Fig 1.
a) Ceratozamia brevifrons with female cone; b) C. morettii with male cone; c) C. tenuis with female cone.
Fig 2.
Study area in the Sierra de Chiconquiaco, Veracruz, Mexico.
Table 1.
Bioclimatic variables (names and units) used as predictors in the species distribution models of Tepezmaite cycads (Ceratozamia brevifrons, C. morettii, and C. tenuis).
Fig 3.
Potential distribution of the studied Ceratozamia species with the locations of occurrence of each species (points) in the Sierra de Chiconquiaco, Veracruz, Mexico; the grey shadow represents topographic relief.
Table 2.
The threshold to categorize the suitability and evaluation metrics for the ESDM for each Ceratozamia studied.
Table 3.
Variable importance (%) for the ensemble species distribution model of each Ceratozamia studied.
Fig 4.
Potential distribution of Ceratozamia brevifrons a) in the past; b) present; c) future; C. morettii d) in the past; e) present; f) future; and C. tenuis g) in the past; h) present; i) future. Red: high suitability; Orange: medium.
Table 4.
Projected suitability area (km2) of the three species of Ceratozamia studied in the various times past (last maximum glacial), present, and future (2080).
Table 5.
Percentage of change between the different periods of the studied Tepezmaite cycads.