Skip to main page content
U.S. flag

An official website of the United States government

Dot gov

The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you’re on a federal government site.

Https

The site is secure.
The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.

Access keys NCBI Homepage MyNCBI Homepage Main Content Main Navigation
. 2023 Oct 31;57(43):16585-16594.
doi: 10.1021/acs.est.3c05844. Epub 2023 Oct 16.

Trophic Transfer of Halogenated Organic Pollutants in a Wetland Food Web: Insights from Compound-Specific Nitrogen Isotope of Amino Acids and Food Source Analysis

Yi-Ye Jiang  1   2 , Yan-Hong Zeng  1   3   4 , Rui-Feng Lu  1   2 , Ke-Lan Guan  1   2 , Xue-Meng Qi  1   2 , Qunjie Feng  1   2 , Ling Long  1   2 , Yan-Ting Zhang  1   2 , Xiaobo Zheng  5 , Xiao-Jun Luo  1   3   4 , Bi-Xian Mai  1   3   4
Affiliations

Trophic Transfer of Halogenated Organic Pollutants in a Wetland Food Web: Insights from Compound-Specific Nitrogen Isotope of Amino Acids and Food Source Analysis

Yi-Ye Jiang et al. Environ Sci Technol. .

Abstract

A trophic position (TP) model (TPmix model) that simultaneously considered trophic discrimination factor and βGlu/Phe variations was developed in this study and was first applied to investigate the trophic transfer of halogenated organic pollutants (HOPs) in wetland food webs. The TPmix model characterized the structure of the wetland food web more accurately and significantly improved the reliability of TMF compared to the TPbulk, TPAAs, and TPsimmr models, which were calculated based on the methods of stable nitrogen isotope analysis of bulk, traditional AAs-N-CSIA, and weighted βGlu/Phe, respectively. Food source analysis revealed three interlocking food webs (kingfisher, crab, and frogs) in this wetland. The highest HOP biomagnification capacities (TMFmix) were found in the kingfisher food web (0.24-82.0), followed by the frog (0.08-34.0) and crab (0.56-11.7) food webs. The parabolic trends of TMFmix across combinations of log KOW in the frog food web were distinct from those of aquatic food webs (kingfisher and crab), which may be related to differences in food web composition and HOP bioaccumulation behaviors between aquatic and terrestrial organisms. This study provides a new tool to accurately study the trophic transfer of contaminants in wetlands and terrestrial food webs with diverse species and complex feeding relationships.

Keywords: Bioaccumulation; Biomagnification; Fatty Acid; Halogenated Organic Pollutants; Stable Isotope Composition; Wetland Food Web.

PubMed Disclaimer

Similar articles

See all similar articles

Publication types

LinkOut - more resources