CHARACTERIZATION OF THE SHIP’S BALLAST WATER AND ITS ATTRIBUTE TO THE MARINE ENVIRONMENT IN THE PORTS OF ANCHORAGE
Ballast water is a carrier of pollutants into the marine environment, which poses public health risks, economic loss to fishing industries, alteration of biodiversity, and ecosystems. Analysis includes physico-chemical, microbiological, and heavy metal contents from local vessels within Cebu province's seaports. Water samples were collected from February to April 2016 for laboratory analyses such as Ammonia, Nitrate, and Nitrite, BOD and DO, TDS and TSS, pH, Organic-N. Heavy metal analyses include Lead, Mercury, and Zinc. Microbiological tests include Total and Fecal Coliform using the MPN method. Results showed that ballast water from the cities was high in ammonia, nitrate, dissolved oxygen, and total dissolved solids. Results of heavy metal content (Pb, Hg, and Zn (mg/L) exceeded the Dubai standard, which is only 0.005, 0.001, and 0.02 mg/L, respectively. Result of microbiological tests shows that LV3 and LV5 had high fecal coliform concentration which did not pass the standard requirement. While other local vessels such as LV1, LV2, and LV4 with 11 MPN per 100mL, qualified the Dubai Standard. In terms of phytoplankton, Chaetoceros sp. has the highest total density with 57 cells/mL, followed by Oscillatoria sp. and Nitzschia sp. with 29 and 21cells/mL, respectively. Among the zooplankton, Calanus sp., had the highest total thickness of 24 ind./L followed by a fish egg with a total density of 12 indv. Based on the phytoplankton density of the ballast water, the marine environment is a nutrient poor area. Zooplankton population in the area is relatively low, which is safe from red tide causing dinoflagellates and marine invasive species.