Effect of water physicochemistry on amphibian abundance in Sub-tropical Kupinde Lake of the Nepal Himalaya

Sunar, Chandra Bahadur; PANDEY, NARESH; Chand, Bijay; UPADHYAYA, LAXMI PRASAD; THAPA, BINA; PANT, RAMESH RAJ; KHANAL, LAXMAN

doi:10.13057/bonorowo/w120205

Cited by 2 publications

(5 citation statements)

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“…It is important to have suitable Physicochemical factors in their aquatic environment for their survival (Blaustein et al 1994). The pH range from 8.3 to 9.3 in this study indicated that the amphibian prefers slightly alkaline water rather than acidic one which is consistent with the study of Shaikh et al (2016) and Sunar (2022). The permissible range of pH for amphibians is 7.0 to 9.0 (Boyer & Christian 1995).…”

Section: Free Carbondioxide Hsupporting

confidence: 88%

“…However, all ponds have TDSs in tolerable limit for amphibians. Current study revealed the negative association (r= -0.025) between amphibian diversity and TDSs that resembled the Kupinde lake of Salyan district (Sunar et al 2022).…”

Section: Free Carbondioxide Hmentioning

confidence: 63%

Section: Field Surveys and Laboratory Analysismentioning

confidence: 99%

“…An amphibian survey was carried out during the rainy season from July to October using repeated visual encounter surveys (Crump & Scott 1994;Gillespie 1997;Sunar et al 2022) and opportunistic observation (Heyer et al 1994;Bhattarai et al 2018;Paudel et al 2023). Surveys were made from 6:00 to 9:00 in the morning and 18:00-21:00 once a week, spending three hours per visit walking along the perimeter of ponds (Sunar et al 2022). All the species encountered were photographed on the spot using a Nikon camera (model DX 18-55mm) and identified through consultation with experts and using the field guidebook "Herpetofauna of Nepal: A Conservation Companion" (Shah & Tiwari 2004).…”

Section: Field Surveys and Laboratory Analysismentioning

confidence: 99%

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Amphibian diversity and their association with water quality: A case study of the ponds of Bhaktapur, Nepal

Hyongaju,

Karmacharya,

Shrestha

2023

Nep. J. Zool.

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Amphibians are noteworthy bio-indicators and bio-control agents. They have an intimate relationship with their aquatic environment. Therefore, the present study was conducted aiming to investigate the association of amphibian diversity with the Physicochemical factors of pond water. The field surveys were carried out in Rani Pokhari, Bhajya Pokhari and Gonga Pokhari of Bhaktapur Municipality during the rainy season using repeated visual encounter surveys and opportunistic observations. Surveys were made around the ponds from 06:00 to 09:00 and from 18:00 to 21:00 once a week spending three hours per visit walking along the perimeter of ponds. Water samples were collected from the four corners of each pond. The physicochemical analyses of sample water were carried out as per the scientific instrumentations and standard procedures. A total of 77 individuals of five different species of amphibians belonging to three families were documented from the study areas. The higher values of the Shannon-Wiener diversity index (H=1.34), and Simpson’s reciprocal index (1/D=3.656) were recorded for Rani Pokhari. All the ponds exhibited a high degree of Pielou’s evenness index (e>0.9). The physicochemical analysis indicated a favourable aquatic environment for amphibians in Bhajya Pokhari and Rani Pokhari and the least favorable aquatic conditions in Gonga Pokhari which supported only few tolerant species. Karl Pearson’s correlation coefficient between Shannon-Wiener diversity index and physicochemical factors revealed a positive association with temperature (r=0.997), transparency (r=0.695) and dissolved oxygen (r=0.353) while a negative association with pH, electrical conductivity, free CO2, total dissolved solids and alkalinity. The water quality of the ponds of Bhaktapur is in healthy condition for the existence of amphibians and other aquatic organisms. The information obtained is useful for implementing amphibian and pond water conservation management. In addition, this study has established baseline database of amphibians for Bhaktapur district which is valuable for the local government to maintain biodiversity profile of the district.

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Section: Free Carbondioxide Hsupporting

confidence: 88%

Section: Free Carbondioxide Hmentioning

confidence: 63%

Section: Field Surveys and Laboratory Analysismentioning

confidence: 99%

Section: Field Surveys and Laboratory Analysismentioning

confidence: 99%

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Amphibian diversity and their association with water quality: A case study of the ponds of Bhaktapur, Nepal

Hyongaju,

Karmacharya,

Shrestha

2023

Nep. J. Zool.

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“…Lakes and ponds have always been important water sources in Nepal because they are major water sources for different sectors like irrigation, drinking water, industrial uses, etc. (Gurung et al 2019;Sunar et al 2022), which cover 5% of the total land area in Nepal (Sharma 2008). They are distributed with geological and altitudinal variations in the form of springs, rivers and flood plains, ponds, and swamps (Maltby et al 2011).…”

Section: Introductionmentioning

confidence: 99%

Assessment of water quality with comparative study of soil organic carbon stock in Nagdaha Lake and its adjacent agricultural land of Lalitpur, Nepal

Bhatta

Joshi

2023

Intl J Bonorowo Wetlands

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Abstract. Bhatta M, Joshi R. 2023. Assessment of water quality with comparative study of soil organic carbon stock in Nagdaha Lake and its adjacent agricultural land of Lalitpur, Nepal. Intl J Bonorowo Wetlands 13: 9-16. The lakes are an important component of the terrestrial Carbon (C) cycle. Estimates of global C burial by lakes suggest burial rates ranging from 0.03-0.07 Pg C yr?1. In the present study, the water quality of Nagdaha Lake and comparative analysis of Soil Organic Carbon (SOC) in Nagdaha Lake and its adjoining agricultural area has been studied. Water quality was determined following APHA (1998); SOC was determined by the Walkey and Black (1934) Titration Method. The present study results show that the mean N-nitrate and P-phosphate concentration in the waters of Nagdaha Lake is 0.135 mg/L and 0.123 mg/L, respectively, and the mean SOC concentration of Nagdaha Lake (71.39±42.58g kg-1) is higher than the adjacent agricultural land (14.36±8.38g kg-1). The t-test result also shows that there is a significant difference in SOC concentration in lakes (t = 9.18) and agricultural (t = 7.66) for agricultural land (p < 0.0001). Nagdaha Lake's area decreased from 52 ropani to 42 ropani between 1964 and 2022. Despite the decrease in area, Nagdaha Lake has more carbon per unit area than agricultural land. Since the conversion of lake land to agricultural land can release a large amount of carbon into the atmosphere, it is imperative to preserve the lakes to mitigate increasing atmospheric CO2 concentration.

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Effect of water physicochemistry on amphibian abundance in Sub-tropical Kupinde Lake of the Nepal Himalaya

Cited by 2 publications

References 47 publications

Amphibian diversity and their association with water quality: A case study of the ponds of Bhaktapur, Nepal

Amphibian diversity and their association with water quality: A case study of the ponds of Bhaktapur, Nepal

Assessment of water quality with comparative study of soil organic carbon stock in Nagdaha Lake and its adjacent agricultural land of Lalitpur, Nepal

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