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In 2014, Harvard Forest completed the initial mapping for its 35-hectare (85-acre) forest dynamics monitoring plot within the Smithsonian/CTFS Forest Global Earth Observatory (ForestGEO). Every woody stem over 1cm in diameter in the plot has been GIS-mapped, tagged, and measured - over 116,000 stems in all. The trees in the plot will be remeasured every five years. Harvard Forest is one of the first temperate sites to be added to the observatory, and the largest site of its kind in North America.