Draft
Common Names: No Common Names
Synonyms: No Synonyms
Taxonomic Note:
It is possible that the taxonomy of this species needs to be
revisited. It is based on one herbarium specimen from Eswatini, although
there is a specimen from South Africa which might belong to the same
species.
| Red List Status | |
|---|---|
| DD - Data Deficient, (IUCN version 3.1) |
Is the reassessment subject to the 5-year rule? (Not specified)
Date of Assessment: (Not specified)
Reviewed? (Not specified)
Assessor(s): (Not specified)
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)
Dierama elatum is only known from one specimen collected in Eswatini, the locality is uncertain and there may be questions with regard to the taxonomy. Based on this, this species has been assessed as Data Deficient.
Reason(s) for Change in Red List Category from the Previous Assessment: (Not specified)
Red List Index: (Not specified)
This species is only known from one record collected by Mabel Stewart
in the Hlatikhulu district, in 1911. There is a record from
KwaZulu Natal in South Africa also identified as Dierama elatum
(MacDevette, K 133 NH0082724-0, source BODATSA), but this identification
has been queried.
It is possible that the taxonomy of this record needs to be revisited.
| Estimated area of occupancy (AOO) - in km2 | Justification |
|---|---|
| 0 | This plant is only known from one record collected in 1911, exact locality unknown, and has not been seen since. |
| Continuing decline in area of occupancy (AOO) | Qualifier | Justification |
|---|---|---|
| Unknown | - | - |
Extreme fluctuations in area of occupancy (AOO): (Not specified)
| Estimated extent of occurrence (EOO)- in km2 | EOO estimate calculated from Minimum Convex Polygon | Justification |
|---|---|---|
| 0 | - | This plant is only known from one record, collected in 1911, exact locality unknown, and has not been seen since. |
| Continuing decline in extent of occurrence (EOO) | Qualifier | Justification |
|---|---|---|
| Unknown | - | This plant has not been found since the original collection, but the Hlatikhulu area has not been well surveyed. |
Extreme fluctuations in extent of occurrence (EOO): (Not specified)
| Number of Locations | Justification |
|---|---|
| 0 | The only record for this species does not have detailed locality information, and the species has not been recorded since 1911. |
Continuing decline in number of locations: (Not specified)
Extreme fluctuations in the number of locations: (Not specified)
| Very restricted in area of occupancy (AOO) and/or # of locations | Justification |
|---|---|
| Unknown | This plant is only known from one record, exact locality unknown. |
Elevation Lower Limit (in metres above sea level): 1000
Elevation Upper Limit (in metres above sea level): 1200
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: (Not specified)
Biogeographic Realm: Afrotropical
| Country | Presence | Origin | Formerly Bred | Seasonality |
|---|---|---|---|---|
| Eswatini | Possibly Extinct | Native | - | Resident |
Large Marine Ecosystems: (Not specified)
FAO Marine Areas: (Not specified)
There is no current information on population status or trends. This species is only known from one record collected by Mabel Stewart in the Hlatikhulu district, in 1911. There is a record from KwaZulu Natal in South Africa also identified as Dierama elatum (MacDevette, K 133 NH0082724-0, source BODATSA), but this identification has been queried.
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)
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)
Percent Change in future: (Not specified)
Future Population Reduction Basis: (Not specified)
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)
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)
Due to the vague locality information on the only record for this species, it is not possible to determine habitat or vegetation types for this plant.
General Habitat Information: (Not specified)
Continuing decline in area, extent and/or quality of habitat? (Not specified)
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: (Not specified)
Congregatory: (Not specified)
System: (Not specified)
Wild relative of a crop? (Not specified)
Plant and Fungal Growth Forms: (Not specified)
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 of the species? (Not specified)
Explanation of non-consumptive use: (Not specified)
Livelihoods: (Not specified)
Due to the vague locality information on the only record for this species, it is not possible to determine possible threats for this species.
No past, ongoing, or future threats exist to this species. (Not specified)
The threats to this species are unknown. (Not specified)
Threats: (Not specified)
The are no current conservation actions for this species.
| Action Recovery Plan | Note |
|---|---|
| No | - |
| Systematic monitoring scheme | Note |
|---|---|
| No | - |
| Conservation sites identified | Note |
|---|---|
| No | - |
| Occur in at least one PA | Note |
|---|---|
| No | - |
| Percentage of population protected by PAs (0-100) | Note |
|---|---|
| 0 | - |
Area based regional management plan: (Not specified)
Invasive species control or prevention: (Not specified)
| 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: (Not specified)
| Research | Note |
|---|---|
| 1.2. Research -> Population size, distribution & trends | Fieldwork is required to determine if this species still exists in the wild. |
| Insufficient Information Available | All coded services should have an importance score of 5 - Not Known. |
|---|---|
| true | - |
Species provides no ecosystem services: (Not specified)
Ecosystem Services: (Not specified)
No references used in this assessment.