Isaac Stanley C.

Biomarker Responses in Fish and Crustaceans Exposed to Heavy Metals and Petroleum Hydrocarbons in the Qua Iboe Estuary, Niger Delta

Ohaturuonye Sampson O., Okpoji Awajiiroijana U., Akpan Nsima A., Njoku Chukwunonso A., Isaac Stanley C., Etesin Monday U. & Ekwere Ifiok O. · Asian Journal of Research in Zoology · 2025

Aquatic organisms inhabiting petroleum-impacted estuaries of the Niger Delta are frequently exposed to complex mixtures of heavy metals and hydrocarbons capable of inducing biochemical and physiological stress. This study evaluated the concentrations of Pb, Cd, Hg, As, Cr, and to...

Open access Research Article 10.9734/ajriz/2025/v8i4233

Sediment Geochemistry and Benthic Ecological Quality in Coastal Waters of Rivers State, Nigeria

Eyibara, Oghenehokoke U., Abia Uwem B., Asuaiko Ekpedeme R., Okpoji Awajiiroijana U., Iikediuwa, Sandra C., Omuluche, Collins O., Nwauzor J. N., Nwanekwu Akunna M., Onuchukwu Ejikeme E. & Isaac Stanley C. · Asian Journal of Geological Research · 2026

Coastal sediments act as repositories and potential secondary sources of contaminants, while their physicochemical characteristics influence the retention, mobility, and bioavailability of heavy metals. In the Niger Delta, increasing anthropogenic pressures have raised concerns a...

Open access Research Article 10.9734/ajoger/2026/v9i3296