IGGCAS OpenIR  > 新生代地质与环境院重点实验室
Potential biodiversity threats associated with the metal pollution in the Nile-Delta ecosystem (Manzala lagoon, Egypt)
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
2019-03-01
Source PublicationECOLOGICAL INDICATORS
ISSN1470-160X
Volume98Pages:844-853
AbstractMetal 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.
KeywordAnthropogenic impact Pollution indices Ecosystem stability Biodiversity Environmental quality
DOI10.1016/j.ecolind.2018.12.002
Funding OrganizationCAS 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
WOS KeywordHEAVY-METALS ; MELANOIDES-TUBERCULATA ; ESTUARINE SEDIMENTS ; SURFACE SEDIMENT ; LAKE MANZALA ; WATER ; CONTAMINATION ; MOLLUSKS ; SINAI ; FISH
Language英语
Funding ProjectCAS President's International Fellowship Initiative[2017VCC0013]
Funding OrganizationCAS 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
WOS Research AreaBiodiversity & Conservation ; Environmental Sciences & Ecology
WOS SubjectBiodiversity Conservation ; Environmental Sciences
WOS IDWOS:000464891100086
PublisherELSEVIER SCIENCE BV
Citation statistics
Document Type期刊论文
Identifierhttp://ir.iggcas.ac.cn/handle/132A11/91391
Collection新生代地质与环境院重点实验室
Corresponding AuthorAbdelhady, Ahmed Awad
Affiliation1.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
Recommended Citation
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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