Macromolecular composition of particulate organic matter in photic layer of the Amundsen Sea during the summer in 2016

Macromolecular compositions (carbohydrates, proteins, and lipids) of particulate organic matter (POM) are crucial as a basic marine food quality. To date, however, a little investigation has been carried out in the Amundsen Sea which is one of the fastest warming locations in the Southern Ocean. Water samples for macromolecular compositions were obtained at selected 19 stations in the Amundsen Sea Polynya (AP) and Amundsen Sea non-polynya (ANP) during the austral summer in 2016 to investigate vertical characteristics of POM. (1) to investigate the macromolecular compositions (proteins, lipids, and carbohydrates) of size-fractionated POM in the photic layer and (2) estimate physiological status and nutritional condition of phytoplankton as a major source of POM in the Amundsen Sea.