Soil and water characteristics of Nanak Sagar reservoir, Tarai region of Uttarakhand, India

Raveendar, Banothu; Gurjar, Udai Ram; Takar, Suman; Gugulothu, Ravi; Mamidala, Shyamprasad; Guguloth, Balaji

doi:10.22271/chemi.2021.v9.i1m.11349

Cited by 2 publications

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“…Stable and balanced ecosystems have a rich species assemblage, as shown by the high positive connection between Shannon diversity (H′) and Margalef species richness (r = 0.996). Similar observations were documented by Mukherjee et al (2013) in Matlah River system, Raveendar et al (2018) in Nanaksagar reservoir, Johnson et al (2021) in Halali Reservoir, Gogoi et al (2022) in canals of Sunderban and Koushlesh et al (2022) in Sardar Sarovar Reservoir.…”

Section: Discussionsupporting

confidence: 84%

Effect of environmental drivers of fish assemblage and diversity patterns in temporal scale in Mongra Reservoir: A case study from one of the tributaries of Mahanadi Basin, Central India

Das,

Talagunda Srinivasan,

Sarang

et al. 2023

Ecohydrology

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Influence of seasonal variations in environmental parameters on fish assemblage and species diversity patterns was studied in a tropical reservoir of Central India during March 2021 to February 2022. A total of 41 species belonging to 7 orders, 15 families and 29 genera were recorded with highest diversity during post‐monsoon season compared to the pre‐monsoon season and monsoon season. The fish abundance similarity between the monsoon and post‐monsoon reached a maximum of 89%. Seasonal variations in the mean species abundance, Simpson dominance index, Shannon diversity index, Pielou's evenness index and Margalef's richness index were determined. One‐way ANOVA revealed a significant difference (P < 0.05) at the temporal scale. There was a significant seasonal difference in species abundance (P = 0.0006) and evenness index (P = 0.02) among the diversity indices. During the study period, three ‘vulnerable’ species, three ‘near threatened’ species and two ‘endangered’ species were caught. Carnivore dominance was evident throughout the year in the trophic guild of fishes. The Pearson correlation test revealed that water pH, dissolved oxygen, sediment organic carbon and clay percentage were positively correlated to all four diversity indices. Simpson and Margalef species richness diversity indices were positively correlated to sediment pH. Fish abundance was positively associated with sediment pH, silt, phosphorus and nitrogen content. Canonical correspondence analysis was used to investigate the relationships between fish assemblages and environmental conditions. Among the 19 physicochemical parameters, nine (dissolved oxygen, total dissolved solids, conductivity, transparency, hardness, phosphate and chlorophyll‐a, sediment nitrogen and phosphorus) characteristics were shown to be statistically significant (P < 0.05) in determining fish diversity. Dissolved oxygen, total dissolved solids, conductivity, transparency, hardness, phosphate and chlorophyll‐a of water and sediment nitrogen and phosphorus qualities were the key factors for the species abundance. The reservoir boasts a diverse fish population that allows multi‐species fishing and generates revenue for numerous local fishers. Fish habitats should be protected in order to maintain diversity and long‐term ecological benefits.

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Section: Discussionsupporting

confidence: 84%

Effect of environmental drivers of fish assemblage and diversity patterns in temporal scale in Mongra Reservoir: A case study from one of the tributaries of Mahanadi Basin, Central India

Das,

Talagunda Srinivasan,

Sarang

et al. 2023

Ecohydrology

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“…Phosphate value is minimum in the month of winters as it is utilized immediately by the overgrowth of phytoplankton. (Table 3) shows the levels of phosphate in different dams of Uttarakhand (Raveendar et al, 2021;Singh et al, 2020). The phosphate value recorded in all dams are in the range of 0.155 mg/l-0.557 mg/l.…”

Section: Resultsmentioning

confidence: 99%

Mathematical modelling for the phosphate and nitrate carrying capacity of dams in Uttarakhand

Panwar¹,

Shivam²,

Goyal³

et al. 2022

ECJ

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The Himalayan State of Uttarakhand has abundant natural water resources and 98 Hydro Electric Power Project (HEP’s) have been constructed, 25 are under construction and, 336 are planned for the future. The water bodies of these HEP’s can also be utilized for other purposes besides electric power generation. To conserve the endemic aquatic biodiversity, it is necessary to understand the phosphate and nitrate dynamics of these water bodies. As there are several HEP’s on a single river and the human population around them, water bodies have changed drastically during the last decade. In this study, we have calculated the phosphate and nitrate load-carrying capacity of six dams in the Uttarakhand state of India using the Vollen-Weider mathematical model modified by Dillon, Rigler and Beveridge. We have also measured the phosphate & nitrate content of these water bodies to confirm if our modelling methods confirmed with actual finding of sampling sites. The phosphate and nitrate carrying capacity of these six dams were found to be in the range of 0.155 mg/l to 0.557 mg/l and 0.6 mg/l to 1.3 mg/l. To the best of our knowledge, this is the first study in Uttarakhand that addresses the phosphate and nitrate carrying capacity using a mathematical model.

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Soil and water characteristics of Nanak Sagar reservoir, Tarai region of Uttarakhand, India

Cited by 2 publications

References 0 publications

Effect of environmental drivers of fish assemblage and diversity patterns in temporal scale in Mongra Reservoir: A case study from one of the tributaries of Mahanadi Basin, Central India

Effect of environmental drivers of fish assemblage and diversity patterns in temporal scale in Mongra Reservoir: A case study from one of the tributaries of Mahanadi Basin, Central India

Mathematical modelling for the phosphate and nitrate carrying capacity of dams in Uttarakhand

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