ASSESSMENT OF NATURAL REGENERATION POTENTIALS AND STAND STRUCTURES OF AGO-OWU FOREST RESERVE, OSUN STATE, NIGERIA

This study investigated the natural regeneration potentials and stand structures of Ago-Owu Forest Reserve, Osun State, Nigeria. The forest is a critical ecosystem facing pressures such as illegal logging and agricultural encroachment. Through cluster sampling, 15 temporary sample plots (35m x 35 m) were systematically laid. All trees with diameter at breast height (DBH) ≥ 5 cm were identified, and parameters such as DBH, height, crown diameter, and regeneration status were measured. Diversity indices (Shannon-Wiener, Simpson, and Pielou’s Evenness) and structural parameters like tree density and basal area were analyzed. Results indicated moderate species diversity (Shannon-Wiener Index = 3.1, Simpson’s Index = 0.85, Pielou’s Evenness = 0.78). Theobroma cacao, Cola millenii, Terminalia orientalis were among the most abundant species. About 43.48% of species showed good regeneration, while 21.74% showed no regeneration. These results highlight both the resilience and threats to this forest, indicating urgent need for conservation efforts.