Table 2. Mean stable isotope values (‰ ± SD of the mean) (n) for coral organic fractions
Isotope Organic fraction Symbiotic Nonsymbiotic P. major
δ13C Algae -13.84 ± 2.02 (17) n/a
Animal -16.53 ± 2.22 (17) -20.30 ± 0.83 (5)
Organic matrix -24.31 ± 5.60 (23) -26.08 ± 5.52 (17) -23.23 ± 2.60 (3)
δ15N Algae 4.35 ± 1.23 (18) n/a
Animal 4.56 ± 1.40 (17) 8.08 ± 1.23 (5)
Organic matrix 4.09 ± 1.51 (24) 12.28 ± 1.81 (17) 4.66 ± 2.72 (3)
  • Data for Oculina spp. are included with nonsymbiotic groups (see Results and Discussion). n/a, not applicable.