Ubong Eno Akpan

Heavy Metal Concentrations in Tissues of Manila Clams (Venerupis philippinarum) from the Cross River Basin in Itu Local Government Area, Akwa Ibom State, Nigeria

Samuel Udo Morrison, Mary P. Ekanim, Ubong Eno Akpan & Esther Hope Udoh · Asian Journal of Geographical Research · 2026

Heavy metal contamination of aquatic environments is an important concern because metals can persist, accumulate in aquatic organisms and enter the human diet through seafood consumption. This study assessed the concentrations of cadmium (Cd), iron (Fe), copper (Cu), nickel (Ni),...

Open access Research Article 10.9734/ajgr/2026/v9i3427

Heavy Metal-induced Oxidative Stress and Antioxidant Defence Responses in Aquatic Macrophytes of the Qua Iboe River Estuary

Udoh Esther Hope, Ita Ewa Oboho, Aniefiok Ini Inyang & Ubong Eno Akpan · Asian Journal of Environment & Ecology · 2026

Heavy metal contamination of freshwater ecosystems is a major environmental concern because metallic pollutants are persistent, toxic, bioaccumulative and capable of inducing oxidative stress in aquatic organisms. Aquatic macrophytes exposed to metal pollution may experience exce...

Open access Research Article 10.9734/ajee/2026/v25i7974

Seasonal Dynamics of Physicochemical Characteristics and Nutrient Enrichment in a Tropical Mangrove Estuary, South-Eastern, Nigeria

Samuel Udo Morrison, Kokoette Sunday Effiong, Aniefiok Ini Inyang, Ita Ewa Oboho & Ubong Eno Akpan · Asian Journal of Environment & Ecology · 2026

Mangrove estuaries are dynamic ecosystems influenced by complex interactions between freshwater inflow, tidal exchange, nutrient cycling, and anthropogenic activities. This study investigated the seasonal dynamics of physicochemical characteristics and nutrient enrichment in the...

Open access Research Article 10.9734/ajee/2026/v25i6946