Sources,MEANd13C,SDd13C,MEANd15N,SDd15N POM,-15.38444444,1.279073015,13.06222222,1.427128041 Macro,-12.52055556,1.911260892,14.64888889,0.725434579 Epilith,-7.863333333,2.868523139,14.24777778,1.608063881