Spatial and Temporal Variation of Total Nitrogen and Total Phosphorus in Major River Systems of Sundarbans Mangrove Forest, Bangladesh

Rahaman, S.M.B.; Sohag, Md. Sharif Hasan; Ghosh, Arghya; Biswas, Sudhin Kumar; Sarder, Lipton; Bir, Joyanta; Opu, Shahjahan Siraj

doi:10.5376/ijms.2013.03.0016

Cited by 5 publications

(8 citation statements)

References 13 publications

(6 reference statements)

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“…They found that the distribution of nutrients is influenced by tidal cycle as indicated by changes in tidal height. Rahaman et al (2013b), who made field observations in the Sundarbans intertidal mangrove forest to analyze spatial and temporal variations in phytoplankton abundance and species diversity, reported that spatial and temporal variations in water quality conditions of the RSs indicate the influence of various climatic and local forcing functions.…”

Section: Tidal Variations Of Nutrientsmentioning

confidence: 99%

Nutrient dynamics in the Sundarbans mangrove estuarine system of Bangladesh under different weather and tidal cycles

et al. 2013

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Introduction: Seasonal and tidal variations in nutrient concentration and water quality were investigated in the western Sundarbans of Bangladesh during the post-monsoon, winter and monsoon seasons during 2010-2011. Methods: Water collected from the surface, middle and bottom layers at six locations of the Kholpetua-Arpangashia river system during high and low tides was analyzed for temperature, salinity, pH, dissolved oxygen (DO), total dissolved solids (TDS), electrical conductivity (EC) and dissolved nutrients (NO 3-N, PO 4-P, SO 4 and NH 3-N). Results: The study revealed that nutrient concentrations were influenced by seasonal changes. Mean nutrient levels during post-monsoon, winter and monsoon seasons, respectively, were in the following ranges

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Section: Tidal Variations Of Nutrientsmentioning

confidence: 99%

Nutrient dynamics in the Sundarbans mangrove estuarine system of Bangladesh under different weather and tidal cycles

et al. 2013

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“…Moreover, Sonneratia apetala was introduced into Yigluo Bay in 1993 and was highly adaptive, so it grew very fast in the low intertidal zone (Chen et al 2004;Wang et al 2013). Because of the varied environmental conditions consequent upon the change of soil elevation mentioned above, soil attributes in mangroves may vary among the different mangrove communities (Ferreira et al 2010;Rahaman et al 2013;Yu et al 2013) and this may have implications for SOC fractions in mangroves. In this context, it is noteworthy that few pedological studies have been carried out along a microtopographic gradient of a mangrove ecosystem and upon SOC fractions in mangrove ecosystems.…”

Section: Introductionmentioning

confidence: 96%

Distribution of dissolved organic carbon and KMnO4-oxidizable carbon along the low-to-high intertidal gradient in a mangrove forest

et al. 2015

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Purpose Research on soil organic carbon (SOC) fractions is needed in order to improve the understanding of natural processes that take place in mangroves. This study aimed to evaluate the variation of SOC fractions along a low-to-high intertidal gradient and also investigate the relationship of SOC and vegetation biomass in the mangroves of Yingluo Bay, South China. Materials and methods Soil samples were collected from mangrove quadrats in the different intertidal zones. Total SOC and SOC fractions (such as dissolved organic carbon (DOC) and KMnO 4 -oxidizable carbon (KMnO 4 -C)) were analyzed, and vegetation biomass was also quantified. Results and discussionThe results showed that both the concentrations and pools of the SOC fractions increased along the low-to-high intertidal gradient. The KMnO 4 -C density changed from 5.66 to 8.48 t/ha, while their DOC densities increased from 465.14 to 734.41 kg/ha. Along the low-tohigh intertidal gradient, vegetation biomass and some soil attributes (such as TN, SOC, and soil textural characteristics) showed similar change tendencies as the SOC fractions. Correlation and multiple stepwise regression analysis indicated that DOC was significantly controlled by SOC, while KMnO 4 -C was significantly regulated by both SOC and TN. Multiple stepwise regression of SOC, against the soil attributes and vegetation biomass, revealed that SOC was significantly affected by the salinity and vegetation biomass. In turn, SOC fractions would be indirectly affected by the salinity and vegetation biomass. Conclusions Distribution of SOC fractions showed clear spatial patterns along the low-to-high intertidal gradient. This result indicated that SOC fractions were controlled by the environmental gradients which are created by geomorphological processes.

