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This study investigates the geochemical properties of extracted water in mangrove swamp sediments from oil-producing communities of Gbaramatu Kingdom, Niger Delta. Physicochemical parameters such as pH, salinity, temperature, redox potential (Eh), dissolved oxygen (DO), and carbon (IV) oxide (CO2) were analyzed to assess the ecosystem health. Ten water samples were collected at varying depths from two stations and analyzed using standard techniques, with some parameters measured in situ. In Oporoza, pH ranged from 6.26 to 7.08, while in Okpogbene, it ranged from 6.34 to 6.74. Salinity was low (0.08–0.21 ppt), reflecting brackish water influenced by tides. Temperatures (29.3–29.6 °C) were stable, supporting tropical mangrove ecosystems. The Eh in Oporoza ranged from +114 mV to +180 mV, indicating mixed conditions, while Okpogbene showed slightly oxidizing conditions (+133 mV to +198 mV); DO levels (7.2–7.6 mg/L) suggested well-oxygenated environments, while CO2 levels (10.56–24.64 mg/L) indicated active decomposition and carbon cycling. The study reveals that temperature, tides, and oil exploration activities influence sediment properties and microbial activity. Natural factors like tides, organic content (OC), and hydrocarbon pollution significantly shape the mangrove ecosystem. These insights are vital for understanding ecosystem dynamics and guiding mangrove and coastal conservation efforts.

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Geochemical Analysis of Extracted Water from Mangrove Swamps in Oil-Producing Communities of the Niger Delta: Insights into Depth Penetration

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  • 发表日期：

    2026年

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  • Michael E. Okiotor,
  • Osakpolor M. Omorogieva,
  • Jennifer B. Owonaro

摘要

This study investigates the geochemical properties of extracted water in mangrove swamp sediments from oil-producing communities of Gbaramatu Kingdom, Niger Delta. Physicochemical parameters such as pH, salinity, temperature, redox potential (Eh), dissolved oxygen (DO), and carbon (IV) oxide (CO2) were analyzed to assess the ecosystem health. Ten water samples were collected at varying depths from two stations and analyzed using standard techniques, with some parameters measured in situ. In Oporoza, pH ranged from 6.26 to 7.08, while in Okpogbene, it ranged from 6.34 to 6.74. Salinity was low (0.08–0.21 ppt), reflecting brackish water influenced by tides. Temperatures (29.3–29.6 °C) were stable, supporting tropical mangrove ecosystems. The Eh in Oporoza ranged from +114 mV to +180 mV, indicating mixed conditions, while Okpogbene showed slightly oxidizing conditions (+133 mV to +198 mV); DO levels (7.2–7.6 mg/L) suggested well-oxygenated environments, while CO2 levels (10.56–24.64 mg/L) indicated active decomposition and carbon cycling. The study reveals that temperature, tides, and oil exploration activities influence sediment properties and microbial activity. Natural factors like tides, organic content (OC), and hydrocarbon pollution significantly shape the mangrove ecosystem. These insights are vital for understanding ecosystem dynamics and guiding mangrove and coastal conservation efforts.