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The Turbulent-Eddies-Significance (TESSA) on a fish´s perception

Subject Area Geotechnics, Hydraulic Engineering
Sensory and Behavioural Biology
Hydrogeology, Hydrology, Limnology, Urban Water Management, Water Chemistry, Integrated Water Resources Management
Term since 2024
Project identifier Deutsche Forschungsgemeinschaft (DFG) - Project number 549136251
 
How does a fish perceive turbulent hydraulic environments? How can we, as "observers", perceive the measured hydraulic conditions from the perspective of a fish? Answering these two questions is the main objective of this research proposal (TESSA). To answer the first question, we need to determine whether eddies have a significant effect on fish perception and behavior. The second objective is to develop a method that allows the perception of turbulent flow conditions from a fish's point of view. Elucidating these issues is essential to determine the ethohydraulic significance of turbulence in river streams. Measures to restore natural migration corridors and habitats in rivers, with the goal of good ecological stream condition, are often shown to be inadequate. Currently, planning principles only consider commonly used flow criteria because the relationships between the effects of eddies on fish behavior are not sufficiently understood. A better comprehension of these interrelationships supports the optimization of ecologically oriented measures.
DFG Programme Research Grants
 
 

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