Browsing Master's theses in Coastal Ecology by Issue Date
Now showing items 21-40 of 50
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Trying to Find a Correlation Between Spawning- and Nursery Grounds in Different Regions of Norway.
(Master thesis, 2022)På grunn av overfiske av kommersielle viktige fiskearter, har det blitt enda viktigere å opprettholde bærekraftige bestander. Det holder ikke å bare regulere mengden fisk fanget av fiskerier, å beskytte områder som er ... -
Assessing fish community dynamics in a Norwegian no-take marine reserve compared to a harvested area
(Master thesis, 2022)An ecosystem's ability to respond and maintain key functions during environmental change are largely determined by its biodiversity. As human activities continue to alter the composition of biological communities at all ... -
Ghost fishing in Raet National Park: estimating the impact on Atlantic cod and three species of wrasse
(Master thesis, 2022)Loss of fishing gear have been a problem for as long as fishing has occurred in the ocean. As modern fishing gear are made up of mostly synthetic materials, it will stay intact and continue to fish for a long time after ... -
The life-saving effect of biodegradable cotton thread in lost fishing traps: from a cleanup-project in Raet National Park, Norway
(Master thesis, 2022)The fishing gear used today is primarily made of synthetic materials, which gives the gear a long breakdown time. This means that Abandoned, Lost, and Discarded Fishing Gear (ALDFG) can continue fishing for a long time in ... -
Impacts of ghost fishing on European lobster (Homarus gammarus) and brown crab (Cancer pagurus) in Raet national park, Norway
(Master thesis, 2022)Lost fishing gear pose a threat to marine life in large parts of the world. Fishing gear have the potential to continue to fish for a long time after it has been lost, referred to as “ghost fishing”, an issue which has ... -
Fishing for more data: Exploratory stock assessment of the data-limited brown crab (Cancer pagurus) stock in Norway
(Master thesis, 2022)Formal stock assessment is a key step in managing fisheries sustainably and preventing overexploitation (Hilborn, 2011). However, the majority of the world’s exploited stocks are considered data-limited and lack formal ... -
Assessing impact of fishing on growth of corkwing wrasse (Symphodus melops) and goldsinny wrasse (Ctenolabrus rupestris)
(Master thesis, 2022)Corkwing wrasse (Symphodus melops) and goldsinny wrasse (Ctenolabrus rupestris) are two temperate wrasse (Labridae) species that are targeted by commercial fishery due to their ability to reduce sea-lice infections. The ... -
Identifying protists along the Agder coastline using Illumina sequencing
(Master thesis, 2022)Environmental quality, sustainability and functioning of marine ecosystems are closely linked to species richness and diversity. Microalgae play key roles in coastal ecosystems contributing significantly to carbon flux ... -
The use of bioacoustics to assess the impact of environmental parameters on male pool frog (Phelophylax lessonae) call characteristics
(Master thesis, 2022)The purpose of this investigation was to use current methods of bioacoustic analysis to determine whether the environmental parameters of water temperature and background noise significantly affect the characteristics of ... -
Sea lice feeding behavior of wild and hatchery lumpfish (Cyclopterus lumpus) under hatchery conditions.
(Master thesis, 2022)In 2014 Norway contributed 1.2 million tons of the world production of farmed salmon. Norway is the world’s largest producer of farmed salmon, and the species is among the top five species, quantity consumed, in the major ... -
Homing ability of goldsinny wrasse (Ctenolabrus rupestris) and corkwing wrasse (Symphodus melops)
(Master thesis, 2022)Wrasse family (Labridae) are widely used as a cleaner fish in salmonid aquaculture to remove the sea lice infestation. Goldsinny wrasse and corkwing wrasse are the most used wrasse fishes in the aquaculture industry in ... -
Feltstudie av makroalgevegetasjonen på Flekkerøy, Agder
(Master thesis, 2022)Makroalger spiller en sentral rolle i kysthabitater, på grunn av deres funksjon som økosystemingeniører, konkurrenter og primærprodusenter. De danner svært produktive habitater for forskjellige samfunn, og øker den ... -
Monitoring Attempted Eradication of the Invasive Species Northern Pike (Esox lucius), and Re-Establishment of Three-Spined Stickleback (Gasterosteus aculeatus) in Gillsvann, using eDNA Analysis.
(Master thesis, 2023)Anthropogenic activities are putting marine and freshwater ecosystems under increasing pressure and global climate change is causing transformations in ecosystems and food chains worldwide. Invasive species pose one of the ... -
Fishing for Answers: A Historical Analysis of 150 Years of Fisheries landings in Skagerrak
(Master thesis, 2023)Norge blir ofte betraktet som et ledende eksempel på bærekraftig fiskeriforvaltning. Allikevel tilsier historien at det ikke alltid har vært slik, men skiftende referanserammer etter flere tiår med utvikling i fiskerinæringen, ... -
Designing a species-specific method, based on analysis of eDNA, for detection of lesser weever fish, and testing it at chosen locations along the coastline of Agder, Southern Norway
(Master thesis, 2023)Temperature is largely influencing species dispersion, and when the temperature conditions within an area are changing, species populations often respond by moving to other, more suitable areas. Such behavior has often ... -
Analyzing the reliability of citizen science information using Pacific oysters as a model system
(Master thesis, 2023)Det biologiske mangfolds krisen har ført til at mange arter har blitt utryddet de siste 20 årene; En av årsakene til dette er økende nærvær av fremmede arter. Mange av disse artene er uidentifiserte, noe som gjør det ... -
Behavioral reactions to H2S in farmed Salmon
(Master thesis, 2023)I resirkulerende akvakulturanlegg kan dannelse av hydrogensulfid (H2S) føre til akutt massedød av laks. Det er begrenset med kunnskap om hvordan fisk reagerer på H2S ved lave konsentrasjoner. Automatisk tolking av adferd ... -
The acoustic repertoire of Atlantic cod (Gadus morhua) and the effect of feeding on broadband clicks and their sound characteristics
(Master thesis, 2023)Populations of Atlantic cod (Gadus morhua) along the Skagerrak coast remain below viable levels today despite various implemented management strategies aimed at their recovery. Augmented management approaches are needed ... -
Time trends of heavy metals and PAHs in blue mussels (Mytilus edulis) and contamination of sediments in the Kristiansandfjord, Southern Norway
(Master thesis, 2023)The Kristiansandfjord in Southern Norway has been contaminated for several decades (Green et al., 1985; Berge et al., 2007; Øxnevad et al., 2021). In this study, contaminant concentration data from blue mussel and sediments ... -
The effect of removing a natural migration barrier on a previously isolated population of Brown trout (Salmon trutta L.) – Kvåsfossen, Norway.
(Master thesis, 2023)In the years of 1970s and 1980s acidic rain threatened coastal freshwater fish populations in European rivers. Several fish populations in western and southern Norway were particularly affected including the Norwegian brown ...