Poster presented at XIII World Forestry Congress. Buenos Aires (Argentina). 18 - 23 Oct 2009

García Fernandez, C.

Guambe, G.

Moura, I.

Ribeiro, A.

Ribeiro, N.

Rodrigues, A.

Rodrigues, J.C.

English

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Sustainable forest management of miombo woodlands in Niassa National Reserve, northern Mozambique: a multidisciplinary approach of fire resistance analysisSponsored by Fundo Nacional de Investigação, Ministery of Science and Technology of  Mozambique, Fundo Aberto (UEM, Mozambique) and CGIARIntroductionMiombo is the Swahili word for Brachystegia, a genus oftrees comprising a large number of species, ofteninterspersed with open savanna (40%), and wetlands(5%).It is the most important type of vegetation in southern Africa:  80% of rural households depend on it for land andproducts;Main source of highly valued timber and non- timberspecies;Global impact through emissions of trace gases fromfires, soils, vegetation and animals, and by sequestratingcarbon and biomass.Consequently: key role in the regional, and probablythe global, energy, water and carbon balances, but alsoin terms of rural development strategies.Study Site: Niassa National Reserve (NNR)NNR embodies the largest and most pristine conservation area of miombo woodlands in Southern Africa, being the largest and wildest conservation area of miombowoodlands in the world. MethodsSelected species: Brachystegia boehmii,Pseudolachnostylis maprouneifolia, Terminalia sericea,Pterocarpus angolensis and Burkea africanaField data Collection: phenotypic traits (height, barkthickness, leaves thickness, height of ramification, naturalregeneration) and genetic material (leaves and seeds) alongthe fire frequency gradientData analysis: Index of Importance Value (IIV) and DBH distribution Statistical t-test (5%) Lab germination tests (different according to species) DNA extraction Development of microsatellite markers (in progress)AimTo promote the sustainable management of miombowoodlands in NNRComponents:1. Fire monitoring and management;2. Genetic and phenotypic variability of selected species3. Tree resources availability and conservation (ex-situ and in-situ)Preliminary ResultsIndex of Importance Value B. boehmii (a typical miombo species) is better representedin the west (lower fire frequency) fire resistant species are better represented in the east sideof NNR (P.angolensis and T. sericea)Natasha Ribeiro1, Anabela Rodrigues2, José Carlos3, Isabel Moura3, Carmen Garcia-Fernandez4, Gisella Guambe1 and Ana Ribeiro31Faculdade de Agronomia e Engenharia Florestal, Maputo, Mozambique, 2Sociedade para a Gestão e Desenvolvimento da Reserva do Niassa, Mozambique,3Tropical Research Institute, Portugal, 4Bioversity International, CGIAR, ItalyIICTNatural regeneration B. boehmii is better represented in the west (< fire frequency)  P. angolensis and T. sericea (fire resistant species) have higher regeneration in the east (higher fire frequency)Seed germinationMechanical scarification significantly increased B. africana germination  T. sericea presents very low germination (0-6%)   seeds of P. angolensis removed from unburned fruits had higher germination percentageMolecular analysis020406080100120140B. bohemii P. angolensis B. africana P.maprouneifoliaT.sericeaIndex of Importance Value (IIV)EastWest211100332172715 1249050100150200250300B. bohemiiP. angolensisB. africanaP. maprouneifoliaT.serieceatotal number of individualsEastWestTable 1. Mean percentage germination of T. sericea, B. Africana and P. angolensis   Treatment Germination % (mean±s.d.) NR* NS/R** Control 6.25 ± 4.79 4 20 Chemical scarification 6.25 ± 2.50 4 20 Mechanical scarification 6.25 ± 4.79 4 20 T. sericea Dry heat 0.00 ± 0.00 4 20 Control 0.00 ± 0.00 2 17 B. africana Mechanical scarification 23.53 ± 0.00 2 17 Burned fruits 55.00 ± 7.07 2 10 P. angolensis Unburned fruits 80.00 1 10 *Number of replicates **Number of seeds per replicate Pseudolachnostylis maprouneifolia            Bukea africana       Terminalia sericea   Brachystegia bohemii   T. sericea: prMS-AC6AG5  ConclusionsWest side have better representation of miobo typical species at both adult and young stages GERMINATION The development of molecular markers  will be an important toll  to assess the genetic diversity among and between populations and to help the development of conservation strategies; DNA Extraction (Doyle  & Doyle 1990, modified)Microsatellite amplification (Gleen annd Schable, 2005) ReferencesDoyle JJ and Doyle JL (1990) A rapid total DNA preparation procedure for fresh plant tissue. Focus 12:13-15.Gleen TC and Schable NC (2005) Isolation Microsatelline DNA Loci. 

Sustainable forest management of miombo woodlands in Niassa National Reserve, northern Mozambique: a multidisciplinary approach of fire resistance analysis.

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Sustainable forest management of miombo woodlands in Niassa National Reserve, northern Mozambique: a multidisciplinary approach of fire resistance analysis.

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