Nitrifying Bacterial Activity In South Eastern Black Sea (Coast of Sürmene)

In this, some physico-chemical properties of seawater and their relationships with nitrification process were studied. Monthly water samples were taken at 9 stations (400 11' 19"-400 15' 47" E, 400 55' 26", 400 58' 00" N) along Surmene coastline of South Eastern Black Sea during the period of December 1992 to August 1994. Temperature, dissolved oxygen, NO3 - -N, NO2 - -N and PO4 -3 -P values were varied between 6.5-25.90C, 6.9-9.1 mg/l, 0.378-0.5 mg/l, 0.023-0.047 mg/l, 0.0055-0.0455 mg/l respectively. Most probable number of Nitrosococcus and Nitrobacter were 12-32 cell/100 ml and 12-29 cell/100 ml. There were significant relationships between number of Nitrosococcus and NO 3 - -N, NO 2 - -N, PO 4-3 -P values. Nutrient concentrations (NO 3 - -N, NO 2 - -N, PO4-3 -P) and niftrification process suggest that the study area appears to be quite productive.