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Potential biodiversity threats associated with the metal pollution in the Nile-Delta ecosystem (Manzala lagoon, Egypt)

文献类型：期刊论文

作者Abdelhady, Ahmed Awad1,2; Khalil, Mahmoud M.2; Ismail, Esam2; Mohamed, Ramadan S. A.2; Ali, Ahmed2; Snousy, Moustafa Gamal3; Fan, Jiawei1; Zhang, Shengrui1; Liu Yanhong1; Xiao, Jule1,4,5
刊名ECOLOGICAL INDICATORS
出版日期2019-03-01
卷号98页码:844-853
关键词Anthropogenic impact Pollution indices Ecosystem stability Biodiversity Environmental quality
ISSN号1470-160X
DOI10.1016/j.ecolind.2018.12.002
英文摘要Metal pollution may pose a high risk to the ecosystem stability. To evaluate the impact of the metal pollution on the biodiversity, metals concentrations in sediments, water, and molluscan shells were analyzed at sixteen sites in the Manzala lagoon, which is the largest in the Nile-Delta. The samples were collected along a gradient from the main agricultural drain, which brings mixed industrial, domestic, and agricultural wastes. An exponential trend of increasing metals concentration towards the main agricultural drain was observed. For sediment and faunal samples this trend was statistically significant in most cases, however, this trend was not found for all metals in water samples except for Zn. Partial Least Square (PLS) model confirmed that the distance to the drain is a second major predictor of the observed metal concentrations after sediment grain-size, while other physicochemical parameters have minor effects. Moreover, a significant correlation was found between most metals in the fauna and their respective sediments. In contrast, neither sediment nor faunal metal concentrations did correlate with water samples. Collectively, all pollution indices (enrichment factor, contamination factor, and geo-accumulation index) indicate high pollution by Cd and Pb and moderate pollution by Zn. UPGMA clustering and non-metric Multidimensional scaling (nMDS) classified the sites in the lagoon into three main categories: 1) highly polluted southeast corner around the drain, 2) moderately polluted northeastern corner, where the newly widened and deepened sea-outlet occur, 3) unpolluted northwestern part, which located away from the drain. Multiple regression analysis showed that the distance to the pollution source, salinity, and water depth are significantly predict the faunal diversity. Furthermore, the Pollution Load index (PLI) was significantly correlated with the diversity indices. Lower diversity and dominance of opportunistic taxa in the polluted sites are interpreted to be negative consequences of the metal pollution.
WOS关键词HEAVY-METALS ; MELANOIDES-TUBERCULATA ; ESTUARINE SEDIMENTS ; SURFACE SEDIMENT ; LAKE MANZALA ; WATER ; CONTAMINATION ; MOLLUSKS ; SINAI ; FISH
资助项目CAS President's International Fellowship Initiative[2017VCC0013]
WOS研究方向Biodiversity & Conservation ; Environmental Sciences & Ecology
语种英语
WOS记录号WOS:000464891100086
出版者ELSEVIER SCIENCE BV
资助机构CAS President's International Fellowship Initiative ; CAS President's International Fellowship Initiative ; CAS President's International Fellowship Initiative ; CAS President's International Fellowship Initiative ; CAS President's International Fellowship Initiative ; CAS President's International Fellowship Initiative ; CAS President's International Fellowship Initiative ; CAS President's International Fellowship Initiative
源URL[http://ir.iggcas.ac.cn/handle/132A11/91391]  
专题地质与地球物理研究所_中国科学院新生代地质与环境重点实验室
通讯作者Abdelhady, Ahmed Awad
作者单位1.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Cenozo Geol & Environm, Beijing 100029, Peoples R China
2.Menia Univ, Fac Sci, Dept Geol, El Minia 61519, Egypt
3.Petrotrade Co, Egyptian Petr Sect, 1 Anwar Al Moftty St,Abbas El Akkad St, Cairo, Egypt
4.Chinese Acad Sci, Ctr Excellence Life & Paleoenvironm, Beijing 100044, Peoples R China
5.Univ Chinese Acad Sci, Coll Earth & Planetary Sci, Beijing 100049, Peoples R China
推荐引用方式
GB/T 7714		 Abdelhady, Ahmed Awad,Khalil, Mahmoud M.,Ismail, Esam,et al. Potential biodiversity threats associated with the metal pollution in the Nile-Delta ecosystem (Manzala lagoon, Egypt)[J]. ECOLOGICAL INDICATORS,2019,98:844-853.
APA Abdelhady, Ahmed Awad.,Khalil, Mahmoud M..,Ismail, Esam.,Mohamed, Ramadan S. A..,Ali, Ahmed.,...&Xiao, Jule.(2019).Potential biodiversity threats associated with the metal pollution in the Nile-Delta ecosystem (Manzala lagoon, Egypt).ECOLOGICAL INDICATORS,98,844-853.
MLA Abdelhady, Ahmed Awad,et al."Potential biodiversity threats associated with the metal pollution in the Nile-Delta ecosystem (Manzala lagoon, Egypt)".ECOLOGICAL INDICATORS 98(2019):844-853.

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来源：地质与地球物理研究所

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