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Location Tanzania, Zanzibar and Pemba
Central coordinates 39o 13.00' East  6o 33.00' South
IBA criteria A1, A2, A3
Area 556 ha
Altitude 0 - 20m
Year of IBA assessment 2001

Site description Jozani Forest Reserve is the only remaining forest left on Unguja, the main island of Zanzibar. It is a small, much modified groundwater-forest, which includes a 12 ha plantation. Some tree species, such as Calyophyllum inophyllum, initially thought to have been introduced, are now believed to be indigenous. Even in heavily exploited areas a variety of tree species still occur and are regenerating. There has been no commercial exploitation of Jozani since 1990.

Key Biodiversity See Box and Tables 2 and 3 for key species. The annotated checklist for Zanzibar lists 217 species. All forest species known for Unguja occur at Jozani as it holds virtually all the remaining forest habitat on the island. Birds include three endemic races: Tauraco fischeri zanzibaricus, Andropadus virens zanzibaricus and Nectarinia veroxii zanzibarica. A fourth, Nectarinia olivacea granti, is shared only with Pemba island and a fifth, Cercotrichas quadrivrigata greenwayi, is shared with Mafia island.

Non-bird biodiversity: The primate Colobus badius kirkii (EN) is endemic to the island and 30% of the total population of 2,400 is centred on Jozani Forest, which must be considered essential to its long-term survival. The near-endemic ungulate Cephalophus adersi (EN) has its stronghold on Unguja with a population estimated at below 2,000, in five fragmented sub-populations, including one at Jozani.

Populations of IBA trigger species

Species Season Period Population estimate Quality of estimate IBA Criteria IUCN Category
Brown-headed Parrot Poicephalus cryptoxanthus resident  2000  present  A3  Least Concern 
Fischer's Turaco Tauraco fischeri resident  2000  present  A1, A2, A3  Near Threatened 
Mangrove Kingfisher Halcyon senegaloides resident  2000  present  A3  Least Concern 
Black-bellied Glossy-starling Lamprotornis corruscus resident  2000  present  A3  Least Concern 
East Coast Akalat Sheppardia gunningi resident  2000  present  A1, A3  Near Threatened 
Mouse-coloured Sunbird Nectarinia veroxii resident  2000  present  A3  Least Concern 
Zanzibar Bishop Euplectes nigroventris resident  2000  unknown  A3  Least Concern 

Protected areas

Protected area Designation Area (ha) Relationship with IBA Overlap with IBA (ha)  
Jozani Forest Reserve 0 protected area contained by site 0  
Jozani-Chwaka Bay National Park 500,000 is identical to site 556  


IUCN habitat Habitat detail Extent (% of site)
Forest   100%

Land use

Land-use Extent (% of site)
forestry -
nature conservation and research -
tourism/recreation -
water management -

References Archer and Iles (1998), Packenham (1979), Robins (1976).

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Recommended citation  BirdLife International (2016) Important Bird and Biodiversity Area factsheet: Jozani Chwaka Bay National Park. Downloaded from on 25/10/2016

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