Skip to main content

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