Abstract
The hydraulic design of nature-like unstructured block ramps is based on empirical approaches hampering the proof of passable migration corridors for fish. The research project “MigRamp” aims at identifying and quantifying migration corridors of upstream migrating fish on nature-like unstructured block ramps by linking fish trajectories, bed topography, and local flow field. For this purpose, combined fish-biological and hydraulic investigations were carried out on an existing nature-like unstructured block ramp in the field and laboratory tests. This paper describes the field measurements and reports preliminary results of an identified migration trajectory of a brown trout and its correlation with hydraulic parameters.
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Acknowledgements
We acknowledge the support of the Leineverband (Northeim, Germany) and everyone who contributed to the success of the ramp scan from TU Braunschweig, Federal Agency for Technical Relief (local group, Einbeck, Germany), and the Fischereiverein Einbeck e.V. The “MigRamp” project is financially supported by the Deutsche Bundesstiftung Umwelt (DBU), Germany.
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Eikenberg, R., Aberle, J. (2024). Fish Observations and Hydraulic Measurements on a Nature-Like Unstructured Block Ramp. In: Kalinowska, M.B., Mrokowska, M.M., Rowiński, P.M. (eds) Advances in Hydraulic Research. ISH 2023. GeoPlanet: Earth and Planetary Sciences. Springer, Cham. https://doi.org/10.1007/978-3-031-56093-4_7
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DOI: https://doi.org/10.1007/978-3-031-56093-4_7
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