Effects of long-term nitrogen addition on Solidago altissima stem morphology, size, and herbivory at Kellogg Biological Station 2016-2022

We surveyed naturally occurring tall goldenrod (Solidago altissima) plants in a long-term nitrogen addition field experiment at the Kellogg Biological Station's T7 untilled succession plots in the Main Cropping System Experiment (https://lter.kbs.msu.edu/research/long-term-experiments/main-cropping-system-experiment/). We collected data on the defensive stem nodding morph (which helps plants evade apex-galling herbivores) and presence of galls in 2016, 2021, and 2022.