Polycyclic aromatic hydrocarbons (PAHs) in surficial sediments from selected rivers in the western Niger Delta of Nigeria: Spatial distribution, sources, and ecological and human health risks

Iwegbue, Chukwujindu M. A.; Irerhievwie, G.; Tesi, Godswill O.; Olisah, Chijioke; Nwajei, Godwin E.; Martincigh, Bice S.

doi:10.1016/j.marpolbul.2021.112351

Cited by 29 publications

(3 citation statements)

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“…In Nigeria, water resource managers are presented with the overwhelming task of developing effective biomonitoring tools to assess and manage pollution from urban activities, including industrialisation and oil exploration 9,43,46 . In this study, we explored the community patterns of macroinvertebrate FFGs to urban pollution, hoping to identify indicator FFGs for long-term urban pollution monitoring in the Niger Delta Region of Nigeria.…”

Section: Discussionmentioning

confidence: 99%

“…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%

“…As a result, previous regional studies have shown that the loss of forested riparian catchments have grave consequences on streams' abiotic and biotic components 26 . Further, the area hosts numerous oil exploration activities 43 , contributing to water quality deterioration and biodiversity loss. Consequently, communities in the region face limited access to quality water supply, with severe implications on human health, economy and society 44 .…”

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confidence: 99%

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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: Discussionmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

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