oai-hal-tel-00866277v1
type: Dataset
description: Currently loss and transformation of habitats are the main threats which cause the decrease of biological diversity. In Madagascar, 90% of plants species are endemic of the island and most of the plant formations types are at present strongly degraded or replaced by secondary formations resulting from human activities. Tapia woodland, dominated by the endemic tree Uapaca bojeri, is a sclerophyllous vegetation type limited in the Malagasy highlands. This vegetation type, adapted and resistant to the natural fire regime, is very fragmented today, covering a surface equivalent to 132 255ha on the island. In order to increase the protection of tapia woodland, a new protected area was established on Ibity massif. The current state of the woody vegetation is the result of the interaction of some factors as soil type, climate, human traditional practices and fire. Although fire is one of the phenomena that determine the dynamics of this vegetation, the current fire regime is also one of the main causes of degradation. The objective of this thesis is to study the role of fire on the demographic cycle and on some main processes for installation and recruitment. Thus, germination, plant phenology and seedlings resistance after burnt were studied. This research shows that the current problem of tapia woodland are 1) the reduction of flowering and fruiting by high fire frequencies; 2) the reduction of germination percent after seed exposure with high temperatures, and 3) high seedlings mortality after burnt, in particular when the quantity of fuel is raised. Installation and recruitment of woody species are limited by fire, which has a negative effect on natural regeneration. Fire management around the protected area is thus necessary for its conservation
identifier: NNT: 2012AVIG0323
issued: 2026-05-09T14:36:47.528523
language: fr
modified: 2026-05-09T14:36:47.528528
title: Evaluating the role of bush fires on the composition, structure, phenology, and resistance of tapia (Uapaca bojeri) woodland vegetation of Ibity massive, New Protected Area, for its sustainable management
contact point: Organization
  fn: CCSD
keyword: aire-protegee
keyword: bois-de-tapia
keyword: bush-fires
keyword: community-ecology
keyword: ecologie-des-communautes
keyword: feu-de-brousse
keyword: germination
keyword: infoeu-reposemanticsdoctoralthesis
keyword: protected-area
keyword: sdvsalife-sciences-q-bioagricultural-sciences
keyword: tapia-woodland
keyword: theses
landing page: https://theses.hal.science/tel-00866277

https://rec.harvest-normandie.data4citizen.com/dataset/oai-hal-tel-00866277v1/resource/dd01f358-caa6-4b4b-8778-5d5d0f13a9e4
type: Distribution
format: HTML
issued: 2026-05-09T14:36:47.531754
modified: 2026-05-09T14:36:47.514657
title: Evaluating the role of bush fires on the composition, structure, phenology, and resistance of tapia (Uapaca bojeri) woodland vegetation of Ibity massive, New Protected Area, for its sustainable management
access URL: https://theses.hal.science/tel-00866277

test_moissonnage_selune
type: Agent