Taxonomy [top]

Kingdom Phylum Class Order Family
Plantae Tracheophyta Magnoliopsida Caryophyllales Cactaceae

Scientific Name: Micranthocereus streckeri
Species Authority: Van Heek & Van Criek.
Taxonomic Source(s): Hunt, D., Taylor, N. and Charles, G. (compilers and editors). 2006. The New Cactus Lexicon. dh Books, Milborne Port, UK.

Assessment Information [top]

Red List Category & Criteria: Critically Endangered B1ab(iii) ver 3.1
Year Published: 2013
Date Assessed: 2010-06-03
Assessor(s): Machado, M., Braun, P., Taylor, N.P. & Zappi, D.
Reviewer(s): Goettsch, B.K. & Superina, M.
Facilitator/Compiler(s): Bilz, M.
Micranthocereus streckeri has a very restricted range. It is known from a single location in Bahia, Brazil, where its total extent of occurrence is no more than 100 km2. The population is declining due to factors that are known, but have not ceased. The species is therefore listed as Critically Endangered.
Previously published Red List assessments:
2002 Critically Endangered (CR)

Geographic Range [top]

Range Description:Micranthocereus steckeri is restricted to the west of Seabra in central Bahia, Brazil. It is only known from one site, where it grows at elevations of 800 to 1,250 m asl.
Countries occurrence:
Brazil (Bahia)
Number of Locations:1
Lower elevation limit (metres):800
Upper elevation limit (metres):1250
Range Map:Click here to open the map viewer and explore range.

Population [top]

Population:The number of mature individuals is between 250 and 1,000, with all individuals in one subpopulation. The population trend is slightly decreasing due to deforestation, fire, and recreational activities.
Current Population Trend:Decreasing
Additional data:
Number of mature individuals:250-1000
No. of subpopulations:1
All individuals in one subpopulation:Yes

Habitat and Ecology [top]

Habitat and Ecology:The species is a northern campo rupestre element, where it grows on rocks and quartz gravel and sand (Taylor and Zappi 2004). It has a generation length of 10 to 15 years.
Continuing decline in area, extent and/or quality of habitat:Yes
Generation Length (years):10-15

Use and Trade [top]

Use and Trade: The seeds are collected for ornamental use.

Threats [top]

Major Threat(s): The habitat of this cactus is being altered, as it is above a main highway (Taylor and Zappi 2004). There is a religious site within the species' range, and the species is negatively affected by the people frequenting the site as well as by clearing of vegetation for improved access. Logging and fires are additional threats in the area, while collection of plants and seeds is considered to be a minor threat.

Conservation Actions [top]

Conservation Actions: The species is not protected in any way. The site where it grows is used for religious pilgrimage, and a complete habitat conversion might therefore be unlikely. It is recommended to protect this site and to monitor the populations.

Classifications [top]

2. Savanna -> 2.1. Savanna - Dry
suitability: Suitable  
0. Root -> 6. Rocky areas (eg. inland cliffs, mountain peaks)
suitability: Suitable  
1. Land/water protection -> 1.1. Site/area protection

In-Place Research, Monitoring and Planning
In-Place Land/Water Protection and Management
  Occur in at least one PA:No
In-Place Species Management
In-Place Education
  Included in international legislation:Yes
  Subject to any international management/trade controls:Yes
5. Biological resource use -> 5.2. Gathering terrestrial plants -> 5.2.1. Intentional use (species is the target)
♦ timing: Ongoing    
→ Stresses
  • 2. Species Stresses -> 2.1. Species mortality

5. Biological resource use -> 5.3. Logging & wood harvesting -> 5.3.3. Unintentional effects: (subsistence/small scale)
♦ timing: Ongoing    
→ Stresses
  • 1. Ecosystem stresses -> 1.2. Ecosystem degradation

6. Human intrusions & disturbance -> 6.1. Recreational activities
♦ timing: Ongoing    
→ Stresses
  • 1. Ecosystem stresses -> 1.2. Ecosystem degradation

7. Natural system modifications -> 7.1. Fire & fire suppression -> 7.1.1. Increase in fire frequency/intensity
♦ timing: Ongoing    
→ Stresses
  • 2. Species Stresses -> 2.2. Species disturbance
  • 2. Species Stresses -> 2.3. Indirect species effects -> 2.3.8. Other

3. Monitoring -> 3.1. Population trends

♦  Pets/display animals, horticulture
 Local : ✓ 

Bibliography [top]

IUCN. 2013. IUCN Red List of Threatened Species (ver. 2013.1). Available at: (Accessed: 12 June 2013).

Taylor, N.P. and Zappi, D.C. 2004. Cacti of Eastern Brazil. Royal Botanic Gardens, Kew.

Citation: Machado, M., Braun, P., Taylor, N.P. & Zappi, D. 2013. Micranthocereus streckeri. In: The IUCN Red List of Threatened Species 2013: e.T40907A2942509. . Downloaded on 09 October 2015.
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