Physical and chemical characteristics of the water quality associated with macrophytes community in Chenderoh Reservoir, Malaysia

• Published in: IOP conference series. Earth and environmental science 2024-12, Vol.1436 (1), p.012022
• Main Authors: Ismail, S N, Mansor, A, Ahmad, A, Mansor, M
• Format: Article
• Language: English
• Subjects: Ammonia; Aquatic plants; association; Bioaccumulation; Damsites; Dissolved oxygen; Eutrophication; Geographical distribution; Lentic environment; Macrophytes; Nitrates; Nitrogen; Nitrogen dioxide; Orthophosphate; Parameters; Reservoirs; Sampling; Seasonal distribution; Seasonal variations; Solid suspensions; Total suspended solids; Water analysis; Water depth; Water level fluctuations; Water levels; Water purification; Water quality; Water quality measurements; Water sampling
• ISSN: 1755-1307; 1755-1315
• DOI: 10.1088/1755-1315/1436/1/012022

A study was conducted From June 2015 to May 2016 on the spatial and temporal changes of physico-chemical parameters that were related to the distribution of the macrophytes community in Chenderoh Reservoir. Field sampling was carried out at eighteen sampling stations, spaced one kilometer apart, throughout the reservoir’s main river channel and embayments. The distribution of macrophyte species was surveyed using quadrat and line transect techniques. Several water quality measures were monitored in-situ at three distinct depths: the surface, Secchi depth, and the bottom. Water samples were also collected for additional examination. Total suspended solids (TSS), ammonia-nitrogen (NH3), orthophosphate (PO4), nitrite-nitrogen (NO2), nitrate-nitrogen (NO3), and chlorophyll a (Chl a) were all analyzed in the lab. The macrophyte population at Chenderoh Reservoir was shaped by a number of parameters, including temperature, dissolved oxygen, NH3, PO4, NO2, and NO3 (Secchi depth; SD), and Chl a. On the other hand, the sampling locations in the lotic ecosystem were found to be in an early mesotrophic condition, according to the current trophic state as determined by the concentration of Chl a (TSIChl), while the sample points in the lentic environment had a moderate to high mesotrophic status. This study showed that water quality characteristics, which are influenced by seasonality and fluctuations in water level caused by dam operation, predicted the distribution of macrophytes at all sampling locations in Chenderoh Reservoir. Macrophyte communities regulate the characteristics of water quality, which can serve as a natural filter and bioaccumulator while reducing the reservoir’s propensity for eutrophication. The diversity, distribution, and spatial and temporal scale dynamics of macrophytes in a shallow tropical reservoir are better understood as a result of this study.