Data from: Differential defoliation and mortality of white spruce and balsam fir by Eastern spruce budworm

Each row is an individual tree. Column names and definitions (See Corona et al. 2022 for more information): Site: KDD or KPE Species: WS = White spruce; BF = Balsam fir Dead0_Alive1_2019: This indicates whether in July 2019 the tree was completely defoliated (no needles; classified as 'dead') or had green needles (classified as 'alive'). Note that trees had been monitored up to 2021, and no tree classified as 'dead' regained needles. DBH_cm: Diameter at breast height, measured in centimetres. CrownClass: We adapted crown classes from DeYoung and Sutton (2016) as an assessment of tree height relative to other trees in the stand, based on access to sunlight. Open grown (OP) trees either grew separated from other trees or had a crown that substantially surpassed (in height) the trees that surrounded it. Dominant (DO) were trees that were able to intercept more sunlight from the top and sides of the tree for most of the day than surrounding trees. Codominant (CO) trees were similar in height to surrounding trees and intercepted sunlight via the top of the crown for most of the day. Intermediate (IN) trees gather little sunlight through small gaps within the canopies of CO and DO trees in their respective populations. Overtopped (OV) were subcanopy trees that had little to no direct sunlight.