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ISLAND DIRECTORY


Islands of Mauritius

Agalega     [1318] - including North Island, South Island
Group:
Country: Mauritius - Agalega Islands: Indian
Lat: 10.40º SLong: 56.55º E Region: Mascarene Islands
Area: 0.3 sq. km   Altitude: ? m
ISLAND TYPE: low coral?

Cargados Carajos Shoals (St. Brandon)  - including Albatros    [1320]
   Group:
   Country: Mauritius - Cargados Carajos
Lat: 16.58º S   Long : 59.60º E
Area: 2.7 sq. km   Altitude: ? m
Submerged area <100 m: 0 sq. km   Reef area: 190 sq. km   Lagoon area: 0 sq. km
Depth to nearest land: 4000 m
Nearest island: 500 km   group: 500 km
Nearest continent: Africa    Distance: 1900 km    Isolation Index: 88
ISLAND TYPE: low coral islets on reef      Natural Protection Indicator: 1
CLIMATE: monsoon  tropical 
CATASTROPHIC THREATS: cyclones
   Threat Indicator: 1
ECOSYSTEMS:           
Extensive fringing and barrier reef and lagoon.
ENDEMISM: Terrestrial:   Terrestrial Endemism Indicator - Island: 0  Group: 0
  Marine endemic species: 1   Marine Endemism Indicator - Island: 1  Group: 1
    1 endemic mollusc
SPECIAL FEATURES :   Special Features Indicator - Terrestrial: 1   Marine: 0
   turtle nesting area
HUMAN OCCUPATION: Inhabited
  Population: 0    Density: 0.0 persons/sq. km
  Percent population in agr/mining/fishing: 80%   Human Threat Indicator: 3
  Gross Domestic Product: $ 659 per capita    Economic Pressure Indicator: 0
Conservation support: government support, leaseholder support
PROTECTED AREAS:    Protected Area Coverage Indicators - Terrestrial: 2  Marine: 0
  Number: 1   Area: Terrestrial: 0.2 sq. km    Marine: 0 sq. km
DATA RELIABILITY:    Data Rel. Indicator: 1
HUMAN IMPACT INDEX     HI: 3
CONSERVATION IMPORTANCE INDEX   CI-Terrestrial: 3   Low
CI-Marine: 8   Moderate
Last updated: 06/11/88

Mauritius (Maurice)  - including Plate, Ronde, Ambre, Cerfs    [779]
   Group: Archipelago: Mascarene Archipelago
   Country: Mauritius   Region: Mascarene Islands
Lat: 20.25º S   Long : 57.58º E
Area: 1873.8 sq. km   Altitude: 828 m
Shoreline: 216.8 km (scale 1:1000000)   Coastal Index: 0.1157
Submerged area <100 m: 0 sq. km   Reef area: 0 sq. km   Lagoon area: 243 sq. km
Depth to nearest land: 4000 m
Nearest island: 250 km   group: 805 km
Nearest continent: Africa    Distance: 1800 km    Isolation Index: 87
ISLAND TYPE: weathered volcanic      Natural Protection Indicator: 0
GEOLOGY/SOILS:
Weathered volcanic platform with deep but rocky soil rising to plateau at 600m, occasional steep peaks; numerous short rivers; fringing reef around much of island.
CLIMATE: humid monsoon  tropical  5000 mm, mean temp. 23-19C
WATER BALANCE: water shortages with increasing drought
CATASTROPHIC THREATS: cyclones, drought
   Threat Indicator: 2
ECOSYSTEMS:           Number of Ecosystems - Terrestrial: 10    Marine: 11
Only 1% of native vegetation remaining along rivers and on steep volcanic peaks: palm savanna (only small areas remain),dry forest in centre with olive wood and ebony, plateau forest (little remaining), heath, scrub, grassland; lakes, rivers; mangroves, salt marshes; bays (13.6 sq.km), estuaries (132 sq.km), lagoon (243 sq.km), beaches, algal beds, seagrass beds and intertidal and subdidal soft bottoms; small barrier reef, fringing reefs (300 sq.km), patch reefs.
   Percent of land: Forested: 1%  Developed: 0%  Degraded: 0%
   Percent shoreline: Coral Reef: 99%  Mangrove: 0%
SPECIES NUMBERS: Total Endemic Threatened (EVRI)
Plants  850 300 216
Butterflies 0 0 0
Land snails 0 0 0
Rept/Amphib 0 5 5
Land birds 16 9 2
Mammals 0 0 0

