Anthropogenic induced physicochemical gradients and associated macroinvertebrate community changes in derived savannah stream in Nigeria: Implication for biotic assessment

Ezenwa, Ifeanyi Maxwell; Ekechukwu, Nkiru Esther; Ukwueze, Chidera; Okafor, Gift; Orakwelu, Chinemerem Hodges; Ezeorah, Cajetan Chidebem; Hinmikaiye, Fumilayo Faith; Ngene, Chinedu Innocent; Omoigberale, Michael O.; Nwani, Christopher Didigwu

doi:10.1016/j.chnaes.2022.06.003

Cited by 3 publications

(7 citation statements)

References 49 publications

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“…The results of the ANOVA test can determine p<0.05 or significant and p>0.05 (not significant). If the ANOVA test results are significant, a further test is carried out with the Least Significant Difference (LSD) test (Ezenwa et al 2023). Spearmans correlation analysis using IBM SPSS 27 was carried out to determine the correlation between physicochemical variables, macroinvertebrate abundance and ecological indices.…”

Section: Discussionmentioning

confidence: 99%

“…The water insects were identified at the family level using a guidebook (Grise 2008;Beauchene 2021). Types of aquatic insects that cannot be identified in the field are brought to the Biology Laboratory for identification (Ezenwa et al 2023).…”

Section: Data Collection Of Physicochemical and Macroinvertebratementioning

confidence: 99%

“…The result from characterization of the selected physicochemical parameters in the Watumokala and Nokambu Rivers, showed that list the parameters differed significantly. The physicochemical parameters that differ significantly in each river and at each observation station in the river are associated with environmental conditions that are affected by different anthropogenic activities (Zelnik and Muc 2020;Liu et al 2022;Ezenwa et al 2023). Rivers have unique natural characteristics and besides being influenced by land use around the riverbanks (dos Reis Oliveira et al 2020) they are also influenced by the width and depth of the river, the slope of the slopes (Mengen et al 2020), the condition of canopy cover (Krisanti et al 2020), and the substrates they contain (Kujanová et al 2018;Gething et al 2020).…”

Section: Physical and Chemical Parameters Of River Water Qualitymentioning

confidence: 99%

“…If the Shannon and Margalef diversity indices are low, it reflects a decrease in species composition caused by environmental degradation due to human anthropogenic pressure (Bassey et al 2020). This can be seen from the anthropogenic influence on the Watumokala River, namely activities related to lowland rice farming and rural settlements which are still dominated by plantation crop farming, whereas on the Watumokala River, there is already the influence of pressure from urban activities which are less agricultural (Anh et al 2023;Ezenwa et al 2023). So the results of the FBI assessment show that at stations that are disturbed by human anthropogenic activities, the water quality is slightly impacted and fairly substantial pollution is likely (Ogbeibu et al 2013;Enawgaw and Lemma 2019).…”

Section: Ecological Indices Determine Water Quality In Watumokala And...mentioning

confidence: 99%

“…In contrast, the Diptera order (Tipulidae B family) which is tolerant of pollution is found at station 2 of the Watumokala River and in the Nokambu River. There were also many Odonata orders found in the Nokambu River spread across all stations, giving an indication that the river has experienced a lot of human disturbance (Ezenwa et al 2023). This research shows that there is no difference in water quality between the use of forest land and agricultural land and rural settlements (Fierro et al 2017), especially in the Watumokala River because it is still in the good category, but in the Nokambu River in dense settlements, the water quality is already at medium status (Orozco-González and Ocasio-Torres 2023).…”

Section: Ecological Indices Determine Water Quality In Watumokala And...mentioning

confidence: 99%

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Used macroinvertebrates as bioindicators to compare water quality from different land uses in Watumokala and Nokambu Rivers, Southeast Sulawesi, Indonesia

KAHIRUN,

BASRUDIN,

SIWI

et al. 2023

Biodiversitas

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Abstract. Kahirun, Basrudin, Siwi LO, Indriyani L, Bana S, Sudia LB, Erif LOM, Midi LO, Maulina N, Jamaluddin N. 2023. Used macroinvertebrates as bioindicators to compare water quality from different land uses in Watumokala and Nokambu Rivers, Southeast Sulawesi, Indonesia. Biodiversitas 24: 5693-5708. Macroinvertebrates are animals that live in waters, both on the surface of the water, in riverbeds attached to substrates or mud, and in several biotypes, which are used as bioindicators of water quality due to anthropogenic disturbances that can change land use around rivers. This study aimed to describe the physicochemical parameters and macroinvertebrate community in the Watumokala and Nokambu rivers in Southeast Sulawesi, Indonesia, and to compare the water quality in the two rivers based on ecological index measurements. This study used a survey method at the upstream, middle, and downstream sampling locations for each river with different land use. Data collection on macroinvertebrates and physicochemical parameters was carried out at each station in each river. The data analysis carried out in this study was to calculate the Shannon-Wienner diversity index, species abundance index, uniformity index, Margalef richness index, and the Family Biotic Index (FBI). The results of this study indicated that in the Watumokala River, there were 17 families from 9 macroinvertebrate orders with an abundance of 1852 individuals, more than in the Nokambu River where 14 families were found from 8 orders with an abundance of 904 individuals. There is an influence of land use habitat on macroinvertebrates in the Watumokala and Nokambu Rivers. In the Watumokala River station 1 and station 3 are similar and have a significant correlation with several indicators indicating that the water quality is still good, while at station 2 there is a positive correlation with physicochemical parameters which indicates that the water quality is slightly polluted. Likewise, in the Nokambu River, at station 1 and station 2, there are similarities and significant correlations between physicochemical parameters and macroinvertebrate communities in providing indicators that water quality is still good, while station 3 shows a significant correlation with physicochemical parameters and macroinvertebrates as indicators of water quality polluted. So, the results of this research are useful in efforts to manage land and water in rivers that are experiencing pollution.

