Evaluation of the physical-chemical quality state of the Danube Delta aquatic ecosystem during the period 2003-2004

The main objective of this paper is to provide data on the Danube Delta aquatic ecosystem quality, based on the long-term analytical investigation of specific indicators, the physical-chemical properties of water and sediment samples collected from Uzlina and Murighiol locations in the period April-October, during two consecutive years (2003 and 2004). The comparative analysis of the quality characteristics of the Danube Delta aquatic ecosystem in these two years emphasized the dynamic character of the water quality possibly determining an evolution into the unfavorable stages, which lead to worsen life conditions for aquatic organisms.