Table 4 DIC model selection results for the δ¹³C, δ¹⁵N, δ³⁴S stable isotope (CNS) Bayesian mixing models (MixSIAR) used to estimate diets of leopard seals based on stable isotope values from plasma and red blood cells (RBC) sampled from seals at Cape Shirreff, Livingston Island in 2013, 2014, and 2017 (n = 23)

CNS_plasma ~ (1|Year)

–

σ_year = 0.772

CNS_plasma ~ Sex + (1|Year)

σ_year = 0.911

σ_Sex = 1.684

CNS_plasma ~ (1|Year/Seal ID)

σ_year = 0.753

σ_{Seal ID} = 0.103

CNS_plasma ~ Mass +  (1|Year)

σ_year = 0.764

σ_Mass = 0.091

CNS_RBC ~ (1|Year)

–

σ_year = 0.193

CNS_RBC ~ Sex + (1|Year)

σ_year = 0.210

σ_Sex = 0.281

CNS_RBC ~ Mass + (1|Year)

σ_year = 0.195

σ_Mass = 0.063

CNS_RBC ~ (1|Year/Seal ID)

σ_year = 0.178

σ_{Seal ID} = 0.134