Influence of Water Temperature and Salinity on PH During Dry Season in Lower Dong Nai River System, Vietnam

Dung, Dang Quoc; Duc, Pham Anh

doi:10.1515/gse-2015-0028

Cited by 3 publications

(3 citation statements)

References 14 publications

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“…With the increase in conductivity, salinity increases, which decreases the DO in the river and aids in the increment of the BOD level. An inverse correlation was observed during 2016 between temperature and pH, which means that with a temperature increase, the pH will decrease because with an increase in temperature a dissociation of water molecules occurs, resulting in the formation of more hydrogen ions leading to a decrease in pH value [29,30]. DO and faecal coliform also showed a negative correlation, which can be attributed to increased consumption in DO for degradation of faecal coliform by microorganisms [31,32].…”

Section: Discussionmentioning

confidence: 99%

Assessment of Spatial and Temporal Variation in Water Quality for the Godavari River

Navasakthi,

Pandey,

Dandautiya

et al. 2023

Water

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With increasing population and industrialization, the water quality of freshwater sources like rivers, lakes, and ponds is becoming increasingly degraded. Most of the rivers in India are becoming polluted, including the Godavari. With the construction of dams, new industries and unsustainable agricultural practices in the Godavari basin, the water characteristics are degrading spatially and temporally. The present study emphasizes the analysis of water quality parameters like temperature, pH, Dissolved Oxygen (DO), conductivity, Biological Oxygen Demand (BOD), nitrate, and faecal coliform concentration in the Godavari basin. This was achieved by analysis of data taken from the Central Pollution Control Board, India (CPCB) for 21 stations around the Godavari basin over a span of five years from 2015 to 2019. The Pearson Correlation coefficient for the water quality parameters was assessed to study the relationship among the parameters. Variation in the water quality parameter is observed from the graphs for each station for respective years. It was found that conductivity and DO, temperature and pH and DO and faecal coliform are negatively correlated. It was also observed that DO has a negative correlation with pH, BOD and faecal coliform, indicating the utilization of dissolved oxygen at higher rates due to increasing degradation of organic matter by aerobic microorganisms in the river. One-way ANOVA was applied to find out significant temporal variations and it was observed that temperature, pH, and faecal coliform level had significantly changed the overdue course of time (F(4, 115) = 2.451, p < 0.05). The obtained results from the analysis indicate that the selected water quality parameters have varied significantly spatially, whereas temporally, according to the ANOVA coefficient, only temperature, pH and faecal coliform had shown significant differences during the selected timeframe. Hence, the present study highlighted the deteriorating water quality of the Godavari River over time.

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Section: Discussionmentioning

confidence: 99%

Assessment of Spatial and Temporal Variation in Water Quality for the Godavari River

Navasakthi,

Pandey,

Dandautiya

et al. 2023

Water

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“…While the highest pH value is at Station_16 Argoguruh Dam, Way Sekampung River. From the research reported by Dung and Duc (2015) found that the pH value had a highly significant correlation with the temperature and salinity values [17].…”

Section: Phmentioning

confidence: 91%

Water Quality Data Analysis from the Onlimo Monitoring System at 16 Stations in Priority Watersheds and Lakes

Yudo,

Wahyono,

Alhasa

et al. 2023

IOP Conf. Ser.: Earth Environ. Sci.

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Currently, the decline in the quality of river and lake water continues, for this reason, activities to control pollution and improve river and lake water quality are required. One effort to prevent this problem is to implement online water quality monitoring technology continuously and in real time. The information generated from the water quality monitoring system can be used as a basis for planning watershed management and determining river and lake water management policies at the national and regional levels. The purpose of this activity is to analyze river and lake water quality data and evaluate the performance of the monitoring systems in 16 water quality monitoring stations that have been built. The data being analyzed is from 2016 to 2020 and includes the parameters of temperature, conductivity, TDS, DO, pH, and turbidity. The 16 station locations are spread over the Ciliwung River, Cisadane River, Citarum River, Serayu River, Bengawan Solo River, and Lake Toba. This research method uses descriptive statistical analysis and the STORET method, which refers to the Decree of the Minister of Environment and Forestry Number 115 of 2003 and Government Regulation of the Republic of Indonesia Number 82 of 2001. The results of this study indicate that most of the rivers monitored fall into the moderate to heavily polluted category, especially the rivers downstream of the Ciliwung, Cisadane, and Bengawan Solo rivers. The results of the analysis of DO, TDS, conductivity, and turbidity parameters from 16 monitoring stations, mostly met the Class II quality standards.

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“…We used artificial sea water, prepared by mixing Instant Ocean® with distilled water to prevent any additional input of organic matter that could have potentially been added by using in situ sea water (Lewis et al, 2014). The salinity of the artificial seawater was 30 ppt, which is within the range of the salinity in our field site (Dung & Duc, 2016) and in mangrove tidal water more generally (Chen et al, 2014;Frusher, Giddins, & Smith, 1994;Lara & Cohen, 2006;Marchand, Baltzer, Lallier-Vergès, & Albéric, 2004). The bases of the mesocosms in the 0 hr treatment (<5 mm) were wetted daily for 2 hr to prevent any gas loss during flux measurement (see below).…”

Section: Experimental Design and Setupmentioning

confidence: 99%

Sensitivity of mangrove soil organic matter decay to warming and sea level change

Arnaud

Baird

Morris

et al. 2020

Global Change Biology

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Mangroves are among the world's most carbon‐dense ecosystems, but they are threatened by rapid climate change and rising sea levels. The accumulation and decomposition of soil organic matter (SOM) are closely tied to mangroves' carbon sink functions and resistance to rising sea levels. However, few studies have investigated the response of mangrove SOM dynamics to likely future environmental conditions. We quantified how mangrove SOM decay is affected by predicted global warming (+4°C), sea level changes (simulated by altering of the inundation duration to 0, 2, and 6 hr/day), and their interaction. Whilst changes in inundation duration between 2 and 6 hr/day did not affect SOM decay, the treatment without inundation led to a 60% increase. A warming of 4°C caused SOM decay to increase by 21%, but longer inundation moderated this temperature‐driven increase. Our results indicate that (a) sea level rise is unlikely to decrease the SOM decay rate, suggesting that previous mangrove elevation gain, which has allowed mangroves to persist in areas of sea level rise, might result from changes in root production and/or mineral sedimentation; (b) sea level fall events, predicted to double in frequency and area, will cause periods of intensified SOM decay; (c) changing tidal regimes in mangroves due to sea level rise might attenuate increases in SOM decay caused by global warming. Our results have important implications for forecasting mangrove carbon dynamics and the persistence of mangroves and other coastal wetlands under future scenarios of climate change.

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Influence of Water Temperature and Salinity on PH During Dry Season in Lower Dong Nai River System, Vietnam

Cited by 3 publications

References 14 publications

Assessment of Spatial and Temporal Variation in Water Quality for the Godavari River

Assessment of Spatial and Temporal Variation in Water Quality for the Godavari River

Water Quality Data Analysis from the Onlimo Monitoring System at 16 Stations in Priority Watersheds and Lakes

Sensitivity of mangrove soil organic matter decay to warming and sea level change

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