Fig 7. Percent contribution of invertebrate sources to fish diets.

The percent contribution of invertebrate sources to pelagic (Chinook salmon) and demersal (sculpin) fish diets in the Nisqually River Delta was predicted using a Bayesian mixing model of δ¹³C, δ¹⁵N, and δ³⁴S isotopes. Bar plots show the estimated mean posterior probability. Sources that contributed to <1% of all diets have been excluded, including riverine benthics (B1/4/5 in Table 2), marsh crustaceans (B2), and delta polychaetes (B6). Colors correspond to source groupings in Fig 3 (except for those sources that were excluded).