Podocarpus nakaii 


Taxonomy [top]

Kingdom Phylum Class Order Family
Plantae Tracheophyta Pinopsida Pinales Podocarpaceae

Scientific Name: Podocarpus nakaii
Species Authority: Hayata

Assessment Information [top]

Red List Category & Criteria: Endangered B2ab(iii,v); C2a(i) ver 3.1
Year Published: 2013
Date Assessed: 2010-12-15
Assessor(s): Thomas, P. & Farjon, A.
Reviewer(s): Luscombe, D & Carter, G.
The most recent survey results indicate that Podocarpus nakaii has an area of occupancy less than 500 km2 (estimated to be a little as 64 km2), is known from a maximum of five locations and there has been a recent decline in the number of individuals. The total population size is estimated to be more than 250 but much less than 2,500 with no subpopulation having more than 250 individuals. Populations are under threat from increasing deforestation, agricultural activities and mature trees have been been uprooted for horticultural use. Consequently it is assessed as Endangered under criteria B and C.
Previously published Red List assessments:
1998 Endangered (EN)

Geographic Range [top]

Range Description: Endemic to Taiwan, Province of China (Chianghua Co.?, Nantou Co., Taichung Co.). Records from Chinghua Co. originate from collections made in the early 19th century. This taxon has not been recollected in that area since then.
Countries occurrence:
Taiwan, Province of China
Estimated area of occupancy (AOO) - km2: 64
Number of Locations: 5
Lower elevation limit (metres): 700
Upper elevation limit (metres): 1800
Range Map: Click here to open the map viewer and explore range.

Population [top]

Population: Subpopulations are small and isolated.
Current Population Trend: Decreasing
Additional data:
Number of mature individuals: 251-2499 Continuing decline of mature individuals: Yes
Population severely fragmented: Yes
No. of subpopulations: 5
All individuals in one subpopulation: No

Habitat and Ecology [top]

Habitat and Ecology: Podocarpus nakaii occurs scattered in broad-leaved (angiosperm) forests in the central mountains of Taiwan. These forests are dominated by the families Fagaceae and Lauraceae, with Theaceae and Magnoliaceae also prominent. Characteristic genera of trees are Cyclobalanopsis (= Quercus), Lithocarpus, Machilus (= Persea), Cryptocarya, Schima, and Magnolia. The altitudinal range of this species rich evergreen forest type is from 700 to 1,800 m a.s.l. and it exists under a markedly monsoonal subtropical climate.
Systems: Terrestrial
Continuing decline in area, extent and/or quality of habitat: Yes
Generation Length (years): 15

Use and Trade [top]

Use and Trade: No uses have been recorded for this species; its wood was logged with other trees, and if of good size and shape would have been used for construction, carpentry, etc. It is probably in cultivation, but it may masquerade under the name Podocarpus macrophyllus. There are recent reports of the removal of mature trees for horticultural use.

Threats [top]

Major Threat(s): This species although not specifically targeted by loggers as it is generally of only small to moderate size, has suffered greatly from general deforestation in the period after World War Two. Much of the primary forest where P. nakaii occurred has gone, or it has been turned into secondary vegetation unsuitable for this species. A locality in Chianghua where W.R. Price collected the species in 1912 probably no longer has it growing there; Flora of Taiwan, ed. 2, 1: 565 (1994) only mentions Nantou for its distribution. There are also recent reports of the removal of mature trees for horticultural use.

Conservation Actions [top]

Conservation Actions: This species is being actively monitored by the Taiwan Endemic Species Research Unit.

Citation: Thomas, P. & Farjon, A. 2013. Podocarpus nakaii. The IUCN Red List of Threatened Species 2013: e.T34091A2845003. . Downloaded on 26 November 2015.
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