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Author: C Katopodis
Publisher:
ISBN:
Category : Fishes
Languages : en
Pages : 550
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Book Description
Author: C Katopodis
Publisher:
ISBN:
Category : Fishes
Languages : en
Pages : 550
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Book Description
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 0
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The swim tunnel is analogous to the treadmill for running where fish hold position and swim at the same speed of water flowing through the tunnel, just as a runner on a treadmill holds position by running at the speed of the treadmill. [...] In Peake 2008, passage success was reported as a function of attempts by dividing the number of fish that are able to successfully swim the entire channel length by the number of the fish that entered the channel from the staging area (e.g. [...] The rotational velocity of the wheel is proportional to the average swimming speed of the fish. [...] The response time of the operator to the movements of the fish can be a serious source of error. [...] Electric shocks of different strengths were used to generate high burst speeds in the fish, the speed and duration of the burst was captured by an oscilloscope that recorded the response of an operator who rotated the wheel in the opposite direction of the burst.
Author: Larry A. Hunter
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Author:
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ISBN:
Category :
Languages : en
Pages : 0
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This document provides advice on the completeness of the database, the scientific validity and limitations of the analyses and the results and conclusions associated with the fish 2 Central and Arctic Region Swim Performance Curves swimming performance curves. [...] In an effort to improve the consistency of the data used in the analysis, certain datasets that held individual fish measurement data were reformatted by grouping the data in a manner that was similar to other grouped datasets collected from the literature. [...] The objective of dividing the database from one large group into smaller ones was to improve the R2 value and standard error of estimate for the swimming speed versus fatigue time regressions until the point was reached at which limitations of the dataset exceeded any additional gains. [...] Similarly, the "Trout Group" consisting of 65 of the 76 species had R2 values of 0.354 when swim speed was expressed in body lengths per second compared to 0.730 when swim speed was expressed as a function of the square root of body length or as the dimensionless speed (including gravity in square root of length). [...] In fluid mechanics, the Froude number is relevant where the weight of the fluid is an important force, and is used to determine the resistance of an object moving through water, and permits the comparison of objects of different sizes.
Author:
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ISBN:
Category :
Languages : en
Pages : 0
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The purpose of the meeting was to review a working paper that presented the results of analyses on fish swimming performance curves to determine; (1) if the database used for the analyses was complete; (2) the scientific validity of the analyses, results, and conclusions reached; and (3) the limitations of the study. [...] It was noted that in addition to the objectives outlined in the meeting Terms of Reference, participants would also endeavour to identify and evaluate the sources of uncertainty and the assumptions used in the analysis. [...] During their analyses, the authors tried various dimensionless parameters and presented the combination that best reduced the scatter in the graphical representation of the data as the model was refined. [...] Further investigation of the eel group led the authors to compare the swim speed-time regressions between the eel group and a subset of it, the Anguilliform group, using dimensionless analysis. [...] They also recommended the authors re-order (or re-label) the appendices in the Research Document so they appear in the order in which they are referred to in the text.
Author: Hubert Chanson
Publisher: CRC Press
ISBN: 1000049914
Category : Technology & Engineering
Languages : en
Pages : 203
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Book Description
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.
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 67
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Author: Vinay Chembolu
Publisher: Springer Nature
ISBN: 9819712270
Category :
Languages : en
Pages : 296
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Author: Monika B. Kalinowska
Publisher: Springer Nature
ISBN: 3031560930
Category :
Languages : en
Pages : 405
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Author: Kara Lauren Feilich
Publisher:
ISBN:
Category : Biomechanics
Languages : en
Pages : 412
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Book Description
