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Spatio-temporal analysis of fish behaviour: lessons learnt to stimulate fish passage
Mouton, A.M.; Verhelst, P.; Vergeynst, J.; Buysse, D.; Pauwels, I.; De Charleroy, D.; Coeck, J. (2016). Spatio-temporal analysis of fish behaviour: lessons learnt to stimulate fish passage, in: Webb, J.A. et al. (Ed.) Proceedings of the 11th International Symposium on Ecohydraulics. Melbourne, Australia, 7-12 February 2016. pp. 4

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Documenttype: Congresbijdrage

    Marien/Kust; Brak water; Zoet water

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    Obstacles like weirs, watermills and locks are barriers for migratory fish. The fact that specific fish species cannot reach their optimal spawning habitat can have severe consequences for the survival of these species. While numerous fish passage types have been designed to solve this problem, these are sometimes not efficient. More insight into fish behavior is needed to improve fish pass efficiency, and acoustic telemetry allows such detailed observation of spatio-temporal migration patterns. We present novel findings on fish behavior at anthropogenic structures based on acoustic telemetry. The impact of several constructions like sluices, weirs, pumping stations and small-scale hydropower plants will be assessed and potential solutions to enhance fish migration at these structures will be discussed. This approach will identify crucial information needs for effective fish passage management and reveal a range of opportunities for fish passage research.

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