Red List Status
VU - Vulnerable, B1ab(iii)+2ab(iii) (IUCN version 3.1)

Red List Assessment

Red List Status

Is the reassessment subject to the 5-year rule? (Not specified)

Assessment Information

Date of Assessment: 2023-01-29

Reviewed? (Not specified)

Assessor(s): Braun, K.

Reviewer(s): (Not specified)

Contributor(s): (Not specified)

Facilitators/Compilers: (Not specified)

Institution(s): (Not specified)

Acknowledgements: (Not specified)

Regions: Global

Regional Expert Questions: (Not specified)

Assessment Rationale

Tephrosia gobensis has a restricted distribution, with an estimated extent of occurrence of 137.260 km² and an area of occupancy of 28 km². Most of the population falls within a protected area, but there is still an ongoing threat to its habitat from overgrazing. Based on this, it has been assessed as Vulnerable, under Criteria B1 and B2.
Date last seen: 2020

Reasons for Change

Reason(s) for Change in Red List Category from the Previous Assessment: (Not specified)

Red List Index

Red List Index: (Not specified)

Distribution

Geographic Range

This species is known from north east Eswatini, from low lying areas west of the Lubombo Mountains, on the mountain range, and from Mozambique in the Goba area. There is an additional record from Mozambique without precise locality information, but probably from the same general area.

Area of Occupancy (AOO)

Estimated area of occupancy (AOO) - in km2	Justification
28	The estimated area of occupancy for this species is based on 9 geo-referenced records, calculated using GeoCAT (Bachman et al. 2011), with the standard 2x2 km grid cell being applied.

Continuing decline in area of occupancy (AOO)	Qualifier	Justification
Unknown	-	There is currently no information on a decline in area of occupancy for this species.

Extreme fluctuations in area of occupancy (AOO): (Not specified)

Extent of Occurrence (EOO)

Estimated extent of occurrence (EOO)- in km2	EOO estimate calculated from Minimum Convex Polygon	Justification
137.260	true	The estimated extent of occurrence has been based on 9 geo-referenced records, calculated using GeoCAT (Bachman et al. 2011).

Continuing decline in extent of occurrence (EOO)	Qualifier	Justification
Unknown	-	There is currently no information on a decline in extent of occurrence for this species.

Extreme fluctuations in extent of occurrence (EOO): (Not specified)

Locations Information

Number of Locations	Justification
6	The estimated number of locations is based on 9 geo-referenced records.

Continuing decline in number of locations	Qualifier	Justification
Unknown	-	There is currently no information on a decline in number of locations for this species.

Extreme fluctuations in the number of locations: (Not specified)

Very restricted AOO or number of locations (triggers VU D2)

Very restricted in area of occupancy (AOO) and/or # of locations	Justification
No	The estimated area of occupancy for this species is 28 km2, and it occurs in at least 6 localities.

Elevation / Depth / Depth Zones

Elevation Lower Limit (in metres above sea level): 70

Elevation Upper Limit (in metres above sea level): 405

Depth Lower Limit (in metres below sea level): (Not specified)

Depth Upper Limit (in metres below sea level): (Not specified)

Depth Zone: (Not specified)

Map Status

Map Status: (Not specified)

Biogeographic Realms

Biogeographic Realm: Afrotropical

Country	Presence	Origin	Formerly Bred	Seasonality
Eswatini	Extant	Native	-	Resident
Mozambique	Extant	Native	-	Resident

Population

There is no detailed population survey information for this species. There are relatively recent records confirming its continued existence within Mlawula Nature Reserve and Mhlumeni community conservation area. For the purposes of this assessment, it has been assumed that this species still occurs in the localities from older records.

Population Information

Current Population Trend: Unknown

Number of mature individuals (=population size): (Not specified)

Extreme fluctuations? (in # of mature individuals): (Not specified)

Severely fragmented? (Not specified)

Continuing decline in mature individuals? (Not specified)

Continuing decline % in mature individuals within 1 generation or 3 years, whichever is longer (up to max. of 100 years in the future): (Not specified)

Continuing decline % in mature individuals within 2 generations or 5 years, whichever is longer (up to max. of 100 years in the future): (Not specified)

Continuing decline % in mature individuals within 3 generations or 10 years, whichever is longer (up to max. of 100 years in the future): (Not specified)

Extreme fluctuations in the number of subpopulations: (Not specified)

Continuing decline in number of subpopulations: (Not specified)

All individuals in one subpopulation: (Not specified)

Number of mature individuals in largest subpopulation: (Not specified)

Number of Subpopulations: (Not specified)

Population Reduction - Past

Percent Change in past: (Not specified)

Past Population Reduction Basis: (Not specified)

Causes of past reduction reversible? (Not specified)

Causes of past reduction understood? (Not specified)

Causes of past reduction ceased? (Not specified)

Population Reduction - Future

Percent Change in future: (Not specified)

Future Population Reduction Basis: (Not specified)

Population Reduction - Ongoing

Both: Percent Change over any 10 year or 3 generation period, whichever is longer, and must include both past and future, future can't go beyond 100 years: (Not specified)

Both Population Reduction Basis: (Not specified)

Causes of both (past and future) reduction reversible? (Not specified)

Causes of both (past and future) reduction understood? (Not specified)

Causes of both (past and future) reduction ceased? (Not specified)

Quantitative Analysis

Probability of extinction in the wild within 3 generations or 10 years, whichever is longer, maximum 100 years: (Not specified)

Probability of extinction in the wild within 5 generations or 20 years, whichever is longer, maximum 100 years: (Not specified)

Probability of extinction in the wild within 100 years: (Not specified)

Habitats and Ecology

This species has been found in rocky areas in lower lying areas and on mountain slopes. The vegetation types based on current records are Tshokwane-Hlane Basalt Lowveld (SVI5) and Southern Lebombo Bushveld (SVI16) (Mucina et. al. 2018).

IUCN Habitats Classification Scheme

Habitat	Season	Suitability	Major Importance?
2.2. Savanna -> Savanna - Moist	-	Suitable	Yes

Continuing Decline in Habitat

Continuing decline in area, extent and/or quality of habitat?	Qualifier	Justification
Yes	Inferred	Most of the habitat for this species is under some form of protection, but the remaining areas are subject to ongoing heavy grazing.

Life History

Generation Length: (Not specified)

Age at maturity: female or unspecified: (Not specified)

Age at Maturity: Male: (Not specified)

Size at Maturity (in cms): Female: (Not specified)

Size at Maturity (in cms): Male: (Not specified)

Longevity: (Not specified)

Average Reproductive Age: (Not specified)

Maximum Size (in cms): (Not specified)

Size at Birth (in cms): (Not specified)

Gestation Time: (Not specified)

Reproductive Periodicity: (Not specified)

Average Annual Fecundity or Litter Size: (Not specified)

Annual Rate of Population Increase: (Not specified)

Natural Mortality: (Not specified)

Does the species lay eggs? (Not specified)

Does the species give birth to live young: (Not specified)

Does the species exhibit parthenogenesis: (Not specified)

Does the species have a free-living larval stage? (Not specified)

Does the species require water for breeding? (Not specified)

Movement Patterns

Movement Patterns: (Not specified)

Congregatory: (Not specified)

Systems

System: Terrestrial

Plant / Fungi Specific

Wild relative of a crop? (Not specified)

Plant and Fungal Growth Forms: (Not specified)

Use and Trade

General Use and Trade Information

Species not utilized: (Not specified)

No use/trade information for this species: true

General notes regarding trade and use of this species: (Not specified)

Local Livelihood: (Not specified)

National Commercial Value: (Not specified)

International Commercial Value: (Not specified)

End Use: (Not specified)

Is there harvest from captive/cultivated sources of this species? (Not specified)

Trend in level of total offtake from wild sources: (Not specified)

Trend in level of total offtake from domesticated sources: (Not specified)

Harvest Trend Comments: (Not specified)

Non- Consumptive Use

Non-consumptive use of the species? (Not specified)

Explanation of non-consumptive use: (Not specified)

Livelihoods

Livelihoods: (Not specified)

Threat	Timing	Scope	Severity
2.3.2. Agriculture & aquaculture -> Livestock farming & ranching -> Small-holder grazing, ranching or farming	Ongoing	Minority (<50%)	Slow, Significant Declines

Conservation

This species has been recorded from within Mbuluzi Game Reserve, Mlawula Nature Reserve and the Mhlumeni community conservation area, the majority of the currently known range for this species falling within these areas.

Conservation Actions In- Place

Action Recovery Plan	Note
No	-

Systematic monitoring scheme	Note
No	-

Conservation sites identified	Note
Yes, over part of range	-

Occur in at least one PA	Note
Yes	This species has been recorded from within Mbuluzi Game Reserve, Mlawula Nature Reserve and the Mhlumeni community conservation area.

Percentage of population protected by PAs (0-100)	Note
81-90	-

Area based regional management plan: (Not specified)

Invasive species control or prevention	Note
Yes	There are invasive species control measures conducted in Mbuluzi Game Reserve and Mlawula Nature Reserve.

Harvest management plan	Note
No	-

Successfully reintroduced or introduced benignly	Note
No	-

Subject to ex-situ conservation	Note
No	-

Subject to recent education and awareness programmes	Note
No	-

Included in international legislation	Note
No	-

Subject to any international management/trade controls	Note
No	-

Important Conservation Actions Needed

Conservation Actions	Note
3.4.2. Species management -> Ex-situ conservation -> Genome resource bank	No material of this species has yet been collected for ex-situ conservation.

Research Needed

Research	Note
1.2. Research -> Population size, distribution & trends	Fieldwork is required to determine whether this species is found on other parts of the Lubombo Mountains and adjacent areas. There is also a need to determine whether there are any trends occurring.

Tephrosia gobensis - Brummitt