Chinese Journal of Oceanology and Limnology

, Volume 30, Issue 4, pp 519–527

Large scale northward expansion of warm water species Skeletonema tropicum (Bacillariophyceae) in China seas

Authors

    • Key Laboratory of Coastal Environmental Processes, Yantai Institute of Coastal Zone ResearchChinese Academy of Sciences
  • Jinjie Jiang蒋金杰
    • Key Laboratory of Coastal Environmental Processes, Yantai Institute of Coastal Zone ResearchChinese Academy of Sciences
    • South China Sea Institute of OceanologyChinese Academy of Sciences
    • Graduate University of Chinese Academy of Sciences
  • Yan Wang王妍
    • Key Laboratory of Coastal Environmental Processes, Yantai Institute of Coastal Zone ResearchChinese Academy of Sciences
    • South China Sea Institute of OceanologyChinese Academy of Sciences
    • Graduate University of Chinese Academy of Sciences
  • Yong Zhang张永
    • Key Laboratory of Coastal Environmental Processes, Yantai Institute of Coastal Zone ResearchChinese Academy of Sciences
  • Baoping Di邸宝平
    • Key Laboratory of Coastal Environmental Processes, Yantai Institute of Coastal Zone ResearchChinese Academy of Sciences
Biology

DOI: 10.1007/s00343-012-1249-x

Cite this article as:
Liu, D., Jiang, J., Wang, Y. et al. Chin. J. Ocean. Limnol. (2012) 30: 519. doi:10.1007/s00343-012-1249-x
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Abstract

S keletonema tropicum is regarded as a species with an affinity to warm waters and it has never been reported in seas where temperatures drop below 11°C in winter. Previous studies in China reported that S. tropicum was restricted to subtropical and warm temperate seas (East and South China Seas), but the species was recently found during August cruises of 2009 and 2010 in Jiaozhou Bay, Yellow Sea, located several hundred kilometers to the north. Here, winter water temperatures often drop below 5°C. Identification of S. tropicum was confirmed under light and scanning electronic microscopes and maximum cell abundance in Jiaozhou Bay was estimated as 1.73×104 cell/L. This record of S. tropicum in Jiaozhou Bay represents a significant northward expansion in the geographic range of the species. Ship ballast water was identified as a possible carrier of S. tropicum from southern places along Chinese coastline, and in addition, thermal pollution from local power stations and seawater desalination plants may provide suitable conditions for species over-wintering.

Keyword

biogeographyballast waterthermal pollutionSkeletonema tropicumYellow Sea
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© Chinese Society for Oceanology and Limnology, Science Press and Springer-Verlag Berlin Heidelberg 2012