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The site was identified as internationally important for bird conservation in 2021 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
Scarlet Ibis Eudocimus ruber	LC	resident (2014)	5,000 birds	A4, B3a
Grey Plover Pluvialis squatarola	VU	non-breeding (2011)	1,200 birds	B3a
Semipalmated Plover Charadrius semipalmatus	LC	non-breeding (2013)	2,000 birds	A4, B3a
Red Knot Calidris canutus	NT	non-breeding (2018–2020)	25–5,930 birds	B1a, B3a
Semipalmated Sandpiper Calidris pusilla	NT	non-breeding (2011)	6,000 birds	B1a, B3a

Ideally the conservation status of the IBA will have been checked regularly since the site was first identified in 2021. The most recent assessment (2008) is shown below.

Pressure (threats to the trigger species and/or their habitats)
Threat	Timing	Scope	Severity	Result
Residential and commercial development	happe­ning now	some of popul­ation/area (10–49%)	slow decline (1–10% over 3 gener­ations)	medium
Agricultural expansion and intensification	happe­ning now	few indivi­duals/small area (<10%)	no or slight decline (<1% over 3 gener­ations)	low
Biological resource use	happe­ning now	few indivi­duals/small area (<10%)	no or slight decline (<1% over 3 gener­ations)	low

Response (conservation actions taken for the trigger species and/or their habitats)
Designation	Planning	Action	Result
Not assessed	Not assessed	Not assessed	not assessed

Year	Protected Area	Designation (management category)	% coverage of IBA
1990	Área De Proteção Ambiental De Algodoal-Maiandeua	Área de Proteção Ambiental (V)	<1
1991	Área De Proteção Ambiental Das Reentrâncias Maranhenses	Área de Proteção Ambiental (V)	54
2002	Reserva Extrativista Mae Grande De Curuça	Reserva Extrativista (VI)	2
2002	Reserva Extrativista Maracanã	Reserva Extrativista (VI)	1
2002	Reserva Extrativista São João Da Ponta	Reserva Extrativista (VI)	<1
2002	Mãe Grande de Curuçá	Extractive Reserve (VI)	2
2004	Reserva Extrativista De Cururupu	Reserva Extrativista (VI)	9
2005	Reserva Extrativista Marinha Arai-Peroba	Reserva Extrativista (VI)	4
2005	Reserva Extrativista Marinha De Gurupi-Piriá	Reserva Extrativista (VI)	3
2005	Reserva Extrativista Marinha Caetétaperaçu	Reserva Extrativista (VI)	2
2005	Reserva Extrativista Marinha Tracuateua	Reserva Extrativista (VI)	2
2005	Araí-Peroba	Marine Extractive Reserve (VI)	1
2005	Caeté-Taperaçú	Marine Extractive Reserve (VI)	2
2005	Tracuateua	Marine Extractive Reserve (VI)	2
2005	Gurupi-Piriá	Marine Extractive Reserve (VI)	3
2014	Reserva Extrativista Marinha Mocapajuba	Reserva Extrativista (VI)	1
2014	Reserva Extrativista Marinha Mestre Lucindo	Reserva Extrativista (VI)	1
2014	Reserva Extrativista Marinha Cuinarana	Reserva Extrativista (VI)	<1
2018	Amazon Estuary and its Mangroves	Ramsar Site, Wetland of International Importance (VI)	25

Habitat	% of IBA	Habitat detail
Forest	major (>10)	Mangrove; White sand forest
Marine Intertidal	major (>10)
Wetlands (inland)	-	Freshwater lakes and pools; Freshwater marshes/swamps

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Recommended citation
BirdLife International (2024) Important Bird Area factsheet: Reentrâncias Maranhenses / Paraenses (Brazil). Downloaded from https://datazone.birdlife.org/site/factsheet/reentrâncias-maranhenses--paraenses-iba-brazil on 06/12/2024.