THE VERTICAL DISTRIBUTION OF THE DEEP-WATER CILIATES IN THE BLACK SEA
Keywords:
Ciliophora, Black Sea, benthos, great depthsAbstract
The materials on vertical distribution of the bottom Ciliophora in the Black Sea at the depths from 120 to 2075 m have been given. Hydrogensulfide began to be registered from 160 – 170 m. Three peaks of ciliates abundance at the depths of 120, 160 and 240 m were marked. Average abundance peak coincides with the depths of hydrogen sulfide appearance. Besides, according to the data available, at the same depths there are pelagic peaks of intensity of bacterial hemosynthesis and bacteria production. Therefore ciliates abundance peaks can be connected with food accumulations. In other meromictic water reservoirs microplankton densing were observed also in the region of transit from aerobic waters to anaerobic ones. The most number of ciliates morphotypes (8) was at the 240 m depth, in the region of the lower peak of abundance.
References
Азовский А. И., Мазей Ю. А. Инфузории мягких грунтов северо-восточного побережья Чёрного моря // Зоол. журн. – 2003. – 82, №8. – С. 899 – 912.
Гулин М. Б. Изучение бактериальных процессов сульфатредукции и хемосинтеза в водной среде Чёрного моря: автореф. дисс. … канд. биол. наук. – Севастополь, 1991. – 20 с.
Сергеева Н. Г., Заика В. Е. Ciliophora в сероводородной зоне Чёрного моря // Морск. экол. журн. – 2008. – 7, №1. – С. 80 – 85.
Azovsky A. I., Mazei Y. A. A conspectus of the Black Sea fauna of benthic ciliates // Protistology. – 2003. – 3, 2. – Р. 72 – 91.
Behnke A., Bunge J., Barger K. et al. Microeukaryote community pattern along O2/H2S gradient in supersulphuridic anoxic fjord (Framvaren, Norwey) // Appl. Environ. Microbiol. – 2006. – 72, 5. – P. 3626 – 3636.
Fenchel T., Kristensen L. D., Rasmussen L. Water column anoxia: vertical zonation of planktonic protozoa // Mar. Ecol. Progr. – 1990. – Ser. 62. – P. 1 – 10.
Massana R., Pedros-Alio C. Role of anaerobic ciliates in planktonic food webs: abundance, feeding, and impact on bacteria in the field // Appl. Environ. Microbiol. – 1994. – 60, 4. – P. 1325 – 1334.
Pimenov N. V., Rusanov I. I., Yusupov S. K. et al. Microbial processes at the aerobic-anaerobic interface in deep-water zone of the Black Sea // Microbiology. – 2000. – 69, № 4. – Р. 436 – 448.
Sorokin Yu. I., Sorokina O. V. Primary production and bacterioplankton dynamics in the Black Sea during the cold season // Морск. экол. журн. – 2008. – 7, № 2. – С. 65 – 75.
Stoeck Th., Taylor G., Epstein S. Novel eukaryotes from the permanently anoxic Cariaco basin (Caribbean Sea) // Appl. Environ. Microbiol. – 2003. – Sept. 2003. – Р. 5656 – 5663.
