Bio
Dr. Okpo Esio Unanaonwi is a distinguished researcher in forest ecology and soil science, currently affiliated with the Department of Biology at Federal University Otuoke in Bayelsa State, Nigeria. He holds a Bachelor's degree in Agriculture (Forestry & Wildlife), a Master's in Forest Resources Management, and a PhD in Forest Ecology. His research focuses on the physical and chemical characteristics of forest soils, tree species diversity, and the effects of soil nutrients on gum yield. Dr. Unanaonwi has authored over 38 scholarly publications, including international and national papers, and has served as a peer reviewer. He is also an active fellow of the university, contributing to ongoing projects and mentoring scholars. His notable works include studies on soil properties in the Southern Guinea Savanna and the structure of tree species in the lowland rainforest of Bayelsa State.
Educational Journey
Federal University Otuoke
B,Agric. Forestry & Wildlife, M.Sc. Forest Resources Management, Ph.D Forest Ecology. • Forest Ecology
Experience
Research
Physical and Chemical Characteristics of Forest Soil in Southern Guinea Savanna of Nigeria
Most studies on soil characteristics have been centered on suitability for agricultural production and once a soil does not support crop production it is referred to as poor, unproductive, and finally abandoned. Such soil can be very useful for forest crop plantation. This study was designed to investigate characteristics and describe the forest soil in Ombi, southern Guinea savanna of Nigeria. Soil samples were collected randomly from three locations around the engineering department of Nasarawa State Polytechnic Lafia, at depth of 0-30cm. Samples (1kg each) were taken in plastics bags to the laboratory for studies. Physical and chemical properties were analyzed according to standard procedures. Results show that sand had the highest % in soil of the area (74.96). Bulk densities were within the same range (1.68; 1.77 and 1.78g/cm3) for sand, silt and clay respectively. Sand had the highest porosity (37.7%) while clay had the least (31.6%). Aggregate stability was least for sand (9.74%) and highest for clay (56.82%). Soil reaction was neutral (7.05); nitrogen and CEC were 1.6 and 12.3 Cmol kg -1 among others, while organic carbon was 4.82g/kg-1. The soil is described as light and falls under sandy loam. Forest plantation establishment will be worthwhile.
