Supplement to: Goulden, Sara K Enders; Ohkouchi, Naohiko; Freeman, Katherine H; Chikaraishi, Yoshito; Ogawa, Nanako O; Suga, Hisami; Chadwick, Oliver; Houlton, Benjamin Z (2019): Strong correspondence between nitrogen isotope composition of foliage and chlorin across a rainfall gradient: implications for paleo-reconstruction of the nitrogen cycle. Biogeosciences, 16(19), 3869-3882, https://doi.org/10.5194/bg-16-3869-2019