CONTRIBUTION TO THE KNOWLEDGE OF TREE SPECIES
OF LAO PDR WITH IDAO SYSTEM
J. Prosperi, V. Lamxay, B.r. Ramesh, N. Ayyappan, J-M Bompard, S. Cardinal and
• Canopy forest biodiversity inventory Laos 2012-2015 • Francis Hallé
Remarkable rich biodiversity:
• One of 12 Mega-Hotspots: Region Indo Burma
• Temperate and tropical flora influences
• New species discovered regularly
BUT
• Little-knowledge on tropical Asia flora / fauna
• Reference books from the '50s • Fragmentary inventories
CONTRIBUTION TO THE KNOWLEDGE OF TREE SPECIES OF LAO PDR WITH IDAO SYSTEM
Objectifs
Know and make known its biological diversity that goes through:
• the participation in scientific expeditions
• the realization of plant identification tool IDAO • the contribution to reinforce training of young taxonomists and forest officers to preserve forests resources
CONTRIBUTION TO THE KNOWLEDGE OF TREE SPECIES OF LAO PDR WITH IDAO SYSTEM
Field work:
• Botanical data collection > 800 samples of which • More than 100 trees are studying as part of an
IDAO application
CONTRIBUTION TO THE KNOWLEDGE OF TREE SPECIES OF LAO PDR WITH IDAO SYSTEM
• To enrich the existing data base with new data from the Phou Hin Poun National Park
The difficulty encountered by non-botanists when identifying plants using standard flora is centered around three major constraints, namely:
• The ability to identify the species without its flowers or before it flowers; • The use of dichotomous key, which cannot tolerate any error and imposes
the choice as well as the order of questions; and
• Using drawings instead of technical jargon.
• Providing users the freedom to choose the character that needs to be described. • Permitting missing information or data, which allows the identification of incomplete
samples.
A software with a graphical and multimedia interface for:
• Tolerating a certain level of observational errors.
• Giving at each step of the identification
process a probability of resemblance for each species. Thus species are sorted by decreasing order of similarity
Palm Shrub Tree Grass Prostrate Liana Character : Habit Palm Shrub Tree Grass Prostrate Liana
Identikit data base Species Vector drawings Html data base
16 descriptors tables
Field work information
IDAO species data bases
Characters representation
Species descriptions
• Herbaria organisation – National Herbarium of Laos, Vientiane • Data base of botanical collections
• Preparation of duplicata
CONTRIBUTION TO THE KNOWLEDGE OF TREE SPECIES OF LAO PDR WITH IDAO SYSTEM
• 115 trees samples where analyzed, • 104 were identified at species level and • 11 at genus level.
• Euphorbiaceae (12%), Moraceae (6%),
Ebenaceae, Myrtaceae and Rubiaceae, (5%), and Fabaceae, Malvaceae and Meliaceae, (4%).
CONTRIBUTION TO THE KNOWLEDGE OF TREE SPECIES OF LAO PDR WITH
IDAO SYSTEM
• More than 19% of the
species are new records for
the country (of which 3
species are at cf. status)
• 2 species are expected to be
new species:
- Simaroubaceae tree from
dense lowland forest and
- Meliaceae tree from foothills
of the karst forest.
Genus Species Authors Family
1
Pseuduvaria rugosa (Blume) Merr. Annonaceae 2
Celtis philippensis Blanco Cannabaceae 3
Diospyros cf sumatrana Miq. Ebenaceae 4
Diospyros hasseltii Zoll. Ebenaceae 5
Diospyros pilosella Lecomte Ebenaceae 6
Antidesma velutinum Tul. Euphorbiaceae 7
Endospermum chinense Benth. Euphorbiaceae 8
Excoecaria oppositifolia Griff. Euphorbiaceae 9
Sumbaviopsis albicans (Blume) J.J. Sm. Euphorbiaceae 10
Cyclobalanopsis oxyodon (Miq.) Oerst. Fagaceae 11
Barringtonia racemosa (L.) Spreng Lecythidaceae 12
Memecylon chevalieri Guillaumin Melastomataceae 13
Dysoxylum grande Hiern Meliaceae 14
Ficus sundaica Blume Moraceae 15
Streblus macrophyllus Blume Moraceae 16
Knema furfuracea
(Hook.f. &
Thomson) Warb. Myristicaceae 17 Syzygium cf. oblatum (Roxb.) Wall. ex A.M.Cowan & Cowan Myrtaceae 18 Syzygium megacarpum (Craib) Rathakr.
& N.C.Nair Myrtaceae 19
Ziziphus cf. angustifolia
(Miq.) Hatus. ex
