Diurnal variation of abundance of bacterioplankton and high and low nucleic acid cells in a mangrove dominated estuary of Indian Sundarbans

Mukherjee, Rishmita; Acharya, Avanti; Gupta, Vandana; Bakshi, Sneha; Paul, Madhusudan; Sanyal, Prasun; Mukhopadhyay, Sandip

doi:10.1016/j.csr.2020.104256

Cited by 6 publications

(5 citation statements)

References 122 publications

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“…The highest and abundant compound observed in the present study is phenolics among other PPCPs indicates its long-term biodegradation and persistent nature along with some natural sources as the decomposition of organic materials of dead plants apart from only anthropogenic. In the present study the natural sources can be from huge mangrove litter leaching in the present study as evident from optical proxies (S 275 -295 and SUVA 254 ) of more terrigenous type chromophoric dissolved organic matter (CDOM) in Indian Sundarbans (Sanyal et al 2020), due to the paucity of the studies regarding the mangrove litter leaching or the natural sources of phenolics into estuarine systems it is difficult to conclude the dominant or exact natural source of phenolics in Indian Sundarbans.…”

Section: Phenolicsmentioning

confidence: 68%

“…Many other studies state the higher concentration of Phenolics in estuarine water samples are not only by general anthropogenic discharges such as sewage treatment plants, urban city wastes or industrial effluents but might be due to some other factors such as sorption/desorption by sediment, long time for biotransformation of phenolics (Wang et al 2013., Diao et al 2017 and other the natural sources such as plant litter leaching as source of Phenolics (Sanyal et al 2020). Other studies reported that the half-life period of transformed phenolics group such as nonyl phenol are more than months so are easily transported and persistent a long way by river flow which might also results observing high concentration of phenolics in the present estuarine water (Ying et al, 2002;Li, 2003, Xu et al 2006).…”

Section: Phenolicsmentioning

confidence: 99%

“…Transitional environments such as rivers, lagoons and estuaries are unique habitat for study as are situated between land and sea harbouring many aquatic and marine organisms. There are plenty of studies based on pollutants such as metals, dissolved nutrients, greenhouse gases, pesticides, pathogens and biomonitoring using biological organisms as tracers and proxies (Mukhopadhyay et al 2002., Na et al 2018., Dutta et al 2019., Mukherjee et al, 2020. The class of emerging contaminants which have recently gained attention are Parabens (alkyl esters of p-hydroxybenzoic acid) ranging from methyl to butyl or benzyl groups; Triclosan (5-chloro-2 (2,4-dichlorophenoxy) phenol-TCS) are biphenyl ether; Phthalates (plasticizers) ranging from dimethyl to di-n-butyl, benzyl, ethylhexyl and di-n-octyl phthalate; Phenols (phenolics of nonyl, octyl, cumyl and bisphenol A,S,F); NSAIDs (non-steroidal anti-inflammatory drugs) such as Ibuprofen, Ketoprofen, Diclofenac, Naproxen and etc.…”

Section: Introductionmentioning

confidence: 99%

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Occurrences, distribution and sources of Pharmaceuticals and Personal Care Products (PPCPs) in the mangrove dominated estuaries in the central part of the Indian Sundarbans, a world heritage site.

GUPTA,

Vimalkumar,

Sanyal

et al. 2024

Preprint

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This study aimed to provide the baseline report on the occurrence of five emerging contaminants namely Phenols, Triclosan, NSAIDs, Phthalate and Parabens under pharmaceuticals and personal care products (PPCPs) in the surface water of Indian Sundarbans estuarine system. The emerging contaminants of PPCPs were investigated from the two estuaries in the central of Indian Sundarbans namely Thakuran and Matla covering entire stretch during post monsoon season using gas chromatography mass spectrometry (GC-MS). Among the different groups of PPCPs the most abundant found to be Phenolics with mean concentration ranging from 230 to 4586 ng/L following Triclosan with mean concentration for both Thakuran and Matla ranging from 96 to 1885 ng/L. The surface water concentration of remaining PPCPs ranged widely; like for NSAIDs (290 to 791 ng/L), Phthalates (39-302 ng/L) and Parabens (21-263 ng/L). Among the different Phenolics derivatives the highest concentration was found for octyl phenol ranging 282.2 to 17590.1 ng/L followed by Ketoprofen ranging 614.6 to 2333.7 ng/L and both derivatives observed to be high in the seafront side of Matla estuary. For the Phthalates derivatives high concentration witnessed in upstream of Thakuran and Matla i.e., for Di-2-ethylhexylphthalate ranging from 60.5 to 494.8 ng/L while for Parabens derivatives high concentration observed in downstream of Thakuran i.e., Ethyl paraben ranging from 23.7 to 598.7 ng/L. The correlation of water quality parameters with different PPCPs helps to elucidate the source as Phthalates are positively correlated with DIN and DIP which clarifies its typical anthropogenic source from catchment areas, run off from domestic sewage and effluents. Significant spatial variation observed for PPCPs indicating persistence and long residence of these xenobiotics in the mangrove dominated estuaries of Indian Sundarbans.

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Section: Phenolicsmentioning

confidence: 68%

Section: Phenolicsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Occurrences, distribution and sources of Pharmaceuticals and Personal Care Products (PPCPs) in the mangrove dominated estuaries in the central part of the Indian Sundarbans, a world heritage site.

