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

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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/

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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!

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