Distribution, sources and ecological risks of metals in surficial sediments of the Forcados River and its Estuary, Niger Delta, Nigeria

Iwegbue, Chukwujindu M. A.; Lari, Bulouebibo; Osakwe, S. A.; Tesi, Godswill O.; Nwajei, Godwin E.; Martincigh, Bice S.

doi:10.1007/s12665-018-7344-3

Cited by 14 publications

(6 citation statements)

References 53 publications

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“…Many driving forces related to urban activities have led to the contamination of urban rivers in Nigeria. The most notable driving forces in the Niger Delta Region include population density, use of public latrines, residential and informal settlements, industrial advancement, agriculture and oil exploration and power plants 43,47 . Some of the potentials urban pollutants in the selected urban rivers include heavy metals, pesticides, fertilizers and plastics wastes.…”

Section: Methodsmentioning

confidence: 99%

Insights from the Niger Delta Region, Nigeria on the impacts of urban pollution on the functional organisation of Afrotropical macroinvertebrates

Edegbene

Akamagwuna

2022

Sci Rep

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Anthropogenic activities, including urbanisation and industrialisation threaten stream ecological integrity, ecosystem community structure and ecosystem functioning of rivers and streams worldwide. However, developing sustainable monitoring strategies for ecological health remains a critical challenge in Africa. We examined the effects of urban disturbance on macroinvertebrate Functional Feeding Groups in selected streams in the Niger Delta Region of Nigeria. We sampled 11 sites between 2008 and 2012 and grouped into three site groups (Site groups 1 > 2 > 3). The groups represent an increasing gradient of urban pollution. Our result showed that urban-induced disturbances affected physicochemical variables in the study area (PERMANOVA; p < 0.05), with nutrients NO2-N, PO4-P, and electrical conductivity being significantly higher in impacted Site group 3 (ANOVA, p < 0.05). Predators and gatherers were the most dominant Functional Feeding Group recorded in the study area, while shredders were the least abundant macroinvertebrate Functional Feeding Groups. The multivariate RLQ analysis revealed that shredders, predators, and scrapers were tolerant of urban pollution, whereas gatherers were sensitive to increasing urban pollution. Overall, macroinvertebrates Functional Feeding Groups responded differentially to urban pollution in the Niger Delta Region. Identifying pollution indicator Functional Feeding Groups is seen as an important step towards developing a reliable, low-cost tool for riverine monitoring of urban pollution effects in Africa.

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Section: Methodsmentioning

confidence: 99%

Insights from the Niger Delta Region, Nigeria on the impacts of urban pollution on the functional organisation of Afrotropical macroinvertebrates

Edegbene

Akamagwuna

2022

Sci Rep

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“…Regulatory guidelines and standards for metals in dust are not available in most regions of the world. However, the specific guidelines for metals in soils have been adopted as basis for evaluating the significance of metal concentrations in dusts in a number of studies (Lin et al, 2015;Wei et al, 2015;Barrio-Parra et al, 2018;Iwegbue et al, 2018Iwegbue et al, , 2019. This stemmed from the fact that soils contribute approximately 30 to 40% of the contents of dusts (Butte and Heinzow, 2002;Ibanez et al, 2010;Barrio-Parra et al, 2018).…”

Section: Some Physicochemical Characteristics and Metal Distributions...mentioning

confidence: 99%

“…Metals have been established to cause diverse adverse health effects such as skin problems, nervous, respiratory and reproductive systems disorder, renal and endocrine systems dysfunction (Iwegbue et al, 2019). Exposure to Pb can elicit permanent neurology damage, behavioural and developmental abnormalities in children, Cd and Pb can cause disruption in the repair and replication of DNA through inference with nuclear uptake of essential metal ions and homeostasis (Menzie et al, 2009;Hassan, 2012;Iwegbue et al, 2018). The study of metal status in indoor dusts from workplaces is of concern giving the considerable amounts of time (at least 8 to 12 h) people spend in such environment per day and the need to ameliorate the risk of occupational exposure to contaminants arising from the activities within the indoor workplace environments.…”

Section: Introductionmentioning

confidence: 99%

“…Humans can be exposed to metals present in dusts from workplace environments via contact with the skin, inhalation and unconscious ingestion. In recent decades, the occurrence of metals in dusts have been studied in workplace environments such as offices, cybercafés, school laboratories, wood saw mills, e-waste recycling workshops, printing studio, car spray painting and metal design workshops (Nwajei and Iwegbue, 2007a,b;Kurt-Karakus 2012;Liu et al, 2013;Haung et al, 2014;Xu et al, 2015;Iwegbue et al, 2018;2019). Nduka et al (2017) investigated the Cd, Cr and Ni contents in paint flakes from auto-panel workshops in the eastern parts of Nigeria.…”

