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Identifying conservation priorities for crop wild relatives
Nora P. Castañeda-Álvarez, Colin K. Khoury, Harold A. Achicanoy, Vivian Bernau, Hannes Dempewolf, Ruth J. Eastwood, Luigi Guarino, Ruth H. Harker, Andy Jarvis, Nigel Maxted, Jonas V. Müller, Julian Ramirez-Villegas, Chrystian C. Sosa, Paul C. Struik, Holly
Vincent, & Jane Toll
Sola
num
laxi
ssim
um. C
redi
t: St
ef d
e Ha
an
Ex situ conservation of CWR
Ex situ conservation of CWR
CWR in genebanks: How much is enough?
How much is enough? Our process
Density of seed collections
Areas where gaps exist in ex situ collections for multiple taxa
Density of records
Ramírez-Villegas, J., Khoury, C., Jarvis, A., Debouck, D.G., Guarino, L., 2010. A gap analysis methodology for collecting crop genepools: A case study with Phaseolus beans. PLoS ONE 5, e13497.
Determine gaps in collections
Model distributions
Gather taxonomic data
Gather occurrence
data
Make collecting recommendations
Georeferencing
TaxonomicGeographicEcological
How much is enough? Our process
Our processDefinition of crops and crop wild relative taxa to analyze:• 81 crop genepools globally important for food security.• 1079 crop wild relative taxa (GP1 and GP2 + less closely related taxa with
proven and potential uses in breeding)
Vincent, H. et al. Biological conservation. 167, 265-275 (2013)
Our processGathering and curating occurrence data from 420 data sources• Data quality check
Our processModelling the distribution of CWR• MaxEnt: modelling algorithm
• 19 climatic variables• 5 x 5km resolution• Native range of each taxa
Measuring 3 gap analysis metrics• Sampling Representativeness Score• Geographic Representativeness Score• Ecological Representativeness Score
Identifying collecting and conservation priorities
Picture credit: https://scienceasaverb.wordpress.com/2010/10/29/introduction-to-ecological-niche-modeling-environmental-niche-modeling-species-distribution-modeling-part-two-what-is-niche-modeling/
Our process
http://www.cwrdiversity.org/
11
Our results: Collecting hotspotsGlobal collecting hotspots for High Priority Taxa, for 76 crop gene pools
Priorities for conservation
12
High priority
taxa
for c
ollecti
on
Mid priority
taxa
for c
ollecti
on
Low prio
rity t
axa fo
r colle
ction
No furth
er colle
ction is
required
0100200300400500600700800900
No.
of C
WR
taxa
71%
13% 12%5%
Broom milletFinger milletQuinoaRiceMaize
Foxtail milletOat
BarleyFoxtail milletRyeWheat
Finger milletPearl milletRiceSorghum
Foxtail milletPearl milletRiceSorghum
BeanLima Bean Bambara groundnut
CowpeaGrasspea
GrasspeaLentilPeaChickpeaVetch
Adzuki beanMung beanPigeonpeaUrd bean
• CWR inventory• Occurrence dataset• Gap analysis results
http://www.cwrdiversity.org/resources/
Our products
Conservation priorities for crop wild relatives
Thank you!
S. la
xiss
imum
(wild
rela
tive
of p
otat
o). C
redi
t: St
ef d
e Ha
an