Little egrets (Egretta garzetta) and trace-metal contamination in wetlands of China
文献类型：期刊论文
| 作者 | Zhang, Y.; Ruan, L.; Fasola, M.; Boncompagni, E.; Dong, Y.; Dai, N.; Gandini, C.; Orvini, E.; Ruiz, Xavier |
| 刊名 | ENVIRONMENTAL MONITORING AND ASSESSMENT
 |
| 出版日期 | 2006-07-01 |
| 卷号 | 118期号:1-3页码:355-368 |
| 关键词 | bioaccumulation China contamination Egretta garzetta trace-elements waterbirds |
| ISSN号 | 0167-6369 |
| DOI | 10.1007/s10661-006-1496-4 |
| 通讯作者 | Fasola, M.(fasola@unipv.it) |
| 英文摘要 | The rapidly developing Asian countries may face threatening environmental contamination, that however remains largely unassessed. We studied persistent trace elements in three wetlands, Poyang Lake, relatively unpolluted, and Tai Lake, and Pearl River Delta, selected as hotspots of pollution in Central China. We adopted as indicator the Little Egret, a widespread colonial waterbird, and during 1999 and 2000 we collected and analysed the same samples as for a parallel study we conducted in Pakistan, e.g. eggs, body feathers of chicks, prey spontaneously regurgitated by the chicks, and sediments at the areas most used by foraging egrets. The levels of trace-metals at our three study areas were similar, or within the range, of those found in the few other studies for East Asia, with few exceptions. The concentrations of the various elements were below the threshold that may affect the survival or reproduction of the birds, and even the highest concentrations relative to background, i.e. Se in eggs, and Hg in feathers at Pearl Delta, do not pose toxic hazards. In sediments, the levels of trace elements were lower than the critical levels assumed for contaminated soil, except for alarming high levels of As at Poyang. These results do not confirm our expectation, that Poyang was relatively uncontaminated, while Tai and Pearl were polluted. Although trace metal concentration differed significantly among the three study areas, these differences were minor and were not consistent among elements and samples. The bioaccumulation ratios from sediments through prey, feather and egg, were consistent with our previous findings for Pakistan. Only Hg exhibited high bioaccumulation, while Se and Zn had low accumulation, and the other elements no accumulation. This reasserts that feathers of predators such as egrets, may be more sensitive indicators of environmental contamination for the elements subject to bioaccumulation, whereas the sediments or the organisms low in the food chain are better indicators for the other elements. |
| 收录类别 | SCI |
| WOS关键词 | PIGEONS COLUMBA-LIVIA ; HONG-KONG ; CADMIUM EXPOSURE ; SELENIUM LEVELS ; POLLUTED AREA ; HEAVY-METAL ; FEATHERS ; EGGS ; LEAD ; MERCURY |
| WOS研究方向 | Environmental Sciences & Ecology |
| WOS类目 | Environmental Sciences |
| 语种 | 英语 |
| WOS记录号 | WOS:000241130500022 |
| 出版者 | SPRINGER |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2558565 |
| 专题 | 南京土壤研究所 |
| 通讯作者 | Fasola, M. |
| 作者单位 | 1.Univ Pavia, Dipartimento Biol Anim, I-27100 Pavia, Italy 2.Lanzhou Univ, Sch Life Sci, Lanzhou 730000, Peoples R China 3.Chinese Acad Sci, Inst Soil Sci, Nanjing 210008, Peoples R China 4.Jiangxi Acad Sci, Nanchang 330029, Jiangxi, Peoples R China 5.Univ Pavia, Dipartimento Chim Farmaceut, I-27100 Pavia, Italy 6.Univ Pavia, Dipartimento Chim Gen, I-27100 Pavia, Italy 7.Univ Barcelona, Dept Biol Anim, E-08028 Barcelona, Spain |
| 推荐引用方式 GB/T 7714 | Zhang, Y.,Ruan, L.,Fasola, M.,et al. Little egrets (Egretta garzetta) and trace-metal contamination in wetlands of China[J]. ENVIRONMENTAL MONITORING AND ASSESSMENT,2006,118(1-3):355-368. |
| APA | Zhang, Y..,Ruan, L..,Fasola, M..,Boncompagni, E..,Dong, Y..,...&Ruiz, Xavier.(2006).Little egrets (Egretta garzetta) and trace-metal contamination in wetlands of China.ENVIRONMENTAL MONITORING AND ASSESSMENT,118(1-3),355-368. |
| MLA | Zhang, Y.,et al."Little egrets (Egretta garzetta) and trace-metal contamination in wetlands of China".ENVIRONMENTAL MONITORING AND ASSESSMENT 118.1-3(2006):355-368. |
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来源：南京土壤研究所
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