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Liparis Ascendens (Orchidaceae)

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Liparis Ascendens (Orchidaceae) See discussions, stats, and author profiles for this publication at: https://www.researchgate.net/publication/347512715 Liparis ascendens (Orchidaceae). The IUCN Red List of Threatened Species 2020 Technical Report · December 2020 CITATIONS READS 0 20 3 authors: Murielle Simo-Droissart Tariq Stévart University of Yaounde I, Higher Teachers' Training College Missouri Botanical Garden 155 PUBLICATIONS 631 CITATIONS 368 PUBLICATIONS 2,301 CITATIONS SEE PROFILE SEE PROFILE Vincent Droissart Institute of Research for Development 195 PUBLICATIONS 1,695 CITATIONS SEE PROFILE Some of the authors of this publication are also working on these related projects: Taxonomic revision and reproductive biology study of the African orchid genus Cyrtorchis View project Origin and diversification of the flowering plants of the Gulf of Guinea Archipelago View project All content following this page was uploaded by Vincent Droissart on 20 December 2020. The user has requested enhancement of the downloaded file. The IUCN Red List of Threatened Species™ ISSN 2307-8235 (online) IUCN 2020: T87750711A87757849 Scope(s): Global Language: English Liparis ascendens Assessment by: Simo-Droissart, M., Stévart, T. & Droissart, V. View on www.iucnredlist.org Citation: Simo-Droissart, M., Stévart, T. & Droissart, V. 2020. Liparis ascendens. The IUCN Red List of Threatened Species 2020: e.T87750711A87757849. https://dx.doi.org/10.2305/IUCN.UK.2020- 3.RLTS.T87750711A87757849.en Copyright: © 2020 International Union for Conservation of Nature and Natural Resources Reproduction of this publication for educational or other non-commercial purposes is authorized without prior written permission from the copyright holder provided the source is fully acknowledged. Reproduction of this publication for resale, reposting or other commercial purposes is prohibited without prior written permission from the copyright holder. For further details see Terms of Use. The IUCN Red List of Threatened Species™ is produced and managed by the IUCN Global Species Programme, the IUCN Species Survival Commission (SSC) and The IUCN Red List Partnership. The IUCN Red List Partners are: Arizona State University; BirdLife International; Botanic Gardens Conservation International; Conservation International; NatureServe; Royal Botanic Gardens, Kew; Sapienza University of Rome; Texas A&M University; and Zoological Society of London. If you see any errors or have any questions or suggestions on what is shown in this document, please provide us with feedback so that we can correct or extend the information provided. THE IUCN RED LIST OF THREATENED SPECIES™ Taxonomy Kingdom Phylum Class Order Family Plantae Tracheophyta Liliopsida Asparagales Orchidaceae Scientific Name: Liparis ascendens P.J.Cribb Taxonomic Source(s): Board of Trustees, RBG Kew. 2020. Plants of the World Online Portal. Richmond, UK Available at: http://www.plantsoftheworldonline.org. Assessment Information Red List Category & Criteria: Endangered B2ab(iii) ver 3.1 Year Published: 2020 Date Assessed: November 28, 2016 Justification: The species is given a Red List status of Endangered (EN). The extent of occurrence (EOO) of Liparis ascendens is estimated to be 36,773 km2, far exceeding the 20,000 km2 threshold for Vulnerable under criterion B1, whereas its area of occupancy (AOO) is estimated to be 20 km2, which falls within the thresholds for Endangered under criterion B2. The species is known from five subpopulations in Cameroon, Gabon and Republic of the Congo, and these five subpopulations represent three locations (sensu IUCN 2019), which falls within the thresholds for Endangered under criterion B2. All the collection sites are in unprotected areas and are easily accessible by local residents. There are no current conservation actions for these subpopulations. The main threats to the species are shifting agriculture in Cameroon, mining and farmer activities in Gabon and Republic of the Congo and selective logging. We project that this degradation will continue in the future. Considering all these facts, Liparis ascendens is assigned an IUCN status of EN B2ab(iii). Geographic Range Range Description: Liparis ascendens is recorded to occur in Cameroon, Gabon and Republic of the Congo. The species occurs around 900 m elevation. The extent of occurrence (EOO) is estimated to be 36,773 km2 while the area of occupancy (AOO) is estimated to be 20 km2. Country Occurrence: Native, Extant (resident): Cameroon; Congo; Gabon © The IUCN Red List of Threatened Species: Liparis ascendens – published in 2020. 1 https://dx.doi.org/10.2305/IUCN.UK.2020-3.RLTS.T87750711A87757849.en Distribution Map © The IUCN Red List of Threatened Species: Liparis ascendens – published in 2020. 