| Title |
A comparative study of physicochemical and biological water quality parameters of Iligan Bay, Philippines |
|
Authors |
Darlyne Logarta Bugtong, Annielyn Deocampo Tampus* , Sharon Rose Malanum Tabugo, Angelo Ario Responte, Marilu Dandasan Dimalen |
|
Publication date |
2018 |
|
Journal |
International Journal of Biosciences |
| Volume |
Volume 12 |
| Issue |
No. 6 |
| Pages |
p. 19-36, 2018 |
| Publisher |
INNSPUB |
| Abstract |
Changes in the physico-chemical characteristics provide significant information on status and health of aquatic
ecosystem particularly marine life. This study was conducted to analyze the physico-chemical and biological
water quality parameters of the selected three coastal waters of Iligan Bay, Philippines which has been a major
fishing ground for its rich fishery resources. A total of 11 physico-chemical and 3 biological parameters were
observed. Principal component analysis showed four major PCs which accounted for 88.3% variance of the
original data structure. The first PC explained 38.191% of the total variance and was best represented by nitrate,
phosphate and conductivity. The second PC was dominated by Dissolved Oxygen (DO) and Total Dissolved
Solids (TDS), accounting for 26.062% of the total variance. The third PC explained 13.787% of the total variance
and loaded heavily on transparency and substrate type. The fourth PC accounted for 10.212% of the total
variance which is dominated by hetero plate count, total coliform and E. coli. Results showed that selected sites
in Iligan Bay generally, did not comply with the limits of quality set by the DENR especially for surface water
temperature and pH. Moreover, results for bacteriological analysis implied that the three sites examined
exhibited relatively poor water quality during the study period. In this respect, poor water quality is attributed to
anthropogenic activities in the area. |
| Index terms / Keywords |
Physico-chemical parameters, Biological parameters, Pearson correlation analysis, Principal component analysis. |
| DOI |
|
| URL |
|
Mindanao State
University - Iligan Institute of Technology