A high-resolution study of the early- to late-summer progression in primary production and carbon export potential in the Atlantic Southern Ocean.

• Main Authors: Amelia A. Deary, Raquel F. Flynn, Jessica M. Burger, Riesna R. Audh, Hermann Luyt, Shantelle Smith, Kurt A.M. Spence, Katye E. Altieri, Sarah E. Fawcett
• Other Authors: Dr Sarah Fawcett, Raquel Flynn
• Format: Doctoral or Postdoctoral Thesis
• Language: unknown
• Published: Zenodo 2022
• Subjects: Southern Ocean Biogeochemistry; Primary Production; Phytoplankton; New Production Paradigm; Carbon Export; Southern Ocean
• Online Access: https://doi.org/10.5281/zenodo.5865488

"A high-resolution study of the early- to late-summer progression in primary production and carbon export potential in the Atlantic Southern Ocean" is the Honours thesis of Amelia Deary, focusing on the switch from new- to regenerated production in the framework of the new production paradigm as defined by Dugdale and Goering (1967).As a consequence of the paucity of seasonally-resolved NPP and N uptake data for the Southern Ocean, many dynamics of biological C and N cycling are difficult to disentangle. Sampling at the beginning and end of a single growing season thus makes this study unique. Rates (bulk and size-fractionated) of net primary production (NPP) and N uptake (as NO 3 - and NH 4 + ) were measured across the Atlantic Southern Ocean in early- (December) and late-summer (March) of the same year to investigate the evolution and drivers of phytoplankton N uptake dynamics and C export potential over the growing season.