Transcript mantadia- zahamena

MANTADIA- ZAHAMENA
CONTEXT OF ZAHAMENA-MANTADIA
Corridor area: 540,000 ha
No. Population: ~800,000
Population density:
46 inhabitants/ km2
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
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
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 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
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
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
DATA LAYERS
Watersheds
Protected areas
Land use
Population density
and forest cover
Mining
Roads
Vulnerable sites
MCE Analysis
DEM
Core Conservation
sites
DATA CONSOLIDATION
 Business-As-Usual : Cellular Automata
600
$
$
650
700
Ambatomainty
$
$
Algorithm projects forest cover in 30 years
$
$
$
$
$
$
$
$
$
$
#
$
Vavatenina
Ambodimanga
950
 MCE: Integrate and correlate
$
$
$
$
#
Amparafaravola
$
$
socioeconomic variables affecting
$
Manakambahiny
Atsinanana
$
$
$
$
$
Ambatondrazaka
#
$
deforestation and agricultural activities
$
$
$
 Economic analysis of hydrological benefits
$
Didy
$
900
$
$
Sahaviavy-Fito
$
$
$
of watersheds
$
$
 Cost-benefit analysis of forest management
$
$
$
$
$
$
$
$
$
$
#
Délim itation corridor
Zaha me na - Ma nta dia
Brickaville
$
$
$
Typologie des risques
de dégra dation des sols
Dég ra dation
$
de sol
né glige able
$
$
Très faib le risqu e de d égrada tion
Ranomafana
Faible risque d e dé gra da tio n
Mo ye n risqu e de d égrada tion
Fort risq ue de d ég rad ation
Très fort risq ue d e dég ra dation
No D ata
$
$ Che f-L ieu-commun e
$
$
Moramanga
#
$
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Beforona
$
$
effective management scenarios
#
$
Che f-L ieu-Fivond ro nan a
Rou
te nation ale
$
$
0
$
25
50 Km
750
 Development of sustainable and cost-
$
$
800
community-based ecotourism
$
$
transfer to communities
 Evaluation of economic impacts from
850
Amboasary-Gara
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
ENGAGEMENT of STAKEHOLDERS
Chefs de Region
Platform of coordination
Corridor Management
USAID
Alliance
Decision-making
Consolidation
Regional Development Committees
Regional Planning
 Authorities at provincial,
regional and local level
Communal Planning
 Environment, Water and
Forest departments
 Local NGOs
 Private sectors
Local Communities and village
Associations
Information- concertation