Abstract
<p><em>The objective of this research is to analyze the water quality of the south coastal area of Bunaken Island with the existence of bacterial polluter at the time of high tide of the surface of the sea, to identify the content of bacterial polluter, and to analyze the influence of abiotic environment (temperature, salinity, pH and dissolved oxygen) on the growth of bacterial polluter. This research has been conducted in the southern part of the coastal area of Bunaken Island at 6 stations: 1) Tanjung Pasir, 2) the water in front of Kampung Negeri, 3) Likuan, 4) Liang, 5) Tawara, and 6) in front of Alang Banua.</em></p><p><em>Samples were taken using the purposive sampling method. In analyzing the water sample to know the content of the bacterial polluter it has used the Most Probable Number (MPN) method with the presumption test by using the media of Lactose Broth (LB) and the confirmed test by using the Brilliant Green Lactose Broth (BGLB), whereas in testing the biochemical bacterial it has used the media of Mac Conkey agar. The biochemical test has used the Triple Sugar Iron (TSI) agar, Sulfide Indol Motile (SIM), Simmons’s Citrate, Urease, and Lysine Iron Agar (LIA). </em></p><p><em>The result shows that at the time of high tide the coliform of bacteria and the Escherichia coli are highest at station 6,i.e. MPN/100 ml whereas in low tide the Escherichia coli bacteria is highest at station 4,i.e 1100 MPN/100 ml and Escherichia coli is the highest at station 6,i.e. 460 MPN/100 ml. Based on the biochemical test at the south coastal area of Bunaken Island, the following have been founded out: Escherichia coli, Klebsiella rhinoscleromatis, Proteus inconstans and Enterobacter aerogenes. The result shows that the sea water at the surrounding of Bunaken Island has been contaminated by the normal intestinal tract of human beings and animals. The existence of coliform bacteria and Escherichia coli in the waters is a sign of warning that the water is potential for disease dangerous for human health.</em></p><p><em>The tested abiotic environmental parameters vary; the temperature is between 26-30<sup>o</sup>C, salinity is between 34-35%, pH is between 7.8-8.9, and the dissolved oxygen (DO) is between 2.7-7 ppm. The parameters indicate the support of the growth of bacterial polluter.</em></p>
Published Version
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