¹³C

Table 2. Elemental and isotopic compositions of Rhizophora mangle leaves and filter feeders.

Table 3. Barnacle nutritional sources from S isotope mixing model and calculated phytoplankton ¹³C values.

Figure 2. Graphs showing C concentrations and isotopic compositions of three color classes of mangrove leaves in the Shark River estuary.

Figure 3. Graphs showing N/C molar ratios and N isotopic compositions of three color classes of mangrove leaves in the Shark River estuary.

Figure 4. Graphs showing S/C molar ratios and S isotopic compositions of three color classes of mangrove leaves in the Shark River estuary.

Figure 5. Graph showing N/S molar ratios of three color classes of mangrove leaves in the Shark River estuary.

Figure 6. Graphs showing Isotopic compositions of filter-feeding barnacles, mussels, and mangrove leaves across the Shark River estuary.