Ecohydraulic modelling of Nestos River Delta under low flow regimes

Boskidis, Ioannis; Kokkos, Nikolaos; Sapounidis, A.; Triantafillidis, S.; Kamidis, Nikolaos; Koutrakis, E. T.; Sylaïos, Georgios

doi:10.1016/j.ecohyd.2018.06.004

Cited by 7 publications

(5 citation statements)

References 9 publications

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“…This shows that the survival adaptability of various fish species changes under different flow conditions, which is attributed to their different flow velocity and flow depth adaptability curves under the same substrate adaptability. Boskidis et al, (2018) In summary, there are many factors that affect the survival adaptability of fish and the most important is discharge. The same substrate often depends on the flow velocity and flow depth adaptability of the fish itself.…”

Section: Discussionmentioning

confidence: 99%

“…The River2D software was used for the numerical simulation of the habitat in this paper (Boskidis et al, 2018;Baek et al, 2021). River2D is a two-dimensional model of habitat simulation designed specifically for natural streams and rivers.…”

Section: Fish Habitat Model During Outburst Floods 231 Habitat Model ...mentioning

confidence: 99%

“…River2D requires detailed terrain data for the study area in the form of x, y, and z, where x and y represent geographical coordinates and z represents terrain elevation. Using DEM data, a large number of x, y, and z point coordinates were obtained and represent the river terrain and its characteristics (Boskidis et al, 2018).…”

Section: Fish Habitat Model During Outburst Floods 231 Habitat Model ...mentioning

confidence: 99%

See 2 more Smart Citations

The impact of floods triggered by natural dam breakage on the adaptability of downstream river fish—the 2018 baige outburst flood in the upper reaches of the Yangtze river in China

Xie,

Jiang,

Wen

et al. 2024

Front. Earth Sci.

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Outburst floods can affect the survival adaptability of fish. Although the survival adaptability of many fish species under low steady-flow conditions has been studied, research on the survival adaptability of fish species under large outburst flood conditions is lacking. This paper takes the 2018 Baige landslide dam as an example. A breach model was developed to calculate the outburst discharge of the landslide dam. The outburst flood hydrograph is simulated with the breach model, which shows that the difference between the peak discharge of the dam break simulation results and the measured data is 0.13×104 m3/s. In addition, the simulated hydrographs are the same as the measured hydrographs. Furthermore, a two-dimensional fish habitat model was used to analyse the adaptability of Schizothorax to survival during the breaching process. For the survival adaptability of Schizothorax, we observed that as the flow rate increased the weighted usable area (WUA) decreased, which indicated a decrease in the adaptability of Schizothorax survival. In contrast, as the flow rate decreased and the WUA increased, the survival adaptability of Schizothorax improved. In addition, the WUA of Schizothorax changed with the substrate of the riverbed; the smaller the channel suitability index (CSI) the greater the WUA. This study revealed the impact of outburst floods triggered by landslide dam failure on the survival adaptability of Schizothorax, and a method for assessing the impact of outburst floods on fish habitat adaptability is provided.

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Section: Discussionmentioning

confidence: 99%

Section: Fish Habitat Model During Outburst Floods 231 Habitat Model ...mentioning

confidence: 99%

Section: Fish Habitat Model During Outburst Floods 231 Habitat Model ...mentioning

confidence: 99%

See 1 more Smart Citation

The impact of floods triggered by natural dam breakage on the adaptability of downstream river fish—the 2018 baige outburst flood in the upper reaches of the Yangtze river in China

Xie,

Jiang,

Wen

et al. 2024

Front. Earth Sci.

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“…On the Greek part of the basin, the main uses of water resources from the river are the agricultural and the energy sector. In both parts, the natural environment, the biodiversity and the ecosystem services have great importance, since they occupy areas which are governed by special international environmental protection law [16][17][18][19][20]. As a result, ensuring the sustainability of the water resource in the Mesta/Nestos transboundary river basin is an urgent need.…”

Section: Study Areamentioning

confidence: 99%

Identifying Water Governance Priorities and Gaps in Transboundary Basins through SWOT: The Case Study of Mesta/Nestos River Basin

Karasani

Latinopoulos

Susanne

et al. 2022

EWaS5 International Conference: &Amp;ldquo;Water Security and Safety Management: Emerging Threats or New Challenges? Moving Fro

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“…The hysteresis of the water temperature in the downstream of the thermal stratification reservoir is affected to some extent by the discharge. Meanwhile, the discharge of the reservoir also affects the flow velocity and water depth distribution of the downstream river channel [16]. Therefore, it is necessary to predict the quality and quantity of fish habitats by simulating the spatial and temporal distribution of various hydraulic factors such as water temperature, velocity, and water depth in the reservoir and the downstream river.…”

Section: Introductionmentioning

confidence: 99%

Analysis of an Ecological Flow Regime during the Ctenopharyngodon Idella Spawning Period Based on Reservoir Operations

Qin

Pei

et al. 2019

Water

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The study of fish habitats is important for us to better understand the impact of reservoir construction on river ecosystems. Many habitat models have been developed in the past few decades. In this study, a fuzzy logic-based habitat model, which couples fuzzy inference system, two-dimensional laterally averaged hydrodynamic model, and two-dimensional shallow water hydrodynamic model, is proposed to identify the baseline condition of suitable habitat for fish spawning activities. The proposed model considers the reservoir and the downstream river channel, and explores the comprehensive effects of water temperature, velocity, and water depth on habitat suitability. A real-world case that considers the Ctenopharyngodon idella in the Xuanwei Reservoir of Qingshui River is studied to investigate the effect of in- and outflow of reservoir on fish habitat and the best integrative management measure of the model. There were 64 simulations with different reservoir in- and outflows employed to calculate the weighted usable area and hydraulic habitat suitability. The experimental results show that the ecological flow for Ctenopharyngodon idella spawning can satisfy the basic demand when the reservoir inflow is greater than 60 m3/s and the reservoir outflow is greater than 100 m3/s. The habitat ecological suitability is the best when the reservoir outflow is 120 m3/s. A more reasonable and reliable ecological flow range can be obtained based on the habitat model in this paper, which provides the best scenario for water resources planning and management in the Qingshui River Basin.

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Ecohydraulic modelling of Nestos River Delta under low flow regimes

Cited by 7 publications

References 9 publications

The impact of floods triggered by natural dam breakage on the adaptability of downstream river fish—the 2018 baige outburst flood in the upper reaches of the Yangtze river in China

The impact of floods triggered by natural dam breakage on the adaptability of downstream river fish—the 2018 baige outburst flood in the upper reaches of the Yangtze river in China

Identifying Water Governance Priorities and Gaps in Transboundary Basins through SWOT: The Case Study of Mesta/Nestos River Basin

Analysis of an Ecological Flow Regime during the Ctenopharyngodon Idella Spawning Period Based on Reservoir Operations

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