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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 Eagle-owl Bubo bubo	LC	resident	2009	7-10 breeding pairs	C6
Short-toed Snake-eagle Circaetus gallicus	LC	breeding	2008	6-10 breeding pairs	C6
Bonelli's Eagle Aquila fasciata	LC	resident	2005	6 breeding pairs	C2, C6
Black Kite Milvus migrans	LC	breeding	1997	40-50 breeding pairs	C6

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

Year	Protected Area	Designation	% overlap with IBA
1992	Riba-roja	Plan Especial de Protección (PEIN)	14
1992	Ribera de l`Algars	Plan Especial de Protección (PEIN)	2
1992	Tossals d` Almatret	Plan Especial de Protección (PEIN)	2
1997	Tossals d'Almatret i Riba Roja	Site of Community Importance (Habitats Directive)	16
1997	Ribera de l'Algars	Site of Community Importance (Habitats Directive)	2
2000	Río Matarranya	Site of Community Importance (Habitats Directive)	3
2000	Río Algars	Site of Community Importance (Habitats Directive)	<1
2001	Matarraña - Aiguabarreix	Special Protection Area (Birds Directive)	81
2005	Tossals d'Almatret i Riba Roja	Special Protection Area (Birds Directive)	16
2006	Ribera de l'Algars	Special Protection Area (Birds Directive)	3
2006	Secans del Segrià i Utxesa	Site of Community Importance (Habitats Directive)	1

Habitat1	Habitat detail	% of IBA
Forest	Native coniferous woodland, Alluvial and very wet forest	26
Rocky areas (eg. inland cliffs, mountain peaks)	Inland cliffs	26
Shrubland	Sclerophyllous scrub, garrigue and maquis	26
Artificial/Terrestrial	Arable land, Perennial crops, orchards and groves, Forestry plantations	-
Wetlands (inland)	Rivers and streams	-

1. IUCN Habitat classification.

Land use	% of IBA
hunting	100
forestry	70
agriculture	30

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Recommended citation
BirdLife International (2024) Important Bird Area factsheet: Lower course of the river Matarraña-Ribarroja (Spain). Downloaded from https://datazone.birdlife.org/site/factsheet/lower-course-of-the-river-matarraña-ribarroja-iba-spain on 22/11/2024.