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Flow preferences of upstream migrating Atlantic salmon (Salmo salar)

Lindberg, Dan-Erik (2016). Flow preferences of upstream migrating Atlantic salmon (Salmo salar). Diss. (sammanfattning/summary) Umeå : Sveriges lantbruksuniv., Acta Universitatis agriculturae Sueciae, 1652-6880 ; 2016:6
ISBN 978-91-576-8514-8
eISBN 978-91-576-8515-5
[Doctoral thesis]

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Abstract

On their way from the sea to their spawning grounds in rivers, Atlantic salmon are often delayed or hindered by dams or other obstructions. Building a fishway can save a population that would otherwise go extinct. But even when there is a fishway present, sometimes the fish will have difficulties finding the entrance or navigating through the fishway. Understanding fish preferences during their upstream migration can help us improve fishway design so we can help the fish move upstream.

The main goal of my studies was to find hydrodynamic preferences of salmon. We were able to show a preference for high turbulence intensity (I ~ 0.7). We also found a preference for lower water velocity. In my last study, I found most salmon near the highest available water velocity, which in light of previous results was interpreted as the salmon seeking out the turbulent areas in the boundary layer of the high velocity jet in the center of the river.

There were several indications that Atlantic salmon prefer to save energy, and that they are able to utilize turbulent structures to save energy during their active migration. However, much of the proof was circumstantial and requires further investigation. As a main source of error, the instruments used to measure hydrodynamics were not precise enough. More focus should be put on developing better instruments, for example the newly invented artificial lateral lines.

Authors/Creators:Lindberg, Dan-Erik
Title:Flow preferences of upstream migrating Atlantic salmon (Salmo salar)
Series/Journal:Acta Universitatis agriculturae Sueciae (1652-6880)
Year of publishing :2016
Depositing date:16 March 2016
Volume:2016:6
Number of Pages:55
Papers/manuscripts:
NumberReferences
IAndersson A. G., Lindberg D-E., Lindmark E. M., Leonardsson K., Andreasson P., Lundqvist H., Lundström T. S. (2012). A numerical study of the location and function of the entrance of a fishway in a regulated river. Modelling and Simulation in Engineering 2012.
IILindberg D-E., Leonardsson K., Andersson A. G., Lundström T. S., Lundqvist H. (2013). Methods for locating the proper position of a planned fishway entrance near a hydropower tailrace. Limnologica 43(2013), 339- 347.
IIILindberg D-E., Lundqvist H., Leonardsson K. (2015). Path selection of Atlantic salmon (Salmo salar) migrating through a fishway. River Research and Applications (Accepted 2015-04-02).
IVLindberg D-E. (2015). Path selection of migrating Atlantic salmon (Salmo salar) along a river transect. (Submitted).
Place of Publication:Umeå
Publisher:Department of Wildlife, Fish, and Environmental Studies, Swedish University of Agricultural Sciences
ISBN for printed version:978-91-576-8514-8
ISBN for electronic version:978-91-576-8515-5
ISSN:1652-6880
Language:English
Publication Type:Doctoral thesis
Full Text Status:Public
Agris subject categories.:M Aquatic sciences and fisheries > M40 Aquatic ecology
Subjects:(A) Swedish standard research categories 2011 > 1 Natural sciences > 106 Biological Sciences (Medical to be 3 and Agricultural to be 4) > Ecology
(A) Swedish standard research categories 2011 > 1 Natural sciences > 106 Biological Sciences (Medical to be 3 and Agricultural to be 4) > Behavioural Sciences Biology
(A) Swedish standard research categories 2011 > 4 Agricultural Sciences > 401 Agricultural, Forestry and Fisheries > Fish and Aquacultural Science
Agrovoc terms:atlantic salmon, salmo salar, animal migration, smolts, behaviour, ecology, rivers, velocity
Keywords:Atlantic salmon, Salmo salar, migration, ecology, behavior, path selection
URN:NBN:urn:nbn:se:slu:epsilon-e-3323
Permanent URL:
http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-e-3323
ID Code:13182
Faculty:S - Faculty of Forest Sciences
Department:(S) > Dept. of Wildlife, Fish and Environmental Studies
Deposited By: Mr Dan-Erik Lindberg
Deposited On:17 Mar 2016 09:57
Metadata Last Modified:23 Mar 2016 09:03

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