• 한국어업기술학회:학술대회논문집
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• 한국어업기술학회 2001년도 추계 수산관련학회 공동학술대회발표요지집
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• pp.208-209
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• 2001

이매패류는 해수 중의 유기물과 식물플랑크톤을 지속적으로 여과하여 소비하고(Carlson et al., 1984; Cohen et al., 1984; Frechette ＆ Bourget, 1985' Smaal et al., 1986; Hily, 1991), 생물 대사 활동에 의해 배설되는 입자 유기물 (biodeposit)은 퇴적물에 축적되어 (Verwey, 1952; Haven ＆ Morales-Alamo, 1972) 해수 중으로 다시 영양염을 공급하는 등 생태계 내의 영양염 및 에너지 순환에 많은 영향 (Boynton et al., 1980; Dame et al., 1980; Prince ＆ Smaal, 1990)을 미치고 있기 때문에, 생태계 구성요소들 중에서 매우 중요한 역할을 담당하고 있는 것으로 알려져 있다(Gosling, 1992; Dame, 1996). (중략)

• Ocean and Polar Research
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• 제33권4호
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• pp.435-445
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• 2011

We investigated geochemical properties, and microbial sulfate- and iron(III) reduction in sediment influenced by the aquaculture of abalone in the Nohwa-do, southern coastal sea in Korea. Concentrations of ammonium, phosphate, and sulfide in the pore-water were higher at farm sites than at control sites. The differences between the 2 types of sites were most apparent in terms of the weights of abalone and the temperature increase during September. Accordingly, the rates of sulfate reduction at the farm sites during September (61 mmol S $m^{-2}d{-1}$) were 3-fold higher than the sulfate reduction during May (20 mmol S $m^{-2}d{-1}$). In contrast, Fe(III) reduction rates were highest at the control sites in May, but its significance was relatively decreased at farm sites during September when sulfate reduction rates were highest. During September, benthic ammonium flux was 3-fold greater at the farm sites (35 mmol N $m^{-2}d{-1}$) than at the control sites (12 mmol N $m^{-2}d{-1}$), and phosphate flux was 8-fold higher at the farm sites (0.018 mmol P $m^{-2}d{-1}$) than at control sites (0.003 mmol P $m^{-2}d{-1}$). Overall results indicated that the inappropriate operation of a large-scale aquaculture farm may result in excess input of biodeposits and high nutrient fluxes from the sediment, thereby decreasing diversity of the benthic ecosystem and deepening eutrophication in coastal waters.