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ISLAND DIRECTORY
Islands of Seychelles
Aldabra [969]
Group: Archipelago: Seychelles Islands (Coralline)
Country: Seychelles Region: Comoro/Aldabra
Lat: 9.40º S Long : 46.37º E
Area: 129.3 sq. km Altitude: 3 m
Shoreline: 103.9 km (scale 1:1000000) Coastal Index: 0.8036
Depth to nearest land: 4000 m
Nearest island: 420 km group: 420 km
Nearest continent: Africa Distance: 640 km Isolation Index: 66
ISLAND TYPE: atoll with 4 main islands Natural Protection Indicator: 0
GEOLOGY/SOILS:
Slightly raised coral atoll, large shallow lagoon with many islets
CLIMATE: semiarid tropical wet season November to April
ECOSYSTEMS: Number of Ecosystems - Terrestrial: 2 Marine: 4
Atoll vegetation rich in species, mangroves; mudflats,
windward and leeward atoll reefs and lagoon. Coral reefs, Mangroves
| SPECIES NUMBERS: |
Total |
Endemic |
Threatened (EVRI) |
| Plants |
273 |
19 |
0 |
| Butterflies |
0 |
0 |
0 |
| Land snails |
0 |
0 |
0 |
| Rept/Amphib |
0 |
0 |
0 |
| Land birds |
13 |
13 |
0 |
| Mammals |
0 |
0 |
0 |
SPECIES OF CONSERVATION INTEREST:
Plants:
273 flowering plants and ferns, including 19 endemics
Peponium sublitorale, endemic only to south island
Reptiles:
Geochelone gigantea (Giant Tortoise) 152,000, self-sustaining
Birds:
13 terrestrial species, all at least endemic subspecies
Butorides striatus degens, endemic subspecies, 200-600 ?
Caprimulgus madagascariensis aldabranis, endemic subspecies
Centropus toulou insularis, endemic subspecies
Dicrurus aldabranus (Aldabra Drongo) endemic
Dryolimnas cuvieri aldabranus (Aldabra White-throated Rail) endemic
subspecies, flightless, 7,000-9,000(1981), Rare
Falco newtoni aldabranus (Aldabra Kestrel) endemic subspecies, 80-100
(1981)
Rare
Foudia eminentissima aldabrana, endemic subspecies
Hypsipetes madagascariensis rostratus, endemic subspecies
Nesillas aldabranus (Aldabra Brush Warbler) endemic, 5-11(1981)
Indeterminate
Streptopelia picturata coppingeri, endemic subspecies
Threskiornis aethiopica abbott (Aldabra Sacred Ibis) endemic
subspecies,
200-300 (1981)
SPECIES RICHNESS:
Species Richness Indicator - Terrestrial: 1 Marine: 0
moderate for plants
ENDEMISM: Terrestrial: Terrestrial Endemism Indicator - Island: 2 Group: 2
high for an atoll
Marine endemic species: 0
Marine Endemism Indicator - Island: 0 Group: 0
SPECIAL FEATURES : Special Features Indicator - Terrestrial: 3 Marine: 0
seabird rookery turtle nesting area
world's largest giant tortoise population
INVASIVE SPECIES: Invasive Species Indicator: 3
rats, cats, goats and some exotic plants
HUMAN OCCUPATION: Inhabited, small resident population and visitors
Population: 12 (1981) Density: 0.1 persons/sq. km
Growth Rate: 0.0%/yr Stable
Major Human Activities: nature reserve, research
HUMAN IMPACTS:
Some past exploitation, but populations have recovered;
research station, meteorological station.
