Appendix F. Mean 15N signatures of macrofauna exposed to 15N-labeled hybrid Spartina detritus on the surface vs. subsurface in litter bags. LevinLisa A. NeiraCarlos GrosholzEdwin D. 2016 Mean 15N signatures of macrofauna exposed to 15N-labeled hybrid Spartina detritus on the surface vs. subsurface in litter bags.