. Author manuscript; available in PMC: 2019 Aug 30.

Published in final edited form as: Rapid Commun Mass Spectrom. 2018 Aug 30;32(16):1425–1438. doi: 10.1002/rcm.8168

Table 3.

Means and standard deviations (sd) of δ¹³C and δ¹⁵N values and C:N ratios for each layer and overall of the three cetacean species sampled in experiment 1.

	Mean δ¹³C	s.d. δ¹³C	Mean δ¹⁵N	s.d. δ¹⁵N	Mean C:N	s.d. C:N
Sperm whale
Outer	−17.2‰	0.2‰	17.2‰	0.4‰	3.6	0.1
Middle	−17.0‰	0.3‰	16.9‰	0.2‰	3.4	0.2
Inner	−16.2‰	0.1‰	17.5‰	0.2‰	3.1	0.1
Overall	−16.8‰	0.5‰	17.2‰	0.4‰	3.4	0.2

Humpback whale
Outer	−17.4‰	0.4‰	13.4‰	0.1‰	3.3	0.1
Middle	−17.4‰	0.1‰	12.1‰	0.1‰	3.3	<0.1
Inner	−17.6‰	0.2‰	11.7‰	0.2‰	3.2	<0.1
Overall	−17.5‰	0.3‰	12.4‰	0.8‰	3.3	0.1

Fin whale
Outer	−20.4‰	0.3‰	12.3‰	0.4‰	3.6	0.1
Middle	−20.3‰	0.1‰	11.8‰	0.5‰	3.6	0.1
Inner	−20.1‰	0.1‰	12.1‰	0.1‰	3.5	0.1
Overall	−20.2‰	0.2‰	12.1‰	0.4‰	3.5	0.1