Lecture Notes (PDF) - Aqueous and Environmental Geochemistry

Biological Controls on DissolvedCarbonatei) CO 2 consumption by photosynthesis:CO 2 + 2H 2 O → “CH 2 O” + O 2ii)CO 2 release (“mineralization”) by respiration“CH 2 O” + O 2 → CO 2 + 2H 2 O(Note, the arrows indicate irreversible reactions!)iii) Biomineralization of CO-23Ca +2 + CO-23 = CaCO 3 (calcite)ForaminiferaCaCO 3 -Shelled ZooplanktonPteropods6