Blar i Brage NMBU på forfatter "Haugen, Thrond Oddvar"
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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 ... -
Short-term effects of a marine sanctuary on the local lobster population in the Oslo fjord, Norway
Vold, Mari (Master thesis, 2022)The European lobster (Homarus gammarus) population in Norway is over-fished and endangered, and marine protected areas (MPAs) are an increasingly utilized measure for protection of this species. Previous studies in Norway ... -
Should I stay or should I go? : geolocators reveal different winter home ranges and -activity patterns in sympatrically breeding razorbills (Alca torda)
Hestem, Magne Vegard Kjelgum (Master thesis, 2019)Annual migration between breeding- and wintering grounds is a common behavior that is found in a range of taxa, including many seabird-species such as alcids. Within-population-differences in migration strategies, including ... -
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 ... -
Smoltutvandring i Nidelva 2014-Utprøving av tiltak for nedvandrende smolt ved Rygene kraftverk
Haraldstad, Tormod; Guttrup, Jim; Haugen, Thrond Oddvar (Research report, 2014)Antall pre-smolt oppstrøms Rygene, 3546 (3083-4214), er lavere en hva en kunne forvente utfra antall oppvandrende gytefisk og egnet gyte- og oppvekstareal i elva. I tillegg estimeres et betydelig tap av smolt under ... -
Survival and life history differentiation in Sympatric European Grayling populations in Lesjaskogsvatnet
Giri, Khrishna (Master thesis, 2017)The present study entitled “Survival and life history differentiation in Sympatric European Grayling populations in Lesjaskogsvatnet” deals with individual growth trajectories and adult mortality differences among grayling ... -
Temporal development of macroinvertebrate communities and their responses to restoration measures in Bognelv, Norway
Bjørngaard, Rakel (Master thesis, 2020)Human activities drive degradation and biodiversity loss of freshwater rivers globally. One of the major threats to rivers are channelization, which straightens the river and eliminates the heterogenic habitats as opposed ... -
Vandringsatferd og dødelighet hos akustisk merket laksesmolt (Salmo salar) i Evangervatnet
Åsan, Espen (Master thesis, 2017)Den atlantiske laksen (Salmo salar) er en anadrom art som benytter ferskvann som oppvekststed før den smoltifiserer og starter utvandring mot sjøen. Under smoltutvandringen i Vossovassdraget våren 2015 ble det påvist stort ... -
Vandringsdynamikk og overlevelse hos ungfisk av sjøørret (Salmo trutta) i seks sidebekker til Verdalselva
Lund, Sivert Dahlen (Master thesis, 2020)Hos mange dyre- og fiskearter beveger individer seg mellom ulike habitater. Spredning av individer mellom naturtyper og geografisk atskilte leveområder kan ha stor betydning for populasjonsdynamikk og populasjonsstruktur, ... -
Vandringsmønster hjå laksesmolt frå Stryneelva og Eidselva i 2018
Haugen, Thrond Oddvar; Urke, Henning Andre; Kristensen, Torstein (MINA fagrapport;61, Report, 2019)A study of migration timing and marine migration behaviour of Atlantic salmon (Salmo salar) smolts/post-smolts was conducted using acoustic telemetry in the rivers Stryneelva and Eidselva and the adjacent fjord system ... -
Vandringsmønster og overleving hjå laksesmolt frå Bolstadelva og Vosso
Haugen, Thrond Oddvar; Ulvund, John Birger; Lunde, Rune; Kristensen, Torstein; Barlaup, Bjørn T.; Urke, Henning Andre (MINA fagrapport;32, Report, 2016)The River Vosso population of Atlantic salmon (Salmo salar) was strongly reduced over the course of a few years during late 1980s, and has not recovered since despite strong mitigating efforts. The ultimate reasons(s) for ... -
What affects migration and large-scale area use of brown trout (Salmo trutta) smolt? : an acoustic telemetry study from four Oslofjord populations
Gjerde, Karina (Master thesis, 2018)The brown trout (Salmo trutta) is one of the most studied fish species, due to its recreational and economic value. The smolt life stage, is however less studied. In this thesis, I used acoustic telemetry to increase ... -
What’s rocking in Bognelv? : a case study in hydromorphological conditions before, during and after restoration of a channelized river by studying tracer rocks and aerial photos
Johansen, Maja Konstanse Bernhoff (Master thesis, 2020)From 1930-1990 the river Bognelv in Troms-Finnmark County was strongly affected by technical intervention related to flood security which led to interruption of bed material transfer, and dramatical declination of salmonid ... -
Ørekyt (Phoxinus phoxinus) i Øvre Heimdalsvatn : bestandsdynamikk og habitatbruk etter om lag femti års sameksistens med ørret (Salmo trutta)
Liberg, Mathea Sætre (Master thesis, 2018)I den subalpine innsjøen Øvre Heimdalsvatn var ørret (Salmo trutta) opprinnelig eneste fiskeart, men i 1969 ble ørekyt (Phoxinus phoxinus) oppdaget. Det har vært gjennomført omfattende studier på ørret i Øvre Heimdalsvatn ...