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Crambe wildpretii 

Scope: Global
Language: English
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Taxonomy [top]

Kingdom Phylum Class Order Family
Plantae Tracheophyta Magnoliopsida Capparales Cruciferae

Scientific Name: Crambe wildpretii Prina & Bramwell
Common Name(s):
Spanish Col de Risco
Taxonomic Notes: Crambe wildpretii Prina & Bramwell is a wild relative of the oil producing and fodder crop, C. abyssinica R. E. Fr., as well as being related to other brassica crops as a member of the subtribe Brassicinae (tribe Brassiceae) (Maxted et al. in prep.).

The species was recently described and it is possible that earlier records of C. gomerae relate to C. wildpretii.

Assessment Information [top]

Red List Category & Criteria: Critically Endangered C2a(i); D ver 3.1
Year Published: 2011
Date Assessed: 2010-04-16
Assessor(s): Santos Guerra, A.
Reviewer(s): Kell, S.P. & Nieto, A.
Contributor(s): Kell, S.P.
Justification:
Naranjo et al. (2008) recorded only 34 individuals of Crambe wildpretii, with 24 in one subpopulation and 10 in the other. There is a continuing decline in the number of mature individuals due to a decrease in the quality of the habitat caused by invasive species. It is also a very small and restricted population comprising less than 50 mature individuals. It is therefore assessed as Critically Endangered.

Geographic Range [top]

Range Description:C. wildpretii is endemic to La Gomera where it is found in the northwest of the island. Its area of occupancy (AOO) is less than 0.5 km2.
Countries occurrence:
Native:
Spain (Canary Is.)
Additional data:
Estimated area of occupancy (AOO) - km2:0-0.5
Lower elevation limit (metres):750
Upper elevation limit (metres):800
Range Map:Click here to open the map viewer and explore range.

Population [top]

Population:There are two subpopulations comprising 34 individuals (24 in one and 10 in the other) which are found within two 1x1 km grid squares (Naranjo et al. 2008).
Current Population Trend:Decreasing
Additional data:

Habitat and Ecology [top]

Habitat and Ecology:This perennial species grows on basaltic cliffs associated with the Erica and Myrica forest and dry scrubland.
Systems:Terrestrial
Continuing decline in area, extent and/or quality of habitat:Yes

Use and Trade [top]

Use and Trade: It is a wild relative of and potential gene donor to the oil producing and fodder crop, C. abyssinica, as well as being related to other brassica crops. This species is also used as a vegetable (USDA, ARS, National Genetic Resources Program 2010).

Threats [top]

Major Threat(s): It is threatened by grazing, local landslides, invasive species, such as Agave spp. and Opuntia spp., and in the past it has been affected by reafforestation with Pinus radiata.

Conservation Actions [top]

Conservation Actions: The genus Crambe is listed in Annex I of the International Treaty on Plant Genetic Resources for Food and Agriculture as part of the brassica complex.

C. wildpretii occurs within the Monumento Natural Lomo del Carretón (Naranjo et al. 2008).

No germplasm accessions are reported by EURISCO to be held in European genebanks (EURISCO Catalogue 2010) and it is not known whether the species has been collected and conserved ex situ in the Canary Islands (A. Santo Guerra pers. comm. 2010). A review of its ex situ conservation status is required and germplasm collection and duplicated ex situ storage should be carried out as necessary.

