Sodium and manganese in barnacle shells, collected from habitats with salinities varying from 1–26‰, have been measured by neutron activation analysis. Sodium content varies from 1,600 to 5,000 ppm and is proportional to environmental salinity. Manganese values range from 80 to 3,800 ppm and are related to the concentration of manganese in the local water.
No takes yet. Share an insight, caveat, or question.
Gordon et al. (1970) studied this question.
Synapse has enriched 5 related papers. Consider them for comparative context: