Distribution and conservation status of Dioon vovidesii (Zamiaceae), a cycad from Sonora, Mexico
DOI:
https://doi.org/10.22201/ib.20078706e.2026.97.5909Keywords:
Cycadales, Endemic species, Endangered, Extinction risk, IUCN Red List, MER method, Mexican flora, Threatened plantAbstract
Extinction is not a random process; certain traits make some species more vulnerable. Cycads face a high risk of extinction due to threats such as habitat loss, illegal trade, and invasive species. Dioon vovidesii, a recently described cycad species, has limited information available regarding its conservation status. To address this gap, we evaluated its vulnerability using IUCN Red List criteria and Mexico’s Extinction Risk Assessment Method (MER). Information on species distribution, habitat, life history, population size, demographic trends, and anthropogenic threats was obtained from fieldwork in Sierra de Mazatán and specialized sources. Eight populations were identified in Sonora, Mexico, with small sizes ranging from 2 to 120 individuals. Although demographic analyses suggested near- equilibrium population dynamics, low seedling survival and poor recruitment were observed. All populations were exposed to anthropogenic threats within a 5 km radius. Based on both assessments, D. vovidesii is proposed to be classified under a risk category. These results highlight the need for continuous monitoring, further research on life history and ecology, and the effects of land-use change and buffelgrass invasion. Effective conservation and management strategies require collaboration among local communities, academic institutions, and government agencies to ensure the long-term survival of the species.
References
Álvarez-Buylla, E. R., & Slatkin, M. (1994). Finding confidence limits on population growth rates: Three real examples revised. Ecology, 75, 255–260. https://doi.org/10.1016/0169-5347(91)90026-T
Álvarez-Yépiz, J. C., Búrquez, A., & Dovčiak, M. (2014). Ontogenetic shifts in plant–plant interactions in a rare cycad within angiosperm communities. Oecologia, 175, 725–735. https://doi.org/10.1007/s00442-014-2929-3
Álvarez-Yépiz, J. C., Dovčiak, M., & Búrquez, A. (2011). Persistence of a rare ancient cycad: Effects of environment and demography. Biological Conservation, 144, 122–130. https://doi.org/10.1016/j.biocon.2010.08.007
Arriaga, C. L., Espinoza, R. J. M., Aguilar, Z. C., Martínez, R. E., Gómez, M. L., & Loa, E.E. (2000). Regiones terrestres prioritarias de México. Ciudad de Mexico: Comisión Nacional para el Conocimiento y Uso de la Biodiversidad. https://doi.org/10.5962/bhl.title.118644
Bachman, S., Moat, J., Hill, A.W., de la Torre, J., & Scott, B. (2011). Supporting Red List threat assessments with GeoCAT: geospatial conservation assessment tool. Zookeys, 150, 117–126. https://doi.org/10.3897/zookeys.150.2109
Bongers, F., Popma, J., del Castillo, J. M., & Carabias, J. (1988). Structure and floristic composition of the lowland rain forest of Los Tuxtlas, Mexico. Vegetatio, 74, 55–80. https://doi.org/10.1007/BF00045614
Brito-Castillo, L., Crimmins, M. A., & Díaz, S. C. (2010). Clima. In F. E. Molina-Freaner, & T. R. Van Devender (Eds.), Diversidad biológica de Sonora (pp. 73–96). Ciudad de Mexico: Universidad Nacional Autónoma de México.
Brower, J. E., Zar, J. H., & Von Ende C. N. (1998). Field and laboratory methods for general ecology. Boston: WCB McGraw-Hill.
Cabrera-Toledo, D., González-Astorga, J., Vovides, A. P., Casas, A., Vargas-Ponce, O., Carrillo-Reyes, P. et al. (2019). Surviving background extinction: Inferences from historic and current dynamics in the contrasting population structures of two endemic Mexican cycads. Population Ecology, 61, 62–73. https://doi.org/10.1002/1438-390X.1008
Calonje, M., Stevenson, D. W., & Osborne, R. (2026). The World List of Cycads, online edition. Retrieved on March 17, 2026 from: http://www.cycadlist.org. https://doi.org/10.5281/zenodo.18940728
Caswell, H. (2001). Matrix population models: construction, analysis, and interpretation. Sunderland, Massachusetts: Sinauer Associates.
