Pesticides distribution in surface waters and sediments of lotic and lentic ecosystems in Agbede wetlands

Dirisu, Abdul-Rahman; Ekaye, Sese-Owei; Olomukoro, John Ovie

doi:10.4314/ejesm.v9i2.6s

Cited by 2 publications

(2 citation statements)

References 10 publications

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“…Total dissolved solids (TDS) and electrical conductivity (EC) were ascertained with the aid of a HACH TM TDS/Conductivity meter. The values for turbidity, colour, total suspended solids (TSS), nitrate, phosphate and sulphate were determined through spectrophotometry as described by Dirisu et al (2016). Dissolved oxygen (DO) and biochemical oxygen demand (BOD) were determined using modified Winkler titration procedure as detailed by Ademoroti (1996).…”

Section: Physico-chemical Testsmentioning

confidence: 99%

Mycofiltration of urban derived raw stormwater using Lentinus squarrosulus

Obayagbona,

Dunkwu-Okafor,

Odigie

2024

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The physicochemical and microbial attributes of storm water samples prior to and after mycofiltration was determined using routine methods. The preparation of the substrate was done by supplementation of un-fermented sawdust with calcium carbonate, calcium sulphate, granulated sugar and wheat offal. The mixture was allowed to undergo composting for 7 days upon which, it was inoculated with Lentinus squarrolsulus spawn and incubated at room temperature. The sample was then passed through a network of mycelia for pollutant removal. The mean TDS and EC concentrations of the raw and mycofiltered samples was 1369.8 ± 4.5 and 516.4 ± 2.9 mg/l as well as 2785.0 ± 4.2 and 1251.0 ± 5.6 µS/cm. Pb, Cu, Cd, Cr and Fe readings for the raw samples were 0.03±0.03mg/l, 0.07±0.03 mg/l, 0.01±0.01mg/l, 0.03±0.01mg/l and 1.00±0.11mg/l. For the mycofiltered samples, the Pb, Cd and Cr were reduced to nil while Cu and Fe decreased to 0.03 ± 0.03 mg/l and 0.47± 0.09 mg/l. The difference between the mean trace metal values recorded for the raw and filtered samples was insignificant (p>0.05). The results indicated that mycofilter derived from L. squarrolsulus mycelia was capable of purifying storm water sample.

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Section: Physico-chemical Testsmentioning

confidence: 99%

Mycofiltration of urban derived raw stormwater using Lentinus squarrosulus

Obayagbona,

Dunkwu-Okafor,

Odigie

2024

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“…Massive organic matter deposits are believed to cause the high values of conductivity, TDS, and hardness in gours with abundant guano. These three parameters are known to have strong positive correlations (Dirisu et al 2018).…”

Section: Physicochemical Characteristic Of Microhabitatsmentioning

confidence: 99%

Stygobiotic isopod Stenasellus sp. in Sarongge Jompong cave, Tasikmalaya karst area, Indonesia

Kurniawan

Rahmadi²,

Akbar³

et al. 2022

Biodiversitas

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Abstract. Kurniawan ID, Rahmadi C, Akbar RTM, Prakarsa TBP. 2022. Stygobiotic isopod Stenasellus sp. in Sarongge Jompong cave, Tasikmalaya karst area, Indonesia. Biodiversitas 23: 1495-1504. Stenasellus, a stygobiotic isopod, was first reported in Tasikmalaya karst by local cavers in 2018 in Sarongge Jompong Cave. This study aimed to investigate the population, activities, and habitat characteristics of Stenasellus sp. in Sarongge Jompong, Tasikmalaya karst area, Indonesia. Population and activities were recorded through direct intuitive search. We measured several important physicochemical parameters to study habitat characteristics. Statistical analyses-namely Non-metric Multi-dimensional Scaling and Detrended Correspondence Analysis-were conducted to understand the difference in water characteristics among microhabitats and the relation between water characteristics and population size. The results showed that the population was distributed in 4 microhabitats with the maximum observed individuals of 8. Several activities were successfully monitored, including crawling, resting, hiding in crevices, and moving to different locations through the water. All microhabitats were wet gours connected to small water currents located in the dark zone of the cave passage. Water characteristics of microhabitat site 1 were more similar to site 2 and the numbers of individuals in these sites were larger than sites 3 and 4. Among water parameters, resistivity showed the most robust relation with Stenasellus population in which both variables were positively correlated. This correlation indicated that Stenasellus sp. preferred microhabitats with less contamination. Intrinsic and extrinsic factors may potentially threaten the population. The potential threats and conservation challenges need to be identified and mitigated to reduce the risk of biodiversity loss to these isopods, mainly due to their small population size, specific microhabitat, and susceptibility to disturbance. Considering these factors, research on taxonomy will be essential for conservation efforts.

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Pesticides distribution in surface waters and sediments of lotic and lentic ecosystems in Agbede wetlands

Abstract: An investigation on the availability and distribution of Lindane (HCHs)

Cited by 2 publications

References 10 publications

Mycofiltration of urban derived raw stormwater using Lentinus squarrosulus

Mycofiltration of urban derived raw stormwater using Lentinus squarrosulus

Stygobiotic isopod Stenasellus sp. in Sarongge Jompong cave, Tasikmalaya karst area, Indonesia

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