Comparative assessment of water quality parameters of mariculture for fish production in Hong Kong Waters. Issue 1 (15th May 2015)

• Record Type: Journal Article
• Authors: Leung, H.M.; Leung, S.K.S.; Au, C.K.; Cheung, K.C.; Wong, Y.K.; Leung, A.O.W.; Yung, K.K.L.
• Is Part Of: Marine pollution bulletin. Volume 94:Issue 1/2(2015:May)
• Page Start: 318
• Page End: 322
• Publication Date: 2015-05-15
• Subjects: Fish culture zone -- Principle Component Analysis -- Pearl River Delta -- E. coli -- Mariculture -- Ma Wan; Marine pollution -- Periodicals; Marine Biology -- Periodicals; Water Pollution -- Periodicals; Mer -- Pollution -- Périodiques; Publications périodiques; Pollution des mers; Lutte antipollution; Electronic journals; 363.7394
• DOI: 10.1016/j.marpolbul.2015.01.028
• Languages: English
• ISSNs: 0025-326X

Abstract

Highlights: Evaluation of the effect of fish cultivation on water quality. Principal Component Systems are highly influenced by E . coli . Both parameters generally complied with an international standards. 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.