Evaluation of Gangetic dolphin habitat suitability under hydroclimatic changes using a coupled hydrological-hydrodynamic approach

Sharma, Ashutosh; Baruah, Anupal; Mangukiya, Nikunj K.; Hinge, Gilbert; Bharali, Biswadeep

doi:10.1016/j.ecoinf.2022.101639

Cited by 10 publications

(4 citation statements)

References 49 publications

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“…It can even add to our capability to understand the broad-scale impact of human interventions in river dynamics. Several studies show the use of HEC-RAS to assess e-flow or WUA (Gregory et al, 2018;Nale et al, 2016;Papadaki et al, 2017;Sharma et al, 2022). Model predictive capability is dependent on the quality of the input data and its calibration and validation (Pappenberger et al, 2005).…”

Section: Discussionmentioning

confidence: 99%

“…Sayed and Akter (2021) used HEC‐RAS model to simulate the historical discharge and water surface level to assess the environmental flow for a fish species Hilsa ( Tenualosa ilisha ). This model can also predict the impact of human intervention and climate change on habitat availability (Mahato et al, 2022; Sharma et al, 2022).…”

Section: Introductionmentioning

confidence: 99%

“…The model discretises the mass conservation equation, using finite‐volume approximation (Sharma et al, 2022). The momentum flux equations () and () are solved through the Crank–Nicholson numerical method (Abdi et al, 2020).…”

Section: Introductionmentioning

confidence: 99%

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Hydrodynamic modelling to assess habitat suitability of the Ganga River dolphins

Kailash Sonkar,

Gaurav,

Kumar

et al. 2024

Ecohydrology

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The Ganga River hosts a metapopulation of endangered aquatic species. This study uses a hydrodynamic model (HEC‐RAS) to assess the habitat suitability of the Ganga River dolphins (GRDs) in a small reach (7.5 km) of the Ganga River at the upstream of Narora barrage in varying flow. We use Lidar points clouds to generate topography, Acoustic Doppler Current Profiler (ADCP), and differential GPS (DGPS) to measure channel bathymetry and streamwise water surface slope. Further, the water level data from satellite altimeter is used to calibrate the model and discharge measured in field to validate the model output. We found that in the high flow period, the required flow depth for dolphin habitat is available throughout in the study reach. However, in the lean flow, the required flow depth and velocity are available only in some patches. The methodology developed here would be very useful in monitoring hydraulic habitat suitability of aquatic species in ungauged rivers.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Hydrodynamic modelling to assess habitat suitability of the Ganga River dolphins

Kailash Sonkar,

Gaurav,

Kumar

et al. 2024

Ecohydrology

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“…The habitat suitability index (HSI) is for evaluating the suitability and quality of wildlife habitats, and it is the biological basis of habitat simulations (Boavida et al, 2015;Morales-Marín et al, 2019;Sharma et al, 2022). Habitat suitability curves present the relationship between a species' growth and its influencing factors (Cho et al, 2012;Knudson et al, 2015), which is generally determined by the appearance frequency and distribution of the species.…”

Section: Habitat Suitability Model For the Yellow River Carpmentioning

confidence: 99%

Effects of dam construction on the reproduction of the Yellow River carp (Cyprinus carpio) in lower reaches of the Yellow River, China

Ruan

Zhang

et al. 2023

Front. Environ. Sci.

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The construction of dams changes the natural flow of rivers, affects the integrity of river ecosystems, and causes a series of ecological and environmental problems, such as habitat fragmentation and reduction in fish resources. This study took a section of the Yellow River in China from the Xiaolangdi Dam to Gaocun as the research area. The Yellow River carp (Cyprinus carpio) was selected as an indicator species for its economic value. A habitat suitability model for the Yellow River carp coupled with a one-dimensional hydrodynamic model was built. It was used to simulate dynamic changes in the reproductive habitat suitability of the Yellow River carp before and after the construction of the Xiaolangdi Dam. We demonstrated the spatial distribution of the carp’s spawning reaches before and after the Xiaolangdi Dam construction and investigated its influence on the spawning activity and larval development of the species accordingly. The results apparently showed that the construction and operation of the Xiaolangdi Dam delayed the breeding time of the Yellow River carp and decreased its quality by 5.28%. In particular, the larval fish development was greatly affected by the dam, with the quality being reduced by 8.95%. Furthermore, the habitat suitability of the spawning reaches slightly decreased as the extent of spawning reaches decreased by 16.23%, and several spawning reaches were lost entirely. This study shed light on the response of the Yellow River carp to hydrological and physical changes in the period 1980–1990 before the construction of the Xiaolangdi Dam and 2006–2018 after the construction. Thus, it is a valuable reference for the ecological scheduling of discharges of the Xiaolangdi Dam.

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Sustainability Through Integrated Resilience and Risk Management: Rivers and Disasters in Changing Climate

Amin,

Dar,

Gupta

2023

River, Sediment and Hydrological Extremes: Causes, Impacts and Management

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Evaluation of Gangetic dolphin habitat suitability under hydroclimatic changes using a coupled hydrological-hydrodynamic approach

Cited by 10 publications

References 49 publications

Hydrodynamic modelling to assess habitat suitability of the Ganga River dolphins

Hydrodynamic modelling to assess habitat suitability of the Ganga River dolphins

Effects of dam construction on the reproduction of the Yellow River carp (Cyprinus carpio) in lower reaches of the Yellow River, China

Sustainability Through Integrated Resilience and Risk Management: Rivers and Disasters in Changing Climate

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