Fig. 4
From: Crystallographic and geochemical responses of giant clams on turbid reefs
Geochemical profiles of element-to-calcium ratios for high turbid and low turbid giant clam shells. (a–d) Sub-daily resolved EPMA maps for the inner shell layer of low turbid (Triangle) and high turbid (Baik) giant clams within a region of shell growth corresponding to the wet season. White dashed diagonal line in (a) denotes transect measurement locations of maps for corresponding profiles for Sr/Ca and Mg/Ca shown in (e–h). (e) Sr/Ca and Mg/Ca profiles for a portion of growth in the low turbid shell collected in 2019 corresponding to the wet season. (f) Portion of growth in the high turbid shell collected in 2019 corresponding to the wet season. (g) Portion of growth in the low turbid shell corresponding to the dry season. (h) Portion of growth of the high turbid shell corresponding to the dry season. Color bars below profiles show concentrations of element-to-calcium ratios in mmol/mol corresponding to maps in (a–d). Grey lines on profiles show raw EPMA data. Red dashed (Sr/Ca) and solid blue lines (Mg/Ca) give a 3-point rolling mean.
