AQUATIC MICROFLORA OF THE JIU RIVER, IȘALNIȚA-ZĂVAL SECTOR

Rezumat

This paper presents the ecological status of the designated water bodies on the Jiu River in the downstream sector of the Ișalnița reservoir - upstream of the Danube River confluence (Ișalnița-Zăval sector), taking into account the biological quality indicator for surface waters - phytoplankton, an essential component of the aquatic microflora of the Jiu River. The paper presents the characteristics of the river from a biological and physico-chemical point of view, respectively the water quality in three important sections of the Jiu-Danube Hydrographic Area: the first one marking the upper limit of the Lower Basin of the Jiu River (the Jiu to Podari section), the second one Jiu to Malu-Mare and the third one marking the closure of the Jiu River reception basin with the balance of chemical compound loads, upstream of the confluence with the Danube River (the Jiu to Zăval section). The paper also presents other aspects related to the anthropogenic impact on water bodies but also to the self-purification capacity of the Jiu River, a process generated by aquatic organisms in general and phytoplankton in particular.