000			02816nam a22002417a 4500
003			ft8645
005			20251013144139.0
008			251013b ||||| |||| 00| 0 eng d
041			_aengtag
050			_aQD 31.2 D33 2025
082			_a.
100	1		_aPadilla, Ryan Christian S.; Pili, Joseph Manuel D.; Raymundo, Vernadette Liz P.
245			_aDetermination and correlation of turbidity and dissolved oxygen contents in aquaculture ponds in Naic, Cavite
264		1	_aManila: _bPLM, _cc2025
300			_bUndergraduate Thesis: (Bachelor of Science in Chemistry) - Pamantasan ng Lungsod ng Maynila, 2025
336			_2text _atext _btext
337			_2unmediated _aunmediated _bunmediated
338			_2volume _avolume _bvolume
505			_aABSTRACT: Monitoring dissolved oxygen and turbidity-alongside other parameters of the Bureau of Fisheries and Aquatic Resources (BFAR) such as suspended solids, pH, ammonia, nitrate/nitrite, phosphate, total hardness, salinity, carbon dioxide, and Biochemical Oxygen Demand (BOD)-is essential for maintaining optimal water quality in aquaculture ponds. This study aimed to assess the correlation between dissolved oxygen and turbidity in three selected ponds in Naic, Cavite. Dissolved oxygen was measured using the Winkler method and Hanna HI98193 portable dissolved oxygen meter. Turbidity was analyzed using the Merck-SQ method at the Department of Science and Technology-Laguna. A paired sample t-test and percent differences compared the Winkler and DO meter readings, while Pearson correlation and linear regression analyzed the relationship between dissolved oxygen and turbidity. The t-values of the ponds were below the critical value (2.92), indicating no significant difference between the Winkler method and the DO meter. This was further supported by a low percent difference of below 5% for the dissolved oxygen readings between Winkler method and DO meter for the pond sampling sites. Turbidity levels varied among the ponds: Ronquillo Residences (9-20 NTU), Deloso Agri-Farm (37-40) NTU), and CVSU-Mabolo Annex (16-20 NTU). For Pearson correlation and linear regression, Ronquillo Residences showed a low negative correlation with low linearity, while Deloso Agri-Farm had a moderate negative correlation with low linearity. As such, this is caused by environmental and biological factors such as temperature, organic load, photosynthesis, or aeration patterns. In contrast, CVSU-Mabolo Annex exhibited a strong positive correlation with moderate linearity due to aeration, colder water, sediment resuspension, and human disturbance, which led to the increase on both variables unlike the other ponds. These findings confirm the comparability of the Winkler method and the DO meter.
526			_aF
655			_aacademic writing
942			_2lcc _cMS
999			_c36938 _d36938