Sample ID, d15N ,d13C,C:N G021_POC_T,4.4,-18.7,7.8 G021_POC_Z,,,7.6 G026_POC_T,4.1,-17.7,6.6 G026_POC_Z,2.2,-17.9,6.4 G028_POC_T,4.1,-17.6,6 G028_POC_Z,1.2,-17.8,5.1 G029_POC_T,4.5,-17.7,7.1 G029_POC_Z,2,-18.2,6.1 G036_POC_T,4.8,-18,8.1 G036_POC_Z,2.8,-18.7,8.8 G040_POC_T,3.8,-17.9,6.5 G040_POC_Z,0.8,-18.4,5 G048_POC_T,4.3,-18.5,6.5 G048_POC_Z,,-19.2,6.3 G049_POC_T,4.1,-19,8 G049_POC_Z,1.9,-19.3,7.6 G050_POC_T,4.4,-17,6.6 G050_POC_Z,2.2,-17.4,6.5 G053_POC_T,4.3,-18.1,7.1 G053_POC_Z,2.3,-18,6.3 G054_POC_T,3.6,-18.2,6.4 G054_POC_Z,1.3,-18.6,5.3 G060_POC_T,4.2,-18.2,6.3 G060_POC_Z,1.4,-18.1,4.9 G063_POC_T,3.9,-17.4,6.3 G063_POC_Z,,-17.8,6.1 G068_POC_T,2.6,-18.7,7.3 G068_POC_Z,,,5.9 G075_POC_T,4.3,-17.5,6.6 G075_POC_Z,-0.1,-17.7,5.7 G078_POC_T,4.1,-17.4,6.9 G078_POC_Z,0.7,-16.9,5.7 G079_POC_T,4,-17.8,7 G079_POC_Z,,-18,6.2 G080_POC_T,4.2,-17.6,7.2 G080_POC_Z,1.8,-18,7.4 G125_POR_T,4,-15.6,7.4 G125_POR_Z,2,-16.7,5.7 G126_POR_T,4.1,-16.7,7.4 G126_POR_Z,1.7,-17.5,5.8 G128_POR_T,3.8,-16.8,7 G128_POR_Z,1.8,-18.1,6.3 G130_POR_T,4.1,-16,6.4 G130_POR_Z,1.9,-16.9,5.5 G135_POR_T,3.9,-16.3,7.8 G135_POR_Z,2.1,-16.5,6.3 G140_POR_T,3.9,-15.9,7.1 G140_POR_Z,1.7,-16.7,5.5 G141_POR_T,5.3,-17.4,8.2 G141_POR_Z,3.6,-18.3,6.7 G142_POR_T,3.5,-16.7,7.6 G142_POR_Z,2.8,-17.4,5.7 G149_POR_T,4,-17,7.2 G149_POR_Z,2.4,-17.4,5.5 G151_POR_T,4.1,-17.5,7.1 G151_POR_Z,2.9,-18.2,6 R001_POC_T,2.7,-17.8,5.5 R001_POC_Z,0.2,-18.4,5.5 R006_POC_T,4.6,-18.1,6 R006_POC_Z,3.4,-18.9,7.7 R009_POC_T,3.7,-17.7,5.5 R009_POC_Z,2.4,-18.3,6.2 R011_POC_T,4.3,-17.3,5.8 R011_POC_Z,2.2,-17.7,6.1 R015_POC_T,3.8,-18.2,5.5 R015_POC_Z,0.4,-18.8,5.3 R020_POC_T,4,-18.4,5.6 R020_POC_Z,,-19.9,7.3 R023_POC_T,4.1,-17,6.3 R023_POC_Z,2,-17.9,7.8 R024_POC_T,4.1,-17.1,7.1 R024_POC_Z,1.9,-17,7.2 R026_POC_T,3.4,-17.4,6.7 R026_POC_Z,,-18,6.7 R031_POC_T,4.1,-17,7.5 R031_POC_Z,1.3,-16.8,6.1 R036_POC_T,3.7,-18,8.1 R036_POC_Z,,-18.9,8.4 R038_POC_T,4,-16.9,7.7 R038_POC_Z,,-17.3,6.9 R045_POC_T,4.6,-17.6,5.9 R045_POC_Z,2.3,-17.8,6 R046_POC_T,4.2,-18.2,6 R046_POC_Z,0.7,-19,5.4 R050_POC_T,3.2,-18.2,6.1 R050_POC_Z,1.1,-18.3,5.5 R058_POC_T,4.4,-18.9,6.5 R058_POC_Z,2.8,-19.8,7.7 R059_POC_T,4.1,-18.1,5.6 R059_POC_Z,2.6,-18.3,6.2 R060_POC_T,5,-19,6.1 R060_POC_Z,3.2,-19.1, G173_POR_Z,2.5,-18.9,5.8 G161_POR_T,2.9,-17.9,7.6 G154_POR_Z,2.6,-17.8,5.5 G169_POR_Z,2.7,-18.7,6.2 G153_POR_T,3.9,-17.3,7.2 G173_POR_T,3.5,-18.6,7.2 G154_POR_T,4.2,-17,6.4 G153_POR_Z,2.7,-17.6,5.6 G163_POR_T,1.5,-17.9,7.2 G169_POR_T,3.4,-18.1,6.8 G163_POR_Z,2.6,-18,5.4 G161_POR_Z,3.9,-18.1,5.4 G186_POR_T,2,-16.8,6.9 G190_POR_Z,3,-17.8,6.2 G200_POR_T,3.8,-16.7,7.4 G197_POR_Z,2.2,-17.3,5.4 G200_POR_Z,2.5,-17.2,6.3 G176_POR_T,2.4,-18.1,7.7 G177_POR_T,3.8,-18.6,7.8 G185_POR_T,4.7,-17,7.1 G185_POR_Z,3.6,-18,5.7 G190_POR_T,3.3,-17.3,7.3 G192_POR_T,3.6,-17.2,7.2 G197_POR_T,4,-16.7,6.2 G176_POR_Z,2.5,-18.4,5.9 G177_POR_Z,3.5,-18.8,5.8 G186_POR_Z,,-17.7,5.8 G192_POR_Z,1.1,-18.3,6 R122_POR_T,3.1,-18.7,7.4 R122_POR_Z,2.3,-19.5,6.5 R129_POR_T,4,-16.6,6.9 R129_POR_Z,2.2,-17.4,5.4 R128_POR_T,3.8,-17,6.9 R128_POR_Z,2.9,-17.5,5.6 R131_POR_T,3.7,-15.8,5.7 R141_POR_Z,2.1,-16.6,5.4 R138_POR_T,3.5,-17.1,6.8 R138_POR_Z,1.9,-17.7,5.7 R140_POR_T,3.5,-18.3,6.8 R140_POR_Z,2.4,-18.8,6.4 R161_POR_T,2.7,-17.1,7.8 R161_POR_Z,1.4,-17.6,5.9 R162_POR_T,3.4,-16.9,7.7 R162_POR_Z,2.9,-17.4,6.4 R170_POR_T,3,-16.6,7.2 R170_POR_Z,1.9,-16.9,5.6 R171_POR_T,3.2,-16.5,7.7 R171_POR_Z,2.1,-16.9,5.6 R172_POR_T,3.4,-16.8,7.6 R172_POR_Z,1.7,-17.1,5.8 R174_POR_T,3.2,-17.1,7.2 R174_POR_Z,2.1,-18,6.1