On 16 to 25 January 2023, a survey of habitat dynamics was organized for the third quarter in the Kibira, Rusizi and Ruvubu National Parks. The objective of the survey is to contribute to the collection of data on biodiversity and the evolution of habitat states over the years. The objective of the descent was to: - Continue to identify possible changes in habitats on the quadrants of the ecological trails pre-established in these Parks; - Collect samples and build herbariums for their conservation in the herbarium and for their subsequent determination; - Identify the potential threats of these protected areas; - Identify the potential threats of these protected areas; - Establish a database on the evolution of ecosystem states over the years