Journal
MARINE POLLUTION BULLETIN
Volume 173, Issue -, Pages -Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.marpolbul.2021.112950
Keywords
Ballast water; Biological invasion; Shipping; Ballast water management
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China, as a global factory and trade power, faces significant invasion risks in its ports due to the discharge of ballast water from ocean-going ships, especially in the Yangtze River Delta, Pearl River Delta, and Southern Taiwan Province. The disinfection of ballast water can effectively decrease the level of invasion risk.
The discharge of ballast water from ocean-going ships is a major pathway by which invasive species are introduced into coastal waters. As a global factory and trade power with extensive shipping networks, China has paid a huge ecological price for its progress. However, current endeavors to protect the nation's biodiversity are largely focused on terrestrial ecosystems. Therefore, for the first time, we conducted a comprehensive risk assessment of ballast water-induced biological invasion in Chinese ports. The results showed that the ports in the Yangtze River Delta, Pearl River Delta, and Southern Taiwan Province face significantly high invasion risks, and the number of donor ports, connected ships, and arriving vessels showed a positive correlation with the invasion risk. Further, we observed that even a low efficacy disinfection of ballast water can still significantly decrease the level of invasion risk.
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