Blar i NTNU Open på forfatter "Ulvan, Eva Marita"
-
Arctic char - friend or foe?: Climate driven seasonal variation in competitive impact of Arcticchar (Salvelinus alpinus L) on brown trout (Salmo truttaence L)
Ulvan, Eva Marita (Master thesis, 2010)Here I test for climate driven seasonal effects on competition in lakes using brown trout (Salmo trutta L.) and Arctic char (Salvelinus alpinus L.) as model organisms. Winter and summer brown trout consumption rates were ... -
The effect of surveillance fishing on migration distance of Atlantic Salmon during the spawning period
Munkeby, Johan; Davidsen, Jan Grimsrud; Havn, Torgeir Børresen; Ulvan, Eva Marita; Næsje, Tor; Karlsen, Dag H.; Solem, Øyvind; Lennox, Robert J. (Peer reviewed; Journal article, 2024)Objective Surveillance fishing surveys can be performed to estimate the proportion of farmed salmon represented in the spawning stock of native Atlantic Salmon Salmo salar populations. These surveys take place after the ... -
Partikkelutslipp fra skiferindustri i Drivavassdraget. Undersøkelser av påvirkning på fisk og bunndyr.
Ulvan, Eva Marita; Solem, Øyvind; Kvellestad, Agnar; Bongard, Terje (NINA rapport;1040, Research report, 2014)Drivavassdraget har bestander av sjøvandrende laksefisk på en om lag 85 kilometer lang elvestrekning mellom Sunndalsøra og absolutt vandringshinder 580 meter over havet i Drivdalen. Etter at lakseparasitten Gyrodactylus ... -
Population consequences of climate change through effects on functional traits of lentic brown trout in the sub-Arctic
Bærum, Kim Magnus; Finstad, Anders Gravbrøt; Ulvan, Eva Marita; Haugen, Thrond O. (Peer reviewed; Journal article, 2021)Climate-induced plasticity in functional traits has received recent attention due to the immense importance phenotypic variation plays in population level responses. Here, we explore the efect of diferent climate-change ...