Taxonomy [top]

Kingdom Phylum Class Order Family
Plantae Tracheophyta Magnoliopsida Geraniales Balsaminaceae

Scientific Name: Impatiens sakeriana
Species Authority: Hook.f.
Impatiens sakerana Hook.f. [orth. error]

Assessment Information [top]

Red List Category & Criteria: Vulnerable A2c ver 3.1
Year Published: 2014
Date Assessed: 2011-03-25
Assessor(s): Cheek, M.
Reviewer(s): Onana, J.-M.
Facilitator/Compiler(s): Harvey, Y.
Assuming a generation time of ten years, it is estimated that about 50% habitat loss may have occurred over its whole range in the last 30 years, equating to at least a 30% population reduction. The species therefore qualifies for listing as Vulnerable under criterion A2. The assessment an update of those in Cheek et al. (2004) and Cheek in Harvey et al. (2004).
Previously published Red List assessments:
2004 Vulnerable (VU)

Geographic Range [top]

Range Description: Known to occur in Equatorial Guinea (Bioko) and Cameroon (SW Region: Mt Cameroon (6 coll.); Mwanenguba (2 coll.); Fosimondi; Bamboutos Mts (1 coll.).  NW Region: Bamenda Highlands (1 coll.); Bali Ngemba FR (3 coll.); Mt Oku (12 coll.); Dom (1 coll.)).
Countries occurrence:
Cameroon; Equatorial Guinea (Bioko)
Estimated area of occupancy (AOO) - km2: 180
Lower elevation limit (metres): 2000
Upper elevation limit (metres): 3000
Range Map: Click here to open the map viewer and explore range.

Population [top]

Population: Assuming a generation time of ten years, it is estimated that about 30% population reduction may have occurred over its whole range in the last 30 years.
Current Population Trend: Decreasing
Additional data:
Continuing decline of mature individuals: Yes
Population severely fragmented: No

Habitat and Ecology [top]

Habitat and Ecology: A terrestrial herb found in the understorey of montane forest; 2,000-3,000 m alt.
Systems: Terrestrial
Continuing decline in area, extent and/or quality of habitat: Yes
Generation Length (years): 10

Threats [top]

Major Threat(s): Although secure on Mt Cameroon, and probably Bioko (Equatorial Guinea), forest at Mwanenguba, the Bamenda Highlands and Bamboutos Mts has been under pressure from grassland fires set by graziers and for clearance for agriculture; forest in the Kilum-Ijim area outside the protected area having seen a reduction in cover of c. 25% in eight years of the 1980s and 1990s (Moat in Cheek et al. 2000). In the Dom area 50% forest loss has occurred 1988-2003 (Baena in Cheek et al. 2010).

Conservation Actions [top]

Conservation Actions: Enforcement of existing protected area boundaries will help protect I. sakeriana. Demographic studies are needed to elucidate generation time and ecological requirements of this taxon.

Citation: Cheek, M. 2014. Impatiens sakeriana. The IUCN Red List of Threatened Species 2014: e.T45431A3002274. . Downloaded on 09 October 2015.
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