Unravelling the structural changes of periphyton in relation to environmental variables in a semilotic environment in the Sundarban eco-region, India

Gogoi, Pranab; Sinha, Archana; Tayung, Tasso; Naskar, Malay; Sarkar, Soma Das; Ramteke, Mitesh H.; Das, Sanjoy; Kumar, K. Lohith; Suresh, V. R.; Das, Basanta Kumar

doi:10.1007/s12517-021-08386-4

Cited by 6 publications

(2 citation statements)

References 55 publications

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“…The total phytoplankton density was found maximum during monsoon which might be due to high nitrate concentration. The nitrate concentration might be due to agricultural runoff and jute retting at that time (Ghosh and Biswas, 2015).The lowest abundance of phytoplankton abundance during post-monsoon due to the considerablepresence of macrophytes at that time (Gogoi et al, 2021c).…”

Section: Plankton Composition and Distributionmentioning

confidence: 99%

Seasonal influence of physicochemical and climatic parameters on phytoplankton diversity and abundance pattern in community managed semi- impacted floodplain wetland

Das,

Mohanty,

Bhattachaya

et al. 2024

Preprint

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Wetlands provide numerous ecological services and are key habitats for aquatic flora and fauna. In the Beledanga wetland, the current study was conducted for three years, from July 2019 to June 2021, to evaluate the seasonal influence of physico-chemical parameters on phytoplankton diversity and abundance patterns. Overall 48 phytoplankton taxa were observed. Group Bacillariophyceae (27%) contributed the maximum to the total phytoplankton density. The total abundance of phytoplankton was found utmost during monsoon (4.081×103 unit l-1 ) and least during post-monsoon (3.316×103 unit l-1). One-way ANOVA indicated significant seasonal differences (p<0.05) for some genera. The study gave the idea about the most influencing physic-chemical parameters (DO, turbidity, total hardness, Ca2+, and nitrate) on the growth of phytoplankton with the help of different multivariate and univariate analysis (Canonical correspondence analysis, Karl Pearson’s correlation). The study again highlighted that climate parameters (temperature and rainfall) had some effect on the phytoplanktonic groups. Our study conceded that N: P in the studied wetland was less than the Redfield ratio (16:1) in all three seasons,while the Si:P ratio was noticed in the high range (15:1) during pre-monsoon. The value of theShannon diversity index and Margalef’s species richness index were noticed to be > 3, which signified quite rich in phytoplankton diversity and less pollution in the ecosystem. The algal pollution index was predominant during all the seasons, indicating a high organic load which might be due to seasonal jute retting and intensification of agricultural farming.

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Section: Plankton Composition and Distributionmentioning

confidence: 99%

Seasonal influence of physicochemical and climatic parameters on phytoplankton diversity and abundance pattern in community managed semi- impacted floodplain wetland

Das,

Mohanty,

Bhattachaya

et al. 2024

Preprint

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“…Periphyton, in relationship with water quality variables, was selected as an indicator based on a report by Wehr and Sheath [30] that found the representation of algae, as the primary producer biomass in wetland systems, was between 30 and 50%. The presence of algae biomass is also not only a sensitive indicator of the physicochemical conditions and biological integrity of wetland systems, but it can also reflect changes in wetland water quality [31][32][33]. The current study's objective was to use periphyton assemblage in relationship with water quality variables to assess the responses of an ecologically engineered, critically endangered wetland, as a passive treatment system, receiving AMD before and after a severe dry spell.…”

Section: Introductionmentioning

confidence: 99%

Using Periphyton Assemblage and Water Quality Variables to Assess the Ecological Recovery of an Ecologically Engineered Wetland Affected by Acid Mine Drainage after a Dry Spell

et al. 2022

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The Grootspruit valley bottom wetland in South Africa, due to the impact of acid mine drainage (AMD) from an abandoned coal mine, was severely degraded before ecologically engineered interventions, as a passive treatment process, in 2014. The surface water flow of the wetland was redirected using concrete structures to enlarge the surface area of the wetland by 9.4 ha and to optimize passive treatment. Although the ecologically engineered interventions showed an improvement in water quality after the rewetting of the enlarged wetland areas, the 2016 drought had a devastating effect on the wetland’s water quality. Limited natural removal of metals and sulfate concentrations by the wetland occurred during the 2016 drought, when compared with the 2015 pre-drought conditions. This period showed higher concentrations of metals, sulfate (SO42−), and electrical conductivity (EC) associated with the acidic surface water. Of particular interest was an observation of a substantial shift in pollutant-tolerant algae species in the ecologically engineered wetland outflow between the years 2015 and 2016. During the dry spell period of 2016, the diatoms Gyrosigma rautenbachiae (Cholnoky), Craticula buderi (Brebisson), and Klebsormidium acidophilum (Noris) were observed at the outflow. The latter species were not observed during the wetland surveys of 2015, before the dry spell. From late 2017 onwards, after the drought, environmental conditions started improving. In 2018, periphyton indicator species and the surface water quality were comparable to the wetland’s recorded status pre-2016. The study revealed not only a regime shift, but also an ecological function loss during the drought period of 2016, followed by recovery after the dry spell. A distinct reduction in SO42−, sodium (Na), magnesium (Mg), EC, manganese (Mn), iron (Fe), silicon (Si), aluminum (Al), and pH, following the 2016 drought, highlights the utilization of water quality variables to not only assess the passive treatment responses of an ecologically engineered wetland, but also the progress relating to ecological recovery.

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Unraveling the phytoplankton altitudinal dynamics in relation to environmental variables in a Himalayan River, Teesta, India

et al. 2022

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Unravelling the structural changes of periphyton in relation to environmental variables in a semilotic environment in the Sundarban eco-region, India

Cited by 6 publications

References 55 publications

Seasonal influence of physicochemical and climatic parameters on phytoplankton diversity and abundance pattern in community managed semi- impacted floodplain wetland

Seasonal influence of physicochemical and climatic parameters on phytoplankton diversity and abundance pattern in community managed semi- impacted floodplain wetland

Using Periphyton Assemblage and Water Quality Variables to Assess the Ecological Recovery of an Ecologically Engineered Wetland Affected by Acid Mine Drainage after a Dry Spell

Unraveling the phytoplankton altitudinal dynamics in relation to environmental variables in a Himalayan River, Teesta, India

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