Projects in recent years have been introduced in forest and forest edge ecosystems to slow or reverse loss of biodiversity, habitat fragmentation and deteriorating resources for human livelihood with mixed results. This research presents results of an evaluation of the effectiveness of participatory management interventions (tools) outcomes in conserving biodiversity based on the IUCN-WCPA framework. Derived from the review of literature and field survey data collection through focus group discussions, stakeholder consultation and line transects, it was found out that this site is significant to the village community as it serves as a water catchment and source of food and related NTFPs and for its biological importance for endemic/endangered species-using large mammals as indicator species. The main threat identified comes from hunting activities while the site remain vulnerable due to its not being officially recognised and binding (still as a Proposed Integral Ecological Reserve). Besides findings on the reserve status, the main interventions carried out by Cameroon government in partnership with WWF and a few other nongovernmental organisations including community groups are: conservation education/sensitisation, training and capacity building, monitoring and research, domestication and support (aid) to community in addressing identified threats. The results show that to an extend these interventions are participatory, appropriate and effective-the outcomes being stable in number of species, increase in formerly scares species, change in community attitude with a traditional hunting ban. This notwithstanding, the general recommendations and conclusion by this research is that, interventions that will lead to positive conservation of biodiversity outcomes should be locally based and actively participatory. These interventions should be geared towards a simultaneous enhancement of local institutions, diversifying alternative income/livelihood activities to reduce especially economic vulnerability of the site and for government to take urgent action in officially classifying this area as an Integral Ecological Reserve.