Classifications [top]

1. Forest -> 1.5. Forest - Subtropical/Tropical Dry
suitability:Suitable  major importance:Yes
3. Shrubland -> 3.5. Shrubland - Subtropical/Tropical Dry
suitability:Suitable  major importance:Yes
0. Root -> 6. Rocky areas (eg. inland cliffs, mountain peaks)
suitability:Suitable  major importance:Yes
2. Land/water management -> 2.2. Invasive/problematic species control
3. Species management -> 3.2. Species recovery
3. Species management -> 3.4. Ex-situ conservation -> 3.4.2. Genome resource bank

In-Place Research, Monitoring and Planning
In-Place Land/Water Protection and Management
  Occur in at least one PA:Yes
In-Place Species Management
  Subject to ex-situ conservation:Unknown
In-Place Education
2. Agriculture & aquaculture -> 2.2. Wood & pulp plantations -> 2.2.2. Agro-industry plantations
♦ timing:Past, Unlikely to Return ♦ scope:Minority (<50%) ♦ severity:Slow, Significant Declines ⇒ Impact score:Past Impact 
→ Stresses
  • 1. Ecosystem stresses -> 1.1. Ecosystem conversion
  • 2. Species Stresses -> 2.1. Species mortality
  • 2. Species Stresses -> 2.2. Species disturbance

2. Agriculture & aquaculture -> 2.3. Livestock farming & ranching -> 2.3.1. Nomadic grazing
♦ timing:Ongoing ♦ scope:Minority (<50%) ♦ severity:Slow, Significant Declines ⇒ Impact score:Low Impact: 5 
→ Stresses
  • 1. Ecosystem stresses -> 1.2. Ecosystem degradation
  • 2. Species Stresses -> 2.1. Species mortality
  • 2. Species Stresses -> 2.2. Species disturbance

8. Invasive and other problematic species, genes & diseases -> 8.1. Invasive non-native/alien species/diseases -> 8.1.2. Named species
♦ timing:Ongoing ♦ scope:Minority (<50%) ♦ severity:Slow, Significant Declines ⇒ Impact score:Low Impact: 5 
→ Stresses
  • 1. Ecosystem stresses -> 1.2. Ecosystem degradation
  • 2. Species Stresses -> 2.3. Indirect species effects -> 2.3.2. Competition

8. Invasive and other problematic species, genes & diseases -> 8.1. Invasive non-native/alien species/diseases -> 8.1.2. Named species
♦ timing:Ongoing ♦ scope:Minority (<50%) ♦ severity:Slow, Significant Declines ⇒ Impact score:Low Impact: 5 
→ Stresses
  • 1. Ecosystem stresses -> 1.2. Ecosystem degradation
  • 2. Species Stresses -> 2.3. Indirect species effects -> 2.3.2. Competition

1. Research -> 1.2. Population size, distribution & trends
2. Conservation Planning -> 2.2. Area-based Management Plan
3. Monitoring -> 3.1. Population trends

♦  Other (free text)

Bibliography [top]

Anthos. 2010. Information System of the plants of Spain. Real Jardín Botánico, CSIC – Fundación Biodiversidad. Available at: www.anthos.es.

EURISCO Catalogue. http://eurisco.ecpgr.org. (Accessed: September 2010).

IUCN. 2011. IUCN Red List of Threatened Species (ver. 2011.1). Available at: http://www.iucnredlist.org. (Accessed: 30 June 2017).

Izquierdo, I. Martín, J.L., Zurita, N. and Arechavaleta, M. (eds.). 2004. Lista de especies silvestres de Canarias (hongos, plantas y animales terrestres) 2004. Consejería de Medio Ambiente y Ordenación Territorial, Gobierno de Canarias.

Maxted, N., Dobbie, S.L. and Kell, S.P. In prep. Global priorities for crop wild relative conservation as a means of underpinning food security.

Naranjo, J., Mesa, R. and Oval, J.P. 2008. Crambe wildpretii Prina & Bramwell. In: Moreno, J.C. (coord.), Lista Roja 2008 de la flora vascular española. Dirección General de Medio Natural y Política Forestal (Ministerio de Medio Ambiente, y Medio Rural y Marino, y Sociedad Española de Biología de la Conservación de Plantas). Madrid.


Citation: Santos Guerra, A. 2011. Crambe wildpretii. The IUCN Red List of Threatened Species 2011: e.T180558A7647741. . Downloaded on 22 September 2017.
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