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Botany
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Caribbean Islands
Centres of Plant Diversity and Endemism
Cuba
Cb1. Coast from Juragoa to Casilda
Peninsula; Trinidad Mountains; Sierra del Escambray
Area: c. 2700 km² in south-central Cuba. Altitude:
0-1156 m.
- Vegetation: Succulent and evergreen scrub
thickets, including cacti; evergreen and
semi-deciduous forests; seasonal and montane
forests at higher elevations.
- Flora: >1200 vascular plant species, of which
c. 40 endemic; 7 endemic genera.
- Threats: Proximity to towns and intensive
cultivation pose threats. Native vegetation
survives mostly in the mountains and on the
coast, cays and less fertile land; otherwise
native vegetation is fragmented.
- Conservation: Escambray Integrated Management
Area (1870 km²) (IUCN Management Category:
VIII); Topes de Collantes Natural Park (122 km²)
(IUCN Management Category: V).
Cb2. Oriente
Area: 18,000 km², i.e. the Eastern Sub-Province of
Borhidi (1991). Altitude: 0-1974 m.
- Vegetation: Seasonal evergreen forests, montane
and submontane rain forests, pine forest,
semi-evergreen scrub and semi-desert areas along
the south coast.
- Flora: >3000 vascular plant species, of which
more than 1500 strictly endemic; 24 known endemic
genera. "This area is considered to be the
cradle of the Cuban flora and, together with
western Hispaniola (Haiti), the most prominent
centre of speciation in the Antilles"
(Borhidi 1991: 349). Referring to the
Nipe-Baracoa Massif, which is within the
sub-province: "The richest flora of the
Caribbean, and one of the richest floras of the
World" (Borhidi 1991: 351). Useful plants
include pines, Podocarpus, palms and many
plants of potential ornamental value.
- Threats: Removal of timber and fuelwood, mining
and tourism. However, rugged topography, erosion
and excessive drainage render most of the
remaining important floristic areas unsuitable
for agriculture.
- Conservation: In the south Gran Parque Sierra
Maestra (5270 km²), an Integrated Management
Area (IUCN Management Category: VIII), comprising
the National Parks of Desembarco del Granma (258
km²), Turquino (175 km²) and Gran Piedra (34
km²) (all of which are IUCN Management Category
II) and the Biosphere Reserve of Baconao (846
km²) (IUCN Management Category: IX). In the
north-east Cuchillas del Toa Biosphere Reserve
(1275 km²) (IUCN Management Category: IX).
Cb3. Pinar del Río
Area: 1150 km², situated in the western mountains.
Altitude: 0-692 m.
- Vegetation: Coniferous forests, seasonal forests,
forests and thickets on karstic limestone and
serpentine, succulent and thorn scrub, swamp and
oligotrophic lagoons and mangroves.
- Flora: Estimated 500 endemic vascular plant
species and 16 endemic genera. Of particular
interest is the endemic cycad Microcycas
calocoma. Useful plants include pines and
oaks.
- Threats: Removal of fuelwood, tourism. Forests on
lower fertile soils degraded; thickets on rugged
terrain and cliffs minimally at risk.
- Conservation: Mil Cumbres Integrated Management
Area (166 km²) (IUCN Management Category: VIII),
which includes Cajálbana Tableland and Preluda
Mountain region (see Data Sheet); Sierra del
Rosario Biosphere Reserve (100 km²) (IUCN
Management Category: IX); Viñales National Park
(containing Cuba's richest "mogotes"
limestone towers) (134 km²) (IUCN Management
Category: II); Península de Guanahacabibes
Biosphere Reserve (1015 km²) (IUCN Management
Category: IX); Cabo Corrientes Natural Reserve
(16 km²) (IUCN Management Category: I); Sur Isla
de la Juventud Natural Park (800 km²) (IUCN
Management Category: V); Penínsular de Zapata
National Park and the Cienaga de Zapata Natural
Reserve.
(Source: A. Leiva and R. Berazaín 1993, in
litt.).
Cb3. (in part) Cajálbana Tableland and
Preluda Mountain region
Dominica
Cb4. Morne Trois Pitons National Park
Area: 70 km², in south-central interior of Dominica.
Altitude: c. 600-1383 m.
- Vegetation: Rain forest, montane forest,
secondary palm brakes, elfin woodland. Other
habitats provided by cold and hot (volcanic)
lakes, sulphur springs, fumaroles.
- Flora: 500 vascular plant species. Plants provide
craft materials; some potential ornamental
species.
- Threats: Tourism and water supply development.
- Conservation: The area is a National Park which
protects a vital watershed, but there are limited
management resources.
Dominican Republic
Cb5. Cordillera Central
Area: >1530 km² already in designated protected
areas in parts of Provinces La Vega, Santiago, San Juan
de la Maguana, Azua and Valverde. Altitude: 1000-3087 m.
- Vegetation: Seasonal evergreen forest, submontane
and montane rain forests with broadleaved
hardwoods; Prestoea montana palm forest; Pinus
occidentalis forest at higher elevations.
