Department of Natural Sciences: Recent submissions
Now showing items 141-160 of 423
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Combining population genomics with demographic analyses highlights habitat patchiness and larval dispersal as determinants of connectivity in coastal fish species
(Peer reviewed; Journal article, 2022)Gene flow shapes spatial genetic structure and the potential for local adaptation. Among marine animals with nonmigratory adults, the presence or absence of a pelagic larval stage is thought to be a key determinant in ... -
Allee effects and the Allee-effect zone in northwest Atlantic cod
(Peer reviewed; Journal article, 2022) -
Simulated poaching affects global connectivity and efficiency in social networks of African savanna elephants-An exemplar of how human disturbance impacts group-living species.
(Peer reviewed; Journal article, 2022)Selective harvest, such as poaching, impacts group-living animals directly through mortality of individuals with desirable traits, and indirectly by altering the structure of their social networks. Understanding the ... -
Automated Plankton Classification With a Dynamic Optimization and Adaptation Cycle
(Peer reviewed; Journal article, 2022) -
Species distribution models as a tool for early detection of the invasive Raphidiopsis raciborskii in European lakes
(Peer reviewed; Journal article, 2022)In freshwater habitats, invasive species and the increase of cyanobacterial blooms have been identified as a major cause of biodiversity loss. The invasive cyanobacteria Raphidiopsis raciborskii a toxin-producing and ... -
Recycled aggregates derived from excavation materials — mechanical performance and identification of weak minerals
(Peer reviewed; Journal article, 2022) -
Genomic reaction norms inform predictions of plastic and adaptive responses to climate change
(Peer reviewed; Journal article, 2022)Genomic reaction norms represent the range of gene expression phenotypes (usually mRNA transcript levels) expressed by a genotype along an environmental gradient. Reaction norms derived from common-garden experiments are ... -
Host in reserve: The role of common shrews (Sorex araneus) as a supplementary source of tick hosts in small mammal communities influenced by rodent population cycles
(Peer reviewed; Journal article, 2022)Rodents often act as important hosts for ticks and as pathogen reservoirs. At north -ern latitudes, rodents often undergo multi- annual population cycles, and the peri -odic absence of certain hosts may inhibit the survival ... -
Classification of pig calls produced from birth to slaughter according to their emotional valence and context of production
(Peer reviewed; Journal article, 2022)Vocal expression of emotions has been observed across species and could provide a non-invasive and reliable means to assess animal emotions. We investigated if pig vocal indicators of emotions revealed in previous studies ... -
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 ... -
FishSizer: Software solution for efficiently measuring larval fish size
(Peer reviewed; Journal article, 2022)Length and depth of fish larvae are part of the fundamental measurements in many marine ecology studies involving early fish life history. Until now, obtaining these measurements has required intensive manual labor and the ... -
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 ...