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Melocactus pachyacanthus

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Taxonomy [top]

Kingdom Phylum Class Order Family
PLANTAE TRACHEOPHYTA MAGNOLIOPSIDA CARYOPHYLLALES CACTACEAE

Scientific Name: Melocactus pachyacanthus
Species Authority: Buining & Brederoo
Taxonomic Notes: Two subspecies are recognized, the nominate form and subsp. viridis N.P.Taylor. Both subspecies were previously assessed in 2002, the nominate was assessed as Endangered and subsp. viridis as Critically Endangered. Neither of these subspecies has been reassessed and hence they are now excluded from the Red List.

Assessment Information [top]

Red List Category & Criteria: Vulnerable B1ab(i,ii,iii,iv,v) ver 3.1
Year Published: 2013
Date Assessed: 2010-08-08
Assessor/s: Braun, P., Machado, M., Taylor, N.P. & Zappi, D.
Reviewer/s: Chanson, J.S. & Goettsch, B.K.
Facilitator/s: Tognelli, M.
Justification:
This species is assessed as Vulnerable because it has a restricted and fragmented distribution (extent of occurrence is 6,500 km2) and there is continuing decline in its extent of occurrence, area of occupancy and extent and quality of habitat. The loss of habitat is mainly due to mining and agriculture.
History:
2002 Endangered

Geographic Range [top]

Range Description: This species is found near the Rio Salitre and in the region of Irecê, northern Bahia, Brazil. The distribution of the species is very restricted, and is limited to two locations and is severely fragmented. In Caatinga it occurs between 520 - 750 m asl.
Countries:
Native:
Brazil (Bahia)
Range Map: Click here to open the map viewer and explore range.

Population [top]

Population: In most of the sites where the species is found, the population number is low (10 - 100 individuals). However, there are two sites where the number of individuals are in the thousands. There have been population reductions in the past, mainly due to quarries, including the type locality.
Population Trend: Decreasing

Habitat and Ecology [top]

Habitat and Ecology: The species occurs on Northern Rio São Francisco caatinga element on flat, exposed Bambuí limestone (Taylor and Zappi 2004).
Systems: Terrestrial

Threats [top]

Major Threat(s): The major threats for this species are loss of habitat and to a lesser extent collection for local use. Loss of habitat is mainly due to mining of limestone and agriculture.

Conservation Actions [top]

Conservation Actions: This species is listed on CITES Appendix II. It occurs in one protected area (Gruta do Breijoes).
Citation: Braun, P., Machado, M., Taylor, N.P. & Zappi, D. 2013. Melocactus pachyacanthus. In: IUCN 2013. IUCN Red List of Threatened Species. Version 2013.2. <www.iucnredlist.org>. Downloaded on 24 April 2014.
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