Assessment of Water Quality for Aquaculture in Hau River, Mekong Delta, Vietnam Using Multivariate Statistical Analysis

Mutea, Fridah Gacheri; Nelson, Howard Kasigwa; Au, Hoa Van; Huỳnh, Trường Giang; Vu, Ut Ngoc

doi:10.3390/w13223307

Cited by 19 publications

(29 citation statements)

References 45 publications

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“…The importance of the parameter's weight is related to water use and source [85][86][87][88][89]. In the case of WQI applicable to surface waters, it would seem that the greatest weight should be given to the parameters DO, BOD 5 , nitrates, suspended solids and total coliforms [5,12,17,25,43,64,68,88].…”

Section: Delphi Methods Applicationmentioning

confidence: 99%

“…Water quality is assessed by physical parameters such as turbidity, conductivity, and resistivity; chemical parameters such as pH, hardness, alkalinity, acidity, total solids, chlorides, nitrates, phosphates, fluorides, magnesium, iron, manganese, toxic metals, and dissolved gases; biological parameters such as biochemical oxygen demand (BOD), chemical oxygen demand (COD) and total organic carbon; and further microbiological parameters [25][26][27], which might be associated with the incidence of anthropic activity in a region [8,15,28,29].…”

Section: Introductionmentioning

confidence: 99%

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Proposal of a Water-Quality Index for High Andean Basins: Application to the Chumbao River, Andahuaylas, Peru

Choque-Quispe

Froehner

Palomino-Rincón

et al. 2022

Water

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The water from the high Andean rivers is peculiar due to its composition and the geomorphology of its sources, and naturally or anthropogenically contamination is not discarded along its course. This water is used for agriculture and human consumption, therefore knowing its quality is important. This research aimed to proposing and formulate a water-quality index for high Andean basins through the Delphi method, and its application in the Chumbao River located in Andahuaylas-Peru. Forty-three water-quality parameters were evaluated through the Delphi method, and the water-quality index (WQIHA) was formulated with a weighted average of the weights of the selected parameters, it was compared with the WQI Dinius. For this purpose, ten sampling points were considered along the Chumbao River located between 4274 and 2572 m of altitude and the WQIHA was applied. In addition, field and laboratory analyses were carried out in 2018, 2019, and 2021, in dry and rainy seasons. Twenty parameters were grouped in the physicochemical sub-index (SIPC), heavy metals sub-index (SIHM), and organic matter sub-index (SIOM). Each group contributed with weights of 0.30, 0.30, and 0.40, respectively, for the WQIHA formulation. The SIPC and SIOM showed that the areas near the head of the basin presented excellent and good quality, while the urbanized areas were qualified as marginal to poor; SIHM reported good quality in all points and seasons. Regarding the WQIHA, the index shows good quality in the zones above 3184 m of altitude, contrasting with poor quality downstream, decreasing notably in both seasons, suggesting continuous degradation of the water body.

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Section: Delphi Methods Applicationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Proposal of a Water-Quality Index for High Andean Basins: Application to the Chumbao River, Andahuaylas, Peru

Choque-Quispe

Froehner

Palomino-Rincón

et al. 2022

Water

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“…Agricultural practices, specifically rice and sugarcane cultivation in the TTNNMX, were responsible for the high phosphate Furthermore, the DO contents in the NRs were significantly lower than the standard 08:2015/BTNMT (column A1) used for aquatic animal conservation. It should be noted that the levels of organic pollution were found to be higher in the study area than those found in the intensive rice [2,3,[33][34][35], aquaculture [36,37], and fruit areas [34] in the VMD.…”

