김도균 (한양대학교)

한빛사 논문

조회211

한양대학교

Water Res., Volume 245, 15 October 2023, 120591 | https://doi.org/10.1016/j.watres.2023.120591 New insight into biomagnification factor of mercury based on food web structure using stable isotopes of amino acids.

Dokyun Kim ^a, Eun-Ji Won ^a,b, Ha-Eun Cho ^a, Jonghyun Lee ^c, Kyung-Hoon Shin^a

^aDepartment of Marine Sciences and Convergent Technology, Hanyang University, Ansan 15588, Republic of Korea

^bInstitute of Ocean and Atmospheric Sciences, Hanyang University, Ansan 15588, Republic of Korea

^cEH R&C Co., LTD., Seoul, Republic of Korea

Corresponding author : Kyung-Hoon Shin

Abstract

Although many attempts have been carried out to elaborate trophic magnification factor (TMF) and biomagnification factor (BMF), such as normalizing the concentration of pollutants and averaging diet sources, the uncertainty of the indexes still need to be improved to assess the bioaccumulation of pollutants. This study first suggests an improved BMF (i.e., BMF') applied to mercury bioaccumulation in freshwater fish from four sites before and after rainfall. The diet source and TP of each fish were identified using nitrogen stable isotope of amino acids (δ ¹⁵N _AAs) combined with bulk carbon stable isotope (δ ¹³C). The BMF' was calculated normalizing with TP and diet contributions derived from MixSIAR. The BMF' values (1.3-27.2 and 1.2-27.8), which are representative of the entire food web, were generally higher than TMF (1.5-13.9 and 1.5-14.5) for both total mercury and methyl mercury, respectively. The BMF' implying actual mercury transfer pathway is more reliable index than relatively underestimated TMF for risk assessment. The ecological approach for BMF calculations provides novel insight into the behavior and trophic transfer of pollutants like mercury.

논문정보

형식Research article
게재일2023년 10월 (BRIC 등록일 2023-09-25)
연구진국내 연구진
분야 생명과학 > 분류/생태/환경생물학

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