Mammillaria nivosa 

Scope: Global
Language: English

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Taxonomy [top]

Kingdom Phylum Class Order Family
Plantae Tracheophyta Magnoliopsida Caryophyllales Cactaceae

Scientific Name: Mammillaria nivosa Link ex Pfeiff.
Common Name(s):
English Woolly Nipple Cactus
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: Not taxonomic issues.

Assessment Information [top]

Red List Category & Criteria: Least Concern ver 3.1
Year Published: 2017
Date Assessed: 2011-07-28
Assessor(s): Taylor, N.P.
Reviewer(s): Superina, M. & Goettsch, B.K.
Facilitator/Compiler(s): Tognelli, M.
Mammillaria nivosa has a wide distribution and is known from various locations on different islands in the Caribbean. Its habitat quality is expected to be declining due to urban and tourism development. However, a subpopulation in the middle of its geographical range is within a protected area (Mona Island Natural Reserve) and was reported by Britton and Rose (1923) as extremely abundant. It is therefore listed as Least Concern.
Previously published Red List assessments:

Geographic Range [top]

Range Description:Mammillaria nivosa is distributed in the Bahamas, Puerto Rico (Mona, Desecho and Culebra Islands), US Virgin Islands (Buck Island, St. Thomas, Little St. James), British Virgin Islands (Tortola), Antigua, and the British and the West Indies (Hunt et al. 2006).
Countries occurrence:
Antigua and Barbuda; Bahamas; Barbados; Cayman Islands; Jamaica; Puerto Rico; Trinidad and Tobago; Turks and Caicos Islands; Virgin Islands, British; Virgin Islands, U.S.
Additional data:
Range Map:Click here to open the map viewer and explore range.

Population [top]

Population:It has been reported in immense numbers on the island of the Mona passage (Britton and Rose 1923). Mona Island is a nature reserve and therefore the subpopulation there is thought to be intact. Habitat quality for subpopulations on other islands within its range are expected to be declining due to habitat loss from urban and tourism development.
Current Population Trend:Stable
Additional data:

Habitat and Ecology [top]

Habitat and Ecology:It has been reported from naked limestone rocks (Britton and Rose 1923).

Use and Trade [top]

Use and Trade: There is no information available on use or trade of this species.

Threats [top]

Major Threat(s): This species is affected by development of urban areas and tourism. Almost all of the islands where this species occurs are tourist resorts. However, this species also occurs on Mona Island, which is a protected nature reserve, and presumably not affected by development.

Conservation Actions [top]

Conservation Actions: This cactus occurs on Mona Island, a protected nature reserve. No specific conservation measures are proposed.

Amended [top]

Amended reason: The species distribution map has been added.

Citation: Taylor, N.P. 2017. Mammillaria nivosa (amended version of 2013 assessment). The IUCN Red List of Threatened Species 2017: e.T152238A121528097. . Downloaded on 23 September 2018.
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