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Location Gabon, Nyanga,Ogooué-Maritime
Central coordinates 10o 0.00' East  2o 25.00' South
IBA criteria A1, A2, A3, A4i
Area 1,130,000 ha
Altitude 0 - 820m
Year of IBA assessment 2001





Site description The site comprises several contiguous protected areas, including the Petit Loango, Monts Doudou, Ouanga Plain and Moukalaba Reserves, and the ex-hunting reserves of Setté-Cama, Iguéla and Ngové-Ndogo, situated beside the coast in south-western Gabon, south-east of Port-Gentil. The whole comprises an exceptionally diverse and rich succession of habitats from the coastline through to grasslands and forest. Coastal habitats include beaches and estuarine waters, incorporating two large lagoons, Lagune Iguéla and Lagune Ndogo, mangroves and littoral thickets, coastal forests and savannas. These give way inland to lowland evergreen forests in which typical tree species include Aucoumea klaineana, Sacoglottis gabonensis, Desbordesia glaucescens, Dacryodes buettneri, Tetraberlinia moreliana, Monopetalanthus pellegrini, Tessmannia africana, Odyendyea gabonensis, Lophira alata, Klainedoxa gabonensis and Librevillea klainei. Further inland, in the Moukalaba area, other tree species appear, such as Dialium pachyphyllum, Toubaouate brevipaniculata, Autranella congolensis and Dacryodes heterotricha. These dry-land forests are interspersed with large stretches of mixed swamp-forests (characterized by Alstonia congensis, Anthocleista vogelii, Mitragyna ciliata, Raphia palms, Lecomtedoxa biraudii, Gilbertiodendron unijugum) and woodland patches in savannas. Grasslands are widespread both along the coast, where they include extensive seasonally waterlogged savannas and herbaceous swamps, and in the Moukalaba Reserve where they occur as tall grass savannas and wooded grasslands in which shrubby species such as Nauclea latifolia, Bridelia ferruginea and Crossopteryx febrifuga are common. The hilly Monts Doudou Reserve, highest point 820 m, represents a northern outlier of the Mayombe of the Congo, in which some submontane flora elements occur.

