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- Title
BACTERIOLOGICAL STUDIES ON TIMIS AND BEGA RIVERS WITH A ROLE IN APPRECIATING POLLUTION.
- Authors
Filimon, Marioara Nicoleta; Borozan, Aurica; Sinitean, A.; Popescu, Roxana; Torok-Oance, Rodica; Verdes, Doina
- Abstract
In recent years, surface waters are becoming increasingly polluted due to anthropogenic factors such as industry, wastewater discharge and waste water, wastes and chemicals, but it`s also due to natural factors such as floods and deforestation. The purpose of this paper is to determine water and sediment quality. Ecophysiological bacteria groups are as follows: sulphat-reducing anaerobic bacteria, iron-reducing and nitrogen-fixing bacteria. Bacteriological determinations have been made using serial dilution techniques, elective environment cultures for every group: Starkey, Ottow and Ashby environments. Bacteria belonging to different ecophysiological groups (sulfate-reducing, iron-reducing, nitrogenfixing, anaerobic and aerobic) have been identified in sediment samples taken from Timis and Bega Rivers, with only one exception. Azothobacter, aerobic nitrogen-fixing bacteria is missing from every sediment sample. Sulphate-reducing bacteria, found in large numbers, in the sediment samples from Remetea and Lugojel villages, indicate hydrocarbon pollution. Iron-reducing bacteria are absent at the sampling point villages Lugojel, Step and Remetea bridge, where it creates anaerobic environment conditions. Bacterial indicator of sediment quality in Timis and Bega Rivers vary depending on each sampling point. It has values between 1,701 and 2,049 on the river Timis and 1,678 - 2,047 on Bega River.
- Subjects
WATER quality; MARINE sediment quality; BACTERIOLOGY; WATER pollution; BACTERIAL typing
- Publication
Annals of the Romanian Society for Cell Biology, 2010, Vol 15, Issue 2, p217
- ISSN
2067-3019
- Publication type
Article