Méndez M., Durán R., Olmsted I., Oyama K., Population dynamics of Pterocereus gaumeri, a rare and endemic columnar cactus of Mexico, Biotropica, 2004, 36(4):492-504, doi: 10.1111/j.1744-7429.2004.tb00345.x
Repeated observations of two Pterocereus gaumeri populations in Yucatán were combined with germination and seedling survival experiments. Matrix models compare the importance of adult survival and recruitment. The findings concern 1997–1999 and the particular sites rather than the present trend of the entire species.