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Section: Discussionmentioning

confidence: 99%

Section: Data Collection Of Physicochemical and Macroinvertebratementioning

confidence: 99%

Section: Physical and Chemical Parameters Of River Water Qualitymentioning

confidence: 99%

Section: Ecological Indices Determine Water Quality In Watumokala And...mentioning

confidence: 99%

Section: Ecological Indices Determine Water Quality In Watumokala And...mentioning

confidence: 99%

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Used macroinvertebrates as bioindicators to compare water quality from different land uses in Watumokala and Nokambu Rivers, Southeast Sulawesi, Indonesia

KAHIRUN,

BASRUDIN,

SIWI

et al. 2023

Biodiversitas

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Organophosphate pesticide residue impact on water quality and changes in macroinvertebrate community in an Afrotropical stream flowing through farmlands

Ikayaja,

Arimoro

2024

Environ Monit Assess

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River Chanchaga has experienced signi cant agricultural practices around its catchment, which involved indiscriminate use of pesticides. However, residents of the study area are not well oriented concerning the negative impact of pesticides on water quality and macroinvertebrates. In this study, the rst report on the in uence of organophosphate pesticide contamination on the abundance of the macroinvertebrate community was provided. Sampling for determination of organophosphate pesticide residues was carried out during the peak of the two seasons, while macroinvertebrates and physicochemical variables were observed for six months. We examined 11 organophosphate pesticide residues using Gas Chromatography coupled with Mass Spectrometry, 12 water quality variables, and 625 macroinvertebrate individuals. The concentration of recorded organophosphate pesticides residues ranged from 0.01-0.52 µg/L. From the Canonical Correspondence Analysis plot, Malathion, chlorine, and para n show a positive correlation with Unima sp., Hydrocanthus sp., Chironomus sp., and Potadoma sp. At station 3, depth shows a positive correlation with Biomphalaria sp. and Zyxomma sp., indicating poor water quality as most of these macroinvertebrates are indicators of water pollution. Diuron and carbofuran show a negative correlation with Lestes sp. and Pseudocloeon sp., and these are pollutionsensitive macroinvertebrates. The total mean concentration of organophosphate pesticide residues was above international drinking water standards set by the World Health Organization except for para n, chlorpyrifos, and diuron. In conclusion, the observations recorded from this research are useful in managing pesticide application around the river catchment.

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Organophosphate Pesticide Residues Impact on Water Quality and Changes in Macroinvertebrate Community in an Afrotropical Stream Flowing Through Farmlands

Ikayaja,

Arimoro

2024

Preprint

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River Chanchaga has experienced significant agricultural practices around its catchment, which involved indiscriminate use of pesticides. However, residents of the study area are not well oriented concerning the negative impact of pesticides on water quality and macroinvertebrates. In this study, the first report on the influence of organophosphate pesticide contamination on the abundance of the macroinvertebrate community was provided. Sampling for determination of organophosphate pesticide residues was carried out during the peak of the two seasons, while macroinvertebrates and physicochemical variables were observed for six months. We examined 11 organophosphate pesticide residues using Gas Chromatography coupled with Mass Spectrometry, 12 water quality variables, and 625 macroinvertebrate individuals. The concentration of recorded organophosphate pesticides residues ranged from 0.01–0.52 µg/L. From the Canonical Correspondence Analysis plot, Malathion, chlorine, and paraffin show a positive correlation with Unima sp., Hydrocanthus sp., Chironomus sp., and Potadoma sp. At station 3, depth shows a positive correlation with Biomphalaria sp. and Zyxomma sp., indicating poor water quality as most of these macroinvertebrates are indicators of water pollution. Diuron and carbofuran show a negative correlation with Lestes sp. and Pseudocloeon sp., and these are pollution-sensitive macroinvertebrates. The total mean concentration of organophosphate pesticide residues was above international drinking water standards set by the World Health Organization except for paraffin, chlorpyrifos, and diuron. In conclusion, the observations recorded from this research are useful in managing pesticide application around the river catchment.

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Anthropogenic induced physicochemical gradients and associated macroinvertebrate community changes in derived savannah stream in Nigeria: Implication for biotic assessment

Cited by 3 publications

References 49 publications

Used macroinvertebrates as bioindicators to compare water quality from different land uses in Watumokala and Nokambu Rivers, Southeast Sulawesi, Indonesia

Used macroinvertebrates as bioindicators to compare water quality from different land uses in Watumokala and Nokambu Rivers, Southeast Sulawesi, Indonesia

Organophosphate pesticide residue impact on water quality and changes in macroinvertebrate community in an Afrotropical stream flowing through farmlands

Organophosphate Pesticide Residues Impact on Water Quality and Changes in Macroinvertebrate Community in an Afrotropical Stream Flowing Through Farmlands

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