Assessment of ecological health of Swarnamukhi river estuary, southeast coast of India, through AMBI indices and multivariate tools

被引：23

作者：

Pandey, Vikas ^{[1
]}

Venkatnarayanan, S. ^{[1
]}

Kumar, P. Sathish ^{[1
]}

Ratnam, Krupa ^{[1
]}

Jha, Dilip Kumar ^{[1
]}

Rajaguru, S. ^{[1
]}

Dharani, G. ^{[1
]}

机构：

[1] Govt India, Minist Earth Sci, Natl Inst Ocean Technol, Chennai 600100, Tamil Nadu, India

来源：

MARINE POLLUTION BULLETIN | 2021年 / 164卷

关键词：

Sediment defaunation; Organic enrichment; Pollution; Estuarine macrofauna; AMBI; M-AMBI; HEAVY-METAL CONTAMINATION; MACROBENTHIC COMMUNITIES; ORGANIC-CARBON; TRACE-METALS; EAST-COAST; SEDIMENTS; QUALITY; WATER; EUTROPHICATION; MANAGEMENT;

D O I：

10.1016/j.marpolbul.2021.112031

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

A combination of biotic indices, geo-accumulation (Igeo) index, and a multivariate approach were applied to assess the anthropogenic influence on the benthic community at five stations from 2018 to 2019 in the Swarnamukhi river estuary, Nellore, India. Non-metric multidimensional scaling and cluster analysis indicated that the Buckingham canal (BC) station showed azoic conditions and formed a separate cluster. Strong positive factor loadings of Cd (0.96), Al (0.93), Zn (0.91), Fe (0.90), Co (0.89), Cu (0.89), Ni (0.87), Pb (0.85), Cr (0.77), organic matter (0.94), Silt (0.92), and clay (0.93) and negative loading of sand (-0.90) showed the variability in sediment. AMBI results illustrated the disturbance status of each station and classified BC station as 'extremely disturbed' class, and M-AMBI assessed the ecological status as 'bad'. The I-geo index also revealed metal (Cd) contamination. The present study illustrated that the combined approach is effective for ecological assessment of coastal ecosystem.

引用

页数：9

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