SPECIES OF CONSERVATION INTEREST:
Of an original 500 endemic species, at least 200 are now extinct. Plants: Diospyros egrettarum (Bois d'Ebene) endemic, 200-400 on Ile aux Aigrettes, diminishing, not regenerating Listrostachys polystachys (Orchidaceae) 50-60 on Ile aux Aigrettes, declining Gastonia cutispongia (Bois Boeuf) endemic, 30-40 on Ile aux Aigrettes, few on mainland, vulnerable Sideroxylon bontoniamum (Bois de Fer) endemic, Ile aux Aigrettes, endangered Hyoporbe lagenicaulis (Bottle Palm) endemic, 10-12, Round Island, endangered Dictyosperma album var. conjugatum (Hurricane palm, Palmiste blanc) endemic to Round Island, two remaining survivors, endangered Pandanus vandermerschii, endemic, less than 400 remaining mostly on islets Latania loddigesii (Latin or Fan Palm) endemic, Round Island Lomatophyllum tormentorii (Lilliaceae) endemic, Round Island (500) and Gunner's Quoin (2000) Astelia hemichrysia Angraecum spp. Blechnum attenuatum Trochetia spp. Sideroxylon grandiflorum Ocotea cupularis Phajus spp. Jumellia fragrans Tambourissa sieberii Cordyline mauritiana Bakerella hoyifolia Clematis mauritiana Reptiles: Casserea dussumeiri (Round Island Keel-scaled Boa) endemic to Round Island, less than 75, Rare (RDB) Bolyeria multicarinata (Round Island Boa) endemic to Round Island, very few, Endangered (RDB) Cyrtodactylus serpensinsula (Serpent Island Gecko) endemic, Round and Serpent Islands, 4,000-5,000 Phelsama guentheri (Round Island Day Gecko) endemic to Round Island, 300, Rare (RDB) Leiolopisma telfairii (Round Island Skink) endemic to Round Island, 4,000- 5,000 (1978) decreasing, Rare (RDB) Birds: 29 native birds originally, including 21 endemics; only 16 remain today: Nesoenas meyeri, endemic Foudia rubra, endemic Coquus typicus, endemic Tchitrea bourbonnensis, endemic Psittacula echo (Echo-parakeet) endemic, bred in captivity Zosterops curvirostris curvirostris, endemic Falco punctatis (Mauritian Kestrel, Crecerelle) endemic Microscelis borbonica olivacea, endemic Malacirops borbonicus mauritianus, endemic Columba mayeri (Pigeon des Mares) (Pigeon Rose) Pterodroma arminjoniana arminjoniana (Trinidad Gadfly Petrel) restricted disjunct distribution Round Island (Mauritius) and Isla da Trindade (Brazil), very rare Marine life: Harpa costata (mollusca) endemic to Mauritius Amphiprion chrysogaster (anemone fish) endemic
SPECIES RICHNESS:   Species Richness Indicator - Terrestrial: 2  Marine: 0
moderate
ENDEMISM: Terrestrial:   Terrestrial Endemism Indicator - Island: 4  Group: 4
    high
  Marine endemic species: 2   Marine Endemism Indicator - Island: 1  Group: 1
    slight
SPECIAL FEATURES :   Special Features Indicator - Terrestrial: 1   Marine: 0
  seabird rookery Ile Ronde
  Riviere Noire gorges with endemic flora and fauna
INVASIVE SPECIES:     Invasive Species Indicator: 3
  feral Javanese deer, pigs; guava, etc.

HUMAN OCCUPATION: Inhabited, since 1638, heavily developed
  Population: 1009000 (1988)   Density: 538.5 persons/sq. km
  Maximum known population: 1009000
  Growth Rate: 1.4%/yr   Increasing slowly
  Major Human Activities: textiles, sugar cane, tourism
HUMAN IMPACTS:
Uninhabited before European colonization; heavy impact on nature since Dutch settlement in 1638, with cutting of indigenous forest for ebony and decimation of native birds including the dodo (Aphanapterix); intensive French colonization from 1721 until taken by British in 1810; lowlands entirely cleared for sugar cane (85% of land) by imported African and Indian labourers, tea grown in uplands. Population 90% rural. Independent 1968, extensive industialization (textiles) and tourism development with some pollution problems. High pesticide usage in sugar cane of 44 kg/ha/year. Coral reefs largely degraded in last decade by dynamite fishing and pollution. Water problem with increasing droughts.
  Habitat: cities plus scattered towns   Urban Pop: 420000  Urban Indicator: 4
  Accessibility: port, airport  Annual tourist arrivals: 245000
  Percent population in agr/mining/fishing: 27%   Human Threat Indicator: 1
  Gross Domestic Product: $ 1600 per capita    Economic Pressure Indicator: 1
Conservation support: government support, legislation
PROTECTED AREAS:    Protected Area Coverage Indicators - Terrestrial: 1  Marine: 0
  Number: 13   Area: Terrestrial: 51.0 sq. km    Marine: 84 sq. km
Nature reserves include 4,585 ha of forest and the islets around Mauritius: Macchabee-Bel Ombre Nature Reserve and Biosphere Reserve (3611 ha) Ile Ronde (Round Island, 159 ha, 300 m) seabird rookery, endangered reptiles Ile Plate (253 ha, 116 m) Ilot Marianne (2 ha, 2 m) Ile aux Aigrettes (35 ha, 5 m) remnant coastal vegetation Ilot Gabriel (42 ha, 27 m) Coin de Mire (76 ha, 158 m) seabird rookery Fishing Reserves (Multiple Use Areas): Riviere du Rempart-Poudre d'Or (35 sq.km) Flacq (6 sq.km) Black River (9 sq.km) Grand Port-Mahebourg (22 sq.km) Port Louis (5 sq.km) Trou d'Eau Douce (7 sq.km) Proposed reserve: Ile aux Serpents (31 ha, 177 m) seabird rookery
DATA RELIABILITY: good recent    Data Rel. Indicator: 3
HUMAN IMPACT INDEX     HI: 25
CONSERVATION IMPORTANCE INDEX   CI-Terrestrial: 70   Outstanding
CI-Marine: 15   High
REFERENCES:
Jehangeer, M.I. 1984. National Report for Maurutius. In IUCN/UNEP, Marine and Coastal Conservation in the East African Region: National Reports. UNEP Regional Seas Reports and Studies No. 50.
Last updated: 23/12/90

