Indigenous Management of Tapia Woodlands [Madagascar]
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- Update:
- Compiler: Unknown User
- Editor: –
- Reviewers: David Streiff, Fabian Ottiger, Alexandra Gavilano
technologies_1359 - Madagascar
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Expand all Collapse all1. General information
1.2 Contact details of resource persons and institutions involved in the assessment and documentation of the Technology
Key resource person(s)
SLM specialist:
Kull Christian
School of Geography and Environmental Science, Monash University
Australia
1.3 Conditions regarding the use of data documented through WOCAT
The compiler and key resource person(s) accept the conditions regarding the use of data documented through WOCAT:
Yes
2. Description of the SLM Technology
2.1 Short description of the Technology
Definition of the Technology:
For centuries, the population of the highlands of central and south-western Madagascar has sustainably managed and conserved the local tapia woodlands.
2.2 Detailed description of the Technology
Description:
These woodlands play an important economic role as a source of non-timber forest products (NTFP) such as wild silk, fruit, mushrooms, edible insects, and herbal medicines. Tapia trees (Uapaca bojeri) comprise up to 90% of all trees in these woodlands, bear an edible fruit, and their leaves nourish an endemic silkworm (landibe). Landibe silk is used to produce ritual burial shrouds throughout the highlands. Trading silk products and tapia fruits is a crucial source of cash income for the local communities. The tapia woodlands are maintained by the local villagers through burning and selective cutting. Burning favours the dominance of pyrophytic (fire-tolerant) tapia trees and protects silkworms from parasites. Selective cutting of non-tapia species and pruning of dead branches also favours tapia dominance and perhaps growth. Other common species include the endemic Sarcolaena eriophora and the invasive Pinus patula/khasya. The Tapia woodland is clearly an anthropogenically shaped forest. However, the creation and maintenance of the woodlands should be seen as positive transformation rather than a form of degradation.
Local and state-imposed regulations protect the woodlands from overexploitation. The Forest Service has placed restrictions on forest cutting and burning while allowing for traditional use rights. The collection of forest products is regulated through a type of common-property regime. For example, fuelwood collection is limited to dead trees or fallen branches. It is forbidden to break off large branches to access cocoons. Thanks to these protective regulations, forest boundaries are mostly stable, and woodland density has increased in several cases.
2.3 Photos of the Technology
2.5 Country/ region/ locations where the Technology has been applied and which are covered by this assessment
Country:
Madagascar
Region/ State/ Province:
Col des Tapia
Further specification of location:
Antsirabe and Ambositra
Specify the spread of the Technology:
- evenly spread over an area
If the Technology is evenly spread over an area, specify area covered (in km2):
2600.0
Comments:
Total area covered by the SLM Technology is 2600 km2.
Map
×2.6 Date of implementation
If precise year is not known, indicate approximate date:
- more than 50 years ago (traditional)
2.7 Introduction of the Technology
Specify how the Technology was introduced:
- as part of a traditional system (> 50 years)
3. Classification of the SLM Technology
3.1 Main purpose(s) of the Technology
- conserve ecosystem
- create beneficial economic impact
3.2 Current land use type(s) where the Technology is applied
Land use mixed within the same land unit:
Yes
Specify mixed land use (crops/ grazing/ trees):
- Silvo-pastoralism
Grazing land
Forest/ woodlands
- (Semi-)natural forests/ woodlands
- Sustainable forest management
(Semi-)natural forests/ woodlands: Specify management type:
- Selective felling
Products and services:
- Timber
- Fuelwood
- Fruits and nuts
- Other forest products
- Grazing/ browsing
Comments:
Major land use problems (land users’ perception): Reduction of vegetation cover; Quantity biomass decline
Selective felling of (semi-) natural forests: Yes
Other type of forest: sustainable forest management
Forest products and services: fuelwood, fruits and nuts, other forest products / uses (honey, medical, etc.)
3.5 SLM group to which the Technology belongs
- natural and semi-natural forest management
- beekeeping, aquaculture, poultry, rabbit farming, silkworm farming, etc.
