Fish Swimming in Turbulent Waters

Fish Swimming in Turbulent Waters

Author: Hubert Chanson

Publisher: CRC Press

ISBN: 9781000049916

Category: Technology & Engineering

Page: 182

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Low-level river crossings, including culverts, are important for delivering a range of valuable socioeconomic services, including transportation and hydrological control. These structures are also known to have negative impacts on freshwater river system morphology and ecology, including the blockage of upstream fish passage, particularly small-body-mass fish species. Given the enormous environmental problems created by road crossings, new hydraulic engineering guidelines are proposed for fish-friendly multi-cell box culvert designs. The focus of these guidelines is on smooth box culverts without appurtenance, with a novel approach based upon three basic concepts: (I) the culvert design is optimized for fish passage for small to medium water discharges, and for flood capacity for larger discharges, (II) low-velocity zones are provided along the wetted perimeter in the culvert barrel, and quantified in terms of a fraction of the wetted flow area where the local longitudinal velocity is less than a characteristic fish speed linked to swimming performances of targeted fish species, and (III) the culvert barrel is smooth, without any other form of boundary treatment and appurtenance. The present monograph develops a number of practical considerations, in particular relevant to box culvert operations for less-than-design discharges. It is argued that upstream fish passage capabilities would imply a revised approach to maintenance, in part linked to the targeted fish species. This reference work is authored for civil and environmental engineers, as well as biology and ecology scientists interested in culvert design. While the book is aimed to professionals, the material is also lectured in postgraduate courses and in professional short courses.
Fish Swimming in Turbulent Waters
Language: en
Pages: 182
Authors: Hubert Chanson, Xinqian Leng
Categories: Technology & Engineering
Type: BOOK - Published: 2020-09-13 - Publisher: CRC Press

Low-level river crossings, including culverts, are important for delivering a range of valuable socioeconomic services, including transportation and hydrological control. These structures are also known to have negative impacts on freshwater river system morphology and ecology, including the blockage of upstream fish passage, particularly small-body-mass fish species. Given the enormous
Fish Swimming in Turbulent Waters
Language: en
Pages: 202
Authors: Hubert Chanson
Categories: Culverts
Type: BOOK - Published: 2020 - Publisher:

Low-level river crossings, including culverts, are important for delivering a range of valuable socioeconomic services, including transportation and hydrological control. These structures are also known to have negative impacts on freshwater river system morphology and ecology, including the blockage of upstream fish passage, particularly small-body-mass fish species. Given the enormous
The Evolutionary Basis of Strabismus and Nystagmus in Children
Language: en
Pages: 246
Authors: Michael C. Brodsky
Categories: Medical
Type: BOOK - Published: 2021-05-12 - Publisher: Springer Nature

This text is a comprehensive collection and discussion of scientific essays that define the pathogenesis of common forms of pediatric strabismus and nystagmus in terms of their common evolutionary mechanisms. The goal of this book is to assemble these essays, to provide a definitive source for current clinicians to use
Kings of the Yukon
Language: en
Pages: 288
Authors: Adam Weymouth
Categories: Travel
Type: BOOK - Published: 2018-05-15 - Publisher: Penguin UK

'Enthralling' Luke Jennings, author of Blood Knots 'Stirring and heartbreaking' David Owen, author of Where the Water Goes A captivating, lyrical account of an epic voyage by canoe down the Yukon River. The Yukon River is almost 2,000 miles long, flowing through Canada and Alaska to the Bering Sea. Setting
Killers in the Water - The New Super Sharks Terrorising The World's Oceans
Language: en
Pages: 320
Authors: Sue Blackhall
Categories: Nature
Type: BOOK - Published: 2012-07-27 - Publisher: Metro Publishing

Sharks are intriguing and beautiful creatures - but they can also be deadly. As we humans have explored the world's oceans and exploited them for tourism and recreation, we have found ourselves coming into contact with more and more sharks. And the outcome can be fatal. From the Seychelles to