Browsing by Author "Haugen, Thrond Oddvar"

Area use and movement patterns of wild and escaped farmed Atlantic salmon before and during spawning in a large Norwegian river

Moe, Karina; Næsje, Tor; Haugen, Thrond Oddvar; Ulvan, Eva Marita; Aronsen, Tonje; Sandnes, Tomas; Thorstad, Eva Bonsak (Journal article; Peer reviewed, 2016)

Behavioral study of coexisting populations of anadromous brown trout and arctic char that overwinter in a subarctic lake

Monsen, Geir-Johnny (Master thesis, 2019)

This was an acoustic telemetry study on winter ecology and migratory behavior of anadromous brown trout (salmo trutta) and arctic char (salvelinus alpinus). The two species are coexisting in a subarctic lake of northern ...

Effects from environmental factors and individual characters on activity and depth use in a Northern pike (Esox lucius) population subjected to recreational fishing : an acoustic telemetry study

Amalie, Haugen (Master thesis, 2018)

Northern pike (Esox lucius) is a common top- predator in freshwater systems all over the Northern Hemisphere. For centuries it has been a popular target for recreational anglers. In many freshwater ecosystems, recreational ...

Effects of low frequency acoustic pulses on startle behaviour and EOD activity in elephantnose fish (Gnathonemus petersii)

Karlsen, Hans Christian Sørnes (Master thesis, 2016-11-21)

The sensory system initiating C-response and electric organ discharge (EOD) response in the hearing specialist elephantnose fish was studied in an experimental swing chamber set-up. The swing chamber is specially designed ...

Evaluering av fysiske tiltak og miljøeffekter på yngeltetthet hos sjøørret (Salmo trutta) i Verdalsvassdragets sidebekker

Richenberg, Hanne Marie (Master thesis, 2019)

Vandringshindre og forringelse av habitat oppstår ofte i forbindelse med utbygging av infrastruktur og aktivt jordbruk. Dette kan føre til uegnet habitat for sjøørreten (Salmo trutta), eller at muligheten til å fullføre ...

Field surveying of marine recreational fisheries in Norway using a novel spatial sampling frame reveals striking under-coverage of alternative sampling frames

Vølstad, Jon Helge; Christman, Mary C.; Ferter, Keno; Kleiven, Alf Ring; Otterå, Håkon Magne; Aas, Øystein; Arlinghaus, Robert; Borch, Trude; Colman, Jonathan Edward; Hartill, Bruce; Haugen, Thrond Oddvar; Hyder, Kieran; Lyle, Jeremy; Ohldieck, Martin Junker; Skov, Christian; Strehlow, Harry Vincent; van Voorhees, Dave; Weltersbach, Marc Simon; Weber, Edward D. (Peer reviewed; Journal article, 2019)

Fiske i elv, sjø og vann - en undersøkelse av fiskere i Lakselva, Femund-Engerdal og Oslofjorden med fokus på motivasjon og holdninger til fang og slipp-fiske.

Engen Giæver, Stian (Master thesis, 2017)

Fritids- og sportsfiske er i dag en rekreasjonsaktivitet hvor opplevelser, personlig utvikling og mestring står i sentrum for mange. Og fiskerne spesialiseres i forhold til blant annet utstyrsbruk og preferanser i fisket. ...

Genetic differences between wild and hatchery-bred brown trout (Salmo trutta L.) in single nucleotide polymorphisms linked to selective traits

Linløkken, Arne; Haugen, Thrond Oddvar; Kent, Matthew Peter; Lien, Sigbjørn (Journal article; Peer reviewed, 2017)

Genetic differentiation and demographics of brown trout (Salmo trutta) in tributaries of a sub-arctic watercourse affected by fragmentation and stocking

Lindgren, Vetle Schwensen (Master thesis, 2019)

The Pasvik river in north-eastern Norway harbours the only piscivorous brown trout (Salmo trutta) population in Finnmark County. Throughout the river, seven hydroelectric power dams were constructed between 1951 and 1978. ...

Ghost fishing : the spatial extent of gear loss and effects on marine animal life along the Norwegian coast

Løset, Ingrid Disch (Master thesis, 2019)

Tapte fiskeredskaper er en av de større bidragsyterne til verdens marine forsøplingsproblemer og de er blitt anerkjent som en kilde til alvorlige biologiske og sosio-økonomiske problemer over hele verden. Moderne fiskeutstyr ...

Increased precision of growth data gained by reading multiple scales from each individual of Atlantic salmon (Salmo salar)

Haraldstad, Tormod; Haugen, Thrond Oddvar; Borgstrøm, Reidar; Jonsson, Bror (Journal article; Peer reviewed, 2016)

The precision of growth estimates based on fish scales often remains uncertain because of withinindividual variation in scale size and scale patterns, and also due to measurement errors. Based on scale readings of Atlantic ...

Lesser sandeel (Ammodytes marinus) in the Tana river delta : temporal variation in abundance, habitat use and demography

Sevedzem, Veronica Nguka (Master thesis, 2019)

Lesser sandeel (Ammodytes marinus, Raitt, 1934, sandeel for short) is a keystone species of the Barents Sea ecosystem. However, little is known about the distribution of this species in the Tana fjord or Tana river delta ...

Parallelism in thermal growth response in otoliths and scales of brown trout (Salmo trutta L.) from alpine lakes independent of genetic background

Thaulow, Jens; Haugen, Thrond Oddvar; Borgstrøm, Reidar (Journal article; Peer reviewed, 2017)

Reconstruction of a pool-and-weir fishway to a vertical slot hybrid fishway in the inland river Glomma : effects on upstream migration of European grayling (Thymallus thymallus) and brown trout (Salmo trutta)

Holter, Tobias Houge (Master thesis, 2017)

Det er godt dokumentert at installasjoner i vassdrag kan ha store negative konsekvenser på ulike fiskearter og deres habitater. Demninger kan blokkere og forsinke migrasjon, samt endre den romlige fordeling av individer. ...

Sea trout (Salmo trutta) area use and harvest selection: different traits lead to different fates

Nordgård, Ida Kessel (Master thesis, 2016)

The sea trout (Salmo trutta) is a popular target for recreational fishing along the coast. Harvest selection is known to often fish out large individuals in a pop- ulation, selecting for small size and early maturation in ...

Sea trout in Inner Oslofjorden : population biology, marine recreational fishing and spatial variation in fishing intensity

Vakurov, Mikhail (Master thesis, 2019)

Recreational fishing has been known since XV century. Nowadays, Arlinghaus and Cooke (2009) estimate, that around 10,6% of the population in studied countries participate in recreational fishing. However, marine recreational ...

Small larvae in large rivers: observations on downstream movement of European grayling Thymallus thymallus during early life stages

van Leeuwen, Casper; Dokk, Torkil; Haugen, Thrond Oddvar; Kiffney, P.M.; Museth, Jon (Journal article; Peer reviewed, 2017)

Behaviour of early life stages of the salmonid European grayling Thymallus thymallus was investigated by assessing the timing of larval downstream movement from spawning areas, the depth at which larvae moved and the ...