Overview

Distribution

Range Description

Anegada, British Virgin Islands. Extent of occurrence: 25 km², Area of occupancy: <10 km². Ex situ population: One mature, reproducing individual in the display collection of the JR O’Neal Botanic Garden on Tortola, BVI. 22 seedlings are in cultivation at the JR O’Neal Botanic Garden Nursery.

Population size is unknown, but field observations indicate it to be locally common on limestone and scarce on sand dunes. Treated as one location with no distinct subpopulations.
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Physical Description

Type Information

Isotype for Acacia anegadensis Britton
Catalog Number: US 791898
Collection: Smithsonian Institution, National Museum of Natural History, Department of Botany
Verification Degree: Verified from the card file of type specimens
Preparation: Pressed specimen
Collector(s): N. L. Britton & W. Fishlock
Year Collected: 1913
Locality: Anegada Island, Greater Antilles, British Virgin Islands, West Indies
  • Isotype: Britton, N. L. 1916. Mem. New York Bot. Gard. 6: 572.
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Ecology

Habitat

Habitat and Ecology

Habitat and Ecology
Definite preference to limestone substrate – field data show a frequency >50% on limestone and <5% on sand dunes (based on 104 x 20 m² plots). Field observations indicate poor recruitment – relatively few seedlings or saplings observed.

Systems
  • Terrestrial
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Molecular Biology and Genetics

Molecular Biology

Barcode data: Acacia anegadensis

The following is a representative barcode sequence, the centroid of all available sequences for this species.


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Statistics of barcoding coverage: Acacia anegadensis

Barcode of Life Data Systems (BOLDS) Stats
Public Records: 1
Specimens with Barcodes: 1
Species With Barcodes: 1
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Conservation

Conservation Status

IUCN Red List Assessment


Red List Category
CR
Critically Endangered

Red List Criteria
B1ab(iii,v)+2ab(iii,v)

Version
3.1

Year Assessed
2003
  • Needs updating

Assessor/s
Clubbe, C. & Pollard, B. (RBG, Kew), Smith-Abbott, J., Walker, R. & Woodfield, N. (BVI National Parks Trust)

Reviewer/s
Maunder, M. & Strahm, W. (SSC Plant Conservation Committee)

Contributor/s

Justification
Anegada endemic. Area of the island is 38 km², of which approximately one third is water in the form of salt ponds. Therefore extent of occurrence for Acacia anegadensis is approximately 25 km². Fieldwork has determined that Acacia anegadensis is found across the island with a preference for limestone habitats and less common on sand dunes. Its area of occupancy has been estimated as < 10 km². Because of the small size of the island and the known distribution of this species we have treated this as 1 location. The island of Anegada is under extreme pressure for residential and tourism development. This has already resulted in documented habitat fragmentation and loss leading to a decline in the quality of the habitat for this species. All the available information indicates that this will accelerate in the next few years. This will result in a continued decline in the quality of the habitat and a reduction in the number of mature individuals.
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Population

Population Trend
Unknown
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Threats

Major Threats
Anegada is under severe development pressure resulting in both loss of habitat to residential and tourism infrastructure, and further fragmentation due to upgrading and construction of new roads. Loose livestock (cattle, goats, donkeys) roam the island and impact at the habitat (trampling) and species level (grazing). Invasive species may be a problem with increasing habitat fragmentation. The Settlement (Anegada’s only town) has lots of known invasives, three of which have been observed moving into natural habitats – Casuarina equisetifolia (also found along several western dunes), Cryptostegia madagascariensis and Bryophyllum pinnatum. Fire may be a problem in the future – increasing use of fire to clear land. Highest point of Anegada is approx. 10 m above sea level. Most of the preferred habitat is <3 m above sea level and so global climate change will reduce quality and area of habitat available to A. anegadensis. Natural disasters are a current and on-going threat e.g., hurricanes, coastal inundation and earthquakes. Formally cut for timber and the resin used as a boat sealant. No current utilization known.
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Management

Conservation Actions

Conservation Actions
A small proportion of the preferred habitat (limestone) lies within a Ramsar site (declared 1999) and national legislation is currently being prepared to declare this a Protected Area. One mature, reproducing individual in cultivation in the JR O’Neal Botanic Garden on Tortola, BVI. 22 seedlings in cultivation in the botanic garden nursery (collected in Anegada in 2000). Protected Wildlife legislation is currently being revised and consideration is being given to including named endemic/ threatened species of flora and fauna within this Schedule.
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Wikipedia

Acacia anegadensis

Vachellia anegadensis (pokemeboy) is a species of legume in the Fabaceae family. It is found only in the British Virgin Islands. Its natural habitats are subtropical or tropical dry forests, subtropical or tropical dry shrubland, sandy shores, and rural gardens. It is threatened by habitat loss.[2]

References[edit]

  1. ^ H. David Clarke, David S. Seigler, and John E. Ebinger (2009) Taxonomic revision of the Vachellia acuifera species group (Fabaceae: Mimosoideae) in the Caribbean. Systematic Botany, 34(1):84–101.
  2. ^ Clubbe, C., Pollard, B., Smith-Abbott, J., Walker, R. & Woodfield, N. 2003. Vachellia anegadensis (as Acacia anegadensis). 2006 IUCN Red List of Threatened Species. Downloaded on 18 July 2007.
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