Rodrigues   - including Cocos, Sable, Combrani, Crabe    [1317]
   Group:
   Country: Mauritius - Rodrigues   Region: Mascarene Islands
Lat: 19.70º S   Long : 63.41º E
Area: 107.8 sq. km   Altitude: 396 m
Shoreline: 60.2 km (scale 1:1000000)   Coastal Index: 0.5584
Submerged area <100 m: 0 sq. km   Reef area: 200 sq. km   Lagoon area: 240 sq. km
Depth to nearest land: 3000 m
Nearest island: 650 km   group: 650 km
Nearest continent: Africa    Distance: 2200 km    Isolation Index: 98
ISLAND TYPE: volcanic      Natural Protection Indicator: 0
GEOLOGY/SOILS:

CLIMATE: monsoon  tropical  wet summer, dry winter
CATASTROPHIC THREATS: cyclones
   Threat Indicator: 1
ECOSYSTEMS:           Number of Ecosystems - Terrestrial: 3
Limestone scrub with endemic species; Pisonia forest on islets; extensive coral reefs (90 km) and shallow lagoon.
SPECIES NUMBERS: Total Endemic Threatened (EVRI)
Plants  145 49 62
Butterflies 0 0 0
Land snails 0 0 0
Rept/Amphib 0 0 0
Land birds 0 2 2
Mammals 0 1 1

SPECIES OF CONSERVATION INTEREST:
Plants: Nesogenes decumbens, endemic herb, very rare, Plaine Corail Zanthoxylum paniculatum (Bois Pasner, Bambara) endemic, endangered ,5 trees at Anse Quitor Antirrhoa frangulacea (Rubiaceae, Bois Goudron) endemic, endangered, few shrubs near Pointe Corail airport Diospyros diversifolia (Ebony Tree) Ca. xylopicron (Bois de Ronde) Elaeodendron orientale (Bois d'Olive) Polenontylia Scolopria Birds: Foudia flavicans (Rodrigues Fody, Zoiseau Zaune) endemic, Streamside vegetation in Solitude and Cascade Pigeon valleys, 20-30 pairs (1976) Bebrornis rodericana (Rodrigues Brush Warbler, Zoiseau long bec) endemic, endangered, only at Cascade Pigeon Mammals: Pteropus rodricensis (Rodrigues Bat)   Species Richness Indicator - Terrestrial: 1  Marine: 0
ENDEMISM: Terrestrial:   Terrestrial Endemism Indicator - Island: 3  Group: 3
  Marine endemic species: 0   Marine Endemism Indicator - Island: 0  Group: 0
SPECIAL FEATURES :   Special Features Indicator - Terrestrial: 1   Marine: 0
  seabird rookeries, islets
INVASIVE SPECIES:     Invasive Species Indicator: 0
  goats, pigs, sheep

HUMAN OCCUPATION: Inhabited
  Population: 35000 (1988)   Density: 324.7 persons/sq. km
  Growth Rate: 1.4%/yr   Increasing slowly
  Major Human Activities: agriculture (vegetables), goats, fishing
HUMAN IMPACTS:
Much native vegetation degraded by domesticated animals.
  Accessibility: dock, airport
  Percent population in agr/mining/fishing: 90%   Human Threat Indicator: 3
  Gross Domestic Product: $ 659 per capita    Economic Pressure Indicator: 0
Conservation support: government support, legislation
PROTECTED AREAS:    Protected Area Coverage Indicators - Terrestrial: 0  Marine: 0
  Number: 2   Area: Terrestrial: 0.0 sq. km    Marine: 0 sq. km
Offshore islets: Ilot Sable Nature Reserve (7.75 ha, 2 m) seabird rookery Ile Cocos Nature Reserve (14 ha, 4 m) Pisonia and seabird rookery Proposed reserves: Cascade Pigeon Anse Quitor and Plaine Corail (airport region)
DATA RELIABILITY: good    Data Rel. Indicator: 3
HUMAN IMPACT INDEX     HI: 13
CONSERVATION IMPORTANCE INDEX   CI-Terrestrial: 27   Very high
CI-Marine: 1   Low
REFERENCES:

Last updated: 23/10/88

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Page last updated: 02/03/98