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Effects of wind wave on distribution pattern of Sargassum horneri around Gouqi Island.

BI Yuan-xin, WANG Wei-ding*   

  1. (Marine Fisheries Research Institute of Zhejiang Province, Key Laboratory of Sustainable Utilization of Technology Research for Fishery Resource of Zhejiang Pro
    vince Zhoushan 316021, Zhejiang, China).
  • Online:2016-06-10 Published:2016-06-10

Abstract: The distribution of Sargassum horneri around Gouqi Island was investigated by diving in May 2015. Typhoon data over the last 65 years in the northwestern Pacific and wind data over the last 3 years around Gouqi Island were collected, and the effect of wind wave on the distribution of S. horneri was analyzed. The results showed that S. horneri was abundant in northwestern coast, especially at 1 to 4 m water depth, while no S. horneri was observed in eastern and southern coasts, presumably due to wind wave caused by 85.1% typhoon. Recently the abundance of S. horneri around Gouqi Island decreased, but there was no evidence to deduce this change resulting from the increased typhoon frequency. North and northwest winds were strong and occurred more often around Gouqi Island, yet S. horneri gathered in the northwestern coast, probably because of the large amount of mussel culture rafts which might relieve the negative impact of wind wave and protect S. horneri. In conclusion, wind wave had an important effect on the distribution of S. horneri around Gouqi Island.

Key words: Ilex cornuta, endophytic bacteria,  , inhibitory effect, metabolic substance.