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. 2014 Jul 29;9(7):e103642. doi: 10.1371/journal.pone.0103642

Table 3. Modelling the relationships between blood δ13C, δ15N values (‰) and blood Hg concentration (µg⋅g−1 dw) in male and female pre-laying snow petrels.

Dependent variable Sex Independent variable SS Df F p-value
Hg Males δ13C 2.8 1,27 3.9 0.060
δ15N 1.7 1,27 2.2 0.150
Females δ13C 5.7 1,14 9.1 0.009
δ15N 8.6 1,14 20.6 >0.001

*SS = Sum of squares.