This file includes mean matrices for 12 populations of Khaya senegalensis surveyed in Benin (West Africa) from 2004 to 2007. For each population, I averaged three yearly transition matrices (2004-2005, 2005-2006, 2006-2007). These matrices were built using demographic data was collected from the 12 populations using 1-ha plots for each population (two adjacent subplots of 0.5 ha, separated by the river bed when the population was in a gallery forest