- Flora: Estimated 1500 vascular plant species, of
which 25-30% probably endemic (T.A. Zanoni 1993, in
litt.). Useful plants include timber trees,
such as Pinus occidentalis (western pine),
Magnolia spp. and Lauraceae.
- Threats: Logging, cattle grazing, tourism.
- Conservation: José Armando Bermúdez National
Park (766 km²) and José del Carmen Ramírez
National Park (738 km²) cover substantial parts
of the upper Cordillera Central. Two Scientific
Reserves (IUCN Management Category: IV) occur
within the parks: Valle Nuevo (409 km²) and
Ebano Verde Natural (23 km²).
Cb6. Los Haitises
Area: region covers 1315 km² in north-east Dominican
Republic. Altitude: 0-380 m.
- Vegetation: Forests over limestone; however, only
c. 10% of the native forests remain in and around
the National Park.
- Flora: >500 vascular plant species, of which
138 are island endemics.
- Threats: Cattle grazing, agriculture, some
logging, relocation of local population outside
of National Park area.
- Conservation: Los Haitises National Park (IUCN
Management Category II) currently covers 208
km², but there are plans to extend this to
include an area along Samaná Bay and mangroves
at the west end of bay. There are also plans to
include much of the area and the Samaná
Peninsula in a Biosphere Reserve.
(Source: T.A. Zanoni 1993, in litt. See
also Zanoni et al. 1990).
Cb7. Sierra de Neiba
Situated in western Dominican Republic. Altitude:
1000-2000 m.
- Vegetation: Montane broadleaved forest, pine
forest, cloud forest.
- Flora: 300400 vascular plant species, of which
2530% are endemic. Useful plants include timber
trees (such as Pinus occidentalis) and
tree ferns (Cyathea spp.).
- Threats: Clearance for agriculture, some grazing,
removal of trees for timber and firewood.
- Conservation: Proposed National Park. Possibility
of inclusion within a Biosphere Reserve in the
future.
(Source: T.A. Zanoni 1993, in litt. See
also Santana Ferreras 1993.)
Haiti
Cb8. Pic Macaya
Area: 55 km², in south-western Haiti in the Massif de
la Hotte. Altitude: 900-2347 m.
- Vegetation: Wet broadleaved forest on limestone
(900-c. 1250 m), complex mosaic of pine forest
and cloud forest (c. 1250-2347 m).
- Flora: 665 vascular plant species (of which c.
30% are endemic to Hispaniola) and 165 bryophyte
species so far recorded within National Park area
(see below) (Judd and Skean 1987; Judd, Skean and
McMullen 1990).
- Threats: Clearance for agriculture, some grazing,
removal of trees for timber and firewood, and
charcoal production.
- Conservation: Parc National Pic Macaya (20 km²)
(IUCN Management Category: II); possible
inclusion within a Biosphere Reserve (Sergile,
Woods and Paryski 1992).
Cb9. Morne La Visite
Area: 20 km², in south-eastern Haiti in the Massif de
la Selle. Altitude: 1600-2282 m.
- Vegetation: Pine forest and cloud forest.
- Flora: 337 vascular plant species (of which c.
34% are endemic to Hispaniola) and 95 bryophyte
species so far recorded (Judd and Skean 1987).
- Threats: Clearance for agriculture, some grazing,
removal of trees for timber and firewood, and
charcoal production.
- Conservation: Parc National Morne La Visite (IUCN
Management Category: II).
(Source: W.S. Judd 1993, in litt.).
Jamaica
Cb10. Blue and John Crow Mountains
Cb11. Cockpit Country
Trinidad
Cb12. Aripo Savannas Scientific
Reserve
Area: 18 km², situated in the east-central lowland
area of Caroni Plain. Altitude: 35-40 m.
- Vegetation: Marsh forest, palm-marsh and savanna.
- Flora: No available total but herbaceous flora
includes at least 14 species of Utricularia
(bladderworts), 5 species of Xyridaceae, and
Eriocaulaceae, Mayaca, Drosera and
ground orchids, not otherwise represented in the
southern Caribbean. Useful plants include Mauritia
setigera (Moriche palm); other palms for
craft materials include Euterpe precatoria
(manac), Jessenia oligocarpa (palm real)
and Manicaria plukenetii (timite). Past
forestry practices within the Long Stretch Forest
Reserve, of which the savannas form a part, have
removed most of the commercially valuable timber.
- Threats: Quarrying for sand and gravel takes
place along the adjacent Aripo River and
sometimes encroaches on the protected area. Fires
occur regularly during the dry season in the
grassy areas but their long-term significance is
unknown; indigenous perennial herbaceous species
are mostly naturally fire-adapted. Some hunting
of indigenous mammals and birds takes place.
- Conservation: Scientific Reserve (IUCN Management
Category: I). Access is restricted. Extremely
poor soil quality and impeded drainage protect
the area from agricultural exploitation.
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