Carvajal-Hernández, C. I., Juárez-Fragoso, M. A., Armenta-Montero, S., Demeneghi-Calatayud, A. P., & Vázquez-Torres, M. (2020). Different criteria for evaluation of the conservation status of Ceratozamia miqueliana (Zamiaceae). Tropical Conservation Science, 13, 1–12.
https://doi.org/10.1177/1940082920952682
Chichorro, F., Urbano, F., Teixeira, D., Väre, H., Pinto, T., Brummitt, N. et al. (2022). Trait-based prediction of extinction risk across terrestrial taxa. Biological Conservation, 274, 1–8. https://doi.org/10.1016/j.biocon.2022.109738
Conanp (Comisión Nacional de Áreas Naturales Protegidas). (2012). Estudio previo justificativo para el establecimiento del Área de Protección de Flora y Fauna Sierra Huérfana, en el Estado de Sonora. México. Retrieved on January 10, 2024 from: https://www.conanp.gob.mx/datos_abiertos/DGCD/25.pdf
ESRI (Environmental Systems Research Institute). (2016). ArcGIS Release 10.5. Redlands, CA: ESRI.
Fischer, M., & Stöcklin, J. (1997). Local extinctions of plants in remnants of extensively used calcareous grasslands 1950–1985. Conservation Biology, 11, 727–737. https://doi.org/10.1046/j.1523-1739.1997.96082.x
García, M. B., Domingo, D., Pizarro, M., Font, X., Gómez, D., & Ehrlén, J. (2020). Rocky habitats as microclimatic refuges for biodiversity. A close-up thermal approach. Environmental and Experimental Botany, 170, 1–10. https://doi.org/10.1016/j.envexpbot.2019.103886
Guevara‐Andino, J. E., Navas‐Muñoz, D., & Endara, M. J. (2025). High extinction risk of the endemic tree flora in a hyper‐diverse region of the Amazon. Plants, People, Planet, 7, 998–1010. https://doi.org/10.1002/ppp3.10606
Gutiérrez-Ortega, J. S., Jiménez-Cedillo, K., Pérez-Farrera, M. A., Martínez, J. F., Molina-Freaner, F., Watano, Y. et al. (2018). Species definition of Dioon sonorense (Zamiaceae, Cycadales), and description of D. vovidesii, a new cycad species from northwestern Mexico. Phytotaxa, 369, 107–114. https://doi.org/10.11646/phytotaxa.369.2.4
Gutiérrez-Ortega, J. S., Jiménez-Cedillo, K., Pérez-Farrera, M. A., Vovides, A. P., Martínez, J. F., Molina-Freaner, F. et al. (2018). Considering evolutionary processes in cycad conservation: Identification of evolutionarily significant units within Dioon sonorense (Zamiaceae) in northwestern Mexico. Conservation Genetics, 19, 1069–1081. https://doi.org/10.1007/s10592-018-1079-2
Gutiérrez-Ortega, J. S., Kajita, T., & Molina-Freaner, F. E. (2014). Conservation genetics of an endangered cycad, Dioon sonorense (Zamiaceae): implications from variation of chloroplast DNA. Botanical Sciences, 92, 441–451. https://doi.org/10.17129/botsci.112
Gutiérrez-Ortega, J. S., Molina-Freaner, F., Martínez, J. F., Pérez-Farrera, M. A., Vovides, A. P., Hernández-López, A. et al. (2021). Speciation along a latitudinal gradient: the origin of the Neotropical cycad sister pair Dioon sonorense-D. vovidesii (Zamiaceae). Ecology and Evolution, 11, 6962–6976. https://doi.org/10.1002/ece3.7545
IUCN (International Union for the Conservation of Nature). (2024). Red List Categories and Criteria. Version 16. Retrieved on October 28, 2025 from: https://www.iucnredlist.org/es/resources/redlistguidelines
IUCN (International Union for the Conservation of Nature). (2025). The IUCN Red List of Threatened Species 2023-1. Retrieved on November 19, 2025 from: https://www.iucnredlist.org/
IUCN/SCC Cycad Specialist Group. (2003). Cycads: status survey and conservation action plan. Gland, Switzerland and Cambridge, UK: IUCN.
