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The site was identified as important in 2009 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
Corncrake Crex crex	LC	breeding	2007-2009	4 males	C6
Black Kite Milvus migrans	LC	breeding	2003-2009	10-16 breeding pairs	B2, C6
Middle Spotted Woodpecker Leiopicus medius	LC	resident	2000-2009	15-20 breeding pairs	B3, C6

1. The current IUCN Red List category. The category at the time of the IBA criteria assessment (2009) may differ.

Ideally the conservation status of the IBA will have been checked regularly since the site was first identified in 2009. The most recent assessment (2009) is shown below.

State (condition of the trigger species' populations)
Species	Reference	Actual	Units	% remaining	Result
Grey Partridge Perdix perdix	30	20	breeding pairs	67	unfavourable
Northern Lapwing Vanellus vanellus	40	10	breeding pairs	25	very unfavourable
Milvus migrans	10	16	breeding pairs	100	favourable

Pressure (threats to the trigger species and/or their habitats)
Threat	Timing	Scope	Severity	Result
Human intrusions and disturbance	happening now	some of area/population (10-49%)	slow but significant deterioration	medium

Response (conservation actions taken for the trigger species and/or their habitats)
Protected areas	Management plan	Other action	Result
Some of site covered (10-49%)	No management plan exists but the management planning process has begun	Some limited conservation initiatives are in place	low

Year	Protected Area	Designation	% overlap with IBA
1981	Mondercange-Kazebaach	Humid Zone	1
1988	Lei (Bertrange)	Zones protégées d'intérêt national - Réserve naturelle	2
1988	Boufferdanger Muer (Bascharage-Clemency)	Zones protégées d'intérêt national - Réserve naturelle	<1
1988	Hautcharage-Boufferdanger Muer	Humid Zone	<1
1989	Hautcharage-Griechten	Forest Reserve	5
1989	Dahlem-Asselborner Muer	Humid Zone	1
1996	Bertrange - Greivelserhaff / Bouferterhaff	Site of Community Importance (Habitats Directive)	12
1996	Hautcharage / Dahlem - Asselborner et Boufferdanger Muer	Site of Community Importance (Habitats Directive)	5
2002	Massif forestier du Aesing	Site of Community Importance (Habitats Directive)	1
2003	Sanem - Groussebesch / Schouweiler - Bitchenheck	Zones protégées d'intérêt communautaire - Zones Habitats ZSC	2
2003	Sanem - Groussebesch / Schouweiler - Bitchenheck	Site of Community Importance (Habitats Directive)	2
2004	Bertrange - Greivelserhaff / Bouferterhaff	Zones protégées d'intérêt communautaire - Zones Habitats ZSC	12
2004	Hautcharage / Dahlem - Asselborner et Boufferdanger Muer	Zones protégées d'intérêt communautaire - Zones Habitats ZSC	4
2004	Massif forestier du Aesing	Zones protégées d'intérêt communautaire - Zones Habitats ZSC	1
2005	Enneschte Bësch (Bertrange)	Zones protégées d'intérêt national - Réserve forestière intégrale	2
2015	Région du Lias moyen	Special Protection Area (Birds Directive)	83
2015	Région du Lias moyen	Zones protégées d'intérêt communautaire - Zones Oiseaux ZPS	83
2017	Hautcharage - Griechten	Protected Area	4

Habitat1	Habitat detail	% of IBA
Grassland	Humid grasslands, Mesophile grasslands	49
Artificial/Terrestrial	Arable land, Perennial crops, orchards and groves, Forestry plantations	26
Forest	Alluvial and very wet forest, Broadleaved deciduous woodland, Mixed woodland	25
Shrubland		minor (<10)
Wetlands (inland)	Rivers and streams, Standing freshwater	minor (<10)

1. IUCN Habitat classification.

Land use	% of IBA
rangeland/pastureland	49
agriculture	24
forestry	22
tourism/recreation	minor (<10)
nature conservation and research	minor (<10)
hunting	-

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Recommended citation
BirdLife International (2024) Important Bird Area factsheet: Region of the Middle Lias (Luxembourg). Downloaded from https://datazone.birdlife.org/site/factsheet/region-of-the-middle-lias-iba-luxembourg on 22/11/2024.