1. MANTADIA- ZAHAMENA

2. Deforestation across elevation  Between 1974 and 1994: around 90% of forest <800 m are lost  Between 1990-2000: 0-800 m – 17.8% of the remaining forest are lost 800-1200 m – 5% 1200-1600 m - <1% Forest logging  Few direct impact of forest extraction on biodiversity  Major impacts in the short and medium term  Open up deforestation by local people  Rapid expansion of invasive plant species impeding regeneration of high economic valued species CONTEXT OF ZAHAMENA-MANTADIA Corridor area: 540,000 ha No. Population: ~800,000 Population density: 46 inhabitants/ km 2  Mining: small illegal mining activities and 4 companies  Hunting: very few data, but in reserves Indri and Varecia populations are abundant compared to other sites

3. CONTEXT ANALYSIS IN ZAHAMENA-MANTADIA  Durban Vision implementation- Conservation Sites  Design the logical framework to understand links between socio-economic factors and deforestation: issue, factors, changes, data requirement.  Collection and compilation of existing biological and socio- economic data with partners  Identification of gaps of information: RAP  Gap analysis, spatial analysis, participatory appraisal  Combine biological, geographic and economic data layers  Assess the landscape scenarios with associated biodiversity and economic values

4. CONTEXT ANALYSIS PRODUCTS  Priority zones for conservation are identified, with management rules and options for each zone to achieve conservation goals  Deforestation trends are projected in the future  Opportunity costs and benefits of conservation alternatives are assessed  Landscape scenarios with associated biodiversity and economic values are evaluated

5. KEY QUESTIONS  Where should the core conservation zone be? => value of biodiversity and ecological services  Where the deforestation rate is the highest in Zahamena-Mantadia ? => vulnerable sites  What and where do ecological function benefits come from, and who received them? => cost-benefit analysis  What management scenarios and rules do we need in order to conserve biodiversity of the highest value across the corridor? => biological and economic criteria

6. Land use and forest cover Roads Protected areas MCE Analysis Population density DEM Vulnerable sites DATA LAYERS Watersheds Mining Core Conservation sites

7.  Business-As-Usual : Cellular Automata Algorithm projects forest cover in 30 years  MCE: Integrate and correlate socioeconomic variables affecting deforestation and agricultural activities  Economic analysis of hydrological benefits of watersheds  Cost-benefit analysis of forest management transfer to communities  Evaluation of economic impacts from community-based ecotourism  Development of sustainable and cost- effective management scenarios DATA CONSOLIDATION

8. HURDLES AND AH-HAS  Difficulties: –Lack of data at communal and village level to refine planning process: need for RAP and RACE –Tamarin modeling needs to be adapted to the current Site de Conservation establishment process –Mechanism for transferring conservation benefits to downstream populations should be designed and implemented  Innovative and helpful analysis : –Analysis of risks of erosion –Contribution to the refining of preliminary forest zoning maps

9. ENGAGEMENT of STAKEHOLDERS Regional Development Committees  Authorities at provincial, regional and local level  Environment, Water and Forest departments  Local NGOs  Private sectors Local Communities and village Associations Information- concertation Communal Planning Regional Planning Decision-makingChefs de Region Platform of coordination Corridor Management Consolidation USAID Alliance