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BIO-01  Harmful Algal Blooms
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Mapping of Four Main Harmful Algal Species in the East China Sea (Yangtze River estuary) and Their Possible Respondence to Main Ecological Status via a Global Vision
Jiarong Hu* , Second Institute of Oceanography, Ministry of Natural
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Pengbin Wang* , Second Institute of Oceanography, Ministry of Natural
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Ruoyu Guo, Second Institute of Oceanography, Ministry of Natural
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Douding Lu, Second Institute of Oceanography, Ministry of Natural
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Xinfeng Dai, Second Institute of Oceanography, Ministry of Natural
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Bum Soo Park, Korea Institute of Ocean Science & Technology |
Yangtze River estuary (YRE) is the most notable sea area for harmful algal blooms (HABs) in China. Karenia mikimotoi, Margalefidinium polykrikoides, Prorocentrum donghaiense and Heterosigma akashiwo are the main harmful algal species in East Asian Sea. The four harmful algal species were detected and quantified via qPCR in this study. Estimated maximum cell abundance of K. mikimotoi, M. polykrikoides (East Asian Ribotype, EAR), P. donghaiense and H. akashiwo were 1.6 × 105, 1.3 × 105, 1.6 × 105 and 1.2 × 107 cells·L−1, respectively. HABs dominated by H. akashiwo and P. donghaiense occurred at station S27 on July 22, 2020. Turbidity, pH and salinity may be the main factors affecting the blooms of K. mikimotoi, M. polykrikoides (EAR) and P. donghaiense, while temperature may be the main factor affecting the blooms of H akashiwo in the studied sea area. The results reveal a distributive pattern of the four harmful algal species in the YRE under the different ecological status. It provides a practical case for the future construction of monitoring and warning systems for the four harmful algal species and HABs. |
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