Identification of waterbody status in Nigeria using predictive index assessment tools: a case study of Eme River, Umuahia, Nigeria

Anyanwu, Emeka Donald; Umeham, Solomon Nnanna

doi:10.1007/s42108-020-00066-5

Cited by 16 publications

(14 citation statements)

References 26 publications

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“…Rivers are natural resources that offer a wide range of ecosystem services from drinking to water utilities in industry, agriculture, transportation and recreation [31,32]. Rivers need have a healthy ecosystem and a good water quality in order to provide these services.…”

Section: Discussionmentioning

confidence: 99%

“…Swimming by large number of children, bathing, washing and extraction of water for drinking were high during the dry season and affected turbidity in Station 1. However, Stations 4-6 had relatively higher values between May and November 2018; attributed to the effect of sand mining activities which increased with the rains [31,39,40]. This was more remarkable in Station 4 that was immediately downstream of sand mining and landing sites and steadily declined further downstream [41,42].…”

Section: Discussionmentioning

confidence: 99%

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Water Quality and Plankton Assessment of Eme River, Umuahia, Southeast Nigeria

Anyanwu

Adetunji

Umeham

2021

Preprint

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Certain anthropogenic activities have negative impacts on the aquatic ecosystems. Plankton are sensitive to their environment and are used to monitor anthropogenic impacts. A South-eastern Nigeria River was studied from December 2017 to November 2018 in 6 stations; to assess the plankton community, water quality and anthropogenic impacts. The river was subjected to intense sand mining activities among other activities. The plankton was sampled with filtration method while water was collected and analysed using standard methods. A total of 36 phytoplankton species and 27 zooplankton species were recorded with Chlorophyceae and Rotifers being the most abundant groups. The most abundant species - Melosira granulata (phytoplankton) and Daphnia pulex (zooplankton) are pollution indicators. Some of the physicochemical parameters showed that the river was perturbed by the anthropogenic activities in the watershed. However, the plankton assemblage and community structure gave an indication of a stable environment; though the zooplankton fauna showed some level of stress. The impacts of sand mining activities on water quality and plankton were more in the downstream stations (4–6) where sand mining was intense while perturbation from swimming children and related activities were observed in station 1 especially during the dry season. The presence of eutrophic indicators and tolerant species showed that the river was tending towards eutrophication. Sand mining activities contributed to the nutrient enrichment of the river. CCA showed the major water quality parameters that influenced the plankton community structure. There is need to regulate illegal sand mining activities in the river.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Water Quality and Plankton Assessment of Eme River, Umuahia, Southeast Nigeria

Anyanwu

Adetunji

Umeham

2021

Preprint

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“…Turbidity values were high in stations 2 and 3; this could be traceable to dumping of allochthonous materials into the water body at these stations. and Anyanwu & Umeham (2020a) reported that high turbidity is associated with indiscriminate dumping of refuse, and other human activities. The high values recorded from June to September 2019 could be as a result of increased precipitation transporting allochthonous materials into the water body.…”

Section: Discussionmentioning

confidence: 99%

“…Related studies have shown that zooplankton abundance in the water body is associated with the seasonal fluctuations in some aspect of hydrochemistry concentration in the water body (Essien-Ibok & Ekpo, 2015;. Human activities such as industrial, indiscriminate disposal of wastes and agriculture are leading contributors to pollution in the aquatic ecosystem (Anyanwu et al, 2013;Anyanwu & Umeham 2020a;Jonah et al, 2020); these activities alter the favorable water quality for zooplankton growth and development. Uta Ewa Estuary is characterized by heterogeneous forms of anthropogenic activities, and it is the major source of water for irrigation and other domestic purposes communities within its watershed.…”

Section: Introductionmentioning

confidence: 99%

Spatio-Temporal Assessment of Zooplankton Fauna of Uta Ewa Estuary, Akwa Ibom State, Nigeria.

2020

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Estuaries are influenced by the mixture of river water with seawater; creating unique ecosystems with several physical and chemical processes affecting the water quality. Spatial and temporal assessment of the composition, abundance, and distribution of zooplankton fauna of Uta Ewa Estuarine water system was carried out between May 2019 and February 2020 to assess the effects of anthropogenic activities on the zooplankton assemblage. Water and Zooplankton samples were collected from three (3) stations using standard procedures. Some parameters like water temperature, dissolved oxygen, hydrogen-ion, electrical conductivity, and turbidity were determined in-situ. The ranges of the physico-chemical parameters were: water temperature (24.9-25.3oC), EC (62.3-70.9mS/m), pH (6.5-6.7), turbidity (12.0-28.0NTU), DO (3.8-4.7mg/L), BOD (2.3-3.2mg/L), phosphate (3.2-5.2mg/L), and nitrate (3.0-6.3mg/L). ANOVA showed a significant difference (p<0.05) in the spatial and temporal means values of some parameters. A total of 1,067 individuals from 30 zooplankton taxa and 4 taxonomic groups were recorded. Rotifers (33.4%) were the dominant group, followed by protozoa (32.9%), copepods (20.9%) and cladocerans (13.8%). Station 1 had the highest abundance (388 individuals), station 2 (303 individuals) and station 3(375 individuals). The higher number of individuals (193) was recorded in August 2019. The biodiversity indices pointed to slightly polluted to stable environment. This study showed that the water quality and zooplankton community was influenced by anthropogenic activities both spatially and temporally but season also played a major role in the temporal variation. In conclusion, the water quality was deteriorating due to anthropogenic activities, which in turn affected the structure of zooplankton community. Keywords: Abundance, Assessment, Zooplankton, Physicochemical, Estuary

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“…Despite the many efforts to create better WQIs, there is still no commonly accepted methodology [14], partly because of the regional peculiarities of the analyzed waters; as result, some studies focus on creating WQIs with applicability at national levels [15]. The calculus of WQI can use various references, such as the national standards for water quality [16,17] or the site-specific conditions [14].…”

Section: Introductionmentioning

confidence: 99%

Water Quality Index of Suceava River in Suceava City Metropolitan Area

Briciu

Graur

Oprea

2020

Water

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The water quality of rivers worldwide is of persistent interest due to its impact on human life. Five streamwater quality parameters of Suceava River were monitored in 2019 upstream and downstream of Suceava city, Romania: dissolved oxygen, specific conductivity, pH, oxidation-reduction potential, and temperature. Data was recorded at a high temporal frequency, every hour, and produced Water Quality Index (WQI) time series of similar resolution. Our additive WQI has variants with particular advantages. Water quality of Suceava city exhibits a diurnal cycle. Upstream, WQI values indicate a quasi-permanent good water quality; downstream, the water quality oscillates around the average WQI value because of the various sources of water contaminants, especially the wastewaters from the wastewater treatment plant. Parameters from this point source of pollution are taken into account to explain the decaying streamwater quality towards the end of 2019. WQI is useful for detecting time intervals when water self-purification events have a high chance of occurrence.

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Identification of waterbody status in Nigeria using predictive index assessment tools: a case study of Eme River, Umuahia, Nigeria

Cited by 16 publications

References 26 publications

Water Quality and Plankton Assessment of Eme River, Umuahia, Southeast Nigeria

Water Quality and Plankton Assessment of Eme River, Umuahia, Southeast Nigeria

Spatio-Temporal Assessment of Zooplankton Fauna of Uta Ewa Estuary, Akwa Ibom State, Nigeria.

Water Quality Index of Suceava River in Suceava City Metropolitan Area

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