Lacher, Jr. T. E., Butchart, S. H., Gumbs, R., Long, B., López-Gallego, C., Raimondo, D. et al. (2025). The status, threats and conservation of critically endangered species. Nature Reviews Biodiversity, 1, 421–438. https://doi.org/10.1038/s44358-025-00059-4
Laguna, E., Navarro, A., Pérez-Rovira, P., Ferrando, I., & Ferrer-Gallego, P. P. (2016). Translocation of Limonium perplexum (Plumbaginaceae), a threatened coastal endemic. Plant Ecology, 217, 1183–1194. https://doi.org/10.1007/s11258-016-0643-4
Lande, R. (1993). Risks of population extinction from demographic and environmental stochasticity and random catastrophes. The American Naturalist, 142, 911–927. https://doi.org/10.1086/285580
Lázaro-Zermeño, J. M., González-Espinosa, M., Mendoza, A., Martínez-Ramos, M., & Quintana-Ascencio, P. F. (2011). Individual growth, reproduction and population dynamics of Dioon merolae (Zamiaceae) under different leaf harvest histories in Central Chiapas, Mexico. Forest Ecology and Management, 261, 427–439. https://doi.org/10.1016/j.foreco.2010.10.028
Liu, Y., Wang, S., Li, L., Yang, T., Dong, S., Wei, T. et al. (2022). The Cycas genome and the early evolution of seed plants. Nature Plants, 8, 389–401. https://doi.org/10.1038/s41477-022-01129-7
López-Gallego, C. (2008). Demographic variation in cycad populations inhabiting contrasting forest fragments. Biodiversity and Conservation, 17, 1213-1225. https://doi.org/10.1007/s10531-007-9263-6
Mankga, L.T., & Yessoufou, K. (2017). Factors driving the global decline of cycad diversity. AoB Plants, 9, 1–10. https://doi.org/10.1093/aobpla/plx022
Marshall, V. M., Lewis, M. M., & Ostendorf, B. (2012). Buffel grass (Cenchrus ciliaris) as an invader and threat to biodiversity in arid environments: a review. Journal of Arid Environments, 78, 1–12. https://doi.org/10.1016/j.jaridenv.2011.11.005
Martínez-Domínguez, L., Nicolalde-Morejón, F., Vergara-Silva, F., & Stevenson, D.W. (2023). A review of taxonomic concepts and species delimitation in Cycadales. The Botanical Review, 90, 33–66. https://doi.org/10.1007/s12229-023-09293-x
Montalvo-Fernández, G., Carnevali, G., Vovides, A. P., Muñoz-López, J., & Martínez-Castillo, J. (2020). Evaluación del riesgo de extinción de Zamia prasina en la Provincia Biótica Península de Yucatán. Revista Mexicana de Biodiversidad, 91, 1–9. https://doi.org/10.22201/ib.20078706e.2020.91.3012
QGIS Development Team. (2024). QGIS Geographic Information System. (Version 3.34.3-Prizren). Open Source Geospatial Foundation Project. http://qgis.org
Octavio-Aguilar, P., Rivera-Fernández, A., Iglesias-Andreu, L. G., Vovides, P. A., & de Cáceres-González, F. F. N. (2017). Extinction risk of Zamia inermis: a demographic study in its single natural population. Biodiversity and Conservation, 26, 787–800. https://doi.org/10.1007/s10531-016-1270-z
R Core Team. (2023). R: a language and environment for statistical computing. R Foundation for Statistical Computing, Vienna, Austria. Retrieved on February 29, 2026 from: https://www.R-project.org/
Raimondo, D. C., & Donaldson, J. S. (2003). Responses of cycads with different life histories to the impact of plant collecting: Simulation models to determine important life history stages and population recovery times. Biological Conservation, 111, 345–358. https://doi.org/10.1016/S0006-3207(02)00303-8
Rzedowski, J. (1978). Vegetación de México. Ciudad de México: Editorial Limusa.
