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Table 5 Description of generalized additive models with covariates, R 2, ΔAIC, and AUC before and after k-fold cross-validation

From: Behavior of satellite-tracked Antarctic minke whales (Balaenoptera bonaerensis) in relation to environmental factors around the western Antarctic Peninsula

Covariates

R 2

ΔAIC

AUC before

AUC after

Whale 1

Jday + lat + SIE + ΔSIE + ΔSST + Δbath

0.546

0

0.9672

0.9527

SIE + ΔSIE

0.232

197

0.8526

0.8302

Whale 2

SIE + ΔSIE + SST + ΔSST + bath + Δbath

0.589

0

0.9690

0.9498

SIE + ΔSIE

0.107

223

0.7647

0.6621

Whale 3

Lat + SIE + ΔSIE + SST + ΔSST + bath + Δbath

0.762

0

0.9984

0.9974

SIE + ΔSIE

0.535

275

0.9523

0.9520

  1. All models predicted the MSSI and used a Gaussian distribution
  2. Jday Julian day, lat latitude, SIE distance to the sea ice extent (km), ΔSIE change in distance to the SIE, SST sea surface temperature (C), ΔSST change in SST, bath bathymetry (km), Δbath change in bathymetry