IAHR, founded in 1935, is a worldwide independent member-based organisation of engineers and water specialists working in fields related to the hydro-environmental sciences and their practical application. Activities range from river and maritime hydraulics to water resources development and eco-hydraulics, through to ice engineering, hydroinformatics, and hydraulic machinery.
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You are here : eLibrary : IAHR World Congress Proceedings : 36th Congress - The Hague (2015) ALL CONTENT : Sediment management and morphodynamics : Influence of channel erosion on fish habitat utilization
Influence of channel erosion on fish habitat utilization
Rivers provide essential habitat for aquatic organisms including fish. The interactions between erosion, sedimentation,
and morphological changes may negatively affect the availability of habitat in these ecological systems. Over the past
few decades, there have been attempts to predict the influence of morphological and hydraulic variables on available
habitat. The main focus of this study is to investigate the habitat availability for young-of-year Northern Pike (Esox
lucius), an important game fish, in a meandering clay-bed creek in the city of Ottawa, Canada. Suitability curves for this
species were firstly established based on the bed substrate and hydraulic habitat variables. A fuzzy-based habitat
suitability model, employing suitability indices of habitat variables, was also developed. The results of the habitat
suitability model were then compared to the distribution of fish in the creek assessed using backpack electrofishing. The
results predicted by the fuzzy-based habitat suitability model, were in good agreement with the fish sampling results.
Moreover, it was also shown that the bed substrate played an important role in predicting utilization of the available
habitat for young-of-the-year and juvenile Northern Pike.
File Size : 2,876,219 bytes
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Chapter : IAHR World Congress Proceedings
Category : 36th Congress - The Hague (2015) ALL CONTENT
Article : Sediment management and morphodynamics
Date Published : 12/08/2015
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