3.6 SLM measures comprising the Technology
management measures
- M2: Change of management/ intensity level
Comments:
Main measures: management measures
3.7 Main types of land degradation addressed by the Technology
biological degradation
- Bc: reduction of vegetation cover
- Bq: quantity/ biomass decline
Comments:
Main type of degradation addressed: Bc: reduction of vegetation cover, Bq: quantity / biomass decline
3.8 Prevention, reduction, or restoration of land degradation
Specify the goal of the Technology with regard to land degradation:
- prevent land degradation
- reduce land degradation
Comments:
Main goals: prevention of land degradation, mitigation / reduction of land degradation
4. Technical specifications, implementation activities, inputs, and costs
4.1 Technical drawing of the Technology
Technical specifications (related to technical drawing):
Technical knowledge required for field staff / advisors: (traditional practice)
Technical knowledge required for land users: low (children often harvest fruit; silk cocoon harvest is easy)
Main technical functions: control of raindrop splash, improvement of ground cover, stabilisation of soil (eg by tree roots against land slides), increase in organic matter, increase of biomass (quantity), promotion of vegetation species and varieties (quality, eg palatable fodder), control of fires, spatial arrangement and diversification of land use
Change of land use practices / intensity level: The tapia woodlands are maintained by the local villagers through burning and selective cutting
4.2 General information regarding the calculation of inputs and costs
Specify currency used for cost calculations:
- USD
4.3 Establishment activities
Activity | Timing (season) | |
---|---|---|
1. | N |
4.5 Maintenance/ recurrent activities
Activity | Timing/ frequency | |
---|---|---|
1. | Selective cutting of non-tapia species, especially invasive pines | |
2. | Pruning of dead branches | |
3. | Controlled burning mainly through understory fires after the rainy season | Jan-May |
4. | Collection of non-wood forest products such as fruits, medicinal plants, mushrooms, berries, insects, and hunting of mammals etc | Sept.-Dec |
5. | Collection of landibe silkworm twice a year. The cocoons are cooked, spun and woven into silk fabric | Nov-Dec and May-June |
4.6 Costs and inputs needed for maintenance/ recurrent activities (per year)
Specify input | Unit | Quantity | Costs per Unit | Total costs per input | % of costs borne by land users | |
---|---|---|---|---|---|---|
Labour | Labour | ha | 1.0 | 20.0 | 20.0 | 100.0 |
Total costs for maintenance of the Technology | 20.0 | |||||
Total costs for maintenance of the Technology in USD | 20.0 |
Comments:
Traditional method; no establishment phase and costs.
4.7 Most important factors affecting the costs
Describe the most determinate factors affecting the costs:
The estimation of costs is difficult - fruit are gathered over a two month period by school children going out for an hour in the early morning each day; the silkworms are collected by individuals (usually experienced collectors) on free days. In some areas, projects exist that run silkworm nurseries, establish firebreaks in the woodlands, grow and plant tapia seedlings, and finance the purchase of silk looms. These projects obviously require much larger budgets.
5. Natural and human environment
5.1 Climate
Annual rainfall
- < 250 mm
- 251-500 mm
- 501-750 mm
- 751-1,000 mm
- 1,001-1,500 mm
- 1,501-2,000 mm
- 2,001-3,000 mm
- 3,001-4,000 mm
- > 4,000 mm
Specifications/ comments on rainfall:
7 months of dry season
Agro-climatic zone
- sub-humid
Thermal climate class: tropics
5.2 Topography
Slopes on average:
- flat (0-2%)
- gentle (3-5%)
- moderate (6-10%)
- rolling (11-15%)
- hilly (16-30%)
- steep (31-60%)
- very steep (>60%)
Landforms:
- plateau/plains
- ridges
- mountain slopes
- hill slopes
- footslopes
- valley floors
Altitudinal zone:
- 0-100 m a.s.l.
- 101-500 m a.s.l.
- 501-1,000 m a.s.l.
- 1,001-1,500 m a.s.l.
- 1,501-2,000 m a.s.l.
- 2,001-2,500 m a.s.l.
- 2,501-3,000 m a.s.l.
- 3,001-4,000 m a.s.l.
- > 4,000 m a.s.l.
Comments and further specifications on topography:
Slopes on average: hilly (16-30%), steep (31-60%), very steep (>60%)
Altitudinal zones: 500-2000 m a.s.l.
5.3 Soils
Soil depth on average:
- very shallow (0-20 cm)
- shallow (21-50 cm)
- moderately deep (51-80 cm)
- deep (81-120 cm)
- very deep (> 120 cm)
Soil texture (topsoil):
- coarse/ light (sandy)
Topsoil organic matter:
- low (<1%)
If available, attach full soil description or specify the available information, e.g. soil type, soil PH/ acidity, Cation Exchange Capacity, nitrogen, salinity etc.
