The Influence of pH Characteristics on the Occurance of Coliform Bacteria in Madura Strait

One of the most common type of bacteria found in the ocean is a gram-negative bacteria, including Coliform bacteria. These bacteriahave been regularly observed in the waters surrounding the island of Madura. The degree of acidity (pH) is one of the important factors in the growth of bacteria. This research aimed to know the pH characteristics and its effects onthe occurrence of gram-negative bacteria at Madura Strait. The result shows pH distribution patterns in the study site were 6.9-8.3 (2012) and 6.3-8 (2013), and survival of bacterial in acidic environment was 7.5% and in alkaline-environment was66.11%, respectively.