Data

Data on organism occurrences can be directly downloaded in a csv file from gbif.org.
Data on nitrogen deposition levels in the Netherlands can be downloaded from RIVM website: rivm.nl.

library(tidyverse)
library(terra)

# import data data directly from GitHub

Nitrogen_2018 <- 
  rast("https://raw.githubusercontent.com/ucrdatacenter/projects/main/SCIENVI201/2022h1/Data/nitrogen/depo_ntot_2018.asc")

Chaffinch_2018 <- 
  read_delim("https://raw.githubusercontent.com/ucrdatacenter/projects/main/SCIENVI201/2022h1/Data/chaffinch/chaffinch_2018.csv",
             delim = "\t", escape_double = FALSE, trim_ws = TRUE)

Workshop code

The code from the workshop is available here.