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2. Profiles of Tree Species: The Americas 157
Balfourodendron riedelianum
Rutaceae
pau-marfim, guatambú, guatambú
blanco, yvyrá ñeti Distribution
Argentina, Brazil (Paraná, Rio Grande do Sul, Santa Catarina,
São Paulo), Paraguay Habitat
A common species of lowland rainforest along the banks of the
Paraná and Uruguay river systems in Brazil and Paraguay (Ortega
Torres et al.,
1989). It also extends into cerrado and secondary forest with Aspidosperma
polyneuron (FAO, 1986).
Population Status and Trends
The species has become scarce in places because of overexploitation
of the timber and deforestation, but it is still reported to occur
in abundance in a large part of its range. The genus is under taxonomic review
(Americas Regional Workshop, 1996). Role
of species in the Ecosystem An important component
of high forest with deep soil (Ortega Torres et
al., 1989). Threats
Commercial overexploitation, habitat conversion. Utilisation
The timber is used in furniture-making, flooring, cabinetwork
and turnery (Flynn, 1994). It is also used in construction work (FAO,
1986). The wood is elegant but not durable (Ortega Torres et
al., 1989). Trade
The main use of the timber is domestic. It is relatively inexpensive
in U.S.A. when compared with other imported species (Flynn,
1994). IUCN Conservation category
EN A1acd+2cd according to the Americas
Regional Workshop for the WCMC/SSC Conservation
and sustainable
management of trees project
(WCMC, 1996).
Conservation Measures Forest
Management and Silviculture The species has a
great affinity for mixed planting. Various trials have taken place. An average
height of 21.2m and DBH of 20.5cm have been attained
in trees of 26 years and an average height of 10.96m has been recorded from trees
of 14 years. References
Americas Regional Workshop. 1996. Discussions held at CATIE,
Costa Rica, November 1996 at the Second Regional Workshop
of the WCMC/SSC Conservation
and Sustainable
Management of
Trees project. (Unpublished). Chudnoff,
M. 1984. Tropical timbers
of the
world. Forest Products Laboratory Madison, Wisconsin:
United States Department of Agriculture. 464pp.
FAO Forestry Department. 1986. Databook
on endangered
tree and
shrub species
and their
provenances. Rome: FAO. 524pp. Flynn,
J.H. 1994. A guide
to useful
woods of
the world.
King Publishing Co, Maine, U.S.A. 382pp. Harcourt, C.S.
& J.A. Sayer. (eds.). 1996. The
conservation atlas
of tropical
forest: the
Americas. Simon & Schuster, Singapore.
Ortega Torres, E., L. Stutz de Ortega & R. Spichiger. 1989.
Noventa especies
forestales del
Paraguay. Flora del Paraguay. Conservatoire
et Jardin Botaniques de la Ville de Genève & Missouri Botanical Garden.
WCMC. 1996. Report of the Second Regional Workshop, held at
CATIE, Turrialba, Costa Rica, 18-20 November 1996. Conservation
and sustainable management of trees project.
(unpublished).