Ocean acidification modifies biomolecule composition in organic matter through complex interactions.

ABSTRACT: The main source of marine organic carbon (OC) is autotrophic production, while heterotrophic degradation is its main sink. Increased anthropogenic CO₂ release leads to ocean acidification and is expected to alter phytoplankton community composition, primary production rates and bacterial degradation processes in the coming decades with potential consequences for dissolved and particulate OC concentration and composition. Here we investigate effects of increased pCO₂ on dissolved and particulate amino acids (AA) and carbohydrates (CHO), in arctic and sub-arctic planktonic communities in two large-scale mesocosm experiments. Dissolved AA concentrations responded to pCO₂/pH changes during early bloom phases but did not show many changes after nutrient addition

SUBMITTER: Grosse J 

PROVIDER: S-EPMC7692504 | biostudies-literature | 2020 Nov

REPOSITORIES: biostudies-literature