2 https://dx.doi.org/10.2305/IUCN.UK.2020-3.RLTS.T87750711A87757849.en Population The population of Liparis ascendens is currently thought to be decreasing because the habitat of some subpopulations is threatened by anthropogenic activities such as shifting agriculture and mining. The species is a geophyte or lithophyte. The number of individuals is not known and cannot be estimated. Current Population Trend: Decreasing Habitat and Ecology (see Appendix for additional information) Liparis ascendens occurs on moist mossy soil on rock, and on open place on rocks, in forest with Leonardoxa sp. Systems: Terrestrial Use and Trade (see Appendix for additional information) The species is not known to be used. Threats (see Appendix for additional information) The habitat of Liparis ascendens is threatened by anthropogenic activities such as mining activities in Gabon and Republic of the Congo, shifting agriculture in Cameroon and selective logging. Conservation Actions (see Appendix for additional information) All six known collections of Liparis ascendens have been made outside protected areas, of which some are easily accessible. There are no current conservation actions for these subpopulations. In addition, there is no information about ex situ cultivation of the species. Credits Assessor(s): Simo-Droissart, M., Stévart, T. & Droissart, V. Reviewer(s): Gereau, R.E., Rankou, H. & Lachenaud, O. Authority/Authorities: IUCN SSC Orchid Specialist Group © The IUCN Red List of Threatened Species: Liparis ascendens – published in 2020. 3 https://dx.doi.org/10.2305/IUCN.UK.2020-3.RLTS.T87750711A87757849.en Bibliography Cribb, P.J. 1996. New species and records of Orchidaceae from West Africa. Kew Bulletin 51(2): 353-363. IUCN. 2020. The IUCN Red List of Threatened Species. Version 2020-3. Available at: www.iucnredlist.org. (Accessed: 10 December 2020). IUCN Standards and Petitions Committee. 2019. Guidelines for Using the IUCN Red List Categories and Criteria. Version 14. Prepared by the Standards and Petitions Subcommittee. Available at: http://www.iucnredlist.org/documents/RedListGuidelines.pdf. Szlachetko, D.L. and Olszewski, T.S. 2001. Orchidacées 2. In: G. Achoundong and P. Morat (eds), Flore du Cameroun 35, pp. 321-665. MNHN, Paris - Herbier National, Yaoundé. Citation Simo-Droissart, M., Stévart, T. & Droissart, V. 2020. Liparis ascendens. The IUCN Red List of Threatened Species 2020: e.T87750711A87757849. https://dx.doi.org/10.2305/IUCN.UK.2020- 3.RLTS.T87750711A87757849.en Disclaimer To make use of this information, please check the Terms of Use. External Resources For Supplementary Material, and for Images and External Links to Additional Information, please see the Red List website. © The IUCN Red List of Threatened Species: Liparis ascendens – published in 2020. 4 https://dx.doi.org/10.2305/IUCN.UK.2020-3.RLTS.T87750711A87757849.en Appendix Habitats (http://www.iucnredlist.org/technical-documents/classification-schemes) Major Season Suitability Habitat Importance? 1. Forest -> 1.6. Forest - Subtropical/Tropical Moist Lowland - Suitable - Plant Growth Forms (http://www.iucnredlist.org/technical-documents/classification-schemes) Plant Growth Form GE. Geophyte L. Lithophyte Threats (http://www.iucnredlist.org/technical-documents/classification-schemes) Threat Timing Scope Severity Impact Score 2. Agriculture & aquaculture -> 2.1. Annual & Ongoing - - Low impact: 3 perennial non-timber crops -> 2.1.1. Shifting agriculture Stresses: 1. Ecosystem stresses -> 1.2. Ecosystem degradation 2. Species Stresses -> 2.2. Species disturbance 2. Species Stresses -> 2.3. Indirect species effects 2. Agriculture & aquaculture -> 2.1. Annual & Ongoing - - Low impact: 3 perennial non-timber crops -> 2.1.2. Small-holder farming Stresses: 1. Ecosystem stresses -> 1.2. Ecosystem degradation 2. Species Stresses -> 2.2. Species disturbance 2. Species Stresses -> 2.3. Indirect species effects 2. Agriculture & aquaculture -> 2.2. Wood & pulp Ongoing - - Low impact: 3 plantations -> 2.2.1. Small-holder plantations Stresses: 1. Ecosystem stresses -> 1.2. Ecosystem degradation 2. Species Stresses -> 2.2. Species disturbance 2. Species Stresses -> 2.3. Indirect species effects 2. Agriculture & aquaculture -> 2.3. Livestock farming Ongoing - - Low impact: 3 & ranching -> 2.3.2. Small-holder grazing, ranching or farming Stresses: 1. Ecosystem stresses -> 1.1. Ecosystem conversion 1. Ecosystem stresses -> 1.2. Ecosystem degradation 2. Species Stresses -> 2.2. Species disturbance 2. Species Stresses -> 2.3. Indirect species effects © The IUCN Red List of Threatened Species: Liparis ascendens – published in 2020. 5 https://dx.doi.org/10.2305/IUCN.UK.2020-3.RLTS.T87750711A87757849.en 3. Energy production & mining -> 3.2. Mining & Ongoing - - Low impact: 3 quarrying Stresses: 1. Ecosystem stresses ->
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