Melocactus schatzlii 

Scope: Global
Language: English

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Taxonomy [top]

Kingdom Phylum Class Order Family
Plantae Tracheophyta Magnoliopsida Caryophyllales Cactaceae

Scientific Name: Melocactus schatzlii H.Till & R.Gruber
Taxonomic Source(s): Hunt, D., Taylor, N. and Charles, G. (compilers and editors). 2006. The New Cactus Lexicon. dh Books, Milborne Port, UK.
Taxonomic Notes: Two subspecies are recognized, the nominate form and subsp. chicamochae Fern. Alonso & Xhonneux.

Assessment Information [top]

Red List Category & Criteria: Vulnerable B1ab(iii) ver 3.1
Year Published: 2017
Date Assessed: 2011-07-26
Assessor(s): Nassar, J. & Taylor, N.P.
Reviewer(s): Chanson, J.S. & Goettsch, B.K.
Facilitator/Compiler(s): Tognelli, M.
This species is listed as Vulnerable because it has a restricted distribution (extent of occurrence less than 20,000 km2), it occurs at a few locations, and there is continuing decline in the extent and quality of its habitat due to urban expansion.
Previously published Red List assessments:

Geographic Range [top]

Range Description:Melocactus schatzlii is found in Colombia (Boyaca, Santander) and a single valley in Venezuela (Lagunillas, Merida) (Hunt et al. 2006), between altitudes of 500 m and 2,200 m asl (Nassar et al. 2007). The estimated Extent of Occurrence is 20,000 km2.
Countries occurrence:
Colombia; Venezuela, Bolivarian Republic of
Additional data:
Number of Locations:3
Lower elevation limit (metres):500
Upper elevation limit (metres):2200
Range Map:Click here to open the map viewer and explore range.

Population [top]

Population:There are no data on population size and trends for this species. Populations are dense, with several hundreds of individuals per hectare, but with small extent (Nassar pers. comm. 2011).
Current Population Trend:Decreasing
Additional data:
Population severely fragmented:No

Habitat and Ecology [top]

Habitat and Ecology:M. schatzlii grows on steep rocky valley slopes and spiny scrublands within xeric patches (Nassar et al. 2007). A predominantly outcrossing species, hummingbirds are the only pollinators responsible for outcrossing and gene flow events in this species. In their absence, M. schatzlii sets seeds by selfing (Nassar et al. 2007).

Use and Trade [top]

Use and Trade: This species is possibly collected as an ornamental.

Threats [top]

Major Threat(s): In Venezuela, the main threat to this species is urban development (Nassar pers. comm. 2011).

Conservation Actions [top]

Conservation Actions: This species does not occur in any protected areas. Research is needed to determine the reduction of the population, particularly in Venezuela.

Amended [top]

Amended reason: The species distribution map has been added.

Citation: Nassar, J. & Taylor, N.P. 2017. Melocactus schatzlii (amended version of 2013 assessment). The IUCN Red List of Threatened Species 2017: e.T152961A121554399. . Downloaded on 23 September 2018.
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