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Characteristics of the marine environment and algal blooms in Gamak Bay
Authors:Moonock Lee  Byeongkuk Kim  Yeongah Kwon  Jongkyu Kim
Institution:(1) Faculty of Marine Technology, Chonnam National University, Yeosu, Jeollanam-do, 550-749, Republic of Korea;(2) Department of Ocean Engineering, Chonnam National University, Yeosu, Jeollanam-do, 550-749, Republic of Korea
Abstract:This study was conducted to gain insight into the characteristics of algal blooms in relation to the marine environment of Gamak Bay. From the first known occurrence of algal blooms in 1984 until 2006, 23 causal species have been identified, the most common ones being Prorocentrum sp., Cochlodinium polykrikoides, Chaetoceros sp., Skeletonema costatum, and Heterosigma akashiwo. A principal component analysis indicated that blooms of these species develop under different conditions in terms of water temperature, salinity, precipitation, and insolation. Field data showed Cochlodinium polykrikoides to be favored by high temperatures and to be euryhaline, whereas Skeletonema costatum appeared to be eurythermal and euryhaline. Prorocentrum sp. and Chaetoceros sp. appeared to be stenothermal and stenohaline. Finally, Heterosigma akashiwo appeared at the lowest temperature and highest salinity of the five species and was classified here as stenothermal and stenohaline.
Keywords:Algal blooms            Chaetoceros sp              Cochlodinium polykrikoides                      Heterosigma akashiwo            PCA            Prorocentrum sp              Skeletonema costatum            Succession of species
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