5.2 Study Species
Tree species were selected to focus on a parsimonious set of species
such that within each region, we studied at least one relatively
isohydric species and at least one relatively anisohydric species (using
results from previous work, including Roman et al ., 2015 and Vose
& Elliot, 2016). Overall, we targeted A. saccharum (isohydric),L. tulipifera (isohydric), and Q. alba (anisohydric) and
sampled each of these species when present. In MO 85yo we sampledA. saccharum and Q. alba . In the NC_W chronosequence we
sampled L. tulipifera and Q. alba at each respective
stand. In the NC_E chronosequence we sampled Q. alba andL. tulipifera in the 85yo and 35yo stands, and A.
saccharum in the neighboring lowland hardwood stand. In the IN 15yo and
IN 35yo, we sampled L. tulipifera and Q. alba . In IN 85yo
we sampled Q. alba, A. saccharum, and L. tulipifera . Tree
species and climate conditions across stands and regions are summarized
in Table 1.