Overview
Distribution
Range Description
This species is endemic to northcentral Portugal, where it occurs in the basin of the rivers Mondego, Seia and Cobral (Sampaio 1946, Franco and Afonso 1994). Its geographic range is 1,043 km² (Commission of the European Communities 2009). It is very abundant along the Seia river valley and also abundant along the Mondego, but becomes more scarce along the river Cobral. It also occurs outside this area spread over the Mondego valley, until at least 30 km to the north. The area occupied by the species reaches at least 7,000 hectares. The sites outside the Mondego river were not surveyed, so that the occupied area might be bigger than expected (ICN 2006).
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Ecology
Habitat
Habitat and Ecology
Habitat and Ecology
Systems
Narcissus scaberulus grows preferably in rocky outcrops of granitic origin. It is also frequent in poor soils or in scrubby sands. It can be found in the following Habitats Directive listed habitats (Commission of the European Communities 2009):
- 4030 European dry heaths
- 5230 Arborescent matorral with Laurus nobilis
- 8220 Siliceous rocky slopes with chasmophytic vegetation
- 8230 Siliceous rock with pioneer vegetation of the Sedo-Scleranthion or of the Sedo albi-Veronicion dillenii
- 9230 Galicio-Portuguese oak woods with Quercus robur and Quercus pyrenaica
- 9330 Quercus suber forests
Systems
- Terrestrial
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Conservation
Conservation Status
IUCN Red List Assessment
Red List Category
LC
Least Concern
Red List Criteria
Version
3.1
Year Assessed
2011
Assessor/s
Barreto Caldas, F
Reviewer/s
Bilz, M. & Lutz, M.L.
Contributor/s
Justification
Narcissus scaberulus is a Portuguese endemic from the Mondega valley. It is abundant along the rivers and does not face major threats. Potential threats include the afforestation of its area. It is therefore classed as Least Concern for the moment.
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Trends
Population
Population
Population Trend
It has been estimated that the population is around 10,000 individuals with an unknown population trend (Commission of the European Communities 2009). The populations are not fragmented (ICN 2006).
Population Trend
Unknown
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Threats
Threats
Major Threats
The threats are negligible. Expansion of forest plantations could reduce its range. As the species prefers poor soils there are no conflicts with agricultural expansion expected.
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Management
Conservation Actions
Conservation Actions
Listed on Annex II of the Habitats Directive and under Appendix I of the Convention on the Conservation of European Wildlife and Natural Habitats (Bern Convention).
The site Carregal do Sal was mainly established because of the presence of Narcissus scaberulus. It is recommended to control changes in land use such as afforestation and grazing by goats and to forbid quarrying on the sites (ICN 2006).
The site Carregal do Sal was mainly established because of the presence of Narcissus scaberulus. It is recommended to control changes in land use such as afforestation and grazing by goats and to forbid quarrying on the sites (ICN 2006).
© International Union for Conservation of Nature and Natural Resources
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IUCN
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