Electron microscopic investigation of natural bacterial populations in the water and sediment of Lake Balaton and Lake Belső

Oláh, János and Hajdú, Lajos and Elekes, Károly (1972) Electron microscopic investigation of natural bacterial populations in the water and sediment of Lake Balaton and Lake Belső. A Magyar Tudományos Akadémia Tihanyi Biológiai Kutatóintézetének évkönyve, 39. pp. 123-129. ISSN 0365-3005

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Abstract

1. Electron microscopic examination of grids exposed in lake watershows that in Lake Balaton the microbial communities are poor in forms short rods and ovoid cells are the dominating elements- as opposed to the water of Lake Belső in which the microbial communities are composed of more diverse morphological types. An organism similar to Metallogenium was frequently encountered in the bottom water of Lake Belső. Rod-like forms were dominating in the mud of both lakes during the period of examination. 2. Three very small organisms of unusual shape, consisting of a headand a tail-part were described. On the basis of their morphology and size they are most probably Mycroplasma-liкe organisms. 3. In connection with the studies on the structure of microbial communities, the various types of population formation, the signs indicative of intensive growth and decrease of population, the various types of colony formation the relationship between seston and microorganisms were also examined.

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