http://dx.doi.org/10.1016/j.marpolbul.2015.01.028">
 

Document Type

Journal Article

Department/Unit

Department of Biology

Title

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

Language

English

Abstract

© 2015 Elsevier Ltd. 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.

Keywords

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

Publication Date

2015

Source Publication Title

Marine Pollution Bulletin

Volume

94

Issue

2-1

Start Page

318

End Page

322

Publisher

Elsevier

ISSN (print)

0025326X

ISSN (electronic)

18793363

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