EPD holds International Conference and Workshop on Phytoplankton Community Integrity Index (with photos)
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The EPD, drawing on the latest international practices, has successfully developed a biological indicator, the PCII, to address and manage nutrient enrichment in coastal and estuarine waters. The developments and applications of the PCII and the associated study findings were reviewed by academic scholars and published in an international scientific journal in February 2024.
Speaking at the opening ceremony, the Director of Environmental Protection, Dr Samuel Chui, highlighted that the Conference aims to create a platform for sharing and promoting the latest developments and applications of the PCII and other relevant biological indicators, so as to provide useful reference for the future development of ecologically based assessment methods on evaluating eutrophication risks and assessing ecological impacts, and to further enhance co-operation between the Hong Kong Special Administrative Region Government and the Chinese Mainland in marine ecological environment protection, in order to achieve the target of jointly building the Greater Bay Area into a world-class beautiful bay area.
Two phytoplankton experts from the Scottish Association for Marine Science in the United Kingdom were invited to present on the theory and operation mechanism of the PCII, as well as the relevant biological indices and evaluation approaches recently developed and applied internationally (e.g. in the European Union). Chinese Mainland representatives in attendance came from the National Marine Environmental Monitoring Center of the Ministry of Ecology and Environment, the World Sustainable Development Institute, the Department of Ecology and Environment of Guangdong Province, and the Ecology Environment Bureau of Shenzhen Municipality. Participants from Hong Kong included representatives from government officials and academic sectors such as the EPD, the Agricultural Fisheries and Conservation Department, the HKUST, the City University of Hong Kong, and the Hong Kong Metropolitan University.
The PCII provides an objective and scientific assessment on coastal eutrophication as it analyses the impact of nutrient levels on phytoplankton communities in marine ecosystems. The PCII can be used to supplement traditional nutrient water quality standards with key indicators of ecological or biological responses, thus improving the assessment of eutrophication risks in coastal and estuarine waters and better promoting pollution control in a precise and scientific manner. This enhances the cost-effectiveness of managing eutrophication. The EPD has already adopted the PCII to assess the eutrophication status of marine waters. For more information on the PCII and relevant monitoring data, please refer to the EPD's dedicated website (www.epd.gov.hk/epd/english/environmentinhk/water/hkwqrc/waterquality/phy_mon.html) and the annual report on Marine Water Quality Report in Hong Kong in 2024 (www.epd.gov.hk/epd/sites/default/files/epd/english/environmentinhk/water/hkwqrc/files/waterquality/annual-report/marinereport2024.pdf).
Ends/Tuesday, November 4, 2025
Issued at HKT 12:35
Issued at HKT 12:35
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