Portilla-Alonso R. M., Martorell C., Demographic consequences of chronic anthropogenic disturbance on three populations of the endangered globose cactus Coryphantha werdermannii, Journal of Arid Environments, 2011, 75(6):509-515, doi: 10.1016/j.jaridenv.2011.01.015
A comparison of three Coryphantha werdermannii populations in Cuatro Ciénegas with different levels of chronic human pressure. Observations of growth, survival, reproduction and seedling emergence were used in matrix models. The paper shows different effects of disturbance on small and large plants and the model's sensitivity to recruitment assumptions.