Transcript Slide 1

Rare and Endangered plants of the
Okavango Delta Ramsar Site
Summary of work carried out by RBG Kew and Ecosurv Environmental Consultants
for the ODMP Project, 2006
Presentation by
Birgitta Farrington
Millennium Seed Bank Project, Botswana
for
Okavango Biodiversity Freshwater Expers meeting,
Maun, 24-27 2007
PROJECT BACKGROUND
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Commissioned by DFRR through the ODMP
Project
Duration: 6 Months (April – September 2006)
Limited budget (210 man days)
Approach – historical records, build on MSB
experiences + ground- truthing
Conservation assessments with help of GIS
PROJECT OUTPUTS
 20
plant species in need of
conservation measures identified
(RDL status)
 20
Species Action Plans
 Low
cost Monitoring Scheme
 Delta
Habitat classification
scheme
REPUBLIC
OF
BOTSWANA
Assessment of occurrence and distribution of
threatened and endangered plant species in the
Okavango Delta Ramsar Site
DRAFT FINAL REPORT
Wanted – alive!
Habenaria pasmithii
Prepared by
Ecosurv Environmental Consultants and
RBG Kew
September 2006
PROJECT OUTPUTS CONTD.
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Identification guide (Target, monitor,
identify)
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Seminar to train monitors
PROJECT AREA - Okavango
Delta Ramsar Site (ODRS)
CONSERVATION ASSESSMENTS BASED
ON IUCN CRITERIA
A) Reduction in population size
B) Restricted geographic range
C) Restricted population size plus decline
D) Very restricted population size or area of
occupancy
E) Quantitative analysis (modelling)
SOURCES OF INFORMATION
Databased specimens (K, GAB, PSUB)
Internet/literature searches
Field work
Expert opinion
GIS
INFORMATION DERIVED FROM GIS
WORK
Distribution information:
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Extent of Occurrence
Area of Occupancy
Subpopulations
Fragmentation
Locations
Extent and quality of habitat
Protected Areas
Elevation models
Human Footprint
Global Land Cover Characterization (habitats)
RDL SPECIES
FAMILY
ORCIDACEAE
ORCHIDACEAE
ORCHIDACEAE
GENUS
Zeuxine
Habenaria
Eulophia
SPECIES
africana
pasmithii
angolensis
Subsp.
LEGUMINOSAE
DROSERACEAE
POACEAE
Acacia
Aldrovanda
Eragrostis
hebeclada
chobiensis
vesiculosa
subglandulosa
Global
Local
En (region) Cr En
EN
EN
NT
EN
(region)
VU A3c
VU A3c
Cr En*
VU B
VU D2
VU D2 / DD
ASTERACEAE
ORCHIDACEAE
PEDALIACEAE
Erlangea
Ansellia
Harpagophytum
remifolia
africana
zeyheri
VU D2
VU
NT
VU D2
NT
NT
POACEAE
CAPPARACEAE
ORCHIDACEAE
Aristida
Boscia
Eulophia
stipitata
matabelensis
latilabris
spicata
LC
NT
LC
LC
LC
LC
PEDALIACEAE
POACEAE
POACEAE
CYPERACEAE
Harpagophytum
Oryzidium
Panicum
Pycreus
procumbens
barnardii
gilvum
okavangensis
procumbens
NA
LC
LC
LC
LC
LC
LC
LC
sublobatum
*Difficulty in calculating AOO prevents the use of these criteria as part of cirterion B, with
which the species could possibly be catagorised as critically endangered
DATA DEFICIENT SPECIES
FAMILY
LEGUMINOSAE
GENUS
Acacia
SPECIES
hebeclada
APOCYNACEAE
Adenium
boehmianum
CYPERACEAE
Eleocharis
cubangensis
POACEAE
ASCLEPIADACEAE
Eragrostis
Orbea
leptotricha
knobelii
Subsp.
tristis
Global
LC
DD
LC
DD
DD
DD
LC
DD
DD
Local
RDL Hotspot Map
Biodiversity Hotspot Map based on IUCN Threatened Plant Species
!
Shakawe
! Gumare
Maun
!
Relict Forests
Main Road
Secondary Road
Moremi Game Reserve
Ramsar Boundary
IUCN Rating Composite
High : 20
0
Low : 1
RBGKEW 2006
20
40
80
120
160
Kilometers
±
SPECIES OF SPECIAL WETLAND
INTEREST
Habenaria pasmithii (1984) EN (Ext)
Zeuxine africana (1983) CR EN
Eulophia angolensis (1983) EN
OTHER SPECIES OF MONITORING
INTEREST
 Acacia hebeclada subsp. chobiensis VU
 Aldrovanda vesiculosa VU
 Eulophia latilabris LC
 Pycreus okavangensis LC
 Eleocharis cubangensis DD
Eragrostis leptotricha (1981) DD
Eragrostis subglandulosa (1982) VU
Erlangea remifolia VU
As the Okavango Delta is very flat
- Orthophotos can help
determining habitat features
which are not obivious on the
ground
WHY Geomorphological /
hydrogeological terrain
classification ?
Means of adequately and consistently
describing the context (habitat)
Tolerance limits of the species can be
recognized
Adaptation of management/conservation
measures if habitat evolving beyond tolerance
levels
Prediction of new populations
Proposed RDL Monitoring
Framework for ODRS –
Institutional Setup
DE A
S OE R
reporting
MEA
reporting
Project Management
Unit
DFRR
Data Management and
T echnical Support Unit
E x situ
conservation
support
DA R, NHB G,
NTS C, V PRD,
M S B project
HOORC
F ield monitors
Concession holders, guides, communities,
individuals
DFRR (M aun)
DWA
DWNP
HOORC Researchers
NHB G
NM M A G
Other vegetation, botany and ecology projects
KEY RECOMMENDATIONS
Continued plant surveys in the ODRS
Implementation of Species Action Plans
 Continued assessment and monitoring of
RDL plant populations
 Seed banking
 Ex situ propagation
 Re-introduction, translocation and restoration