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Table 3 Loadings and variance explained for PC axes used in analyses of reproductive success and trip metrics

From: Foraging behavior links climate variability and reproduction in North Pacific albatrosses

Variable MEI NPGO Distance to TZCF SSTa Cumulative Prop. Var.
Reproductive success analyses (1981–2012)
Laysan albatross
PC1LAAL, annual 0.43 −0.52 −0.52 −0.52 0.71
PC2 LAAL, annual 0.79 −0.16 0.50 0.32 0.88
Black-footed albatross    
PC1 BFAL, annual 0.44 −0.53 −0.51 −0.52 0.69
PC2 BFAL, annual 0.79 −0.11 0.53 0.27 0.85
Trip level analyses (2002–2012)
Laysan albatross- Incubating trips    
PC1 LAAL, incubating 0.61 0.26 −0.52 −0.54 0.53
PC2 LAAL, incubating −0.28 0.75 −0.41 0.43 0.84
Black-footed albatross- Incubating trips
PC1 BFAL, incubating 0.49 0.46 −0.49 −0.56 0.44
PC2 BFAL, incubating −0.66 0.75 0.31 −0.19 0.76
Laysan albatross- Brooding trips
PC1 LAAL, brooding −0.57 0.43 0.41 0.57 0.49
PC2 LAAL, brooding 0.15 −0.26 0.91 −0.27 0.71
Black-footed albatross- Brooding trips
PC1 BFAL, brooding −0.53 0.40 0.60 −0.44 0.38
PC2 BFAL, brooding −0.49 0.32 0.62 −0.32 0.64
  1. aAfter model selection mean SST was used for models of reproductive success and Black-footed albatross trip metrics, while minimum SST was used for models of Laysan albatross trip metrics