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Podocarpus rostratus

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Taxonomy [top]

Kingdom Phylum Class Order Family
PLANTAE TRACHEOPHYTA PINOPSIDA PINALES PODOCARPACEAE

Scientific Name: Podocarpus rostratus
Species Authority: L.Laurent
Taxonomic Notes: This assessment includes collections determined as Podocarpus woltzii, which is regarded by David J. de Laubenfels as a synonym of P. rostratus.

Assessment Information [top]

Red List Category & Criteria: Endangered B2ab(ii,iii,v) ver 3.1
Year Published: 2013
Date Assessed: 2011-07-11
Assessor(s): Farjon, A.
Reviewer(s): Thomas, P. & Luscombe, D
Justification:
The area of occupancy estimated here (175 km2) may already be much less in the field, as some localities are based on historical herbarium collections, where it has not been collected since. There is no doubt about the continuing decline, so the species meets criterion B2  for listing as Endangered.
History:
2007 Endangered
1998 Data Deficient (Oldfield et al. 1998)
1998 Data Deficient
1997 Vulnerable (Walter and Gillett 1998)

Geographic Range [top]

Range Description: Endemic to Madagascar occurring in  Antsiranana, Fianarantsoa, Mahajanga, and Toamasina Provinces.
Countries:
Native:
Madagascar
Range Map: Click here to open the map viewer and explore range.

Population [top]

Population: The population is thought to be decreasing. Subpopulations are severely fragmented.
Population Trend: Decreasing

Habitat and Ecology [top]

Habitat and Ecology: Podocarpus rostratus is recorded from rocky slopes on silicious rocks; the elevation is given as 1,800-2,400 m a.s.l. (herbarium data), but the range may be greater according to GIS calculations and information from literature. It occurs in ericaceous scrubland near the summits of mountains, a vegetation type prone to fires. It is not well adapted to fires and therefore occupies either open, rocky places with little vegetation, or wetter sites along streams.
Systems: Terrestrial

Use and Trade [top]

Use and Trade: No uses have been recorded of this species.

Threats [top]

Major Threat(s): This species is known from three highly disjunct subpopulations. The greater number of herbarium collections is from the northern subpopulation and only one from each of the eastern and southern subpopulations (over 1,000 km apart), made in 1924-25 at locations which have probably since been cleared. All but one of the collections were made more than 50 years ago. The area of occupancy (AOO) of the northern population is less than 175 km2 and only one subpopulation is inside a protected area, a collection was made there recently (2005). Serious decline of small subpopulations is therefore inferred for this species, which is susceptible to fires.

Conservation Actions [top]

Conservation Actions: One locality is in a protected area: near Sofia in Mahajanga Province.

Citation: Farjon, A. 2013. Podocarpus rostratus. The IUCN Red List of Threatened Species. Version 2014.2. <www.iucnredlist.org>. Downloaded on 19 September 2014.
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