Research Article
VascularTissueAnalysisasaDecisiveToolforTropicalHardwood
Identification:TheCaseStudyofEkopSpeciesinCameroon
PierrePaulMbarga ,
1
ArmandWilliamMala,
2
andMarieMargueriteMbolo
2
1
IRAD’s Multipurpose Station, P.O. Box 592, Abong Mbang, Cameroon
2
University of Yaound´ e I, Faculty of Sciences, Department of Plant Biology, P.O. Box 337, Yaound´ e, Cameroon
Correspondence should be addressed to Pierre Paul Mbarga; pierrepaul.mbarga@gmail.com
Received 19 January 2020; Accepted 12 March 2020; Published 8 April 2020
Academic Editor: Qing-Lai Dang
Copyright©2020PierrePaulMbargaetal.isisanopenaccessarticledistributedundertheCreativeCommonsAttribution
License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is
properly cited.
eperforationplatesandvessel-raypittingoftropicalhardwoodsaretypicalfeaturesthatmakeitpossibletomarkspecieswithin
a botanical family. is study aims to bring out a consistent and robust framework for a clear distinction through anatomical
features among various Ekop woods based on usual nomenclature on trade. Perforations plates and vessel-ray pitting are
determiningcomponentsfortheclassificationofthespecies.Indeed,severalspeciesexploitedunderthetradenameEkopbecause
oftheirgrain,color,andwoodendecorationpatternsdonotbelongtothesametaxonomicclass.Withthenaturalstructureofcells
and their intervessel pits observed in xylem and phloem, it appears that the perforation plates and the vessel-ray pitting are
decisive components for the classification of Ekop species. Forty-three wood specimens of Ekop were collected from forests in
Ebolowa, Mbalmayo, and Abong Mbang. In addition, 155 microscopic sections of Ekop slides with at least 3 representatives of
identified species were observed. us, macroscopic observations through a hand magnifying glass were performed on wood
carrots.en,themicroscopicsectionsofslidesinthefirst63featuresoftheInternationalAssociationofWoodAnatomistslist
wereanalyzed.Correlationswereobservedbetweenvesselselementsandothermainfeaturesthroughcomponentanalysis.Four
groups of Ekop were differentiated by gathering in each genus a matrix of similar features across their vessels groupings,
perforation plates, and vessel-ray pittings. A tabular key was used to further define the identity of the Ekop species. is study
makesitpossibletorecognizeEkopwoodbeyondthedendrologicalaspectsofvegetativeandreproductiveorgans.Finally,afew
typical features used for a precise demarcation were identified, for a taxonomic classification within the Ekop group.
1.Introduction
According to ITTO [1], timber production in tropical Africa
increased from 2012 to 2017 reaching 6.7 million m
3
in 2015.
Cameroonwasthethirdlargestexporteroftropicaltimberand
thefirstproducerintropicalAfricawith1.2millionm
3
in2015
[2]. is trend was accentuated with the allocation of logging
concessions to Asians, who were interested in other little
knowntimbersduringtheperiod2004to2012.us,speciesin
the decline like Ekop have benefitted from the favorable trade
opportunities. erefore, the revaluation of their free board
taxable value reaching 85,450 CFAF (131 Euros)/m
3
has in-
creased the price of some high timber species [3].
Five species, including Tetraberlinia bifoliata
(25,000m
3
), accounted for 72% of total log exports in
Cameroon. Among them, 10 Ekop species represented
19.23% of the total volume during 2015 and 2016 with
Julbernadia pellegriniana (12%), Brachystegia cynometroides
(5.5%), and other Ekop species (1.73%) of export logs
appearing on national statistics [3].
e name Ekop comes from Bantu’s ethnic languages
covering the Fang-Beti-Bulu cultural area and is used by
forest timber prospectors in South and Center regions. e
practices of ethnotaxonomy among the people of Center-
South Cameroon are based on a rich heritage with a
knowledge of the useful plants that have not been formally
codified [4].
Letouzey and Mouranche [5] chose the pronunciation
Ekop (read Ekaup) from native forest timber prospectors to
signify a group of trees identifiable by a common external
Hindawi
International Journal of Forestry Research
Volume 2020, Article ID 6387369, 7 pages
https://doi.org/10.1155/2020/6387369