the significance of georeferencing medicinal plant records
TRANSCRIPT
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The significance of georeferencing
medicinal plant records
Ya’qub Ebrahim South African National Biodiversity Institute
(Encephalartos caffer (http://pza.sanbi.org/encephalartos-caffer)
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Background
• Traditional medicine plays a huge role in SA and about 2000
recorded plant species are used for medicinal purposes
• Approximately a third used in local muthi markets
• 20% unsustainably sourced
• 42% listed as threatened with extinction
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• Southern Africa’s medicinal plant species are ever decreasing due
to over exploitation
• With the current rate of harvesting – plant supplies will decline
and many species will become extinct
• The need for conservation
Background Background
Rapanea melanophloeos(http://pza.sanbi.org/rapanea-melanophloeos)
Begonia dregei Otto & A.Dietr. (http://pza.sanbi.org/begonia-dregei)
Ansellia Africana (http://pza.sanbi.org/ansellia-africana)
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Approach
3 steps:
1. Manage species datasets and create database
2. Georeference species localities
3. Produce species distribution maps using ArcGIS
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Raw data and sorting
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Extracting unique values
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Database
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Geolocate
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Google Earth Pro
Cassipourea malosana (Baker) Alston (Pillarwood, common onionwood)(35000m difference).
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Georeferencing calculator
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Species distribution
South Africa
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Threatened and over-harvested
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Thank You!