126 BSP's Transboundary Project was designed to obtain an overview of, to assess opportunities and constraints for, and to draw lessons learned from TBNRM developments in sub-Saharan Africa to date. Focus is on using collaborative natural resource management approaches to enhance or maintain ecosystem function and biodiversity conservation in large-scale natural systems in transborder areas. This document provides a case study on transboundary conservation of Mountain Gorillas in the Virunga-Bwindi Region as coordinated by the International Gorilla Conservation Programme. Date: 2001. Authors: A. Lanjouw, A. Kayitare, H. Ralner, E. Rutagarama, M. Sivha, S. Asuma, J. Kalpers. Biome: Freshwater Ecosystems. Program: Africa and Madagascar