Figure 2.

Estimated TP_{G lu/phe} of rocky‐shore benthic foraminifera (a) and δ ¹⁵N values of glutamic acid (solid symbols) and phenylalanine (open symbols) (b). No shading (white area) indicates the samples collected in the daytime at the Omaezaki site for P. opercularis, P. nipponica, and C. lobatulus or at the Minami‐Izu site for P. opercularis; light gray indicates the samples that were collected in the daytime at the Yugawara site, and dark gray indicates the samples that were collected at night at the Yugawara site. Circles, bulk cell (including cell cytoplasm, organic membranes, intracrystalline proteins, endobionts, and food material); diamonds, and organic matter (including organic sheet and intracrystalline proteins in the test [shell]). Ecology of foraminifera including existence of endobionts and mode of life is indicated at the top of the panel, and locality and species name are indicated at the bottom of the panel