Populations of IBA trigger species

Species Season Period Population estimate Quality of estimate IBA Criteria IUCN Category
Black Guineafowl Agelastes niger resident  1999  present [units unknown]  A3  Least Concern 
Plumed Guineafowl Guttera plumifera resident  1999  present [units unknown]  A3  Least Concern 
Forest Francolin Francolinus lathami resident  1999  present [units unknown]  A3  Least Concern 
Hartlaub's Duck Pteronetta hartlaubii resident  1999  present [units unknown]  A1, A3  Least Concern 
Spot-breasted Ibis Bostrychia rara resident  1999  present [units unknown]  A3  Least Concern 
White-crested Tiger-heron Tigriornis leucolopha resident  1999  present [units unknown]  A3  Least Concern 
Congo Serpent-eagle Dryotriorchis spectabilis resident  1999  present [units unknown]  A3  Least Concern 
Chestnut-flanked Sparrowhawk Accipiter castanilius resident  1999  present [units unknown]  A3  Least Concern 
Red-thighed Sparrowhawk Accipiter erythropus resident  1999  present [units unknown]  A3  Least Concern 
Long-tailed Hawk Urotriorchis macrourus resident  1999  present [units unknown]  A3  Least Concern 
Cassin's Hawk-eagle Aquila africanus resident  1999  present [units unknown]  A3  Least Concern 
White-spotted Flufftail Sarothrura pulchra resident  1999  present [units unknown]  A3  Least Concern 
Nkulengu Rail Himantornis haematopus resident  1999  present [units unknown]  A3  Least Concern 
Grey-throated Rail Canirallus oculeus resident  1999  present [units unknown]  A3  Least Concern 
Royal Tern Sterna maxima winter  3,000 individuals  A4i  Least Concern 
Damara Tern Sterna balaenarum winter  present [units unknown]  A1  Near Threatened 
Afep Pigeon Columba unicincta resident  1999  present [units unknown]  A3  Least Concern 
Western Bronze-naped Pigeon Columba iriditorques resident  1999  present [units unknown]  A3  Least Concern 
Blue-headed Wood-dove Turtur brehmeri resident  1999  present [units unknown]  A3  Least Concern 
Psittacus erithacus resident  1999  present [units unknown]  A3  Not Recognised 
Guinea Turaco Tauraco persa resident  1999  present [units unknown]  A3  Least Concern 
Yellow-billed Turaco Tauraco macrorhynchus resident  1999  present [units unknown]  A3  Least Concern 
Yellow-throated Cuckoo Chrysococcyx flavigularis resident  1999  present [units unknown]  A3  Least Concern 
Black-throated Coucal Centropus leucogaster resident  1999  present [units unknown]  A3  Least Concern 
Gabon Coucal Centropus anselli resident  1999  present [units unknown]  A3  Least Concern 
Sandy Scops-owl Otus icterorhynchus resident  1999  present [units unknown]  A3  Least Concern 
Akun Eagle-owl Bubo leucostictus resident  1999  present [units unknown]  A3  Least Concern 
Vermiculated Fishing-owl Scotopelia bouvieri resident  1999  present [units unknown]  A3  Least Concern 
Maned Owl Jubula lettii resident  1999  present [units unknown]  A3  Data Deficient 
Sjostedt's Owlet Glaucidium sjostedti resident  1999  present [units unknown]  A3  Least Concern 
Bates's Nightjar Caprimulgus batesi resident  1999  present [units unknown]  A3  Least Concern 
Black Spinetail Telacanthura melanopygia resident  1999  present [units unknown]  A3  Least Concern 
Sabine's Spinetail Rhaphidura sabini resident  1999  present [units unknown]  A3  Least Concern 
Cassin's Spinetail Neafrapus cassini resident  1999  present [units unknown]  A3  Least Concern 
Bates's Swift Apus batesi resident  1999  present [units unknown]  A3  Least Concern 
Bare-cheeked Trogon Apaloderma aequatoriale resident  1999  present [units unknown]  A3  Least Concern 
Blue-throated Roller Eurystomus gularis resident  1999  present [units unknown]  A3  Least Concern 
Chocolate-backed Kingfisher Halcyon badia resident  1999  present [units unknown]  A3  Least Concern 
African Dwarf-kingfisher Ceyx lecontei resident  1999  present [units unknown]  A3  Least Concern 
White-bellied Kingfisher Alcedo leucogaster resident  1999  present [units unknown]  A3  Least Concern 
Black Bee-eater Merops gularis resident  1999  present [units unknown]  A3  Least Concern 
Merops muelleri resident  1999  present [units unknown]  A3  Not Recognised 
Black-headed Bee-eater Merops breweri resident  1999  present [units unknown]  A3  Least Concern 
Rosy Bee-eater Merops malimbicus breeding  1999  unknown [units unknown]  A3  Least Concern 
Black Dwarf Hornbill Tockus hartlaubi resident  1999  present [units unknown]  A3  Least Concern 
Red-billed Dwarf Hornbill Tockus camurus resident  1999  present [units unknown]  A3  Least Concern 
African Pied Hornbill Tockus fasciatus resident  1999  present [units unknown]  A3  Least Concern 
White-crested Hornbill Tropicranus albocristatus resident  1999  present [units unknown]  A3  Least Concern 
Piping Hornbill Bycanistes fistulator resident  1999  present [units unknown]  A3  Least Concern 
White-thighed Hornbill Bycanistes albotibialis resident  1999  present [units unknown]  A3  Least Concern 
Black-casqued Hornbill Ceratogymna atrata resident  1999  present [units unknown]  A3  Least Concern 
Naked-faced Barbet Gymnobucco calvus resident  1999  present [units unknown]  A3  Least Concern 
Bristle-nosed Barbet Gymnobucco peli resident  1999  present [units unknown]  A3  Least Concern 
Speckled Tinkerbird Pogoniulus scolopaceus resident  1999  present [units unknown]  A3  Least Concern 
Red-rumped Tinkerbird Pogoniulus atroflavus resident  1999  present [units unknown]  A3  Least Concern 
Yellow-throated Tinkerbird Pogoniulus subsulphureus resident  1999  present [units unknown]  A3  Least Concern 
