Dataset of Hydroacoustic and Net Sampling from the Zahara-El Gastor Reservoir, Cádiz
This dataset includes vertical and horizontal hydroacoustic data and net sampling data to assess fish density distribution in the Zahara-El Gastor Reservoir, Cadiz, Spain. Surveys were conducted with a Simrad EK60 echosounder equipped with dual ES200-7C split-beam transducers, mounted on a stainless...
| Autores: | , , , , , |
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| Tipo de recurso: | conjunto de datos |
| Fecha de publicación: | 2025 |
| País: | España |
| Institución: | Universidad de Sevilla (US) |
| Repositorio: | idUS. Depósito de Investigación de la Universidad de Sevilla |
| OAI Identifier: | oai:idus.us.es:11441/177316 |
| Acceso en línea: | https://hdl.handle.net/11441/177316 https://doi.org/10.12795/11441/177316 |
| Access Level: | acceso abierto |
| Palabra clave: | Hydroacoustics Mediterranean Reservoirs Fish Monitoring Net Sampling Hidroacústica Embalses mediterráneos Monitoreo de peces Muestreo con redes |
| Sumario: | This dataset includes vertical and horizontal hydroacoustic data and net sampling data to assess fish density distribution in the Zahara-El Gastor Reservoir, Cadiz, Spain. Surveys were conducted with a Simrad EK60 echosounder equipped with dual ES200-7C split-beam transducers, mounted on a stainless-steel frame to simultaneously insonify surface and deep layers. Data were analyzed using Sonar5-Pro with single echo detection (vertical) and track-based echo counting (horizontal), after manual noise removal. Fish density (ind·10⁻³ m⁻³) was estimated for surface (0–2 m), midwater (2–20 m), and profundal (>20 m) strata. Gillnet sampling was used to determine species composition and community structure, employing a standardized effort with a CEN multi-mesh gillnet and two trammel nets (surface and bottom). Captured fish were identified to species level, and total length and weight were recorded. Hydroacoustic and gillnet data were collected simultaneously at each season (winter, spring, summer, and autumn) and across three reservoir áreas(dam, central, and riverine) in 2021. |
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