Costus louisii
H.Maas & Maas
Graphe en cours d’indexation
Calcul du tissu écologique de Costus louisii.
Le graphe apparaîtra automatiquement dès que le calcul est terminé (rafraîchissement toutes les 5s).
Liste rouge IUCN
CR · En danger critiquecritères B2ab(iii)?Inconnue- Évaluation
- 2020 · v3.1
- Altitude
- 0 – 10 m
- Profondeur
- – m
État de la populationTexte officiel évaluation IUCNExpert
No quantitative population data are available for Costus louisii.
Menaces identifiées(4 menaces classées CMP-IUCN)
1_3Tourism & recreation areasSlow, Significant DeclinesWhole (>90%)Ongoing2_3_2Small-holder grazing, ranching or farmingSlow, Significant DeclinesWhole (>90%)Ongoing4_1Roads & railroadsSlow, Significant DeclinesWhole (>90%)Ongoing5_3_3Unintentional effects: (subsistence/small scale) [harvest]Slow, Significant DeclinesWhole (>90%)Ongoing
Description complète des menacesTexte détaillé évaluation IUCNExpert
Coastal habitats are the most threatened in Gabon, through urbanization, construction of roads or pipelines, and clearing for cultivation or wood harvesting. These threats are causing a decline in the quality of the habitat of Costus louisii.
Habitats préférentiels (classification IUCN)
1_8Forest - Subtropical/Tropical Swamp2_2Savanna - Moist
Mesures de conservation recommandéesStratégies de conservation IUCNExpert
Since this species is threatened by logging, various conservation measures must be considered. First, it should be regarded as an HCV1 (High Conservation Value), and as a consequence, should be included in the management plan of the logging concessions within which it occurs. Second, it should be included in Gabon’s list of protected species, and the destruction of its habitat and possible harvesting must therefore be limited. Third, ex situ conservation should be tested, both within Gabon and internationally. Finally, a public awareness campaign must be conducted involving logging companies and other private actors, NGOs, scientific institutions, and the Gabonese government, to ensure that the species is taken into consideration when decisions are made that could impact its conservation.
A summary of our knowledge about this species is available at: http://legacy.tropicos.org/Name/100472119?projectid=75.Actions de conservation (8)Conservation Actions Classification Scheme — IUCNExpert
1_1Site/area protection1_2Resource & habitat protection2_1Site/area management3_3_1Reintroduction4_3Awareness & communications5_1_2National level5_3Private sector standards & codes5_4_2National level
Stress écologiques (6)Stresses Classification — IUCNExpert
1_1Ecosystem conversion1_1Ecosystem conversion1_2Ecosystem degradation1_2Ecosystem degradation1_2Ecosystem degradation1_2Ecosystem degradation
Priorités de recherche (5)Research Needed Classification — IUCNExpert
1_2Population size, distribution & trends1_3Life history & ecology2_1Species Action/Recovery Plan2_2Area-based Management Plan3_1Population trends
Niche IUCN globaleRealms · Systems · LMEs · Growth forms · FAOs — biogéographie IUCNExpert
Royaumes biogéographiques
Systèmes (terrestre/eau douce/marin)
Formes de croissance
Références bibliographiques (4)Sources scientifiques de l'évaluation IUCNExpert
- BGCI. 2020. Botanic Gardens Conservation International (BGCI) - Plant Search. Available at: <a href="https://tools.bgci.org/plant_search.php">https://tools.bgci.org/plant_search.php</a>.
- IUCN. 2020. The IUCN Red List of Threatened Species. Version 2020-3. Available at: <a href="www.iucnredlist.org">www.iucnredlist.org</a>. (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: <a href="http://www.iucnredlist.org/documents/RedListGuidelines.pdf">http://www.iucnredlist.org/documents/RedListGuidelines.pdf</a>.
- Maas-van de Kamer, H., Maas, P.J.M., Wieringa, J.J. and Specht, C.D. 2016. Monograph of African Costaceae. <i>Blumea</i> 61: 280-318.
Évaluateurs & contributeurs (3)Personnes ayant contribué à l'évaluation IUCNExpert
Maas, P.J.M., Maas-van de Kamer, H., Hilton-Taylor, C., Bidault, E., Paradis, A.-H. & Stévart, T. 2020. Costus louisii. The IUCN Red List of Threatened Species 2020: e.T163774422A163794312. Accessed on 05 May 2026.