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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.26 no.5, 2020년, pp.493 - 505
민준오 (한양대학교 해양융합공학과) , 이창화 (부산대학교 해양학과) , 윤석현 (국립수산과학원)
Food web structures in the lower trophic levels of the seas around the Korean peninsula were investigated in August 2019 using stable isotopes. There were variable ratios of the carbon (-26.18 ~ -20.61 ‰) and nitrogen stable (5.36 ~ 15.20 ‰) isotopes in the particulate organic matter (...
핵심어 | 질문 | 논문에서 추출한 답변 |
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먹이망이란? | 먹이망(food web)은 기초생산자(primary producer)에 의해 합성된 에너지가 상위 영양단계(high trophic level)로 전달되는 과정을 의미하며 해양생태계(marine ecosystem)를 구성하는 기본 기능이다(Krumins et al., 2013; Schückel et al. | |
Copepods의 역할은? | Copepods는 해양 동물플랑크톤 주요 구성요소이며 탄소순환과 동물 플랑크톤 군집 역학에 중요한 역할을 한다 (Mauchline 1998). 또한 pico-, micro size의 플랑크톤에 대한 크기별 선택적 섭식은 영양연쇄효과를 통해 낮은 영양 수준에서 개체군의 생물량 및 먹이 구조에 영향을 줄 수 있다 (Vargas et al. | |
우리나라 해역의 해양생태계를 보존하고 잠재적 어업 생산력을 유지하기 위해서 먹이망 구조의 변화 및 각 해역별 먹이원 특성을 이해하는 것은 중요한 이유는? | 최근 기후변화가 가속화됨에 따라 해양생태계 시스템이 변화되고 있으며 특히 해양의 수온 변화는 어획 대상종의 구성 변화, 어군의 서식지 이동, 어류의 성장률 등 어업생산에 있어 중요한 영향을 미치고 있음이 보고되고 있다(Lu and Lee, 2014). 이러한 변화는 일차 생산력의 분포와 속도에 변화를 주어 일차생산자로부터 먹이망을 통해 상위 소비자에게 연결되는 과정에 변화를 야기할 수 있으며(Kang et al., 2012), 해양생태계의 물질순환 및 어획량 감소에 영향을 미칠 수 있다(Eom et al., 2015). 따라서 우리나라 해역의 해양생태계를 보존하고 잠재적 어업 생산력을 유지하기 위해서는 먹이망 구조의 변화 및 각 해역별 먹이원 특성을 이해하는 것은 중요하다. |
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