Blar i Department of Biological Sciences på emneord "Norge"
Viser treff 1-16 av 16
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Ballan wrasse (Labrus bergylta) predation on hatchery reared scallop (Pecten maximus) spat
(Master thesis, 2005)Sea ranching of the great scallop (Pecten maximus) may have a high potential for future aquaculture in Norway. The edible crab (Cancer pagurus) and starfish (Asterias rubens) have been identified as the major predators, ... -
Cadmium in Brown Crab Cancer pagurus in Norwegian Waters
(Doctoral thesis, 2018-05-23)The Brown crab Cancer pagurus is appreciated as seafood and its fishery is of importance in several European countries. However, findings of high levels of cadmium have increased concern about food safety, and spatial ... -
Climate change and the effect of darker coastal water on NCW euphotic zone properties - A theoretical study
(Master thesis, 2016-11-21)The Norwegian Coastal Water (NCW) derives from an extensive outflow of freshwater from the Baltic Sea and river runoff from the Norwegian coast, making the water less saline than the North Atlantic Water (NAW). Freshwater ... -
The effect of low temperatures and photoperiods on growth in Atlantic salmon (Salmo salar)
(Master thesis, 2015-07-01)This thesis examines the growth response of Atlantic salmon post-smolt (Salmo salar) in a factorial experiment with three temperatures and two light regimes. The aim of this study was to investigate under laboratory ... -
Effects of gas supersaturation on migrating Atlantic salmon smolt (Salmo salar) in Evangervatnet
(Master thesis, 2016-11-21)Total dissolved gas supersaturation (TDGS) downstream of power plants may cause harmful effects on the fauna in many rivers. The harmful effects of TDGS are known as gas bubble disease (GBD). TDGS has been proposed as one ... -
Fangst av krill og torsk (Gadus morhua) ved bruk av lys; effekt av lyskildens egenskaper.
(Master thesis, 2018-06-26)Krillens adferd rundt lys er lite studert i felt, men er viktig med tanke på utviklingen innen teinefiske etter fisk (Torsk, Gadus morhua), da det brukes lys for å tiltrekke levende bytte og motivere fisken til å gå i ... -
Fish protein hydrolysates based on Atlantic salmon by-products. Enzyme cost-efficiency and characterization of sensory, surface-active and nutritional properties
(Doctoral thesis, 2016-06-21)The world fisheries and fish farming industries generate large amounts of by-products after the primary processing of fish to edible products. In Norway alone, this accounted for almost 900,000 tons in 2014. Based on present ... -
Isolation and Characterisation of Shiga Toxin-Producing Escherichia Coli from Norwegian Bivalves
(Master thesis, 2017-06-23)Only few studies concerning Shiga toxin-producing E. coli (STEC) detection in coastal environments and bivalves have been reported and there have been no reported outbreaks by STEC from bivalves in the world. The aim of ... -
Mesopelagic sound scattering layers and possible explanations for their diel variations in Bjørnafjorden, western Norway
(Master thesis, 2018-12-19)This thesis investigates the diel variations in mesopelagic acoustic scattering layers in Bjørnafjorden (60° 5' N 5° 23'E), western Norway. The main objective was to map these scattering layers and investigate possible ... -
Phenology and Spatial Dynamics of Cacopsylla melanoneura (Homoptera:Psyllidae) in Western Norway, an Insect Vector for Apple Proliferation
(Master thesis, 2017-06-21)In the last decade, the plant disease apple proliferation has caused problems for Norwegian fruit farmers, resulting in smaller and un-tasty apples, rendering them unsellable. The disease is caused by the phytoplasma ... -
Population genetics of Saccharina latissima (sugar kelp) in Norway
(Master thesis, 2019-05-01)The interest in cultivating sugar kelp, Saccharina latissima in Norway is increasing and therefore knowledge about the population genetics of this species is important. A total of 345 samples were genotyped from sixteen ... -
Predicting and assessing climate-change impacts on the population dynamics of alpine and lowland forbs
(Doctoral thesis, 2015-05-29)Background and aims: Global climate change is already affecting plant species worldwide. The global rise in temperatures and regional changes in precipitation are predicted to continue throughout the century. Therefore, ... -
Recreational fishing for Nephrops in Hordaland, Norway - catches and potential mercury intake
(Master thesis, 2018-06-26)Few studies provide information about recreational fishing in Norway. As recreational fishing often occurs in areas close to high-density surroundings, possibly affected by environmental pollutants, it is important to ... -
Studying the waste recycling potential of naturally occurring polychaetes on benthic trays under a Norwegian fish farm
(Master thesis, 2018-06-26)With an increasing salmon industry comes an increasing amount of waste released into the environment, impacting benthic environments in particular. This study investigated the potential of utilizing naturally occurring ... -
Survival of Salmonid Alphavirus in seawater under different physical conditions
(Master thesis, 2014-08-06)Pancreas disease (PD) is an infectious disease caused by Salmonid alphavirus (SAV), which infects Atlantic salmon, Salmo salar L., and rainbow trout, Oncorhynchus mykiss (Walbaum). PD causes substantial economical losses ...