Code and data for project investigating cycles of high and low grass cover on the Jornada for the past 100 years.
data - Contains raw data files and R scripts for handling data
Figures - Contains final figures for paper
other data sets - Contains data and scripts analyzing data from other locations
supplement - Analyses for supplement of paper
Run scripts in 'data' folder to prepare quadrat grass data and climate variable data for analyses.
- data/process_raw_plant_data.R
- data/get_climate_data.R
Principal components analysis of short-term climate variables is done in principal_components.R.
The main models correlating grass with climate variables are run in grass_pdo_model_selection_ARIMA.Rmd. This script depends on intermediate csv files created in the first step. Creates results_aic_table_arima.csv.
- plot_grass_func_groups_timeseries.R creates plot of grass functional groups timeseries. Fig. 2 in paper.