Section: Weighted Arithmetic Water Quality Indexmentioning

confidence: 97%

Assessing the Impacts of Dike Systems on Water Quality in Natural Reserves of the Vietnamese Mekong Delta

et al. 2022

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Protected places such as nature reserves (NRs) are used to maintain ecological balance, biodiversity, and support surrounding ecosystems. However, the development and operation of infrastructure such as dikes and sluice gates in NRs, as seen in the Vietnamese Mekong Delta (VMD), often adversely affects the hydrological regime and water quality at both local and regional scales. This study analyzes the consequences of a constructed dike system on the hydrological regime and water quality in the NRs through an integrated approach including hydrochemical analysis (using descriptive statistics and weighted arithmetic water quality index (WAWQI) analysis), traditional interviews (face to face), using semi-structured questionnaires, field surveys, and secondary data. Results show that constructed infrastructure has helped maintain water supplies for both livelihoods and forest fire prevention. However, considerable impacts on the hydrological regime and water quality have occurred. From water quality assessments in three NRs, 29% of sampling sites in the My Phuoc melaleuca forest (MPMF) had WAWQI values over 100, while all sites in Lung Ngoc Hoang NR (LNHNR) and Mua Xuan Agriculture Center (MXAC) had WAWQI values over 100. This was to a large extent due to elevated concentration of chemical oxygen demand (COD), biological oxygen demand (BOD5), and phosphate (PO43−). Meanwhile, during the wet season, pollution was marginally reduced by dilution, with 42.86% of sites at Lung Ngoc Hoang NR, 28.57% of sites at MXAC, and 78.57% of sites at MPMF having WAWQI values of less than 100. These results show the issue of water pollution at spatio-temporal scales, and call for better holistic management options for improving the hydrological regime and water quality.

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“…Concentration of TAN and Nitrite-N were the lowest at the water inflow point indicating nitrification (Brown et al, 2011). Nitrogen is rapidly lost through denitrification and ammonia volatilization (Boyd, 1985) and phosphorus is not absorbed by the pond mud so it was high in outlet.TSS was documented low in outlet due to low feed residue in system (Mutea et al, 2021).…”

Section: Water Quality Of Inlet and Outlets Of In-pond Raceway Aquacu...mentioning

confidence: 99%

Assessment of Aquatic Environmental Parameters of In-Pond Aquaculture System

Gharti¹,

Liping²

2023

Our Nature

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The In-pond raceway aquaculture (IPRA) was developed to increase production that is more controllable and efficient than pond culture system. This study was conducted on commercial scale in IPRA to characterize the water quality and microbial community study within IPRA farms. The IPRA covers an area of 2h of traditional pond with 10 raceways, each of 25m× 5m×2.5m of fish culture units. Where monitoring of water quality parameters and microbial abundancy had been studied between inlet and outlet of the raceways during 108 days of culture period. Average water quality parameters and total soluble solid (TSS) over the course of the study was not found to be significantly difference. Nitrite nitrogen, nitrate nitrogen, total ammonia nitrogen, total phosphorus, chlorophyll-a and chemical oxygen demand were higher in outlet than inlets of IPRA. However, average total nitrogen, soluble reactive phosphorus and total soluble solids concentrations were slightly higher in inlets of IPRA there was also insignificance difference of microbial abundance. Therefore, it can be concluded from this study that fishes in raceways consumed nearly all the feed offered and a negligible amount of feed was wasted. So, leftover feed settlement to the bottom of the pond became a concern of no issue, despite the raceway having intensive fish culture thus bringing non-significant differences in water quality parameters between the inlet and outlet of the IPRA system.

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Assessment of Water Quality for Aquaculture in Hau River, Mekong Delta, Vietnam Using Multivariate Statistical Analysis

Cited by 19 publications

References 45 publications

Proposal of a Water-Quality Index for High Andean Basins: Application to the Chumbao River, Andahuaylas, Peru

Proposal of a Water-Quality Index for High Andean Basins: Application to the Chumbao River, Andahuaylas, Peru

Assessing the Impacts of Dike Systems on Water Quality in Natural Reserves of the Vietnamese Mekong Delta

Assessment of Aquatic Environmental Parameters of In-Pond Aquaculture System

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