Tracing the sources of nutrients fueling dinoflagellate red tides occurring along the coast of Korea using radium isotopes.

ABSTRACT: It is a well held concept that the magnitude of red-tide occurrence is dependent on the amount of nutrient supply if the conditions are same for temperature, salinity, light, interspecific competition, etc. However, nutrient sources fueling dinoflagellate red-tides are difficult to identify since red tides usually occur under very low inorganic-nutrient conditions. In this study, we used short-lived Ra isotopes (²²³Ra and ²²⁴Ra) to trace the nutrient sources fueling initiation and spread of Cochlodinium polykrikoides blooms along the coast of Korea during the summers of 2014, 2016, and 2017. Horizontal and vertical distributions of nutrient concentrations correlated well with ²²⁴Ra activities in nutrient-source waters. The offshore red-tide areas showed hig

SUBMITTER: Kwon HK 

PROVIDER: S-EPMC6814798 | biostudies-literature | 2019 Oct

REPOSITORIES: biostudies-literature