Seasonal Variation and Ecological Risk Assessment of Heavy Metal Contamination in Surface Waters of the Ganges River (Northwestern Bangladesh)

doi:10.17576/mjas-2019-2302-14

Cited by 5 publications

(3 citation statements)

References 23 publications

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“…Water quality parameters like DO, pH, water transparency and TDS did not vary significantly over years in the Ganges at Rajshahi; they were within the suitable levels for fishes (DoE 2014). Similar conclusions have been drawn regarding levels of heavy metals in sediments and surface water of the Ganges (Haque et al 2019). Although water pollution is not yet a major threat to the river's biodiversity, it may become a problem soon and should be monitored carefully.…”

Section: Water Pollutionsupporting

confidence: 68%

Fish diversity decline in the lower Gangetic plains: a victim of multiple stressors

et al. 2022

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Analysis of long-term data provides a valuable approach to determining the extent of biodiversity decline and likely causes, but such approaches are rare in large tropical rivers. We investigated the response of the fish fauna to hydrological, climate and anthropogenic factors over the period 1982-2017 in the lower Ganges (Padma) River, Bangladesh. Systematic effort-based sampling of fish between 2007 and 2017 from a 70-km reach showed a decreasing trend in abundance and diversity. Compared to 1982 data for the same sites and fishing methods, 28 fish species, including 16 nationally threatened ones, were absent in recent catches, suggesting local extinction of these. Fish community diversity was negatively affected by fishing pressure (71 fishermen in 1980, 2616 in 2019, 37.8-fold increase) and non-native species abundance (6.8-fold increase in abundance between 2007 and 2017). Permanent water area has reduced by ~50% since 1984. Annual mean rainfall, Ganges water depth and river discharge at the study location decreased significantly since 1980 (by 19.2%, 17.8% and 27.6% respectively, while annual air temperature increased (25.1°C in 1981 to 26.2°C in 2019). Water diversion at the Farakka Barrage, ~70 km upstream, is partially responsible for reductions in permanent water area in the study reach. Potential sources of biological invasion and water pollution have been identified. Widespread ecological consequences on fish diversity and productivity, resulting from multiple factors, are occurring in the lower Ganges. Reduction of fisheries impacts and improved prevention of accidental aquaculture releases of non-native fishes are identified as conservation priorities for arresting the decline of native fishes in the lower Ganges.

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Section: Water Pollutionsupporting

confidence: 68%

Fish diversity decline in the lower Gangetic plains: a victim of multiple stressors

et al. 2022

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“…Manganese, chromium, and nickel had values that exceeded limits only during the dry months. This observed trend could also be attributed to season and anthropogenic influences as observed in iron, lead, and cadmium (Etesin et al, 2013;Houssou et al, 2017;Haque et al, 2019).…”

Section: Discussionmentioning

confidence: 95%

“…Grützmacher et al (2013) and CGWB (2014) defined geogenic sources as levels that exceeded permissible limits without any direct or indirect link to anthropogenic activities and could have negative health effects. Little or no precipitation, low flow rate, higher air temperatures, and higher evaporation during the dry months contribute to the concentration and higher values of the metals (Etesin et al, 2013;Houssou et al, 2017;Haque et al, 2019). The dry periods or seasons are also associated with increased human visitations and activities because rivers and streams are major sources of water for drinking and most domestic activities in the region (Onyele and Anyanwu, 2018;Anyanwu and Umeham, 2020a, b).…”

Section: Discussionmentioning

confidence: 99%

Heavy Metal Content of Water in Ikwu River (Umuahia, Nigeria): Pollution Indices and Health Risk Assessment Approach

Anyanwu

ADETUNJİ

NWOKE

2022

Acta Aquatica Turcica

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The heavy metal content of a local drinking water source in Southeast Nigeria was studied between January 2021 and June 2021 in 3 stations. Pollution indices (heavy metal pollution index and contamination index) and health risk assessment for noncarcinogenic were used to check the water's suitability for human consumption. Eight heavy metals were assessed with standard methods and compared with The Nigerian Drinking Water Quality Standard. Some metals (Mn, Pb, Fe, Cd, and Cr) exceeded acceptable limits. The heavy metal pollution index exceeded the threshold value (100), ranging between 503.56 and 746.80. The contamination index ranged between 10.74 and 17.12 indicating high contamination potential and all the hazard indices exceeded unity (1). The heavy metal content, pollution indices, and health risk assessment has shown that the water from the Ikwu River was not fit for human consumption. The main metals that influenced the results were Mn, Pb, Fe, Cd, and Cr, because they exceeded limits while Cd and Cr were responsible for the observed adverse health risk. The children were more vulnerable. The geogenic influence was a major factor exacerbated by season and anthropogenic activities in the river. Keywords Limits  Heavy metal  Water quality  Indices  Drinking water Özet: Güneydoğu Nijerya'da yerel bir içme suyu kaynağının ağır metal içeriği Ocak 2021 ile Haziran 2021 arasında 3 istasyonda incelenmiştir. Suyun insan tüketimine uygunluğunu kontrol etmek için kirlilik indeksleri (ağır metal kirlilik indeksi ve bulaşma indeksi) ve kanserojen olmayanlar için sağlık risk değerlendirmesi kullanıldı. Sekiz ağır metal, standart yöntemlerle değerlendirildi ve Nijerya İçme Suyu Kalite Standardı ile karşılaştırıldı. Bazı metaller (Mn, Pb, Fe, Cd ve Cr) kabul edilebilir sınırları aştı. Ağır metal kirlilik indeksi eşik değerini (100) aştı; 503,56 ile 746,80 arasında değişmektedir. Kirlilik indeksi 10.74 ile 17.12 arasında değişmekte olup, yüksek kontaminasyon potansiyeline işaret etmekte ve tüm tehlike indeksleri birden (1) aşmaktadır. Çocuklar daha savunmasızdı. Jeojenik etki, nehirdeki mevsim ve antropojenik faaliyetlerle şiddetlenen önemli bir faktördü.

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Assessment of physical and chemical properties, health risk of trace metals and quality indices of surface waters of the rivers and lakes of the Kola Peninsula (Murmansk Region, North–West Russia)

Yakovlev

Дружинина

Druzhinin

et al. 2021

Environ Geochem Health

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Seasonal Variation and Ecological Risk Assessment of Heavy Metal Contamination in Surface Waters of the Ganges River (Northwestern Bangladesh)

Cited by 5 publications

References 23 publications

Fish diversity decline in the lower Gangetic plains: a victim of multiple stressors

Fish diversity decline in the lower Gangetic plains: a victim of multiple stressors

Heavy Metal Content of Water in Ikwu River (Umuahia, Nigeria): Pollution Indices and Health Risk Assessment Approach

Assessment of physical and chemical properties, health risk of trace metals and quality indices of surface waters of the rivers and lakes of the Kola Peninsula (Murmansk Region, North–West Russia)

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