Assessing the Nutrient Dynamics in a Himalayan Warm Monomictic Lake

Yaseen, Tabasum; Bhat, Sami Ullah

doi:10.1007/s11270-021-05054-x

Cited by 10 publications

(7 citation statements)

References 70 publications

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“…The surface water cooling had already begun in December, resulting in the entire water column displaying a gap of just 0.4 C from top to bottom. Thus, the lake reached the isothermal conditions found during the study in December, January and February (Reid, 1961;Yousuf, 1979;Yaseen & Bhat, 2021). Oxygen (O 2 ) concentrations were strong in the epilimnetic and the upper part of the metalimnetic zone, but during the stratification, the hypolimnion showed an oxygen deficit (O 2 < 1 mg/L).…”

Section: Identification Of Zooplanktonmentioning

confidence: 61%

“…The lake catchment reaches approximately 22 km 2 in area with an oblong outline (Rashid, Farooq, et al, 2013;Rashid, Masoodi, et al, 2013). Lake Manasbal is the only lake in Kashmir Valley to establish summer temperature differences through the water column and has been confirmed to be a warm monomictic lake in the valley (Qadri & Yusuf, 1978;Yaseen & Bhat, 2021). The isothermic state begins in November and lasts until February (Zutshi et al, 1980).…”

Section: Study Areamentioning

confidence: 99%

“…The hardness variations matched the total alkalinity. Overall, the hardness and alkalinity values for Lake Manasbal were found to be very high, suggesting that the lake gets groundwater from aquifers and springs from the lake bed (Islam et al, 2021;Yaseen & Bhat, 2021) containing limestone minerals such as calcite and dolomite (Dar et al, 2020;Tepe et al, 2005).…”

Section: Identification Of Zooplanktonmentioning

confidence: 99%

“…Specifically, thermally mediated vertical gradients of light, temperature, oxygen and nutrients have been identified as major driving forces that have a direct effect on the vertical distribution of zooplankton populations (Itigilova, 2019;Williamson & Rose, 2009), forcing these species to look for suitable niches (Lampert et al, 2003). Summer thermal stratification divides the lakes into warm, shallow, well-illuminated epilimnion and a cold, deep and dark hypolimnion with less solar irradiation (Gauthier et al, 2014;Hampton et al, 2014;Yaseen & Bhat, 2021).…”

mentioning

confidence: 99%

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Study of vertical distribution dynamics of zooplankton in a thermally stratified warm monomictic lake of Kashmir Himalaya

Yaseen

Bhat

2022

Ecohydrology

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In the present study, we investigated how stratification patterns and the related physico-chemical characteristics impact the vertical distribution of zooplankton community during the two consecutive stratifications in a warm monomictic lake (Manasbal Lake) in the Ganderbal area of Central Kashmir. Two consecutive events of stratification and deepening of thermocline recorded during the sampling period led to significant changes in the vertical distribution of zooplankton community.Physico-chemical characteristics displayed significant changes with the stratification pattern. Temperature of the surface water (0 m) increased gradually from 13 C to 29 C, resulting in a higher thermal gradient. pH and dissolved oxygen (O 2 ) displayed clinograde curves with vertical depth. Keratella cochlearis and Polyarthra vulgaris (Rotifers) were most dominant in terms of density and abundance at the thermocline and significantly decreased at the hypolimnion. Cladocera with significant difference along the vertical column showed an epilimnetic distribution with Ceriodaphnia reticulata and Ceriodaphnia quadriangularis being the major contributors. Among copepods, Cyclops viridis was recorded at all depths in greater dominance.Acanthodiaptomus denticornis (Diaptomidae) showed higher abundance from epilimnion to thermocline but decreased at hypolimnion. The results showed that the strong vertical gradient of environmental factors occurs in the Manasbal lake. Among them, dissolved oxygen, water temperature, and nutrients controlled the zooplankton community with higher aggregation above the thermocline. Therefore, the present investigation regarding the dynamic patterns of zooplankton community along the vertical gradient in a stratified lake could be important in monitoring habitats and to understand the ecology of warm monomictic lakes.

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Section: Identification Of Zooplanktonmentioning

confidence: 61%

Section: Study Areamentioning

confidence: 99%

Section: Identification Of Zooplanktonmentioning

confidence: 99%

mentioning

confidence: 99%

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Study of vertical distribution dynamics of zooplankton in a thermally stratified warm monomictic lake of Kashmir Himalaya

Yaseen

Bhat

2022

Ecohydrology

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“…Water 2022, 14, 3366 2 of 19 stratification is considered to be the most important limnological feature of aquatic ecosystems affecting a water column's chemical characteristics [9]. Thermal stratification has a significant role in the water quality status of dams as it influences many physiochemical and biological processes [10,11].…”

Section: Introductionmentioning

confidence: 99%

Using Multiple Indices for the Water Resource Management of a Monomictic Man-Made Dam in Southern Africa

Mnyango

Thwala

Oberholster

et al. 2022

Water

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This study employed different indices, namely the weighted arithmetic water quality index (WQI), Carlson Trophic State Index (TSI), van Ginkel TSI, and Trophic Level Index (TLI) to determine the water quality status of a man-made dam for the needs of sustainable water resource management in Southern Africa. The selection of indices for the study was based on the impacts of anthropogenic activities on the dam. The Roodeplaat Dam exhibited the spatial variation of physicochemical characteristics, indicative of influence by point-source pollution. Although the dam was classified as being eutro-hypertrophic, it was evident that water clarity was not a limiting factor but was P-limited, which was an indication of limiting conditions on primary production. Moreover, the WQI calculated for the dam with an average of 93.94 demonstrated very poor water quality that could be used for crop irrigation purposes only. As such, continued nutrient enrichment must be mitigated to sustain fitness for irrigation, at least. However, strategic goals should involve widening fitness for use. The selected indices were found to be effective for water resource management and could be applied to dams impacted by point-source pollution in Southern Africa. Thus, this study recommends the implementation of an integrated management approach, which needs to prioritize nutrient management to retain societal resource value.

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Working Approach: Field Investigation

Mishra

2023

SpringerBriefs in Environmental Science

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Assessing the Nutrient Dynamics in a Himalayan Warm Monomictic Lake

Cited by 10 publications

References 70 publications

Study of vertical distribution dynamics of zooplankton in a thermally stratified warm monomictic lake of Kashmir Himalaya

Study of vertical distribution dynamics of zooplankton in a thermally stratified warm monomictic lake of Kashmir Himalaya

Using Multiple Indices for the Water Resource Management of a Monomictic Man-Made Dam in Southern Africa

Working Approach: Field Investigation

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