3.4 Bulk stable isotopes
Bulk δ13C and δ15N values were not
linearly correlated (R = 0.004; Fig. 6, see bulk isotopic values in
Table S2). Along the δ15N axis, suspension feeders
have more negative δ15N values than the remaining
functional groups (Fig. 6). Along the δ13C axis,
planktivores have the most negative values, and scavengers and benthic
predators the most positive δ13C values.