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금강 하구 생태계에서 아미노산의 질소 안정동위원소비를 이용한 섭식생물의 영양단계 파악

Title
금강 하구 생태계에서 아미노산의 질소 안정동위원소비를 이용한 섭식생물의 영양단계 파악
Other Titles
Determination of Trophic Position Using Nitrogen Isotope Ration of Individual Amino Acid in the Geum Estuary
Author
신경훈
Keywords
amino acid; compound-specific stable isotope analysis; trophic position; nitrogen stable isotope; estuary
Issue Date
2017-12
Publisher
한국하천호수학회
Citation
생태와 환경, v. 50, No. 4, Page. 432-440
Abstract
Compound specific isotope analysis of amino acids (CSIA-AAs) is being highlighted as an alternative approach for overcoming some restrictions in application of stable isotope analysis of bulk tissue (SIA) for trophic position (TP) estimation. However, this approach has rarely been applied in Korea. The present study determines TP of two Polychaeta (Nephtyidae and Glyceridae) and two fish species (Platycephalus indicus and Lophius litulon) collected from the Geum River estuary using nitrogen isotope ratio of amino acid and compared with the TP values estimated by SIA. The Polychaeta species, sampled in two sites, showed similar TP between SIA (2.7 and 3.1) and CSIA-AAs (2.6 and 3.1). However, for both fish species, TP values displayed a large difference between SIA (3.1 and 2.3) and CSIA-AAs (3.8 and 3.7). In this study TP values estimated by CSIA-AAs showed more similar to the previously reported gut content analysis of both fishes compared with the results of SIA. Current study suggests the applicability of nitrogen isotope ratio of amino acid to understand coastal ecosystem structure and trophic ecology.
URI
http://db.koreascholar.com/Article?code=341090http://repository.hanyang.ac.kr/handle/20.500.11754/103819
ISSN
2288-1123; 2288-1115
Appears in Collections:
COLLEGE OF SCIENCE AND CONVERGENCE TECHNOLOGY[E](과학기술융합대학) > MARINE SCIENCE AND CONVERGENCE ENGINEERING(해양융합공학과) > Articles
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