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NTIS 바로가기海洋環境安全學會誌 = Journal of the Korean society of marine environment & safety, v.23 no.6, 2017년, pp.684 - 689
문수연 (부경대학교 해양학과) , 오석진 (부경대학교 해양학과)
We examined the possibility of developing an early monitoring system using the shell valve movement activity of Pacific oyster (Crassostrea gigas) for early detection of low salinity water in coastal areas. At salinity levels of 30 psu and 20 psu, SVMs were detected 주제어
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핵심어 | 질문 | 논문에서 추출한 답변 |
---|---|---|
염분이란? | 염분은 수온과 더불어 해양생물의 에너지대사, 여과율을 포함한 생리활동 그리고 생물의 지리적 분포에 대한 영향을 주는 중요한 환경인자로 알려져 있다(Davenport et al., 1975; Navarro et al. | |
갑작스런 염분변화가 끼칠 수 있는 해악은? | , 2004; Lee and Shin, 2015). 갑작스런 염분변화는 물질대사와 삼투조절 등 해양생물에 영향을 미치며, 장기간 저염수에 노출되었을 때는 치사에 이르게 된다(Bennett, 1985; Harris and Ulmestrand, 2004). 이매패류도 저염수에 노출 시 빠른 패각운동(Shell valve movement) 또는 두패각을 폐각하는 행동을 보이며, 섭이 활동의 감소와 낮은 성장률로(Bohle, 1972; Hand and Stickle, 1977; Shumway, 1977),결국 폐사에 이르게 된다(Hammond, 1983; Matthews and Fairweather, 2004). | |
저염수에 따른 연안역 생태계의 악영향이 가중될 수 있는 배경은? | , 2012). 또한 우리나라 양식산업은 천해양식이 전체 어업생산량 약 60 %를 차지하고 있으며(MOF, 2016), 양식밀도도 높아 저염수의 출현은 양식생물에 큰 영향을 미치게 된다(Sklar and Browder, 1998; Kurata, 2000). 더욱이 우리나라 연 강수량은 하계 집중 호우에 따라 증가 추세를 보였지만, 수자원확보 측면에서는 크게 도움이 되지 않으며, 오히려 홍수 위험을 가중시켜 댐 운영을 더 어렵게 하였다(Jung et al.,2010). |
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