Section: Introductionmentioning

confidence: 99%

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Distribution, sources and risk assessment of metals in dusts from automobile mechanic workshops in Nigeria

chukwujindu

Nnanna

Ikpefan

et al. 2022

Preprint

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This study investigated the concentrations of nine metals such as Cd, Pb, Cr, Ni Cu, Co, Mn, Zn and Fe in dusts from automobile mechanic workshops (AMWs) in the Niger Delta, Nigeria. Samples of dusts were digestion with aqua-regia and analyzed for metals using atomic absorption spectrometry. The levels of metals in the AMW dusts (mg kg− 1) were 0.12 to 4.20 for Cd, 11.3 to 3897 for Pb, 9.05 to 45.3 for Cr, 0.35 to 345 for Ni, 170 to 56390 for Cu, 1.05 to 31.4 for Co, 51.3 to 310 for Mn, 143 to 634 for Zn and 70875 to 258013 for Fe. Metal distribution patterns in dusts from AMWs followed the sequence; Fe > > Cu > Zn > Mn > Pb > Cu > Ni > Co > Cd. The indices for pollution assessment indicated that Cd, Cu, Pb and Zn were the top contaminants in the AMW dusts. The hazard index values obtained for children’s exposure to metal laden dusts from these AMWs were above 1 which implies that children exposure to dusts from AMWs could elicit adverse non-carcinogenic heath effects. The carcinogenic risk values obtained for human exposure to metals in these AMW dusts were above safe levels indicating possibility of inducing cancer or cancer related sickness. The sources of metals in dusts from the AMWs are related to automobiles emissions and discharges from vehicular components.

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“…Early studies used pollutants or sensitive species to assess regional ecological risks, such as the relative risk model (RRM) (Landis et al, 2017; Obery & Landis, 2002), to assess the risks of a specific hazard to the ecosystem, such as pesticides (Backhaus & Faust, 2012; Carazo‐Rojas et al, 2018; Gustavsson et al, 2017; Manjarres‐Lopez et al, 2021; Rico et al, 2022; Severo et al, 2020; Snow et al, 2020), heavy metals (Ali et al, 2022; Bak et al, 2020; Costa‐Boddeker et al, 2017; Duodu et al, 2017; Elias et al, 2018; Gargouri et al, 2018; Iwegbue et al, 2018; Pellinen et al, 2021; Rajaram et al, 2021; Sarker et al, 2020; Singh et al, 2021; Vinothkannan et al, 2022; Yap & Al‐Mutairi, 2022), antibiotics (Apreja et al, 2022; Ashfaq et al, 2016; Mirzaei et al, 2019; Riaz et al, 2017), invasive species (Adams et al, 2016; Zengeya et al, 2013), etc. However, ecological risks are not only caused by pollutants but also by other factors (Elliott et al, 2014; Phan et al, 2013; Sarkar et al, 2016), such as reclamation (Melville et al, 2016; Quan‐Hui et al, 2022), land loss and fragmentation (Lam et al, 2018), drought (Muro et al, 2018), etc.…”

Section: Introductionmentioning

confidence: 99%

A remote sensing‐based approach for spatiotemporal refined assessment of freshwater wetland ecological risk in coastal zones: A case in Jiangsu's coastal zone

Xiong

Huang

et al. 2023

Land Degrad Dev

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Rapid, long‐term, and robust wetland ecological risk assessment is critical for managing coastal zones. In view of the characteristics of frequent human activities and broken plots in the coastal zone, the traditional assessment method is not fine enough. Satellite earth observation provides an unparalleled source of data for rapidly monitoring and assessing coastal wetland ecological risks through time and across a large spatial range. With the support of multi‐source remote sensing data such as precipitation, temperature, night light, land cover products, etc., a wetland ecological risk assessment method is established in this paper, and the wetland ecological risk is evaluated year by year by a grid. The evaluation results indicate that the ecological risk level of coastal wetlands in Jiangsu Province has shown an upward trend since 2015, with a high ecological risk in the north and a low ecological risk in the south, and the source area mainly appears in the northwest. Meanwhile, the year‐by‐year grid assessment can not only accurately describe the spatial and temporal distribution of wetland ecological risks but also clarify the spatial and temporal characteristics of risk source areas. Additionally, the results obtained by year‐on‐year assessment of consecutive years and clustering and zoning according to the time‐series can better represent the risk status of the time period and exclude the impact of accidental factors on the evaluation results. Although optimization for different types of wetlands can improve the accuracy of assessment, more wetland risk assessment with a longer term and a larger scale, combined with carbon emissions, will provide a basis for global wetland management.

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Distribution, sources and ecological risks of metals in surficial sediments of the Forcados River and its Estuary, Niger Delta, Nigeria

Cited by 14 publications

References 53 publications

Insights from the Niger Delta Region, Nigeria on the impacts of urban pollution on the functional organisation of Afrotropical macroinvertebrates

Insights from the Niger Delta Region, Nigeria on the impacts of urban pollution on the functional organisation of Afrotropical macroinvertebrates

Distribution, sources and risk assessment of metals in dusts from automobile mechanic workshops in Nigeria

A remote sensing‐based approach for spatiotemporal refined assessment of freshwater wetland ecological risk in coastal zones: A case in Jiangsu's coastal zone

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