Development of Molecular Identification of Nitrifying Bacteria in Water Bodies of East Kolkata Wetland, West Bengal

Saha, Mousumi; Sarkar, Agniswar

doi:10.4172/2155-6199.1000211

Cited by 3 publications

(3 citation statements)

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“…Sewage fed fisheries and floodplain wetlands are important fishery resources in West Bengal. East Kolkata Wetland (EKW), designated as an 'International Ramsar Site' in November 2002by Ramsar Convention (1975 (Kumar 2018), and a unique agroecosystem located at the eastern outskirt of Kolkata and comprises a series of natural and manmade wetlands (Saha et al 2013;Singha Roy & Pal 2015;Pal et al 2016). Because of a widely known attribute of EKW in the recycling of waste water in the metropolitan city Kolkata, it has been named as the 'Kidney of the city' (Vicziany et al 2017).…”

Section: Introductionmentioning

confidence: 99%

“…The important physicochemical parameters of water such as temperature, pH, dissolved oxygen (DO), total dissolved solids (TDS), Biological oxygen demand (BOD), Chemical oxygen demand (COD), nitrate-nitrogen (NO 3 -N), ammonia-nitrogen (NH 3 -N) and phosphate-phosphorous (PO À3 4 ) need to be assessed properly in different seasons for fish-health management. EKW not only serves as a rich source of nutrients but also harbours efficient and commercially important bacteria, such as nitrifying bacteria and heavy metal utilizing bacteria and microbes, that act as bioremediators by assimilating nitrogen and producing extracellular enzymes (Ghosh et al 2007;Saha et al 2013Saha et al , 2014Sahaya Sukeetha et al 2019).…”

Section: Introductionmentioning

confidence: 99%

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Water quality assessment of East Kolkata Wetland with a special focus on bioremediation by nitrifying bacteria

Saha

Sarkar

Bandyopadhyay

2021

Water Science and Technology

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East Kolkata Wetlands (EKW) is designated as International Ramsar site and are the hotspot for large-scale wastewater aquaculture practices. However, the continued surveillance of physicochemical properties of water and application of an eco-friendly approach are essential to ensure safe aquaculture practices. In the present study, we assessed the seasonal variation in physicochemical parameters of water across EKW and investigated the role of nitrifying bacteria as probiotics. We statistically analyzed various physicochemical properties of water samples from EKW. Results of the statistical analysis indicated a significant variation in all the physicochemical parameters across the selected water bodies of EKW (p < 0.01). We isolated and enumerated Nitrosomonas sp. and Nitrobacter sp. and assessed their ability to degrade trichloroethylene (TCE). The role of Nitrosomonas and Nitrobacter sp. were further investigated and established through a small-scale experiment. Two microbial isolates, NSW3 and NBW2, displayed superior TCE degradation ability at pH 5, and the application of these strains as probiotics were found to improve the quality of water and survival rate of fishes in the treated experimental tanks. Our findings suggest that the application of the above mixed bacterial cultures in aquaculture could be an effective and environment-friendly approach for safe and productive aquaculture operations.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Water quality assessment of East Kolkata Wetland with a special focus on bioremediation by nitrifying bacteria

Saha

Sarkar

Bandyopadhyay

2021

Water Science and Technology

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“…In the context of global climate change, wetlands defend coastal ecosystems against the acute impacts of rising sea levels and extreme weather conditions [11]. Additionally, they play a critical role in flood regulation, erosion control, coastline protection, and water purification and act as shields that absorb pollutants and reduce the severity of sudden environmental hazards [10,12].…”

Section: Introductionmentioning

confidence: 99%

Assessment and Management of the Water Quality and Heavy-Metal Pollution of a Protected Hypersaline Wetland in the United Arab Emirates

Samara,

Knuteson,

Abdulateef

et al. 2023

Water

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A hypersaline protected wetland in the UAE was assessed from February to April of 2021 for parameters such as temperature, pH, COD, total dissolved solids, ORP, electrical conductivity, total and E. coli, salinity, turbidity, chloride, ammonia, nitrate, total nitrogen, phosphorus, and heavy metals to assess its current status. Wasit Nature Reserve’s salinity values ranged between 17.1 and 64.78 psu, while D.O values ranged between 6.3 and 8.41 ppm. The values for nitrate were between 50.70 and 57.6 ppm, while the values for chloride were between 12,642.0 and 37,244.0 ppm. Results for heavy metals showed that Iron and Aluminum were the highest concentrations in sediments, with an average of 5599.3 mg/kg and 3171.1 mg/kg, respectively. Mercury and arsenic reported the lowest concentrations, with an average of 0.0 mg/kg and 2.4 mg/kg, respectively. Hazard quotient values were 2239.72 mg/kg for iron, 0 mg/kg for mercury, and 0.05 mg/kg for arsenic, indicating that iron levels are considered hazardous and water-quality indicators concluded high pollution levels. The results indicate that the hypersaline nature of the wetland contributes to the deviation from the permissible limits, as demonstrated by the calculated “poor“water-quality index and “highly polluted” water-pollution index. Due to their ecological relevance, wetlands in the region could serve as indicators of ecological well-being, highlighting the need for regular monitoring and evaluation.

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Geochemistry and mass balance of selected heavy metals in East Kolkata Wetlands, a Ramsar site of West Bengal, India

Das

Kamalakannan

2023

Journal of Hazardous Materials

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Development of Molecular Identification of Nitrifying Bacteria in Water Bodies of East Kolkata Wetland, West Bengal

Cited by 3 publications

References 22 publications

Water quality assessment of East Kolkata Wetland with a special focus on bioremediation by nitrifying bacteria

Water quality assessment of East Kolkata Wetland with a special focus on bioremediation by nitrifying bacteria

Assessment and Management of the Water Quality and Heavy-Metal Pollution of a Protected Hypersaline Wetland in the United Arab Emirates

Geochemistry and mass balance of selected heavy metals in East Kolkata Wetlands, a Ramsar site of West Bengal, India

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