Table 4 Correlation coefficient (R), p-value (P) and formula resulting from a Pearson’s correlation between δ13C and δ15N plasma values of individual penguin species as well as all species combined versus the distance between their mean foraging locations and the coastline of Marion Island (distTOcoast). a indicates a significant correlation
From: A critical assessment of marine predator isoscapes within the southern Indian Ocean
δ13C vs distTOcoast | δ15N vs distTOcoast | |||||
|---|---|---|---|---|---|---|
R | P | Formula | R | P | Formula | |
All species combined | ||||||
−0.26 | 0.08 | δ13C = 0.01 (distTOcoast) - 21.99 | −0.49 | < 0.01a | δ15N = 0.03 (distTOcoast) + 9.69 | |
Penguins | ||||||
Gentoo | 0.03 | 0.92 | δ13C = 0.01 (distTOcoast) - 21.74 | −0.10 | 0.71 | δ15N = 0.03 (distTOcoast) + 10.32 |
Macaroni | 0.08 | 0.77 | δ13C = 0.001 (distTOcoast) - 22.33 | −0.10 | 0.70 | δ15N = 0.002 (distTOcoast) + 8.80 |
Rockhopper | 0.66 | 0.05a | δ13C = 0.02 (distTOcoast) - 22.82 | −0.13 | 0.74 | δ15N = 0.01 (distTOcoast) + 8.67 |