Conservation support: leased from government as reserve
PROTECTED AREAS: Protected Area Coverage Indicators - Terrestrial: 7 Marine: 0
Number: 1 Area: Terrestrial: 129.3 sq. km Marine: 0 sq. km
Aldabra is a strict nature reserve and a World Heritage Site
(1982)
DATA RELIABILITY: well-researched Data Rel. Indicator: 3
HUMAN IMPACT INDEX HI: 3
CONSERVATION IMPORTANCE INDEX CI-Terrestrial: 20 Very high
CI-Marine: 3 Low
REFERENCES:
Last updated: 06/11/88
Aride [1417]
Group: Praslin Group Archipelago: Seychelles Islands (Granitic)
Country: Seychelles
Lat: 4.22º S Long : 55.67º E
Area: 0.0 sq. km Altitude: ? m
Depth to nearest land: 4000 m
Nearest island: 7 km group: 1100 km
Nearest continent: Africa Distance: 1400 km Isolation Index: 73
ISLAND TYPE: continental granitic Natural Protection Indicator: 2
CLIMATE: tropical
ECOSYSTEMS:
HUMAN OCCUPATION: Uninhabited, ?
Population: 0 Density: 0.0 persons/sq. km
Percent population in agr/mining/fishing: 21% Human Threat Indicator: 1
Gross Domestic Product: $ 2327 per capita Economic Pressure Indicator: 1
Conservation support: government support, legislation
PROTECTED AREAS: Protected Area Coverage Indicators - Terrestrial: 0 Marine: 0
Number: 1 Area: Terrestrial: 0.7 sq. km Marine: 0 sq. km
DATA RELIABILITY: Data Rel. Indicator: 2
HUMAN IMPACT INDEX HI: 2
CONSERVATION IMPORTANCE INDEX CI-Terrestrial: 2 Low
CI-Marine: 2 Low
Last updated: 25/10/90
Bird [1416]
Group: Archipelago: Seychelles Islands (Coralline)
Country: Seychelles: Indian
Lat: 3.6º SLong: 55.2º E
Area: 0.0 sq. km Altitude: ? m
ISLAND TYPE: coralline ?
Cousin [1420]
Group: Archipelago: Seychelles Islands (Granitic)
Country: Seychelles: Indian
Lat: 4.33º SLong: 55.67º E
Area: 0.0 sq. km Altitude: ? m
ISLAND TYPE: continental granitic
Curieuse [1418]
Group: Praslin Group Archipelago: Seychelles Islands (Granitic)
Country: Seychelles
Lat: 4.25º S Long : 55.73º E
Area: 0.0 sq. km Altitude: ? m
Depth to nearest land: 4000 m
Nearest island: 1 km group: 1100 km
Nearest continent: Africa Distance: 1400 km Isolation Index: 72
ISLAND TYPE: continental granitic Natural Protection Indicator: 2
CLIMATE: tropical
ECOSYSTEMS:
HUMAN OCCUPATION: Uninhabited, ?
Population: 0 Density: 0.0 persons/sq. km
Percent population in agr/mining/fishing: 21% Human Threat Indicator: 1
Gross Domestic Product: $ 2327 per capita Economic Pressure Indicator: 1
Conservation support: government support, legislation
PROTECTED AREAS: Protected Area Coverage Indicators - Terrestrial: 0 Marine: 0
Number: 1 Area: Terrestrial: 9.8 sq. km Marine: 5 sq. km
DATA RELIABILITY: Data Rel. Indicator: 2
HUMAN IMPACT INDEX HI: 2
CONSERVATION IMPORTANCE INDEX CI-Terrestrial: 2 Low
CI-Marine: 2 Low
Last updated: 25/10/90
Denis [1415]
Group: Archipelago: Seychelles Islands (Coralline)
Country: Seychelles: Indian
Lat: 3.78º SLong: 55.65º E
Area: 0.0 sq. km Altitude: ? m
ISLAND TYPE: coralline
Frigate (Fregate) [1412]
Group: Frigate Group Archipelago: Seychelles Islands (Granitic)
Country: Seychelles
Lat: 4.58º S Long : 55.93º E
Area: 0.0 sq. km Altitude: ? m
Depth to nearest land: 4000 m
Nearest island: 25 km group: 1100 km
Nearest continent: Africa Distance: 1400 km Isolation Index: 76
ISLAND TYPE: continental granitic Natural Protection Indicator: 2
CLIMATE: tropical
ECOSYSTEMS:
ENDEMISM: Terrestrial: Terrestrial Endemism Indicator - Island: 0 Group: 0
beetle
Marine endemic species: 0
Marine Endemism Indicator - Island: 0 Group: 0
HUMAN OCCUPATION: Uninhabited, ?
