Percentage of gelatinolytic bacteria among heterotrophic bacteria as indicator of water quality
Copyright policy )Percentage of gelatinolytic bacteria among heterotrophic bacteria as indicator of water quality
The relationship between the physiological group of gelatinolytic bacteria and the abundance of heterotrophic bacteria in freshwater ecosystems was described, based on analysis of 1082 different freshwater samples collected in Croatia. Percentages of gelatinolytic bacteria among the population of heterotrophic bacteria showed a significant negative correlation with the abundance of heterotrophic bacteria. The relation between the physiological group (gelatinolytic bacteria) and heterotrophic bacteria can be considered to be an indicator of the pollution degree of freshwaters. A high relative content of gelatinolytic bacteria (> 76%) always indicates the colony-forming units of heterotrophic bacteria < 1000/mL, which corresponds to the high water quality; gelatinolytic bacteria < 11% indicate polluted waters. Isolated strains of aerobically grown gelatinolytic bacteria were Gram-negative rod-shaped or Gram-positive endospore-forming rod-shaped cells.
- University of Zagreb Croatia
Gram-Positive Endospore-Forming Rods, Bacteria, Croatia, Water Pollution, Colony Count, Microbial, Fresh Water, water quality, gelatinolytic bacteria; heterotrophic bacteria; water quality, Gram-Negative Aerobic Rods and Cocci, Gelatin, gelatinolytic bacteria, Water Microbiology, heterotrophic bacteria
Gram-Positive Endospore-Forming Rods, Bacteria, Croatia, Water Pollution, Colony Count, Microbial, Fresh Water, water quality, gelatinolytic bacteria; heterotrophic bacteria; water quality, Gram-Negative Aerobic Rods and Cocci, Gelatin, gelatinolytic bacteria, Water Microbiology, heterotrophic bacteria
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