Every tree inside each 40x40m subplot will be identified to species, and its diameter at breast height (DBH) will be measured. The historical census only measured trees >8" in diameter, but I plan to update the methods to match the Smithsonia Centre for Tropical Forest science  ForestGeo methods (Condit 1998). 

This means that starting in 2019, every tree taller than 1.3m, and >1cm DBH will be mapped, identified and measured. The new method includes the old method allowing for 80 year comparisons, but it modernizes it potentially allowing for global cross-plot comparisons. 

Map of the 27 Ha plot, the 40x40m measurement grid, and the walking trails.


The primary challenge is the number of trees that occur within a 27Ha plot. We have a tremendous advantage in that the grid is already present, and many of the trees are already tagged. 

This challenge is why I require a crew of 6 technicians to tackle the problem.

Pre Analysis Plan

Another advantage of using the ForestGeo methods is that there is an R package, designed for analysis of forest dynamics using data in that format. 


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