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Supporting data for "Beyond Single-Species E-Flows: A Multi-species Eco-Hydrodynamic Framework for Sustainable Dam Operations in the Yangtze River"
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| Created: | Nov 11, 2025 at 8:39 a.m. (UTC) | |
| Last updated: | Nov 11, 2025 at 8:51 a.m. (UTC) | |
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Abstract
This integrated dataset provides comprehensive field verification data for both hydrodynamic and ecological habitat suitability models across three Yangtze River locations: Yichang, Jianli, and Daijiazhou. Collected during 2019-2021, the dataset includes synchronized measurements of hydrodynamic parameters (water depth and current velocity) and biological biomass (fish, macro-invertebrates, and hygrophytes) from coordinated field surveys. The hydrodynamic component contains 12 sampling points with paired field measurements and model simulations, complete with relative error calculations for model validation. The ecological component comprises 190 sampling points with detailed biomass measurements across three trophic levels. This unique dataset enables coupled analysis of physical habitat characteristics and biological responses, supporting the development and verification of integrated eco-hydraulic models. The data are particularly valuable for environmental flow assessments, habitat restoration planning, and sustainable river management in large fluvial systems.
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Data Collection Details Sampling Locations and Periods Yichang Sample: May 2020 Jianli Sample: April 2019 Daijiazhou Sample: April 2021 Geographic Coverage Data include geographic coordinates in different coordinate systems: Yichang and Daijiazhou: Projected coordinate system (units in meters) Jianli: Geographic coordinates (decimal degrees) File Structure File 1: Habitat Suitability Data File Name: Verification data of habitat suitability model.xlsx Worksheets Yichang Sample (May 2020) Jianli Sample (April 2019) Daijiazhou Sample (April 2021) Data Columns Description - Habitat Suitability Each worksheet contains three parallel data structures for different biological components: Fish Data (Columns A-D) No: Sampling point identifier X-axis: Coordinate values Y-axis: Coordinate values Fish biomass: Measured in individuals Macro-invertebrates Data (Columns E-H) No: Sampling point identifier X-axis: Coordinate values Y-axis: Coordinate values Macro-invertebrates biomass: Measured in grams per square meter (g/m²) Hygrophytes Data (Columns I-L) No: Sampling point identifier X-axis: Coordinate values Y-axis: Coordinate values Hygrophytes biomass: Measured in grams per square meter (g/m²) File 2: Hydrodynamic Model Data File Name: Verification data of hydrodynamic model.xlsx Worksheets Yichang Sample (May 2020) Jianli Sample (April 2019) Daijiazhou Sample (April 2021) Data Columns Description - Hydrodynamic Model Common Structure Across All Worksheets (Columns A-J) No: Sampling point identifier X-axis: Coordinate values (meters or decimal degrees) Y-axis: Coordinate values (meters or decimal degrees) Surveyed Water depth(m): Field-measured water depth Surveyed current speed (m/s): Field-measured flow velocity Simulated Water depth(m): Model-predicted water depth Simulated current speed (m/s): Model-predicted flow velocity Relative Error of depth: (Surveyed - Simulated) / Surveyed Relative Error of current speed: (Surveyed - Simulated) / Surveyed Averaged Relative Error: Mean of depth and velocity relative errors Data Characteristics Coordinate Systems Habitat Data: Uniform geographic coordinates (decimal degrees) Hydrodynamic Data: Yichang and Daijiazhou: Projected coordinate system (meters) Jianli: Geographic coordinates (decimal degrees) Measurement Units Hydrodynamic Parameters: Depth: meters (m) Current speed: meters per second (m/s) Errors: dimensionless ratios Biological Parameters: Fish: Individual counts Macro-invertebrates: g/m² Hygrophytes: g/m² Data Quality Notes Hydrodynamic data include both field measurements and model simulations Relative error calculations provide model performance metrics Some biological sampling points have zero biomass values, indicating absence
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