorption of oxygen in the first half of the daylight hours was found. As shown by calculation the rate of aerobic oxidation of organic matter was 0.68 mkg.g-1 in hour. It in aggregate with needs of the assimilation amounts to about 1.7 ± 0.1 mkg.g-1. Growth of biomass was about 1.0 mkg.g-1. A rate produced of oxygen at a depth of 4 m in the near-bottom layer through photosynthesis was 140 – 200 mkgO2.dm-3 in hour. Bottom sediments that vary in content of oxygen were nevertheless it close in rate of aerobic oxygen utilization and by number of oxiphylic microflora. The humidity and the specific gravity of sediments for capability of conversion and comparison of data is advisable indicate.