TY - Abstract A1 - Ellis, A1 - G., A1 - Moses, A1 - C., A1 - Swart, A1 - P.K., M A1 - P., A1 - Moses, A1 - C., T1 - Contributions of natural and anthropogenic nitrogen in the Florida Keys reef tract using stable isotope compositor and natural sterol concentration. N1 - R828020C005 ER - TY - CONF A1 - Swart, A1 - K, P T1 - The state of N isotopic research in the Florida Keys. N1 - R828020C005 ER -