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The site was identified as internationally important for bird conservation in 1999 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
Madagascar Teal Anas bernieri	EN	resident (1998)	67 birds	A1, A2, A3, A4i
Madagascar Heron Ardea humbloti	EN	resident (1998)	present	A1, A2, A3
Black-banded Plover Charadrius thoracicus	VU	resident (1998)	61 birds	A1, A2, A3, A4i
Madagascar Jacana Actophilornis albinucha	EN	resident (1998)	present	A2
Roseate Tern Sterna dougallii	LC	non-breeding (1998)	883 birds	A4i
Lesser Crested Tern Thalasseus bengalensis	LC	non-breeding (1998)	3,200 birds	A4i
Madagascar Fish-eagle Haliaeetus vociferoides	CR	resident (1998)	present	A1, A2, A3
Sickle-billed Vanga Falculea palliata	LC	resident (1998)	present	A3
Sakalava Weaver Ploceus sakalava	LC	resident (1998)	present	A3

Ideally the conservation status of the IBA will have been checked regularly since the site was first identified in 1999. The most recent assessment (2017) is shown below.

State (condition of the trigger species' habitats)
Habitat	Quantity (% remaining)	Quality (% carrying capacity)	Result
Forest	moderate (70–90%)	moderate (70–90%)	poor
Marine Coastal/Supratidal	moderate (70–90%)	moderate (70–90%)	poor

Pressure (threats to the trigger species and/or their habitats)
Threat	Timing	Scope	Severity	Result
Natural system modifications	happe­ning now	most of popul­ation/area (50–90%)	rapid decline (>30% over 3 gener­ations)	very high
Agricultural expansion and intensification	happe­ning now	most of popul­ation/area (50–90%)	moderate decline (10–30% over 3 gener­ations)	high
Biological resource use	happe­ning now	most of popul­ation/area (50–90%)	moderate decline (10–30% over 3 gener­ations)	high
Pollution	happe­ning now	some of popul­ation/area (10–49%)	slow decline (1–10% over 3 gener­ations)	medium

Response (conservation actions taken for the trigger species and/or their habitats)
Designation	Planning	Action	Result
Unknown	A compre­hensive and appropriate management plan exists that aims to maintain or improve the populations of qualifying bird species	Unknown	low

Habitat	% of IBA	Habitat detail
Forest	major (>10)
Wetlands (inland)	-	Freshwater lakes and pools

Land use	% of IBA
agriculture	-
fisheries/aquaculture	-

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Recommended citation
BirdLife International (2024) Important Bird Area factsheet: Tambohorano Wetland NPA (Madagascar). Downloaded from https://datazone.birdlife.org/site/factsheet/tambohorano-wetland-npa-iba-madagascar on 23/12/2024.