Sánchez, Ó., Medellín, R. Aldama, A., Goettsch, B., Soberón, J., & Tambutti, M. (2007). Método de evaluación del riesgo de extinción de las especies silvestres en México (MER). Ciudad de México: Secretaría de Medio Ambiente y Recursos Naturales/ Instituto Nacional de Ecología/ Instituto de Ecología de la Universidad Nacional Autónoma de México/ Comisión Nacional para el Conocimiento y Uso de la Biodiversidad.
Sánchez-Escalante, J. J., Reina-Guerrero, A. L., & Van Devender, T. R. (2017). Lista anotada de la flora vascular de la sierra de Mazatán (Huérfana), centro de Sonora, México. Phytoneuron, 2017, 1–44.
Salafsky, N., Relton, C., Young, B. E., Lamarre, P., Böhm, M., Chénier, M. et al. (2025). Classification of direct threats to the conservation of ecosystems and species 4.0. Conservation Biology, 39, 1–19. https://doi.org/10.1111/cobi.14434
Segalla, R., Telles, F. J., Pinheiro, F., & Morellato, P. (2019). A review of current knowledge of Zamiaceae, with emphasis on Zamia from South America. Tropical Conservation Science, 12, 1–21. https://doi.org/10.1177/1940082919877479
Semarnat (Secretaría de Medio Ambiente y Recursos Naturales). (2010) Norma Oficial Mexicana NOM-059-SEMARNAT-2010. Secretaría de Medio Ambiente y Recursos Naturales (Semarnat), Ciudad de México, México. Retrieved on February 28, 2024 from: https://dof.gob.mx/nota_detalle_popup.php?codigo=5173091
Semarnat (Secretaría de Medio Ambiente y Recursos Naturales). (2019). Modificación del Anexo Normativo III, Lista de especies en riesgo de la Norma Oficial Mexicana NOM-059-SEMARNAT-2010. México City, México. Retrieved on December 19, 2023 from: https://www.dof.gob.mx/nota_detalle.php?codigo=5578808&fecha=14/11/2019
Shaffer, M. L. (1981). Minimum population sizes for species conservation. Bioscience, 31, 131–134. https://doi.org/10.2307/1308256
Stringham, O. C., Toomes, A., Kanishka, A. M., Mitchell, L., Heinrich, S., Ross, J. V. et al. (2021). A guide to using the internet to monitor and quantify the wildlife trade. Conservation Biology, 35, 1130–1139. https://doi.org/10.1111/cobi.13675
Stubben, C. J., & Milligan, B. G. (2007). Estimating and analyzing demographic models using the popbio package in R. Journal of Statistical Software, 22, 1-23. https://doi.org/10.18637/jss.v022.i11
Wickham, H. (2016). ggplot2. Elegant graphics for data analysis. New York: Springer Cham. https://doi.org/10.1007/978-0-387-98141-3
Velasco-García, M. V., Valdez-Hernández, J. I., Ramírez-Herrera, C., Hernández-Hernández, M. L., López-Upton, J., López-Mata, L. et al. (2016). Structure, heterogeneity of stages and spatial dispersion pattern of Dioon holmgrenii (Zamiaceae). Botanical Sciences, 94, 75–87. https://doi.org/10.17129/botsci.258
Vovides, A. P., Pérez-Farrera, M. A., & Iglesias, C. (2010). Cycad propagation by rural nurseries in Mexico as an alternative conservation strategy: 20 years on. Kew Bulletin, 65, 603–611. https://doi.org/10.1007/s12225-010-9240-1
Yates, C. J., & Ladd, P. G. (2004). Breeding system, pollination and demography in the rare granite endemic shrub Verticordia staminosa ssp. staminosa in south‐west Western Australia. Austral Ecology, 29, 189–200. https://doi.org/10.1111/j.1442-9993.2004.01336.x
Zhao, M., Pu, W., Du, J., Liu, W., Zhang, Q., Liu, Y. et al. (2023). Effect of crevice density on biological soil crust development on rock cut slope in mountainous regions, Sichuan, China. Ecological Processes, 12, 1–18. https://doi.org/10.1186/s13717-022-00416-7
Zhong, Y., Chen, C., & Wang, Y. (2021). Biological and extrinsic correlates of extinction risk in Chinese lizards. Current Zoology, 68, 285–293. https://doi.org/10.1093/cz/zoab040
