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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PDF
1MB |
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 | ||||||||||
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Title: | Flow preferences of upstream migrating Atlantic salmon (Salmo salar) | ||||||||||
Series Name/Journal: | Acta Universitatis Agriculturae Sueciae | ||||||||||
Year of publishing : | 2016 | ||||||||||
Depositing date: | 16 March 2016 | ||||||||||
Number: | 2016:6 | ||||||||||
Number of Pages: | 55 | ||||||||||
Papers/manuscripts: |
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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: | 10 Sep 2020 13:41 |
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