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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)

From: Leopard seal diets in a rapidly warming polar region vary by year, season, sex, and body size

Model DIC ∆DIC Median variance (σ)
CNSplasma ~ (1|Year) 32.77379 σyear = 0.772
CNSplasma ~ Sex + (1|Year) 33.85499 1.0812 σyear = 0.911
σSex = 1.684
CNSplasma ~ (1|Year/Seal ID) 40.84313 8.0693 σyear = 0.753
σSeal ID = 0.103
CNSplasma ~ Mass +  (1|Year) 45.78776 13.014 σyear = 0.764
σMass = 0.091
CNSRBC ~ (1|Year) 29.58741 σyear = 0.193
CNSRBC ~ Sex + (1|Year) 32.38981 2.8024 σyear = 0.210
σSex = 0.281
CNSRBC ~ Mass + (1|Year) 39.74659 10.1592 σyear = 0.195
σMass = 0.063
CNSRBC ~ (1|Year/Seal ID) 107.9329 78.3455 σyear = 0.178
σSeal ID = 0.134
  1. Median variance (σ) reflects the 50% quantiles of variance for each model effect. Year and seal ID were random effects, sex was a fixed effect, and mass was a continuous effect
  2. CNSplasma: plasma tissue, CNSRBC: red blood cell tissue