Geranium maderense 

Scope: Global
Language: English

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Taxonomy [top]

Kingdom Phylum Class Order Family
Plantae Tracheophyta Magnoliopsida Geraniales Geraniaceae

Scientific Name: Geranium maderense Yeo

Assessment Information [top]

Red List Category & Criteria: Critically Endangered D ver 3.1
Year Published: 2011
Date Assessed: 2011-03-30
Assessor(s): Fernandes, F.
Reviewer(s): Carvalho, J.A. & Bilz, M.
Geranium maderense is endemic to Madeira with less than 50 remaining mature individuals. The population is stable but the habitat is declining due to urbanisation, infrastructure development, and the encroachment of invasive species. It is therefore classed as Critically Endangered and appropriate conservation measures are urgently needed.

Geographic Range [top]

Range Description:This plant is endemic to Madeira, Portugal, where it is found on north-facing slopes (Carvalho et al. in: Martín et al. 2008). The extent of occurrence is 267 km² (Commission of the European Communities 2009) and it is found at three locations.
Countries occurrence:
Portugal (Madeira)
Additional data:
Number of Locations:3
Range Map:Click here to open the map viewer and explore range.

Population [top]

Population:There are less than 50 remaining mature individuals, however, the population is stable (Carvalho et al. in: Martín et al. 2008).
Current Population Trend:Stable
Additional data:
Number of mature individuals:1-50
Population severely fragmented:No

Habitat and Ecology [top]

Habitat and Ecology:This plant grows on rocky cliffs and terraces with accumulation of soil (Carvalho et al. in: Martín et al. 2008). It can be found in the Habitats Directive listed habitat 1250 "Vegetated sea cliffs with endemic flora of the Macaronesian coasts" (Commission of the European Communities 2009).
Continuing decline in area, extent and/or quality of habitat:Yes

Threats [top]

Major Threat(s): The main threats are habitat degradation due to urban and infrastructure development as well as invasive species which cause competition for Geranium maderense. Natural factors such as storms and landslides can also affect this species (Carvalho et al. in: Martín et al. 2008).

Conservation Actions [top]

Conservation Actions: Geranium maderense is listed as priority species 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).

It is recommended to raise public awareness. Furthermore, the sites where the species grows should be managed, e.g., control of threatening factors such as invasive species, and protected, and the habitat needs to be restored. Reinforcement of subpopulations combined with reintroductions is furthermore recommended. Seeds are stored in Madeira Botanical Gardens seed bank.

Citation: Fernandes, F. 2011. Geranium maderense. The IUCN Red List of Threatened Species 2011: e.T162102A5537899. . Downloaded on 26 May 2018.
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