Population: 0 Density: 0.0 persons/sq. km
Percent population in agr/mining/fishing: 21% Human Threat Indicator: 1
Gross Domestic Product: $ 2327 per capita Economic Pressure Indicator: 1
Conservation support: government support, legislation
DATA RELIABILITY: Data Rel. Indicator: 2
HUMAN IMPACT INDEX HI: 2
CONSERVATION IMPORTANCE INDEX CI-Terrestrial: 2 Low
CI-Marine: 2 Low
Last updated: 06/11/88
La Digue [1419]
Group: Archipelago: Seychelles Islands (Granitic)
Country: Seychelles
Lat: 4.33º S Long : 55.85º E
Area: 0.0 sq. km Altitude: ? m
Depth to nearest land: 4000 m
Nearest island: 5 km group: 1100 km
Nearest continent: Africa Distance: 1400 km Isolation Index: 73
ISLAND TYPE: continental granitic Natural Protection Indicator: 0
CLIMATE: tropical
ECOSYSTEMS:
HUMAN OCCUPATION: Inhabited
Population: 1926 (1987) Density: 0.0 persons/sq. km
Maximum known population: 1980
Growth Rate: 1.0%/yr Increasing slowly
Percent population in agr/mining/fishing: 21% Human Threat Indicator: 1
Gross Domestic Product: $ 2327 per capita Economic Pressure Indicator: 1
Conservation support: government support, legislation
PROTECTED AREAS: Protected Area Coverage Indicators - Terrestrial: 0 Marine: 0
Number: 1 Area: Terrestrial: 0.1 sq. km Marine: 0 sq. km
DATA RELIABILITY: Data Rel. Indicator: 2
HUMAN IMPACT INDEX HI: 2
Last updated: 25/10/90
Mahe - including Conception, Therese, Vache [1407]
Group: Mahe Group Archipelago: Seychelles Islands (Granitic)
Country: Seychelles
Lat: 4.67º S Long : 55.50º E
Area: 148.0 sq. km Altitude: 905 m
Depth to nearest land: 4000 m
Nearest island: 40 km group: 1100 km
Nearest continent: Africa Distance: 1400 km Isolation Index: 77
ISLAND TYPE: continental granitic Natural Protection Indicator: 0
CLIMATE: wet tropical 1700 to 3500 mm
ECOSYSTEMS:
Lowland rain forest, submontane rain forest, cloud forest; mangroves;
wide
fringing reef, shallow lagoon, sandy bottom, algal beds Forest Coral reefs
HUMAN OCCUPATION: Inhabited
Population: 61185 (1987) Density: 413.4 persons/sq. km
Maximum known population: 61185
Growth Rate: 1.0%/yr Increasing slowly
Major Human Activities: tourism, fishing,, coconuts
Accessibility: port, airport Annual tourist arrivals: 77401
Percent population in agr/mining/fishing: 21% Human Threat Indicator: 1
Gross Domestic Product: $ 2327 per capita Economic Pressure Indicator: 1
Conservation support: government support, legislation
PROTECTED AREAS: Protected Area Coverage Indicators - Terrestrial: 3 Marine: 0
Number: 3 Area: Terrestrial: 32.8 sq. km Marine: 0 sq. km
DATA RELIABILITY: Data Rel. Indicator: 2
HUMAN IMPACT INDEX HI: 16
CONSERVATION IMPORTANCE INDEX CI-Terrestrial: 1 Low
CI-Marine: 0 Low
Last updated: 18/02/90
Mamelle [1410]
Group: Mahe Group Archipelago: Seychelles Islands (Granitic)
Country: Seychelles
Lat: 4.48º S Long : 55.52º E
Area: 0.0 sq. km Altitude: ? m
Depth to nearest land: 4000 m
Nearest island: 10 km group: 1100 km
Nearest continent: Africa Distance: 1400 km Isolation Index: 74
ISLAND TYPE: continental granitic Natural Protection Indicator: 2
CLIMATE: tropical
ECOSYSTEMS:
HUMAN OCCUPATION: Uninhabited, ?