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“…Phosphate concentration in the study area non-significantly varied among the sampling stations (p˃ 0.05) but significant variation was found among the sampling months (p˂ 0.05). Rahaman et al (2013a) also observed lower phosphate concentration ranging from 0.05 to 0.42 mg/L with an average of 0.12 mg/L in the Rupsha-Pasur river system. The average phosphate value of 0.323 mg/L was recorded in this study was higher than that of 0.115 mg/L, as has been reported by Wahid et al (2007).…”

Section: Nutrients Parametersmentioning

confidence: 76%

“…The Pearson correlation matrix (Table 2) showed that the concertation of ammonium in PRE had significantly positive correlation with surface water temperature (r = 0.45), salinity (r = 0.28) and TDS (r = 0.29) but showed negative correlation with DO concentration (r = 0.42) and pH (r = 0.42). Rahaman et al (2013a) recorded NH 3 -N concentrations between 0.02 and 0.38 mg/L with an average of 0.14 mg/L 0.00 with significantly higher concentrations ranging from 0.26 to 0.38 mg/L during the monsoon season and relatively lower amounts ranging from 0.02 to 0.08 mg/L during the post-monsoon and winter periods. Wahid et al (2007) reported an average ammonia concentration of 0.054 mg/L, whereas the earlier studies reported that ammonia concentration ranged from 0.001 to 0.33 mg/L with an average of 0.043 mg/L (IWM, 2003).…”

Section: Nutrients Parametersmentioning

confidence: 96%

“…Nitrate concentration in the PRE was found to be negatively correlated with surface water temperature, pH and TDS and positively correlated with dissolved oxygen concentration and nitrite concentration (Table 2). Rahaman et al (2013a) recorded mean nitrate concentration ranging from 0.04 to 0.46 mg/L with an average of 0.15 mg/L in the Kholpetua-Arpangashia River system in the Sundarbans mangrove ecosystem. The maximum desirable range of nitrate concentration in the estuary has been recommended as much as 10 mg/L by Environmental quality standards (EQS).…”

Section: Nutrients Parametersmentioning

confidence: 99%

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Assessment of Physico-Chemical Properties of the Pasur River Estuarine Water

Shefat

Chowdhury

Haque

et al. 2021

Ann. Bangladesh Agric.

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This study aimed to investigate physico-chemical properties of the Pasur River Estuarine (PRE) water connected to the Sundarbans mangrove ecosystem during the dry season for examining the ecosystem health. In-situ measurement and water sample collection were performed to assess physico-chemical properties at fifteen sampling stations along the main axis of the estuary in March 2018, April 2018, January 2019 and March 2019. Surface water temperature ranged from 20.7 to 33.7°C, pH from 7.1 to 7.9, and salinity from 8.5 to 16.2 PSU (practical salinity unit). Dissolved Oxygen (DO) concentration varied from 5.9 to 8.4 mg/L. Ammonium-nitrogen (NH4 +) was the dominant nitrogenous compound among the dissolved inorganic nitrogenous (NH4 + +NO3 -+NO2 -) compounds, and ranged from 0.11 to 2.11 mg/L. Higher NH4 + concentration in water column was largely attributed to release by tidal wash-out of the interstitial waters of the surﬁcial mangrove sediments. In contrast, phosphate concentration varied from 0.07 to 5.8 mg/L. The Pearson correlation coefficient was calculated to elucidate the correlation among physico-chemical properties during the dry season. Temperature showed a significant positive correlation with salinity and total dissolved solids (TDS), and negative correlation with DO. Similarly, salinity showed a significant positive correlation with TDS and negative correlation with DO. According to the Redfield ratio, the PRE is a nitrogen-limited estuarine system during the dry season. Ann. Bangladesh Agric. (2020) 24(1) : 1-16

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Spatial and Temporal Variation of Total Nitrogen and Total Phosphorus in Major River Systems of Sundarbans Mangrove Forest, Bangladesh

Cited by 5 publications

References 13 publications

Nutrient dynamics in the Sundarbans mangrove estuarine system of Bangladesh under different weather and tidal cycles

Nutrient dynamics in the Sundarbans mangrove estuarine system of Bangladesh under different weather and tidal cycles

Distribution of dissolved organic carbon and KMnO4-oxidizable carbon along the low-to-high intertidal gradient in a mangrove forest

Assessment of Physico-Chemical Properties of the Pasur River Estuarine Water

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