Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
6356866 | Marine Pollution Bulletin | 2015 | 5 Pages |
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: 465Â CFU/100Â ml; VH: 162.5Â CFU/100Â 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.
Related Topics
Physical Sciences and Engineering
Earth and Planetary Sciences
Oceanography
Authors
H.M. Leung, S.K.S. Leung, C.K. Au, K.C. Cheung, Y.K. Wong, A.O.W. Leung, K.K.L. Yung,