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Zamia lucayana 

Scope: Global
Language: English
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Taxonomy [top]

Kingdom Phylum Class Order Family
Plantae Tracheophyta Cycadopsida Cycadales Zamiaceae

Scientific Name: Zamia lucayana Britton

Assessment Information [top]

Red List Category & Criteria: Endangered A4ac; B1ab(i,ii,iii,v)+2ab(i,ii,iii,v) ver 3.1
Year Published: 2010
Date Assessed: 2009-10-31
Assessor(s): Stevenson, D.W.
Reviewer(s): Donaldson, J.S. & Bösenberg, J.D.
Justification:
Qualifies as Endangered (EN) based on small extent of occurrence (13 km²) and ongoing decline. Populations have declined by 40% over the past 50 years and there is continuing decline, estimated to >20% over the next generation so also qualifies as EN under criterion A.
Previously published Red List assessments:

Geographic Range [top]

Range Description:This species occurs on the southeastern portion of Long Island in the Bahamas. Populations are found near Clarence Town and Turtle Cove.
Countries occurrence:
Native:
Bahamas
Additional data:
Number of Locations:3
Lower elevation limit (metres):1
Upper elevation limit (metres):15
Range Map:Click here to open the map viewer and explore range.

Population [top]

Population:This species consists of an extensive colony with many old plants, as well as a thriving understorey of seedlings. However, although at least five subpopulations were recorded 10 years ago, two of those groups have now disappeared as a result of forest clearing. Some of the others have declined due to trash dumping. There are probably other subpopulations in more remote locations.
Current Population Trend:Decreasing
Additional data:
Number of mature individuals:1000-1500
Population severely fragmented:No

Habitat and Ecology [top]

Habitat and Ecology:This species grows in sandy coastal thicket. Populations generally occur in areas of pure sand, in association with sea grape (Coccoloba sp.) Plants are found in limestone and sand about 91 metres from the sea. Two of the three populations are located in shallow depressions that are kept continually moist by seepage from the island's freshwater lens. There is usually no standing groundwater for at least half the year. One population is marginal around a deeper freshwater pond. This is a permanent pond. All populations receive direct sunlight. Plants have not been seen growing in semi- or full-shade situations.
Systems:Terrestrial
Generation Length (years):30

Threats [top]

Major Threat(s): Two out of the three photographed subpopulations are roadside subpopulations with easy public access; they are in danger of being eliminated through road expansion, shifting cultivation, and indiscriminate garbage dumping. Forest clearing also poses a threat.

Conservation Actions [top]

Conservation Actions: This species is listed on Appendix II of the CITES Appendices.

Citation: Stevenson, D.W. 2010. Zamia lucayana. The IUCN Red List of Threatened Species 2010: e.T42167A10671737. . Downloaded on 21 September 2017.
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