Information for data associated with: Evolutionary effects of nitrogen are not easily predicted from ecological responses Joseph Waterton, Mark Hammond, Jennifer A. Lau Data was collected in 2020 from a field experiment in a long-term ecological research site (Kellogg Biological Station LTER site in Michigan, USA). The Data folder contains 3 separate datasets as csv files, each with accompanying .txt metadata files: 1) a dataset of individual level data (Waterton2022_NitrogenEvolution_Individual_Data.csv). "NA" values in cells show no values for that variable, either due to missed measurements or mortality prior to measurement. 2) a dataset of annual net primary productivity (ANPP; Waterton2022_NitrogenEvolution_ANPP_Data.csv) 3) a dataset of light measurements (Waterton2022_NitrogenEvolution_Light_Data.csv). The Data folder contains an R script for reproducing the analyses and figures (Waterton2022_NitrogenEvolution_Script.R).