Cristin-resultat-ID: 1907160
Sist endret: 30. april 2021, 11:22
NVI-rapporteringsår: 2021
Resultat
Vitenskapelig artikkel
2021

Validation of a Swimming Direction Model for the Downstream Migration of Atlantic Salmon Smolts

Bidragsytere:
  • Marcell Szabo-Meszaros
  • Ana T. Silva
  • Kim Magnus Bærum
  • Henrik Baktoft
  • Knut Alfredsen
  • Richard David Hedger
  • mfl.

Tidsskrift

Water
ISSN 2073-4441
e-ISSN 2073-4441
NVI-nivå 1

Om resultatet

Vitenskapelig artikkel
Publiseringsår: 2021
Publisert online: 2021
Volum: 13
Hefte: 9
Open Access

Importkilder

Scopus-ID: 2-s2.0-85105816443

Beskrivelse Beskrivelse

Tittel

Validation of a Swimming Direction Model for the Downstream Migration of Atlantic Salmon Smolts

Sammendrag

Fish swimming performance is strongly influenced by flow hydrodynamics, but little is known about the relation between fine-scale fish movements and hydrodynamics based on in-situ investigations. In the presented study, we validated the etho-hydraulic fish swimming direction model presented in the River Mandal from Southern Norway, using similar behavioral and hydraulic data on salmon smolts from the River Orkla in Central Norway. The re-parametrized model explained the variation of the swimming direction of fish in the Orkla system in same degree as the original model performed in the Mandal system (R2: 84% in both cases). The transferability of the model when using it from one river to predict swimming direction in the other river was lower (R2: 21% and 26%), but nevertheless relatively high given that the two localities differed in hydraulic conditions. The analyses thus provide support for the fact that the identified hydraulic parameters and their interaction affected smolt behavior in a similar way at the two sites, but that local parametrization of the base model is required. The developed etho-hydraulic models can provide important insights into fish behavior and fish migration trajectories and can be developed into prediction models important for the future development of behavioral downstream migration solutions.

Bidragsytere

Marcell Szabo-Meszaros

  • Tilknyttet:
    Forfatter
    ved Institutt for bygg- og miljøteknikk ved Norges teknisk-naturvitenskapelige universitet

Ana T. Silva

  • Tilknyttet:
    Forfatter
    ved NINA akvatisk naturmangfold ved Norsk institutt for naturforskning

Kim Magnus Bærum

  • Tilknyttet:
    Forfatter
    ved NINA Lillehammer ved Norsk institutt for naturforskning

Henrik Baktoft

  • Tilknyttet:
    Forfatter
    ved Danmarks Tekniske Universitet

Knut Alfredsen

  • Tilknyttet:
    Forfatter
    ved Institutt for bygg- og miljøteknikk ved Norges teknisk-naturvitenskapelige universitet
1 - 5 av 11 | Neste | Siste »