Crossplots of isotope values measured in shell organic matter vs shell carbonate.

Error bars are 2 standard deviation instrumental precision. A) δ 13 C org vs δ 13 C shell , B) δ 15 N vs δ 13 C shell , C) δ 13 C org vs δ 18 O shell , D) δ 15 N vs δ 18 O shell , E) δ 13 C org vs δ 44/40 Ca, and F) δ 15 N vs δ 44/40 Ca.

Bibliographic Details
Main Authors:	Benjamin J. Linzmeier (2622280), Andrew D. Jacobson (3321963), Bradley B. Sageman (8874536), Matthew T. Hurtgen (8869463), Meagan E. Ankney (14307606), Andrew L. Masterson (7106753), Neil H. Landman (6875177)
Format:	Still Image
Language:	unknown
Published:	2022
Subjects:	Genetics Molecular Biology Biotechnology Evolutionary Biology Ecology Developmental Biology Cancer Inorganic Chemistry Science Policy Infectious Diseases Plant Biology Environmental Sciences not elsewhere classified Chemical Sciences not elsewhere classified molluscan biomineralization processes last 130 years decreasing oxygen concentration scale paleoecological reconstructions oxygen isotope equilibrium div >< p 40 </ sup 18 </ sup 15 </ sup 13 </ sup nautilus macromphalus </ others given variability increasing atmospheric co affect geochemical change shell using δ p </ nautilus </ scale change spirula </ sepia </ isotope systematics geochemical response shock response shell chemistry sampling strategy questions remain ocean acidification new caledonia model organisms less well individuals inhabited eutrophication offshore environmental changes easily preserved data suggest data hinges complex ecology Nautilus Ocean acidification
Online Access:	https://doi.org/10.1371/journal.pone.0277666.g008

Description
Summary:	Error bars are 2 standard deviation instrumental precision. A) δ 13 C org vs δ 13 C shell , B) δ 15 N vs δ 13 C shell , C) δ 13 C org vs δ 18 O shell , D) δ 15 N vs δ 18 O shell , E) δ 13 C org vs δ 44/40 Ca, and F) δ 15 N vs δ 44/40 Ca.