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The site was identified as important in 2011 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 List1	Season	Year(s)	Size	IBA criteria
Eurasian Spoonbill Platalea leucorodia	LC	passage	2009	4-240 individuals	A4i, B1i, C2
Eurasian Curlew Numenius arquata	NT	winter	2009	300-571 individuals	A1, C1
Black-tailed Godwit Limosa limosa	NT	winter	2009	350-850 individuals	A1, C1
Dunlin Calidris alpina	NT	winter	2009	5,045-8,045 individuals	B1i, C2

1. The current IUCN Red List category. The category at the time of the IBA criteria assessment (2011) may differ.

Ideally the conservation status of the IBA will have been checked regularly since the site was first identified in 2011. The most recent assessment (2008) is shown below.

State (condition of the trigger species' populations)
Species	Reference	Actual	Units	% remaining	Result
Grey Heron Ardea cinerea	155	250	individuals	100	favourable
Dunlin Calidris alpina	4,267	4,000	individuals	94	favourable

State (condition of the trigger species' habitats)
Habitat	Quantity (% remaining)	Quality (% carrying capacity)	Result
Marine Intertidal	moderate (70-90%)	moderate (70-90%)	unfavourable
Marine Neritic	moderate (70-90%)	moderate (70-90%)	unfavourable

Pressure (threats to the trigger species and/or their habitats)
Threat	Timing	Scope	Severity	Result
Pollution	happening now	whole area/population (>90%)	very rapid to severe deterioration	very high
Agricultural expansion and intensification	happening now	some of area/population (10-49%)	very rapid to severe deterioration	high
Natural system modifications	happening now	some of area/population (10-49%)	very rapid to severe deterioration	high
Climate change and severe weather	happening now	some of area/population (10-49%)	very rapid to severe deterioration	high
Residential and commercial development	happening now	some of area/population (10-49%)	moderate to rapid deterioration	high
Biological resource use	happening now	majority/most of area/population (50-90%)	moderate to rapid deterioration	high
Human intrusions and disturbance	happening now	majority/most of area/population (50-90%)	moderate to rapid deterioration	high
Invasive and other problematic species and genes	happening now	majority/most of area/population (50-90%)	moderate to rapid deterioration	high
Transportation and service corridors	happening now	some of area/population (10-49%)	slow but significant deterioration	medium
Energy production and mining	happening now	small area/few individuals (<10%)	slow but significant deterioration	low

Response (conservation actions taken for the trigger species and/or their habitats)
Protected areas	Management plan	Other action	Result
Little/none of site covered (<10%)	No management planning has taken place	Very little or no conservation action taking place	negligible

Year	Protected Area	Designation	% overlap with IBA
-	Islas Atlanticas	Marine Protected Area (OSPAR)	5
1989	Complejo intermareal Umia-Grove	Ramsar Site, Wetland of International Importance	49
1992	Complexo Dunar de Corrubedo e Lagoas de Carregal e Vixán	Parque Natural	16
1993	Complejo de Corrubedo	Ramsar Site, Wetland of International Importance	14
1999	Complexo húmido de Corrubedo	Site of Community Importance (Habitats Directive)	26
2000	Complexo Ons - O Grove	Site of Community Importance (Habitats Directive)	43
2001	Complexo litoral de Corrubedo	Special Protection Area (Birds Directive)	16
2002	Marítimo-Terrestre de las Islas Atlánticas de Galicia	Parque Nacional	5
2004	Complexo Ons-O Grove	Zona de Especial Protección de los Valores Naturales	49
2004	Complexo intermareal Umia-O Grove A Lanzada, punta Carreirón e lagoa Bodeira	Zona de Especial Protección de los Valores Naturales	47
2004	Complexo intermareal Umia-O Grove, A Lanzada, punta Carreirón e lagoa Bodeira	Humedal Protegido	45
2004	Complexo húmido de Corrubedo	Zona de Especial Protección de los Valores Naturales	26
2004	Complexo litoral de Corrubedo	Zona de Especial Protección de los Valores Naturales	16
2004	Complexo das Praias, Duna e lagoa de Corrubedo	Humedal Protegido	16
2006	Complexo intermareal Umia - O Grove; A Lanzada, punta Carreirón e lagoa Bodeira	Special Protection Area (Birds Directive)	43
2014	Espacio marino de las Rias Baixas de Galicia	Marine Protected Area (OSPAR)	4
2014	Espacio marino de las Rías Baixas de Galicia	Special Protection Area (Birds Directive)	4

The Local Conservation Group(s) listed below are working to conserve this IBA.

Name	Year formed
Colectivo Ecoloxista do Salnés	0
SEO/Pontevedra	0

For more information on BirdLife's work with Local Conservation Groups, please click here.

Habitat1	Habitat detail	% of IBA
Marine Neritic		40
Artificial/Terrestrial	Arable land, Forestry plantations	10
Marine Coastal/Supratidal		major (>10)
Marine Intertidal		major (>10)

1. IUCN Habitat classification.

Land use	% of IBA
not utilised	60
fisheries/aquaculture	30
tourism/recreation	5
agriculture	5

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Recommended citation
BirdLife International (2024) Important Bird Area factsheet: Ría de Arosa (O Grove) estuary (Spain). Downloaded from https://datazone.birdlife.org/site/factsheet/ría-de-arosa-(o-grove)-estuary-iba-spain on 24/11/2024.