Photoautotrophy

Incubation | Discrete

• ¹⁴Carbon uptake - Net Primary Productivity (NPP) and Gross Primary Productivity (GPP)
• ¹⁸Oxygen-labelled water (GOP)
• Winkler light-dark dissolved O₂ bottle
• Phytoplankton carbon biomass (Cphyto) x growth rate (µ)
• ¹³Carbon uptake
• Continuous dissolved oxygen (DO) optodes

In situ | Continuous

• Gross Primary Production (GPP) - triple oxygen
• Net community production (NCP)- Nitrate drawdown
• Net community production (NCP) - O₂/Ar

Optics-based

• Single Turnover Chlorophyll Fluorescence
• Remote Sensing NPP
• BGC-Argo NPP

Omics-based

• RT-qPCR/ddPCR
• rcbL gene expression/quant
• psbA
• Rubisco protein
• PSII/PSI quantification