Conophytum bilobum subsp. altum

Assessor: Sarah Schumann

Sensitive in 2010
No
Family
Aizoaceae
Reason for the sensitivity status
This subspecies and several others of the genus are known to be targeted, exploited and illegally removed from the wild, causing population decline. Evidence shows that the Conophytum genus is in high demand in international horticultural trade. Although this subspecies' population size is not small, the vast majority of the genera's regeneration potential from collection is poor, making this subspecies vulnerable to population loss and threatened with over-collection. Releasing data on this subspecies can exacerbate threat and vulnerability.
This species is threatened by widespread, unregulated, unsustainable exploitation of wild populations. The localities of remaining populations need to be protected to avoid any further exploitation, which is likely to drive it to extinction.
Exploitation extent
Significant - wild individuals of the species are known to be exploited, collected, traded or utilized in a targeted manner, and utilisation is widespread, affects the majority of wild populations and/or is causing rapid decline of the wild population.
Justification and references

According to the IUCN Red List Assessment, this species is Vulnerable as this species is threatened with illegal collection of mature individuals for the international trade in ornamental succulents in 2020-21 resulting in low levels of decline (Young, 2022). This species has been highly sought after by collectors and is highly likely to remain so in future. Another threat includes livestock grazing which is causing ongoing degradation and loss of habitat. As of 2019, this genus has become popular in trade and there is a high demand from international and domestic horticultural markets for wild collected plants as indicated by media, police reports and several online marketplace, e-commerce, and auction sites (Friedman, 2021; Trenchard, 2021; Hyman, 2020; Tshuma, 2021). Species of this genus were among those targeted and confiscated during a recent criminal prosecution of illegal plant collecting (Majikela, 2020; Myburgh, 2021). There has been several recorded confiscations of the subspecies and others of the genus from illegal plant collection (Confiscation Lists (2019-2021) provided by Cape Nature, SANBI Karoo Desert National Botanical Garden, SANBI Kirstenbosch Botanical Garden, SANParks Sendelingsdrift Botanic Garden and the Department of Forestry, Fisheries and the Environment). This suggests that this species and genus is being targeted and that this species is at risk of over-exploitation.

Friedman, B. 2021. 24 May 2021. South Africa targeted for rare plant poaching placing biodiversity at risk. Cape Talk. Available at: https://www.capetalk.co.za/articles/417213/south-africa-targeted-for-rare-plant-poaching-placing-biodiversity-at-risk

Hyman, A. 2020. 1 February 2020. Koreans fined R5m as poachers target SA's succulent treasure chest. Times Live. Available at: https://www.timeslive.co.za/news/south-africa/2020-02-01-koreans-fined-r5m-as-poachers-target-sas-succulent-treasure-chest/

Majikela, M. 2020. 31 January 2020. Hefty sentencing for possession of Conophytum plants. Media Statement. South African Police Service Office of the Provincial Commissioner Western Cape. Available at: https://www.saps.gov.za/newsroommsspeechdetail.php?nid=24491

Myburgh, A. 2021. 20 January 2021. Man behind bars for possession of endangered plants (Conophytum). Media Statement South African Police Service, Office of the Provincial Commissioner North West. Available at: https://www.saps.gov.za/newsroom/msspeechdetail.php?nid=24491

Trenchard, T. 2021. 31 July 2021. In South Africa, Poachers Now Traffic in Tiny Succulent Plants. The New York Times. Available at: https://www.nytimes.com/2021/07/31/world/africa/south-africa-poachers-tiny-succulent-plants.html

Tshuma, N. 2021. 20 May 2021. Collectors drive a spike in theft of indigenous plants in the Western Cape. IOL. Available at: https://www.iol.co.za/capeargus/news/collectors-drive-a-spike-in-theft-of-indigenous-plants-in-the-western-cape-e120f529-741b-43a7-8454-cb8f69544878

Young A. 2022. (assessment in prep 2022) Conophytum bilobum subsp. altum. The IUCN Red List of Threatened Species 

Population vulnerability
Population is not vulnerable: size is > 2500 mature individuals, AND the number of known subpopulations is > 5 AND range > 100km2
Justification and references

There is no formal population size estimate for this species however it is likely to be between 10 000 and 25 000 mature individuals and is declining at low levels due to illegal harvesting. (Young, 2022). The extent of occurrence of the species is 2703 km² and area of occupancy is 80 km² (Young, 2015).

Young, A.J. 2015. Conophytum bilobum (Marloth) N.E.Br. subsp. altum (L.Bolus) S.A.Hammer. National Assessment: Red List of South African Plants version 2020.1.

Young A. 2022. (assessment in prep 2022) Conophytum bilobum subsp. altum. The IUCN Red List of Threatened Species 

Targeted demographics
Mature (breeding) individuals are killed, significantly weakened or are permanently removed from the wild, OR immature individuals are targeted and this significantly impacts mature (breeding) individuals.
Justification and references

Individuals are removed from the wild as the several confiscation records state.

Regeneration potential
This species has a slow population growth rate, or the growth rate varies depending on habitat, and there is a poor chance the wild populations will recover from exploitation OR a collector might feasibly harvest the entire extant population removing the chance of subsequent recruitment.
Justification and references

Regeneration potential for the vast majority of the Conophytum genus is very poor as recruitment is low and dependent on successive, appropriate weather conditions. Seeds are not known to disperse. Regeneration will take decades. (Young, personal communication 2021, 5 October)