Anthropogenic Disturbance Factors in the Ouémé Supérieur Classified Forest in Northern Benin

Abstract

The increasing dependence of rural communities on forest resources contributes significantly to deforestation and ecosystem degradation in West Africa. The Ouémé Supérieur Classified Forest (OSCF), one of Benin’s largest forest reserves, is under growing anthropogenic pressure. This study assessed the spatial distribution and relationships between key degradation drivers (anthropogenic disturbances)—logging, agriculture, charcoal production, fire, and grazing—in the OSCF. Field inventories were conducted in 300 plots of 500 m2 each, organized across 15 transects. Data were analyzed using presence/absence indices, frequency calculations, Friedman tests, simple correspondence analysis, and linear regressions. Results showed that disturbances are unevenly distributed across the forest. Logging and agriculture emerged as the most frequent pressures, with agricultural activities strongly associated with transects near densely populated villages. Regression analysis revealed a relatively strong correlation between distance from edge to the interior of the forest and agricultural area (adjusted R2 = 0.61). Logging and fire-related activities are concentrated at the forest edge, while agriculture expanded toward the interior. Logging is present in all plots sampled. Chi-square tests revealed significant associations between agriculture, charcoal production, and fire. These findings highlight the complex and interlinked nature of the anthropogenic disturbances and underscore the need for locally tailored, participatory forest management strategies.