Ogea (20336)
Fiji, Oceania
Site overview
KBA status: confirmed
Year of last assessment: 2007
National site name: Ogea
Central coordinates: Latitude: -19.1667, Longitude: -178.4000
System: marine, terrestrial
Elevation (m): 0 to 91
Area of KBA (km2): 18.30274
KBA classification: Global
Legacy site: Yes
Site details
Site description: The IBA covers the entire range of the Ogea Monarch: the two principal islands of Ogea, Ogea Levu and Ogea Driki (13 km2 and 5 km2 respectively, 2 km apart), and the smaller island of Dakuiyanuya (immediately adjacent to Ogea Levu). These are raised coralline islands.
Rationale for qualifying as KBA: This site qualifies as a Key Biodiversity Area of international significance that meets the thresholds for at least one criterion described in the Global Standard for the Identification of KBAs. KBA identified in the CEPF Ecosystem Profile of the Polynesia-Micronesia Hotspot (2007). Taxonomy, nomenclature and threat status follow the 2003 IUCN Red List.
Additional biodiversity: This IBA has six endemic subspecies which are restricted to the Lau group or other small islands in the south of Fiji and are not included in any other IBAs. The Blue-crowned Lory is also restricted to the South Lau group within Fiji but is more widespread around Tonga and Samoa. A1 Globally threatened species * Ogea Monarch (VU) – entire world population A2 Restricted-range species 11 species (out of 36 in Fiji), including the Blue-crowned Lory which is not in any other Fiji IBA. Non-bird biodiversity: No surveys have been undertaken.
Delineation rationale: 2012-12-17 (BL Secretariat): original polygon clipped to hi-res coastline (marine areas removed) following identification in October 2012 of new marine IBA offshore this site; site area consequently changed from 2000 ha to 1830 ha.
Habitats
Summary of habitats in KBA: In 1986, the islands were estimated to have a total population of c. 2,000 people who subsist on farming and fishing. Being raised coralline islands they retain extensive forest as the soil is too poor for commercial agriculture or coconut plantations. Less than 10% was estimated to have been cleared for subsistence agriculture. The remaining land is old-growth forest which varies in structure depending on the substrate and is stunted in higher land exposed to the southeast trade-winds.
Land use: agriculture
| IUCN Habitat | Coverage % | Habitat detail |
|---|---|---|
| Forest | 100 |
Threats
Summary of threats to biodiversity at KBA: Agriculture; Alien Invasive Species
| Threat level 1 | Threat level 2 | Threat level 3 | Timing |
|---|---|---|---|
| Invasive & other problematic species, genes & diseases | Invasive non-native/alien species/diseases | Named species | Ongoing |
| Climate change & severe weather | Storms & flooding | Only in the future |
Additional information
References: HOBCROFT, D. in litt. 2005 MAYR, E. (1933) Birds collected during the Whitney South Sea Expedition. XXV. Notes on the genera Myiagra and Mayrornis. American Museum Novit. 651. WATLING, D. (1988) Notes on the status and ecology of the Ogea Flycatcher Mayrornis versicolor. Bulletin of the British Ornithologists Club 108: 103–112.