In 1990, three new plots (plot number 13, 14, 15) were added to the 12 initial ones in order to test a new silvicultural treatment. At present, they are still monitored as controls with no treatment applied at all so that they are used for diversity monitoring. In 1991/1992, another very big plot (P16, 25 ha) was also established in the South-West part of the site, on soils developed over migmatite. This later plot is dedicated to studies dealing with the functioning of the undisturbed forest ecosystem (determinism of spatial patterns, phenology, population genetics). Full botanical determination has been achieved on those 4 plots very recently so that more than 800 botanical tree species have now been recorded in Paracou. A permanent line-transect sampling cross the plots to estimate medium- and large-vertebrate population densities.
Because we are less interested in short-term forest dynamics in the 25ha plot, full inventory campaigns take place every 5 years. A 6-months work for a team of 6 people.