Martorell C., Montañana D. M., Ureta C., Mandujano M. C., Assessing the importance of multiple threats to an endangered globose cactus in Mexico: Cattle grazing, looting and climate change, Biological Conservation, 2015, 181:73-81, doi: 10.1016/j.biocon.2014.10.035
It combines the density and reproduction of Coryphantha werdermannii with demographic models and climatic niche projections. It analyses grazing, human pressure, plant collection and climate. It emphasises the role of adult persistence and differences between local density, population growth rate and potential area of occurrence.