You are here: Home » Past Issues » Volume 5, 2010 - Number 2 » THE QUANTITATIVE VARIATION OF SOME ECOPHYSIOLOGICAL GROUP OF BACTERIA FROM ARIEŞ RIVER SEDIMENTS AFFECTED BY POLLUTION
Andreea BODOCZI1 & Rahela CARPA1
1Babeş-Bolyai University, Faculty of Biology and Geology, Experimental Biology Department, 1 Kogălniceanu Street, 400084/Cluj-Napoca, Romania, E-mail: firstname.lastname@example.org
THE QUANTITATIVE VARIATION OF SOME ECOPHYSIOLOGICAL GROUP OF BACTERIA FROM ARIEŞ RIVER SEDIMENTS AFFECTED BY POLLUTION
Ten sediment samples from Arieş river sediments were studied microbiologically during the four seasons of the year 2008. The following four ecophysiological bacterial groups have been studied: aerobic mesophilic heterotrophs, ammonifiers, nitrifiers and denitrifiers. The presence of all the four ecophysiological bacterial groups was registered in all the studied sediments. The studied bacterial groups present fluctuations according with the sampling season and the sampling points. The descending ranking of their abundance in the sampled sediments was: aerobic mesophilic heterotrophs, ammonifiers, denitrifiers, nitrifiers. Based on the bacteria number of the each ecophysiological group, the bacterial indicators of sediment quality (BIQS) were calculated and we observed its seasonal variations.
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