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Table 6 Summary on pivotal PCA loadings based on standardized trophic markers incl. fatty acid (FA) ratios and stable isotope (SI) data of fish species Ctenolabrus rupestris, Pomatoschistus minutus, Pomatoschistus pictus, Myoxocephalus scorpius and Taurulus bubalis collected from 2009 to 2011 explaining 63.4 % of variability on the first two axes (see Fig. 4)

From: Trophic niche partitioning of littoral fish species from the rocky intertidal of Helgoland, Germany

Variable PC1 Variable PC2
DHA/EPA 0.566 PUFA/SFA 0.862
δ 13C −0.519 18:1n9/18:1n7 −0.431
18:1n9/18:1n7 0.502 δ 13C −0.255
δ 15N −0.396 δ 15N −0.070
PUFA/SFA 0.041 DHA/EPA 0.037