Mercury flow through an Asian rice-based food web
文献类型：期刊论文
| 作者 | Abeysinghe, Kasun S.; Qiu, Guangle; Goodale, Eben; Anderson, Christopher W. N.; Bishop, Kevin; Evers, David C.; Goodale, Morgan W.; Hintelmann, Holger; Liu, Shengjie; Mammides, Christos |
| 刊名 | ENVIRONMENTAL POLLUTION
 |
| 出版日期 | 2017 |
| 卷号 | 229期号:x页码:219-228 |
| 英文摘要 | Mercury (Hg) is a globally-distributed pollutant, toxic to humans and animals. Emissions are particularly high in Asia, and the source of exposure for humans there may also be different from other regions, including rice as well as fish consumption, particularly in contaminated areas. Yet the threats Asian wildlife face in rice-based ecosystems are as yet unclear. We sought to understand how Hg flows through rice-based food webs in historic mining and non-mining regions of Guizhou, China. We measured total Hg (THg) and methylmercury (MeHg) in soil, rice, 38 animal species (27 for MeHg) spanning multiple trophic levels, and examined the relationship between stable isotopes and Hg concentrations. Our results confirm biomagnification of THg/MeHg, with a high trophic magnification slope. Invertivorous songbirds had concentrations of THg in their feathers that were 15x and 3x the concentration reported to significantly impair reproduction, at mining and non-mining sites, respectively. High concentrations in specialist rice consumers and in granivorous birds, the later as high as in piscivorous birds,, suggest rice is a primary source of exposure. Spiders had the highest THg concentrations among invertebrates and may represent a vector through which Hg is passed to vertebrates, especially songbirds. Our findings suggest there could be significant population level health effects and consequent biodiversity loss in sensitive ecosystems, like agricultural wetlands, across Asia, and invertivorous songbirds would be good subjects for further studies investigating this possibility. (C) 2017 Elsevier Ltd. All rights reserved. |
| URL标识 | 查看原文 |
| 语种 | 英语 |
| 公开日期 | 2017-09-29 |
| 源URL | [http://ir.xtbg.org.cn/handle/353005/10575]  |
| 专题 | 西双版纳热带植物园_土壤生态组 |
| 推荐引用方式 GB/T 7714 | Abeysinghe, Kasun S.,Qiu, Guangle,Goodale, Eben,et al. Mercury flow through an Asian rice-based food web[J]. ENVIRONMENTAL POLLUTION,2017,229(x):219-228. |
| APA | Abeysinghe, Kasun S..,Qiu, Guangle.,Goodale, Eben.,Anderson, Christopher W. N..,Bishop, Kevin.,...&Feng, Xinbin.(2017).Mercury flow through an Asian rice-based food web.ENVIRONMENTAL POLLUTION,229(x),219-228. |
| MLA | Abeysinghe, Kasun S.,et al."Mercury flow through an Asian rice-based food web".ENVIRONMENTAL POLLUTION 229.x(2017):219-228. |
入库方式： OAI收割
来源：西双版纳热带植物园
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