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NTIS 바로가기생태와 환경 = Korean journal of ecology and environment, v.49 no.2, 2016년, pp.80 - 88
강수진 (한양대학교 해양융합과학과) , 최보형 (한양대학교 해양융합과학과) , 한용진 (한양대학교 해양융합과학과) , 신경훈 (한양대학교 해양융합과학과)
In order to reconstruct a benthic foodweb structure and assess the role of benthic microalgaes as a diet source for benthos, we analyzed the carbon and nitrogen stable isotopes of diverse benthos (bivalves, crustaceans, gastropods and fishes) and potential diets (particulate organic matter, sediment...
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핵심어 | 질문 | 논문에서 추출한 답변 |
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해양 생태계에서 먹이망 구조를 파악하고 생물의 먹이원을 추적하기 위한 연구방법 중, 내용물 분석법의 단점은? | 해양 생태계에서 먹이망 구조를 파악하고 생물의 먹이원을 추적하기 위한 연구방법은 위 내용물 분석법 (Hyslope, 1980)이 전통적으로 활용되어 왔다. 그러나 위 내용물 분석법은 소비자가 먹은 먹이의 크기가 작거나, 소화가 진행되어 형체가 남아 있지 않을 경우 그 내용물을 분석하기가 어렵고, 소비자의 체내에 실제 동화되는 유기물의 정보를 알 수 없다는 단점이 있다 (Jones and Waldron, 2003). 최근의 연구에서는 탄소, 질소 안정동위원소비 분석을 활용한 먹이망 구조 연구가 실시되고 있다 (Peterson and Fry, 1987; Grall et al. | |
조간대 갯벌은 어떤 중요성을 갖는가? | 조간대 갯벌은 육지와 해양이 접하는 해안습지로 수산물의 중요한 생산지일 뿐만 아니라, 정화작용, 홍수조절, 야생생물의 보존, 산란과 생육장소로써 그 가치가 매우 큰 것으로 알려져 있어 생태학적으로 중요한 환경으로 알려져 있다 (Je et al., 1998). 특히, 일반적인 해양 생태계에서는 기초생산자인 식물플랑크톤으로부터 에너지 흐름이 시작되는 것에 비하여, 조간대 갯벌과 같이 해수의 유동이 큰 서식 환경에서는 부유성 식물플랑크톤 외에 저서미세조류, 부착 미세조류, 그리고 대형조류와 해초 등과 같은 다양한 형태의 기초생산자가 존재하기 때문에 더욱 복잡한 먹이망 구조를 형성할 수 있다 (Kang et al., 2009). | |
먹이망 구조 연구에 활용되는 탄소, 질소 안정동위원소비 분석의 특징은? | , 2009). 안정동위원소는 그 분별작용을 통해 각 생물지구화학적 과정과 물질 기원에 대한 정보를 알 수 있으며 (Peterson and Fry, 1987), 탄소안정동위원소의 경우 먹이원과 섭식자 간에 안정동위원소 분별작용이 작기 때문에 이를 통해 소비자의 먹이기원을 파악할 수 있으며, 질소안정동위원소의 경우 먹이원과 섭식자 간에 일정한 값 (평균 3.4‰)의 안정동위원소 분별계수가 나타나기 때문에, 소비자의 영양단계를 파악하는 데 활용되고 있다 (Deniro et al., 1981; Peterson and Fry, 1987; Peterson, 1999). |
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