Population: 0 Density: 0.0 persons/sq. km
Percent population in agr/mining/fishing: 21% Human Threat Indicator: 1
Gross Domestic Product: $ 2327 per capita Economic Pressure Indicator: 1
Conservation support: government support, legislation
PROTECTED AREAS: Protected Area Coverage Indicators - Terrestrial: 0 Marine: 0
Number: 1 Area: Terrestrial: 0.0 sq. km Marine: 0 sq. km
DATA RELIABILITY: Data Rel. Indicator: 2
HUMAN IMPACT INDEX HI: 2
CONSERVATION IMPORTANCE INDEX CI-Terrestrial: 2 Low
CI-Marine: 2 Low
Last updated: 25/10/90
Praslin - including Booby [1411]
Group: Praslin Group Archipelago: Seychelles Islands (Granitic)
Country: Seychelles
Lat: 4.30º S Long : 55.70º E
Area: 26.0 sq. km Altitude: 340 m
Depth to nearest land: 4000 m
Nearest island: 16 km group: 1100 km
Nearest continent: Africa Distance: 1400 km Isolation Index: 75
ISLAND TYPE: continental granitic Natural Protection Indicator: 0
CLIMATE: tropical
ECOSYSTEMS:
HUMAN OCCUPATION: Inhabited
Population: 5002 (1987) Density: 192.4 persons/sq. km
Maximum known population: 5650
Growth Rate: 1.0%/yr Increasing slowly
Major Human Activities: tourism
Percent population in agr/mining/fishing: 21% Human Threat Indicator: 1
Gross Domestic Product: $ 2327 per capita Economic Pressure Indicator: 1
Conservation support: government support, legislation
DATA RELIABILITY: Data Rel. Indicator: 2
HUMAN IMPACT INDEX HI: 8
Last updated: 18/02/90
Recif [1413]
Group: Archipelago: Seychelles Islands (Granitic)
Country: Seychelles: Indian
Lat: 4.60º SLong: 55.70º E
Area: 0.0 sq. km Altitude: ? m
ISLAND TYPE: continental granitic
Silhouette [1409]
- including North
Group: Silhouette Group, Archipelago: Seychelles Islands (Granitic)
Country: Seychelles: Indian
Lat: 4.48º SLong: 55.20º E
Area: 0.0 sq. km Altitude: ? m
ISLAND TYPE: continental granitic
St Anne - including Moyenne,Long,Cerf,Round,Cach‚e [1408]
Group: Mahe Group Archipelago: Seychelles Islands (Granitic)
Country: Seychelles
Lat: 4.60º S Long : 55.50º E
Area: 14.2 sq. km Altitude: 250 m
Depth to nearest land: 4000 m
Nearest island: 5 km group: 1100 km
Nearest continent: Africa Distance: 1400 km Isolation Index: 73
ISLAND TYPE: continental granitic Natural Protection Indicator: 0
CLIMATE: tropical
ECOSYSTEMS:
HUMAN OCCUPATION: Inhabited
Population: 0 Density: 0.0 persons/sq. km
Major Human Activities: tourism, fishing
Percent population in agr/mining/fishing: 21% Human Threat Indicator: 1
Gross Domestic Product: $ 2327 per capita Economic Pressure Indicator: 1
Conservation support: government support, legislation, tenure
PROTECTED AREAS: Protected Area Coverage Indicators - Terrestrial: 7 Marine: 0
Number: 1 Area: Terrestrial: 14.2 sq. km Marine: 0 sq. km
DATA RELIABILITY: Data Rel. Indicator: 2
HUMAN IMPACT INDEX HI: 2
Last updated: 25/10/90
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Page last updated: 09/05/10