Origins and characteristics of dissolved organic matter fueling harmful dinoflagellate blooms revealed by δ¹³C and D/L-Amino acid compositions.

ABSTRACT: We measured the concentrations of dissolved inorganic and organic nutrients, dissolved organic carbon (DOC), total hydrolyzable amino acids (THAA), fluorescent dissolved organic matter (FDOM), phytoplankton pigments, and δ¹³C-DOC during the summer of 2019 in the harmful dinoflagellate bloom regions of the southern coast of Korea. In the harmful dinoflagellate bloom region, the concentrations of inorganic nitrogen were depleted, inhibiting the growth of diatoms, while the concentrations of dissolved organic components (nutrients, DOC, FDOM, and amino acids) which fuel dinoflagellates were unusually high. Thus, we attempted to investigate the origins and characteristics of DOM which fuels the harmful dinoflagellate blooms. The δ¹³C-DOC values (- 22.2‰ to - 18.2‰) indica

SUBMITTER: Park J 

PROVIDER: S-EPMC9445177 | biostudies-literature | 2022 Sep

REPOSITORIES: biostudies-literature