Yellow-spotted Barbet Buccanodon duchaillui resident  1999  present [units unknown]  A3  Least Concern 
Hairy-breasted Barbet Tricholaema hirsuta resident  1999  present [units unknown]  A3  Least Concern 
Yellow-billed Barbet Trachyphonus purpuratus resident  1999  present [units unknown]  A3  Least Concern 
Cassin's Honeyguide Prodotiscus insignis resident  1999  present [units unknown]  A3  Least Concern 
Spotted Honeyguide Indicator maculatus resident  1999  present [units unknown]  A3  Least Concern 
Lyre-tailed Honeyguide Melichneutes robustus resident  1999  present [units unknown]  A3  Least Concern 
Buff-spotted Woodpecker Campethera nivosa resident  1999  present [units unknown]  A3  Least Concern 
Brown-eared Woodpecker Campethera caroli resident  1999  present [units unknown]  A3  Least Concern 
Gabon Woodpecker Dendropicos gabonensis resident  1999  present [units unknown]  A3  Least Concern 
Golden-crowned Woodpecker Thripias xantholophus resident  1999  present [units unknown]  A3  Least Concern 
Rufous-sided Broadbill Smithornis rufolateralis resident  1999  present [units unknown]  A3  Least Concern 
African Shrike-flycatcher Megabyas flammulatus resident  1999  present [units unknown]  A3  Least Concern 
Chestnut Wattle-eye Platysteira castanea resident  1999  present [units unknown]  A3  Least Concern 
White-spotted Wattle-eye Platysteira tonsa resident  1999  present [units unknown]  A3  Least Concern 
Chestnut-bellied Helmet-shrike Prionops caniceps resident  1999  present [units unknown]  A3  Least Concern 
Fiery-breasted Bush-shrike Malaconotus cruentus resident  1999  present [units unknown]  A3  Least Concern 
Red-eyed Puffback Dryoscopus senegalensis resident  1999  present [units unknown]  A3  Least Concern 
Large-billed Puffback Dryoscopus sabini resident  1999  present [units unknown]  A3  Least Concern 
Sooty Boubou Laniarius leucorhynchus resident  1999  present [units unknown]  A3  Least Concern 
Blue Cuckooshrike Coracina azurea resident  1999  present [units unknown]  A3  Least Concern 
Western Black-headed Oriole Oriolus brachyrhynchus resident  1999  present [units unknown]  A3  Least Concern 
Black-winged Oriole Oriolus nigripennis resident  1999  present [units unknown]  A3  Least Concern 
Shining Drongo Dicrurus atripennis resident  1999  present [units unknown]  A3  Least Concern 
Black-headed Paradise-flycatcher Terpsiphone rufiventer resident  1999  present [units unknown]  A3  Least Concern 
Blue-headed Crested-flycatcher Trochocercus nitens resident  1999  present [units unknown]  A3  Least Concern 
Rufous-vented Paradise-flycatcher Terpsiphone rufocinerea resident  1999  present [units unknown]  A3  Least Concern 
Dusky Crested-flycatcher Elminia nigromitrata resident  1999  present [units unknown]  A3  Least Concern 
Chestnut-capped Flycatcher Erythrocercus mccallii resident  1999  present [units unknown]  A3  Least Concern 
Grey-necked Picathartes Picathartes oreas resident  1999  present [units unknown]  A1, A2, A3  Vulnerable 
Forest Penduline-tit Anthoscopus flavifrons resident  1999  present [units unknown]  A3  Least Concern 
Tit-hylia Pholidornis rushiae resident  1999  present [units unknown]  A3  Least Concern 
African River-martin Pseudochelidon eurystomina breeding  1999  unknown [units unknown]  A1, A3  Data Deficient 
Square-tailed Saw-wing Psalidoprocne nitens resident  1999  present [units unknown]  A3  Least Concern 
White-throated Blue Swallow Hirundo nigrita resident  1999  present [units unknown]  A3  Least Concern 
Forest Swallow Hirundo fuliginosa resident  1999  present [units unknown]  A2, A3  Least Concern 
Chattering Cisticola Cisticola anonymus resident  1999  present [units unknown]  A3  Least Concern 
Apalis rufogularis resident  1999  present [units unknown]  A3  Not Recognised 
Yellow-browed Camaroptera Camaroptera superciliaris resident  1999  present [units unknown]  A3  Least Concern 
Olive-green Camaroptera Camaroptera chloronota resident  1999  present [units unknown]  A3  Least Concern 
Grey Greenbul Andropadus gracilis resident  1999  present [units unknown]  A3  Least Concern 
Ansorge's Greenbul Andropadus ansorgei resident  1999  present [units unknown]  A3  Least Concern 
Plain Greenbul Andropadus curvirostris resident  1999  present [units unknown]  A3  Least Concern 
Golden Greenbul Calyptocichla serina resident  1999  present [units unknown]  A3  Least Concern 
Honeyguide Greenbul Baeopogon indicator resident  1999  present [units unknown]  A3  Least Concern 
White-tailed Greenbul Baeopogon clamans resident  1999  present [units unknown]  A3  Least Concern 
Spotted Greenbul Ixonotus guttatus resident  1999  present [units unknown]  A3  Least Concern 
Simple Greenbul Chlorocichla simplex resident  1999  present [units unknown]  A3  Least Concern 
Swamp Greenbul Thescelocichla leucopleura resident  1999  present [units unknown]  A3  Least Concern 
Leaf-love Pyrrhurus scandens resident  1999  present [units unknown]  A3  Least Concern 
White-throated Greenbul Phyllastrephus albigularis resident  1999  present [units unknown]  A3  Least Concern 
Icterine Greenbul Phyllastrephus icterinus resident  1999  present [units unknown]  A3  Least Concern 
Xavier's Greenbul Phyllastrephus xavieri resident  1999  present [units unknown]  A3  Least Concern 
Common Bristlebill Bleda syndactylus resident  1999  present [units unknown]  A3  Least Concern 
Lesser Bristlebill Bleda notatus resident  1999  present [units unknown]  A3  Least Concern 
Green-backed Bulbul Criniger chloronotus resident  1999  present [units unknown]  A3  Least Concern 
Red-tailed Bulbul Criniger calurus resident  1999  present [units unknown]  A3  Least Concern 
White-bearded Bulbul Criniger ndussumensis resident  1999  present [units unknown]  A3  Least Concern 
Yellow-spotted Nicator Nicator chloris resident  1999  present [units unknown]  A3  Least Concern 
Yellow-throated Nicator Nicator vireo resident  1999  present [units unknown]  A3  Least Concern 
Yellow Longbill Macrosphenus flavicans resident  1999  present [units unknown]  A3  Least Concern 
Grey Longbill Macrosphenus concolor resident  1999  present [units unknown]  A3  Least Concern 
Violet-backed Hyliota Hyliota violacea resident  1999  present [units unknown]  A3  Least Concern 
Green Hylia Hylia prasina resident  1999  present [units unknown]  A3  Least Concern 
Rufous-crowned Eremomela Eremomela badiceps resident  1999  present [units unknown]  A3  Least Concern 
Green Crombec Sylvietta virens resident  1999  present [units unknown]  A3  Least Concern 
Lemon-bellied Crombec Sylvietta denti resident  1999  present [units unknown]  A3  Least Concern 
Blackcap Illadopsis Illadopsis cleaveri resident  1999  present [units unknown]  A3  Least Concern 
Brown Illadopsis Illadopsis fulvescens resident  1999  present [units unknown]  A3  Least Concern 
Purple-headed Glossy-starling Lamprotornis purpureiceps resident  1999  present [units unknown]  A3  Least Concern 
Chestnut-winged Starling Onychognathus fulgidus resident  1999  present [units unknown]  A3  Least Concern 
Narrow-tailed Starling Poeoptera lugubris resident  1999  present [units unknown]  A3  Least Concern 
White-tailed Ant-thrush Neocossyphus poensis resident  1999  present [units unknown]  A3  Least Concern 
Rufous Flycatcher-thrush Stizorhina fraseri resident  1999  present [units unknown]  A3  Least Concern 
Alethe diademata resident  1999  present [units unknown]  A3  Not Recognised 
Forest Robin Stiphrornis erythrothorax resident  1999  present [units unknown]  A3  Least Concern 
Lowland Akalat Sheppardia cyornithopsis resident  1999  present [units unknown]  A3  Least Concern 
African Forest Flycatcher Fraseria ocreata resident  1999  present [units unknown]  A3  Least Concern 
White-browed Forest Flycatcher Fraseria cinerascens resident  1999  present [units unknown]  A3  Least Concern 
Sooty Flycatcher Muscicapa infuscata resident  1999  present [units unknown]  A3  Least Concern 
Olivaceous Flycatcher Muscicapa olivascens resident  1999  present [units unknown]  A3  Least Concern 
Yellow-footed Flycatcher Muscicapa sethsmithi resident  1999  present [units unknown]  A3  Least Concern 
Cassin's Grey Flycatcher Muscicapa cassini resident  1999  present [units unknown]  A3  Least Concern 
Grey-throated Tit-flycatcher Myioparus griseigularis resident  1999  present [units unknown]  A3  Least Concern 
Scarlet-tufted Sunbird Anthreptes fraseri resident  1999  present [units unknown]  A3  Least Concern 
Mouse-brown Sunbird Anthreptes gabonicus resident  1999  present [units unknown]  A3  Least Concern 
Violet-tailed Sunbird Anthreptes aurantium resident  1999  present [units unknown]  A3  Least Concern 
Green Sunbird Anthreptes rectirostris resident  1999  present [units unknown]  A3  Least Concern 
Little Green Sunbird Nectarinia seimundi resident  1999  present [units unknown]  A3  Least Concern 
Bates's Sunbird Nectarinia batesi resident  1999  present [units unknown]  A3  Least Concern 
Reichenbach's Sunbird Nectarinia reichenbachii resident  1999  present [units unknown]  A3  Least Concern 
Blue-throated Brown Sunbird Nectarinia cyanolaema resident  1999  present [units unknown]  A3  Least Concern 
Carmelite Sunbird Nectarinia fuliginosa resident  1999  present [units unknown]  A3  Least Concern 
Green-throated Sunbird Nectarinia rubescens resident  1999  present [units unknown]  A3  Least Concern 
Tiny Sunbird Nectarinia minulla resident  1999  present [units unknown]  A3  Least Concern 
Johanna's Sunbird Nectarinia johannae resident  1999  present [units unknown]  A3  Least Concern 
Superb Sunbird Nectarinia superba resident  1999  present [units unknown]  A3  Least Concern 
Loango Weaver Ploceus subpersonatus resident  1999  present [units unknown]  A1, A2, A3  Vulnerable 
Orange Weaver Ploceus aurantius resident  1999  present [units unknown]  A3  Least Concern 
Vieillot's Black Weaver Ploceus nigerrimus resident  1999  present [units unknown]  A3  Least Concern 
Yellow-mantled Weaver Ploceus tricolor resident  1999  present [units unknown]  A3  Least Concern 
Maxwell's Black Weaver Ploceus albinucha resident  1999  present [units unknown]  A3  Least Concern 
Black-throated Malimbe Malimbus cassini resident  1999  present [units unknown]  A3  Least Concern 
Red-bellied Malimbe Malimbus erythrogaster resident  1999  present [units unknown]  A3  Least Concern 
Gray's Malimbe Malimbus nitens resident  1999  present [units unknown]  A3  Least Concern 
Crested Malimbe Malimbus malimbicus resident  1999  present [units unknown]  A3  Least Concern 
Red-headed Malimbe Malimbus rubricollis resident  1999  present [units unknown]  A3  Least Concern 
Woodhouse's Antpecker Parmoptila woodhousei resident  1999  present [units unknown]  A3  Least Concern 
White-breasted Negrofinch Nigrita fusconotus resident  1999  present [units unknown]  A3  Least Concern 
Chestnut-breasted Negrofinch Nigrita bicolor resident  1999  present [units unknown]  A3  Least Concern 
Pale-fronted Negrofinch Nigrita luteifrons resident  1999  present [units unknown]  A3  Least Concern 
Western Bluebill Spermophaga haematina resident  1999  present [units unknown]  A3  Least Concern 
Long-legged Pipit Anthus pallidiventris resident  1999  present [units unknown]  A3  Least Concern 

Protected areas

Protected area Designation Area (ha) Relationship with IBA Overlap with IBA (ha)  
Iguela Hunting Area 79,816 protected area contains site 180,000  
Monts Doudou Wildlife Management Area 332,000 protected area contained by site 332,000  
Moukalaba Doudou National Park 450,398 protected area contained by site 449,548  
Ngove-Ndogo Hunting Area 278,168 protected area contains site 250,000  
Ouanga Plain Faunal Reserve 10,887 protected area contained by site 20,000  
Petit Loango Faunal Reserve 50,000 protected area contained by site 50,000  
Petit Loango Wetlands of International Importance (Ramsar) 480,000 protected area contained by site 480,000  
Setté Cama Wetlands of International Importance (Ramsar) 220,000 protected area contained by site 220,000  
Sette-Cama Hunting Area 240,082 protected area contains site 200,000  

Habitats

IUCN habitat Habitat detail Extent (% of site)
Unknown   1%
Wetlands (inland)   1%
Shrubland   1%
Grassland   3%
Forest   91%

Land use

Land-use Extent (% of site)
forestry -
nature conservation and research -

Other biodiversity The site is rich in large forest mammals such as Loxodonta africana (EN), Tragelaphus spekei (LR/nt), Gorilla gorilla (EN) and Pan troglodytes (EN), and Trichechus senegalensis (VU) occurs in the lagoons and estuaries. The Moukalaba Reserve holds the last important population in Gabon of the ungulate Kobus ellipsiprymmus (LR/cd). Three species of crocodile, including Crocodylus cataphractus (DD) and Osteolaemus tetraspis (VU), live in the complex.

References Sargeant (1993), Schepers and Marteijn (1993).

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Recommended citation  BirdLife International (2014) Important Bird Areas factsheet: Gamba Protected Areas Complex. Downloaded from http://www.birdlife.org on 17/04/2014

To provide new information to update this factsheet or to correct any errors, please email BirdLife