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.