Characteristic of Hg accumulation by zooplankton in plateau eutrophic reservoir
LONG Sheng-xing1,2, HE Tian-rong1, CHEN Chuan3, XIA Pin-hua3, ZENG Ling-xia1, DONG Xian3, LIU Zhi-wie2
1. Key Laboratory of Karst Environment and Geohazard Prevention, Ministry of Education, Guizhou University, Guiyang 550003, China;
2. College of Science and Technology, Jinan University, Guangzhou 510000, China;
3. Guizhou Normal University, Guiyang 550001, China
Larger zooplankton were collected from Baihua Lake reservoir, Hongfeng Lake reservoir, Aha reservoir and Caohai wetland, Hg and MeHg of Zooplankton and water quality parameter were determined in order to understand characteristic of Hg and MeHg accumulation by zooplankton in plateau eutrophic reservoir. Our study showed THg and MeHg concentration in zooplankton changed from 58.91 to 345.85ng/g dry weight and 7.18 to 112.20ng/g dry weight, positively correlation THg concentration in zooplankton with eutrophic status (p<0.05), because of TP was importance factor limited water eutrophic in plateau deep water reservoir, and indirect impacted THg accumulation by zooplankton. Vegetation composewas importance factor to effect Hg accumulationin zooplankton, and leaded to Hg in zooplankton obvious different distribution in wetland, because of Vegetation community retard move of Hg contaminant significant different. Hg in zooplankton was significant different in different season, and MeHg in zooplankton increased with zooplankton's individual length and biomass increased.
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