Data for contribution of marine phytoplankton and bacteria to ocean alkalinity

• Main Authors: Lee, Kitack, Lee, Chang-Ho
• Format: Other/Unknown Material
• Language: unknown
• Published: Zenodo 2021
• Subjects: Arctic Ocean; Bering Sea; Chukchi; Chukchi Sea; Phytoplankton
• Online Access: https://doi.org/10.5061/dryad.fbg79cnvp

The contributions of phytoplankton and bacteria cells to alkalinity (A T ) were measured in seawater samples obtained from 205 locations including the East Sea, the North Pacific Ocean, the Bering Sea, the Chukchi Sea, and the Arctic Ocean. We attributed the differences in A T values measured for unfiltered versus filtered samples to A T components contributed by phytoplankton (retained on a 0.7 µm filter) and by phytoplankton and bacteria combined (A T -BIO retained on a 0.45 µm filter). The A T -BIO values reached 10-19 μmol kg -1 in the East Sea and the North Pacific Ocean, and progressively decreased to a level of 1 μmol kg -1 with distance towards the Arctic Ocean. The study shows that the A T -BIO values are non-negligible in coastal and open ocean environments and need to be considered when assessing the accuracy of carbon parameters calculated using the thermodynamic models that use measured A T as an input parameter. Funding provided by: Ministry of Science and ICT, South Korea Crossref Funder Registry ID: http://dx.doi.org/10.13039/501100014188 Award Number: NRF-2021R1A2C3008748 Funding provided by: National Institute of Fisheries Science Crossref Funder Registry ID: http://dx.doi.org/10.13039/501100008787 Award Number: R2021051