Relationship between the Bloom of Gymnodinium mikimotoi and Water Quality or Meteorological Factors in Osaka Bay and Harima-nada
| Autor: | Yasuhiko Sakai, Koji Tsujino, Kazuya Kodama, Satoshi Nagai, Masaki Nakajima, Keigo Yamamoto, Kazutaka Miyahara, Yoichi Yoshida, Tetsuya Nishikawa, Yutaka Hori |
|---|---|
| Rok vydání: | 1998 |
| Předmět: | |
| Zdroj: | NIPPON SUISAN GAKKAISHI. 64:1006-1012 |
| ISSN: | 1349-998X 0021-5392 |
| DOI: | 10.2331/suisan.64.1006 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|