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Figure 4


Fig. 4. (A) Dive heart rate (fH) (total number of beats/dive duration) vs dive duration for emperor penguins diving at the isolated dive hole. Individual birds (EP) are denoted by colors and symbols (see legend), N=9 birds, 125 dives. (B) Log transformation of dive fH vs dive duration with regression equation for pooled dives: y=–58.5361x+2.00996, r2=0.755, P<0.0001.





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