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Lakes vary significantly in depth, temperature, salinity, and organic content, leading to diverse ecological conditions. A notable characteristic often overlooked is the low amount of dissolved organic matter in these waters. Early studies indicated that aquatic microorganisms can thrive on media with minimal assimilable substances, yet most research has focused on higher concentrations of glucose or peptone. Consequently, many microorganisms have been overlooked. By utilizing low-nutrient organic media enriched with essential growth factors, researchers have revealed that many microorganisms, which do not grow on standard media, are abundant in natural waters and play a crucial role in organic matter cycling. Detailed investigations into specific groups of microorganisms, such as budding and stalked bacteria, gliding bacteria, and saprophytic mycoplasmas, have advanced our understanding, especially regarding photosynthetic bacteria and iron and manganese bacteria, which are often found in narrow ecological niches. The application of electron microscopy has further enhanced our knowledge of the morphology of aquatic bacteria, including those that do not thrive on conventional media. This work presents previously underexplored organisms, incorporating corrections and additions to existing classifications based on new observations. Our research spans lakes with varying trophic levels, hydrological, and temperature conditions, fo
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The ecology of - aquatic micro-organisms, Vladimir M. Gorlenko
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- Année de publication
- 1983
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