Comparative assessment of water quality parameters of mariculture for fish production in Hong Kong Waters

H. M. Leung, S. K.S. Leung, C. K. Au, K. C. Cheung, Y. K. Wong, Anna Oi Wah LEUNG, Kin Lam YUNG*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)

Abstract

The objective of the study is to evaluate the effect of fish cultivation on water quality in fish culture zone (FCZ) and analysed by Principle Component Analysis (PCA). 120 surface water samples were collected from Hong Kong Waters (60 samples in Victoria Harbour and another 60 in Ma Wan FCZ). Significant difference was found in dissolved oxygen (MW: 59.6%; VH: 81.3%), and Escherichia coli (MW: 465. CFU/100. ml; VH: 162.5. CFU/100. ml). Three principle components are responsible for water quality variations in the studying sites. The first component included E. coli (0.625) and dissolved oxygen (0.701). The second included E. coli (0.387) and ammonical-nitrogen (0.571). The third included E. coli (0.194) and ammonical-nitrogen (0.287). This framework provides information to assess the relative contribution of eco-aquaculture to nutrient loads and the subsequent risk of eutrophication. To conclude, a rigorous monitoring of water quality is necessary to assess point and nonpoint source pollution. Besides, appropriate remediation techniques should be used to combat water pollution and achieve sustainability.

Original languageEnglish
Pages (from-to)318-322
Number of pages5
JournalMarine Pollution Bulletin
Volume94
Issue number1-2
DOIs
Publication statusPublished - 15 May 2015

Scopus Subject Areas

  • Oceanography
  • Aquatic Science
  • Pollution

User-Defined Keywords

  • E. coli
  • Fish culture zone
  • Ma wan
  • Mariculture
  • Pearl river delta
  • Principle component analysis

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