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SEB 2013 Diana Quiroz

Annual meeting of the Society for Economic Botany. University of Plymouth. Presentation of June 30th, 2013
by

diana quiroz

on 1 October 2013

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Transcript of SEB 2013 Diana Quiroz

West African plant use has been documented, but...
... medicinal plant trade remains understudied
Existing studies on
medicinal plant markets:
Focus on
few species
Locally
available
Importance of herbal medicine
Background
Benin
Hypothesis
Animist beliefs (Vodoun, Orisha) official religions
A large medicinal plant market
Benin’s markets are smaller and less diverse than those of Ghana, and their products are meant mostly for use within a spiritual context.
Research Questions
1. Which plant species are commercialised in Benin for medicinal purposes?
Methods
Standard botanical methods
Statistical analysis
Quantitative market survey
Study area

Recorded plant products and the amount of sales units offered for sale
Weighed plant products
Estimated the volume of additional stock
Extrapolated data to the entire market
Asked vendors to indicate weekly sales
Results
Top selling-products
Markets' floristic diversity
Market's floristic diversity
Salient health concerns
Sales and volumes
Visited herbal markets of Benin's seven largest urban centers


Bought plants until familiarized with products sold
Non-Timber Forest Products
Dr. Aristide Adomou
Innocent Essou
Nicaise Deguenonvo
Ange Agbehounkpan
Prisca Agognon
Prof. Pieter Baas
Dr. Barbara Gravendeel
Sofie Ruysschaert
Dr. Angeles Villarreal-Reyna

Acknowledgments
Herbier National
du Bénin

Good?
Bad?
Photo: http://www.trust.org/item/20130521135301-a59fv/
Photo: Sofie Ruysschaert
Photo: http://www.palmwatchafrica.org/tag/cifor/
Photo: Diana Quiroz
Photo: http://worldagroforestry.org/transformations/issue-16-march-2012
"A high proportion (70 to 80%) of the world population uses medicinal plants or consults traditional practitioners for their primary healthcare (Cunningham, 1993; Olsen, 2005; Pei, 2001)".
Vodouhê et al., 2008. Medicinal plant commercialization in Benin: An analysis of profit distribution equity across supply chain actors and its effect on the sustainable use of harvested species. J Med Plants Res 2, 331-340
"According to the World Health Organization (WHO), more than 80% of the world’s population relies on traditional herbal medicine for their primary healthy care needs (Inglis, 1994)"
Pei S. (2001). Ethnobotanical Approaches of traditional medicine studies: some experiences from Asia. Pharm. Bot. 39: 74-79
Surveyed 22 market stalls in 16
different markets
Verifying sufficient sample effort: Sample-based rarefaction curves (EstimateS version 8.2 (Colwell, 2010)
Proving if Benin's market is smaller and less diverse than Ghana's (Van Andel et al. 2012): Mann-Whitney U test (SPSS version 20.0 (IBM Corp., 2011)
Inglis, J. T. 1994. Introduction. Nature and Resources. Vol 30: 1.
NO MENTION OF WHO STATISTICS
NONETHELESS, most authors agree on the chief preference or reliance on herbal treatments by a wide range of peoples throughout the world (Mafimisebi and Oguntade, 2010; Magassouba et al., 2007; Williams et al., 2013).
1. Beninese markets sell mostly ritual plants
52,632 kg
of daily herbal medicine stock in Benin
w
ith a
n
economic value of
303,541 USD (212,528 €)
We found
226 plant products
corresponding to
203 species
Assessing correlations between plant species and the stalls characteristics: Redundancy analysis (Canoco for Windows version 5 (Ter Braak and Smilauer, 2012)
Photo: Diana Quiroz
http://ngm.nationalgeographic.com/visions-of-earth/visions-earth-2013#/
Anhuf et al., 2006.
Benin's medicinal flora: 530 - 550 spp (CENPREBAF, 1999; Schmelzer and Gur
i
b-Fakim, 2008)
Total covered in this survey: 38%
West-Africa
Benin
Plant species sold at greatest stock
Specialization of market stalls according to species sold
Annual sales of
655.25

tonnes
o
f plant material
w
orth
2,553,720 USD

(1,915,160 €)
Conclusions
2. Benin's markets are smaller than those of Ghana, but they are also more diverse

3. Ten plant species high in demand and with a certain threat status may have sustainability issues

4. Markets stalls are different in size, but sell mostly the same species
Plant use
Purchased market
plants
Herbarium
identification
Pressed them
into herbarium
vouchers
Matched infertile
samples in the field
Photo: Tinde van Andel
2. What is the percentage of the total medicinal flora?
3. What are the volumes and annual value of commercialized plant species?
4. Which are the species in highest demand?
5. What are the most salient health issues covered in the market?
6. Do markets throughout the country show similar floristic diversity?
7. How much different are Beninese markets from Ghanaian ones?
Species-accumulation curve
Full transcript