Effendi, Alyaa Filza (2025) Assessing Physico-Chemical Characteristics In Relation To Water Quality And Trophic Status Indices In Puah Reservoir, Terengganu. Masters thesis, Perpustakaan Hamzah Sendut.
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Abstract
This study assesses the limnological and water quality characteristics of the puah reservoir at hulu terengganu hydropower station from february 2018 to february 2020. The study aimed to examine seasonal and spatial variations in water quality parameters, dissolved oxygen (do) profiles, and trophic status to support sustainable hydropower operation and aquatic ecosystem health. Sampling across seven sites within three longitudinal zones; riverine, transitional, and lacustrine, focused on fourteen key parameters, including dissolved oxygen (do), temperature, ph, conductivity, secchi depth, total suspended solids (tss), chemical oxygen demand (cod), biological oxygen demand (bod), ammoniacal nitrogen (an), nitrate (no₃⁻), nitrite (no₂⁻), total phosphorus (tp), total nitrogen (tn), and chlorophyll-a. Spatial assessments showed considerable variation across the reservoir's zones. The lacustrine zone exhibited greater water clarity (secchi depth of 2.5 m) and higher chlorophyll-a concentrations (4.2 μg/l) than the riverine zone, indicating a more eutrophic condition favorable to primary productivity. Conversely, the riverine zone recorded lower clarity and higher suspended solids (average tss of 20 mg/l) due to increased sedimentation. Temporal variations highlighted seasonal shifts, particularly between the wet and dry seasons.
| Item Type: | Thesis (Masters) |
|---|---|
| Subjects: | Q Science > QH Natural history > QH1-278.5 Natural history (General) |
| Divisions: | Pusat Pengajian Sains Kajihayat (School of Biological Sciences) > Thesis |
| Depositing User: | Mr Hasmizar Mansor |
| Date Deposited: | 20 May 2026 00:54 |
| Last Modified: | 20 May 2026 00:54 |
| URI: | http://eprints.usm.my/id/eprint/64243 |
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