GUPTA,

Vimalkumar,

Sanyal

et al. 2024

Preprint

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“…The average tidal variation of estuarine DIN was well aligned with the average N 2 O tidal variation (Figure 3C), further providing an evidence of nitrification. An evidence of microbe-mediated nitrification has been observed in the water column (Mukherjee et al, 2020). Taken together, this means that the in situ N 2 O production occurs within a short time frame and the well-mixed nature of the estuary homogenizes the N 2 O% in the waters.…”

Section: Tidal Patternmentioning

confidence: 82%

Distribution and Dynamics of Radiatively Active Gas (RAG) Emissions From Major Estuaries of the Sundarbans Mangrove, India

et al. 2022

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The world’s largest mangroves ecosystem, the Sundarbans, being highly productive and a place for extensive organic matter cycling, is considered to be the hotspot for biogeochemical studies in the tropical estuarine environment. Hence, the spatial and temporal dynamics of the biogenic gases (CO2, CH4, and N2O), also known as radiatively active gases, were measured in mangrove-dominated estuaries of the system. In addition to spatial and seasonal observation, three full tidal cycles were observed at one site. Results showed that the air/water gas saturations were widely distributed and highly variable along the stretch. The gas saturations showed varying responses to salinity and tidal fluctuations. This indicated that localized biogeochemical processes may be more influential than simple mixing and dilution processes in controlling the variability of these gases. The surface waters were always supersaturated with CH4 (Up to 13,133%) relative to the atmosphere. However, N2O ranged from 8 to 1,286% and CO2 from 30 to 2075%. N2O fluxes were ∼4.8 times higher in the pre-monsoon than the post-monsoon. CH4 fluxes were ∼3.6 times higher in the pre-monsoon than both the monsoon and the post-monsoon. CO2 fluxes were ∼10 times higher in the monsoon than both the pre-monsoon and the post-monsoon. The seasonality in the gas saturation could be linked more to the availability of substrates than physicochemical parameters. Overall, air/water CH4 fluxes varied maximally (0.4–18.4 μmol m−2 d−1), followed by CO2 fluxes (−0.6–10.9 mmol m−2 d−1), and N2O fluxes varied the least of all (−0.6–5.4 μmol m−2 d−1). Interestingly, CH4 and N2O fluxes were positively correlated to each other (p < 0.05), suggesting organic matter decomposition as the key factor in the production of these two gases. Finally, these water–air CO2, CH4, and N2O flux estimates show that the estuaries are a modest source of CH4 but fluctuate between sources and sinks for CO2 and N2O gases.

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“…As the delta is maximally composed of alluvial soil of the flooded plain made up of river deposition and siltation, the organic constituents along with different microbes including bacteria, fungi, parasites, helminthes, virus play an important role for the cultivation of different vegetations in the soil [89]. The maximal humid situation of upstream in comparison to the downstream provides variations in the fungi pollens that also changes the physio-chemical soil texture for a long time period [90][91][92][93][94][95][96][97][98][99][100][101][102][103][104][105][106]. Sundarban river delta is also an example of this largest deltoid soil microbial activity [104,[107][108][109][110][111][112][113][114][115][116][117][118][119][120][121].…”

Section: Ganga-brahmaputra-meghna Delta (Gbm)mentioning

confidence: 99%

Microbial Prevalence in Soil Water in the River Deltas of the World

Ghosh,

Acharya

2024

SAJRM

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There is a wide range of diverse soil and aquatic microbes reside in different deltas of the world that mainly exhibit in various forms such as bacteria, fungi, parasites, archaeans, actinomycetes, virus etc. They contribute to the environment in various ways to maintain the balance of natural elements, bio geological components and also help in protecting the ecological components. Microbes that are living in the soil provide plants along with environmental and natural protection from diseases and pests. They are very much essential for transforming nitrogen and nutrients into the forms that is consumable for plants. Decomposition, production of Oxygen, evolution, as well as symbiosis are the vital roles that are played by different soil and aquatic microbes. Some river deltas show maximum populations of saline soil dependent bacterial and fungal community, where as some river deltas are enriched with some specific microbes that are responsible for soil remediation. In some cases some species of hydrocarbon degrading microorganisms contribute to differences in C, N, P ratios. As the microbes are also responsible for producing different antigens as well as allergens that are mainly causative agents for varying infectious diseases, in need of its curative drugs and antibiotic medicines some microbes are involved in research studies for production of medicinal drugs and anti-allergens.

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Diurnal variation of abundance of bacterioplankton and high and low nucleic acid cells in a mangrove dominated estuary of Indian Sundarbans

Cited by 6 publications

References 122 publications

Occurrences, distribution and sources of Pharmaceuticals and Personal Care Products (PPCPs) in the mangrove dominated estuaries in the central part of the Indian Sundarbans, a world heritage site.

Occurrences, distribution and sources of Pharmaceuticals and Personal Care Products (PPCPs) in the mangrove dominated estuaries in the central part of the Indian Sundarbans, a world heritage site.

Distribution and Dynamics of Radiatively Active Gas (RAG) Emissions From Major Estuaries of the Sundarbans Mangrove, India

Microbial Prevalence in Soil Water in the River Deltas of the World

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