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cje ›› 2004, Vol. ›› Issue (1): 125-128.

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Introduced species via ship's ballast water and their effects on the environment and ecology of water area

SHEN Xinjun, BAI Xiyao, TANG Hong, WANG Ning   

  1. Environmental Engineering Research Institute, Dalian Maritime University, Dalian 116026, China
  • Received:2003-04-26 Revised:2003-06-14 Online:2004-02-10

Abstract: With the development of global shipping business, ships sail continually over the world. As an effective media, ship's ballast water spreads some species that live in one water area to the others. These species include many sorts and have strong adaptability and harmfulness. In this paper, case histories of some introduced species via ship's ballast water which widely dispersed in the world were given, their characteristics such as sort, source, way of introduction, habit, distribution and their negative effects to indigenous environment and ecology, human health, economy as well as some treatment measures adopted by indigene after their invasion were also introduced. Furthermore, it was indicated that controlling ballast water discharge and studying the effective method for treating ballast water were effective approach that can prohibit the spread of introduced species.

Key words: N deposition addition, South subtropics, Forests, Soil fauna

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