University of Kansas Field Station: Forest demography, 1980 – 2015. On ten study plots established on three management units all live trees with a dbh > 7.5 cm (3 in) were identified to species, measured, and tagged. Trees were initially measured in 1980/1981 and re-measured in three successive tim

In 1980 researchers at the University of Kansas initiated a
long-term experiment monitoring the composition of oak-hickory
forest communities at the University’s field station near Lawrence,
Kansas. The purpose of the study was to determine how forest species
composition varied temporally across distinct habitats that varied
in topography, elevation, sun exposure, management history and
successional stage. Ten permanent sites were sampled approximately
each decade with data collection periods of 1980/81, 1993/95,
2002/03, and 2014/15. Trees with a minimum diameter at breast height
(dbh) of ≥ 7.5 cm were tagged, identified to species and measured.
Trees will be measured again in 2025/26.