Sustainability Evaluation for Shellfish Production in Gamak Bay Based on the Systems Ecology 1. EMERGY Evaluation for Shellfish Production in Gamak Bay

시스템 생태학적 접근법에 의한 가막만 패류생산의 지속성 평가 1. 가막만 패류양식의 에머지 평가

  • Published : 2008.08.30


This research outlines a new method for evaluation of shellfish production in Gamak Bay based on the concept of EMERGY. Better understanding of those environmental factors influencing oyster production and the management of oyster stocks requires the ability to assess the real value of environmental sources such as solar energy, river, tide, wave, wind, and other physical mechanisms. In this research, EMERGY flows from environment sources were 76% for shellfish aquaculture in Gamak Bay. EMERGY yield ratio, Environmental Loading Ratio, and Sustainability Index were 4.26, 0.31 and 13.89, respectively. Using the Emergy evaluation data, the predicted maximum shellfish aquaculture production in Gamak Bay and the FDA (Food and Drug Administration, U.S.) designated area in Gamak Bay were 10,845 ton/y and 7,548 ton/yr, respectively. Since the predicted shellfish production was approximately 1.3 times more than produced shellfish production in 2005, the carrying capacity of Gamak Bay is estimated to be 1.3 times more than the present oyster production.


EMERGY;Gamak Bay;FDA designated area;Oyster production


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