Bacterioneuston in Lake Baikal: Abundance, Spatial and Temporal Distribution
| Autor: | Valentina M. Domysheva, A. D. Galachyants, E. A. Zimens, Yulia R. Shtykova, E. V. Sukhanova, Maria V. Sakirko, V. V. Blinov, M. Suslova, Irina V. Tomberg, Olga I. Belykh |
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| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: |
0301 basic medicine
Health Toxicology and Mutagenesis 030106 microbiology Heterotroph Stratification (water) lcsh:Medicine surface microlayer Spatial distribution Bacterial Physiological Phenomena Article Russia 03 medical and health sciences Abundance (ecology) environmental factors Lake Baikal Chemical composition Total organic carbon bacterioneuston Ancient lake lcsh:R Public Health Environmental and Occupational Health Temperature total bacterial abundance Heterotrophic Processes Particulates Carbon Lakes 030104 developmental biology number of cultured heterotrophic bacteria Environmental chemistry Particulate Matter Seasons Water Microbiology Environmental Monitoring |
| Zdroj: | International Journal of Environmental Research and Public Health, Vol 15, Iss 11, p 2587 (2018) International Journal of Environmental Research and Public Health Volume 15 Issue 11 |
| ISSN: | 1660-4601 |
| Popis: | An aquatic surface microlayer covers more than 70% of the world&rsquo s surface. Our knowledge about the biology of the surface microlayer of Lake Baikal, the most ancient lake on Earth with a surface area of 31,500 km2, is still scarce. The total bacterial abundance, the number of cultured heterotrophic temporal bacteria, and the spatial distribution of bacteria in the surface microlayer and underlying waters of Lake Baikal were studied. For the first time, the chemical composition of the surface microlayer of Lake Baikal was determined. There were significant differences and a direct relationship between the total bacterial abundance in the surface microlayer and underlying waters of Lake Baikal, as well as between the number of cultured heterotrophic bacteria in studied water layers in the period of summer stratification. In the surface microlayer, the share of cultured heterotrophic bacteria was higher than in the underlying waters. The surface microlayer was characterized by enrichment with PO43&minus total organic carbon and suspended particulate matter compared to underlying waters. A direct relationship was found between the number of bacteria in the surface microlayer and environmental factors, including temperature, total organic carbon and suspended particulate matter concentration. |
| Databáze: | OpenAIRE |
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