Terrestrial mercury and methylmercury bioaccumulation and trophic transfer in subtropical urban forest food webs
文献类型:期刊论文
作者 | Fudong Zhang; Zhidong Xu; Xiaohang Xu; Longchao Liang; Zhuo Chen; Xian Dong; Kang Luo; Faustino Dinis; Guangle Qiu |
刊名 | Chemosphere |
出版日期 | 2022 |
卷号 | 299页码:134424 |
关键词 | Terrestrial Mercury And methylMercury biomagnification stable Isotopes urban Forest 's Food Webs |
DOI | 10.1016/j.chemosphere.2022.134424 |
英文摘要 | As the "lungs of the city ", urban forests can improve air quality by absorbing air pollutants, becoming hotspots for mercury (Hg) pollution from anthropogenic activities. However, the bioaccumulation and transfer of Hg in the urban forest food web are unclear. In this study, total mercury (THg) and methylmercury (MeHg) concentrations, as well as the stable isotopes of carbon (delta C-13) and nitrogen (delta N-15) in organisms with different trophic levels (TLs) were investigated in a mid-subtropical urban forest of the Changpoling Forest Park (CFP) in Guiyang City, Guizhou Province, southwestern China. The results showed that THg and MeHg among all taxa ranged from 5.6 to 1267 ng g(-1) and 0.046-692 ng g(-1), respectively. MeHg% (% of Hg present as MeHg) at different TLs exhibited a wide range of 5.0-69% on average. Both THg and MeHg increased with the TLs from plants to nestling birds, indicating distinct biomagnification through the food web of grasses/pine needles -grasshoppers/ caterpillars/katydids/mantis -spiders/songbird nestlings. The trophic magnification slope (TMS) of THg and MeHg were 0.18 +/- 0.05 and 0.37 +/- 0.08, respectively, suggesting both of them significantly increase along food webs. These findings improve the understanding of biogeochemical Hg cycles in terrestrial food webs and highlight the impacts of terrestrial MeHg on nestling birds. |
URL标识 | 查看原文 |
语种 | 英语 |
源URL | [http://ir.gyig.ac.cn/handle/42920512-1/13453] |
专题 | 地球化学研究所_环境地球化学国家重点实验室 |
作者单位 | 1.Guizhou Normal Univ, Sch Chem & Mat Sci, Guiyang 550001, Peoples R China 2.Chinese Acad Sci, Inst Geochem, State Key Lab Environm Geochem, Guiyang 550081, Peoples R China 3.Guizhou Univ, Coll Resources & Environm Engn, Key Lab Karst Georesources & Environm, Minist Educ, Guiyang 550025, Peoples R China 4.Chinese Acad Sci, Ailaoshan Stn Subtrop Forest Ecosyst Studies, Jingdong 676200, Peoples R China 5.Guizhou Univ, Coll Agr, Guiyang 550025, Peoples R China |
推荐引用方式 GB/T 7714 | Fudong Zhang,Zhidong Xu,Xiaohang Xu,et al. Terrestrial mercury and methylmercury bioaccumulation and trophic transfer in subtropical urban forest food webs[J]. Chemosphere,2022,299:134424. |
APA | Fudong Zhang.,Zhidong Xu.,Xiaohang Xu.,Longchao Liang.,Zhuo Chen.,...&Guangle Qiu.(2022).Terrestrial mercury and methylmercury bioaccumulation and trophic transfer in subtropical urban forest food webs.Chemosphere,299,134424. |
MLA | Fudong Zhang,et al."Terrestrial mercury and methylmercury bioaccumulation and trophic transfer in subtropical urban forest food webs".Chemosphere 299(2022):134424. |
入库方式: OAI收割
来源:地球化学研究所
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