Soil texture is coarse/light (sandy) (silica-rich soils compared to the main lateritic soils of highland Madagascar)
Soil fertility is low ( mostly nutrient-poor or rocky soils )
Soil drainage/infiltration is good
5.6 Characteristics of land users applying the Technology
Market orientation of production system:
- subsistence (self-supply)
- mixed (subsistence/ commercial)
Indicate other relevant characteristics of the land users:
Land users applying the Technology are mainly disadvantaged land users
Difference in the involvement of women and men: Population density: 20-40 persons/ km2 in the central highlands and 10-20 in the western highlands
5.7 Average area of land used by land users applying the Technology
- < 0.5 ha
- 0.5-1 ha
- 1-2 ha
- 2-5 ha
- 5-15 ha
- 15-50 ha
- 50-100 ha
- 100-500 ha
- 500-1,000 ha
- 1,000-10,000 ha
- > 10,000 ha
Is this considered small-, medium- or large-scale (referring to local context)?
- small-scale
5.8 Land ownership, land use rights, and water use rights
Land ownership:
- state
Land use rights:
- communal (organized)
Comments:
Woodlands are officially state-owned, but in practice managed by neighbouring communities (either unofficially, or increasingly through community-based management contracts
6. Impacts and concluding statements
6.1 On-site impacts the Technology has shown
Socio-economic impacts
Production
wood production
Comments/ specify:
Stable supply of fuelwood
Income and costs
farm income
Comments/ specify:
Through selling silk-fabrics and other NTFP
Other socio-economic impacts
Production of NTFP as important dietary supplements
Provision of medicinal plants
Socio-cultural impacts
food security/ self-sufficiency
Comments/ specify:
Thorugh the forest products
cultural opportunities
Comments/ specify:
Sacred forest
Ecological impacts
Soil
soil cover
soil loss
Biodiversity: vegetation, animals
biomass/ above ground C
plant diversity
Comments/ specify:
Endemic biodiversity
6.3 Exposure and sensitivity of the Technology to gradual climate change and climate-related extremes/ disasters (as perceived by land users)
Comments:
Silk and fruit harvests vary from season to season but drivers are poorly understood (could include precipitation and temperature)
6.4 Cost-benefit analysis
How do the benefits compare with the maintenance/ recurrent costs (from land users' perspective)?
Short-term returns:
positive
Long-term returns:
positive
Comments:
The larger rainy season silk harvest provides crucial cash income during the meagre months before the rice harvest. In 1998 the price of 200 cocoons was between US$ 0.10-0.15. For a basket of Tapia fruits villagers earned between 0.02-0.06 US$/ kg. During
6.5 Adoption of the Technology
Comments:
Comments on adoption trend: see Annex 3
6.7 Strengths/ advantages/ opportunities of the Technology
Strengths/ advantages/ opportunities in the compiler’s or other key resource person’s view |
---|
Thanks to these protective regulations, forest boundaries are mostly stable, and woodland density has increased in several cases |
La vente des produits en soie et des fruits de Tapia est une source de revenus capitale pour les communautés locales |
6.8 Weaknesses/ disadvantages/ risks of the Technology and ways of overcoming them
Weaknesses/ disadvantages/ risks in the compiler’s or other key resource person’s view | How can they be overcome? |
---|---|
Partly individual indiscriminate cutting and/or strong use of fires leads to overuse of the forest resources | needs clear regulations, guidelines and observation of the rules by the local authorities as well as awareness raising about the multiple benefits of the forests. As long as the communities continue to be interested in the forests and its products, they will protect it from destructive cutting. |
Invasion of exotic tree species such as pine and eucalyptus from private and village woodlots | the forest service has rightly been encouraging communities to cut these trees from the tapia forests without the need for complicated permits. |
Insecure land use rights | in 1996 a new legislation opened the way to officially decentralize management of state-owned renewable natural resources to adjacent communities, which would aid woodland protection by increasing stakeholder involvement. |
In some areas, silkworm populations have been very low for decades | recent projects seek to establish silk nurseries and reintroduce the worm |
7. References and links
7.2 References to available publications
Title, author, year, ISBN:
Kull CA (2002): The ‘Degraded’ Tapia Woodlands of Highland Madagascar: Rural Economy, Fire Ecology, and Forest Conservation. Journal of Cultural Geography Spring/ Summer 2002.
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