Abstract
Relatioship between the blooming of Gymnodinium mikimotoi and water quality or meteorological factors was examined in Osaka Bay and Harima-nada, referring to the Meteorological Agency's data.The comparison of the average of each water quality parameter with the dominant species among phytoplankton from June to August of 1995-1997 showed that G. mikimotoi dominantly occurred in the waters with high water temperature, salinity, TN:DIN (total nitrogen: dissolved inorganic nitrogen) and TP:DIP (total phosphorus: dissolved inorganic phosphorus) ratios, moderate TN×TP and DIN:DIP ratio, and low TN, TP, DIN, DIP, and DSi (dissolved silicate). The red tide of G. mikimotoi occurred from late July to mid August of 1995 with meteorological conditions of high precipitation, high air temperature, long sunshine duration, and weak wind velocity in July.These characteristics of water quality and meteorological factors suggested that the abnormal occurrence of G. mikimotoi was closely connected with the increase of dissolved organic matter by the sudden increase and following decomposition of phytoplankton and the capability of utilization of dissolved organic matters of G. mikimotoi.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
