Spatial Distribution Characteristics of Stable Carbon and Nitrogen Isotope in Macrobenthos in the Gonghu Bay
ZHANG Leiyan
AN Hao
GUAN Baohua
CHENG Hanfei
ZHAN Maohua
Abstract：The food source and trophic structure of Corbicula and Bellamya,the macrobenthos,in the Gonghu Bay of Lake Taihu were studied,and the spatial distribution characteristics of the stable carbon and nitrogen isotope in the macrobenthos were analyzed as well using the stable isotope techniques.The results showed that the values of δ15 N in both Corbicula and Bellamya varied in similar trend,and increased gradually when being farther from the inlet of the riverlet into the Bay,which could thus trace the pollution sources and indicated Corbicula and Bellamya at the similar trophic level.The results also illuminated that Corbicula and Bellamya were in the same trophic level with the difference of their δ15 N ranging 1.5‰～2.8‰.
Keywords：macrobenthoscarbon isotopenitrogen isotopeLake Taihueutrophication
Publication Date：2017-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：5( 67-71 )