We documented permanent presence of heterotrophic filaments in three acidified lakes (pH<5) in the Bohemian Forest. Due to acidification, crustacean zooplankton were absent in all but one lake. In terms of carbon flow, microorganisms were thus almost exclusive players in the pelagic food webs. Varie
Seasonal Occurrence of Several Groups of Heterotrophic Bacteria in Two Reservoirs
✍ Scribed by Dr. Vêra Straškrabová
- Publisher
- John Wiley and Sons
- Year
- 1974
- Tongue
- English
- Weight
- 517 KB
- Volume
- 59
- Category
- Article
- ISSN
- 1434-2944
No coin nor oath required. For personal study only.
✦ Synopsis
Abstract
75% of the isolated strains were Gram negative, asporogenous bacteria. Almost a half of them fermented glucose, which was probably caused by a selectivity of the agar medium for the particular types. The groups tentatively classified as Enterobacteriaceae and Aeromonas, prevailed during summer, whereas pseudomonads and Acinetobacter were more common in winter.
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## Abstract Population densities and generation time of heterotrophic bacteria were estimated in water and sediments of fish ponds used for polyculture, monoculture and traditional systems of fish farming over a period of two and a half years. Spatial differences in microbial densities in the ponds