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Tintinnid species as biological indicators for monitoring intrusion of the warm oceanic waters into Korean coastal waters |
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| Authors: | Young-Ok Kim Kyoungsoon Shin Pung-Guk Jang Hyun-Woo Choi Jae-Hoon Noh Eun-Jin Yang Eung Kim Dongchull Jeon |
| Institution: | 1. South Sea Research Institute, KIOST, Geoje, 656-830, Korea 2. Oceanogaphic Data & Information Center, KIOST Ansan, P.O.Box 29, Seoul, 425-600, Korea 3. Marine Ecosystem Research Division, KIOST Ansan, P.O.Box 29, Seoul, 425-600, Korea 4. Korea Polar Research Institute, KIOST, Incheon, 406-840, Korea 5. Ocean Circulation & Climate Research Division, KIOST, Ansan, P.O.Box 29, Seoul, 425-600, Korea |
| Abstract: | This study examined seasonal and annual occurrences of warm oceanic tintinnid species in southern Korea coastal waters. The indicative species of tintinnids was monitored using three approaches: monitoring from cruises traveling from the warm pool in the western North Pacific to the Korea Strait; biweekly or monthly monitoring in the Korea Strait; and daily monitoring in the nearshore water. Annual pulses of warm oceanic indicator species were regularly observed in the Korea Strait. In September 2008 recorded a maximum species number of warm water indicators, a representative species for warm oceanic waters, Climacocylis scalaroides was simultaneously detected in the nearshore water as well as the Korea Strait. The result indicates that the greater warm water extension into Korean coastal areas was in September 2008. Sharp declines in species diversity were observed in the transitional area between neritic and Kuroshio zone in East China Sea (ECS). Epiplocyloides reticulata, reported previously as a Kuroshio indicator, was considered an ECS indicator species, as it was undetected in the western North Pacific central zone but was found abundantly in the ECS. Tintinnid species can be used as biological indicators to detect the inflow of warm oceanic waters into Korean coastal waters. |
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