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open access
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ISSN : 1225-3480
The influences of inland pollution sources on shellfish production area of Yeoja bay were investigated. According to survey results, I-4 of inland pollution sources had high fecal contamination level and exceeded 6km of radius of influence during the survey period. Other pollutants have low flow rates, but fecal contamination levels were high and require management. And from January 2018 to June 2020, the range of Fecal coliform, geometric mean and 90th percentile for 21 seawaters were < 1.8-79.0 MPN/100mL, < 1.8-2.7 and < 1.8-9.1 MPN/100mL respectively. Also the range of Fecal coliform, E. coli and viable cell counts for 4 ark shell (Scapharca subcrenata) were < 18-490, < 18-490 MPN/100g and 30-4,500 CFU/100g respectively. As the results of the bacteriological evaluation, the sanitary state of Yeoja bay is level of designated area according to Korea criteria and conditionally approved area according to US criteria and Class A area according to EU criteria. For safe shellfish production in Yeoja bay, a semi-enclosed bay, it is necessary to expand the sewage treatment plant facilities and manage the pollutant.
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