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RESEARCH ABOUT SEASONAL DYNAMICS OF HETEROTROPHIC BACTERIA FROM THE SIRET RIVER


DUMITRA RăDUCANU 1, OCTAVIĆŁA AILIESEI 2
1. „Vasile Alecsandri” University of Bacau, Faculty of Science, Department of Biology, Marasesti Street, no. 157, Bacau, Romania e-mail: dumitra_manea@yahoo.com
2. The “Alexandru Ioan Cuza” University, Bulevardul Carol I, Nr.11, 700506, Iasi, Romania

Issue:

SCSB, Number 2, Volume XX

Section:

Volume 20, No.2 - Animal Biology

Abstract:

With a length of 596 km in the country,

Siret River is one of the most important river in

the N -E of Romania. In the 5 km downstream

from the Bacau city, the Siret River collects

Bistrita River water. In this paper, were

determined quantitatively several groups of

bacteria with implications in the carbon cycle,

nitrogen cycle, sulfur cycle and

aerobic/anaerobic heterotrophic bacteria in 2009.

The water and sediment samples were

collected upstream and downstream of the Bacau

city from:downstream Basta village, Dragesti, the

Siret River near Bacau /CIC area, the Siret River

after the confluence with the Bistrita River and

upstream of the Racaciuni lake.

From the analysis performed was observed a

seasonal evolution for all groups of bacteria

analyzed with a maximum development in the

warm season.

Keywords:

ecophysiological groups of bacteria, quantitative determination, Siret River.

Code [ID]:

SCSB20112002V20S01A0018 [0003735]

DOI: