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The site was identified as internationally important for bird conservation in 2010 because it was regularly supporting significant populations of the species listed below, meeting ('triggering') IBA criteria.

Populations meeting IBA criteria ('trigger species') at the site:

Species	Red List	Season (year/s of estimate)	Size	IBA criteria
Tooth-billed Pigeon Didunculus strigirostris	CR	resident (2010)	< 50	A1, A2
Many-coloured Fruit-dove Ptilinopus perousii	LC	resident (-)	present	A2
Samoan Fruit-dove Ptilinopus fasciatus	LC	resident (-)	present	A2
Flat-billed Kingfisher Todiramphus recurvirostris	LC	resident (-)	present	A2
Blue-crowned Lorikeet Vini australis	LC	resident (-)	present	A2
Mao Gymnomyza samoensis	EN	resident (2010)	< 50	A1, A2
Polynesian Wattled Honeyeater Foulehaio carunculatus	LC	resident (-)	present	A2
Cardinal Myzomela Myzomela cardinalis	LC	resident (-)	present	A2
Samoan Whistler Pachycephala flavifrons	LC	resident (-)	present	A2
Polynesian Triller Lalage maculosa	LC	resident (-)	present	A2
Samoan Triller Lalage sharpei	NT	resident (-)	present	A1, A2
Samoan Fantail Rhipidura nebulosa	LC	resident (-)	present	A2
Samoan Flycatcher Myiagra albiventris	LC	resident (-)	present	A1, A2
Polynesian Starling Aplonis tabuensis	LC	resident (-)	present	A2
Samoan Starling Aplonis atrifusca	LC	resident (-)	present	A2
Red-headed Parrotfinch Erythrura cyaneovirens	LC	resident (-)	present	A2

Ideally the conservation status of the IBA will have been checked regularly since the site was first identified in 2010. The most recent assessment (2010) is shown below.

Pressure (threats to the trigger species and/or their habitats)
Threat	Timing	Scope	Severity	Result
Agricultural expansion and intensification	happe­ning now	some of popul­ation/area (10–49%)	slow decline (1–10% over 3 gener­ations)	medium
Climate change and severe weather	likely in long term (>4 years)	most of popul­ation/area (50–90%)	moderate decline (10–30% over 3 gener­ations)	medium
Invasive and other problematic species and genes	happe­ning now	most of popul­ation/area (50–90%)	no or slight decline (<1% over 3 gener­ations)	low
Residential and commercial development	happe­ning now	few indivi­duals/small area (<10%)	moderate decline (10–30% over 3 gener­ations)	low

Response (conservation actions taken for the trigger species and/or their habitats)
Designation	Planning	Action	Result
Some of area covered (10–49%)	No management plan exists, but the management planning process has begun	Very little or no conservation action taking place	low

Year	Protected Area	Designation (management category)	% coverage of IBA
1958	Mt Vaea Botanical Reserve	Nature Reserve (II)	1
1978	Tusitala Historic	Nature Reserve (IV)	-
2003	Lake Lanoto'o	National Park (II)	31

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Recommended citation
BirdLife International (2024) Important Bird Area factsheet: Apia Catchments (Samoa). Downloaded from https://datazone.birdlife.org/site/factsheet/apia-catchments-iba-samoa on 27/12/2024.