Browsing Institutt for biologi by Title
Now showing items 155-174 of 2517
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Are model organisms representative for climate change research? Testing thermal tolerance in wild and laboratory zebrafish populations
(Journal article; Peer reviewed, 2019)Model organisms can be useful for studying climate change impacts, but it is unclear whether domestication to laboratory conditions has altered their thermal tolerance and therefore how representative of wild populations ... -
Are We Speaking the Same Language? Recommendations for a Definition and Categorization Framework for Plastic Debris
(Journal article; Peer reviewed, 2019)The accumulation of plastic litter in natural environments is a global issue. Concerns over potential negative impacts on the economy, wildlife, and human health provide strong incentives for improving the sustainable use ... -
Are yolk thiamine levels associated with stress hormone levels in seabirds?
(Master thesis, 2022)Flere norske sjøfuglbestander minsker. Årsaken til populasjonsnedgangen kan være sammensatt, og ulike forklarende faktorer som klimaendringer, redusert mattilgang, forurensning, fremmede arter og sykdom har blitt foreslått. ... -
Artificial light during the polar night disrupts Arctic fish and zooplankton behavior down to 200 m depth
(Peer reviewed; Journal article, 2020)For organisms that remain active in one of the last undisturbed and pristine dark environments on the planet—the Arctic Polar Night—the moon, stars and aurora borealis may provide important cues to guide distribution and ... -
Artificial Reef Effect in relation to Offshore Renewable Energy Conversion: State of the Art
(Journal article; Peer reviewed, 2012)The rapid worldwide growth of offshore renewable energy production will provide marine organisms with new hard substrate for colonization, thus acting as artificial reefs. The artificial reef effect is important when ... -
Artificial selection on allometry: change in elevation but not slope
(Journal article; Peer reviewed, 2012)To what extent within-species (static) allometries constitute a constraint on evolution is the subject of a long-standing debate in evolutionary biology. A prerequisite for the constraint hypothesis is that static allometries ... -
Artificial size selection experiment reveals telomere length dynamics and fitness consequences in a wild passerine
(Peer reviewed; Journal article, 2022)Telomere dynamics could underlie life-history trade-offs among growth, size and longevity, but our ability to quantify such processes in natural, unmanipulated populations is limited. We investigated how 4 years of artificial ... -
AsKC11, a Kunitz Peptide from Anemonia sulcata, Is a Novel Activator of G Protein-Coupled Inward-Rectifier Potassium Channels
(Peer reviewed; Journal article, 2022)(1) Background: G protein-coupled inward-rectifier potassium (GIRK) channels, especially neuronal GIRK1/2 channels, have been the focus of intense research interest for developing drugs against brain diseases. In this ... -
Assessing Africa-wide pangolin exploitation by scaling local data
(Journal article; Peer reviewed, 2018)Overexploitation is one of the main pressures driving wildlife closer to extinction, yet broad‐scale data to evaluate species’ declines are limited. Using African pangolins (Family: Pholidota) as a case study, we demonstrate ... -
Assessing crop and livestock losses along the Rungwa-Katavi Wildlife Corridor, South-Western Tanzania
(Journal article, 2017)Humans and wildlife interact negatively, especially when humans transform natural wildlife habitats by establishing settlements and crop fields. Encroachment and habitat fragmentations caused by human activities decrease ... -
Assessing Important Conservation Areas for Colonial Species From Individual Tracking Data: An Evaluation of the Effects of Colony Structure and Temporal Heterogeneity in Movement Patterns
(Peer reviewed; Journal article, 2022)Sensitivity of marine ecosystems to human disturbance leads to an increasing need to devise effective conservation initiatives. One key conservation leverage tool is the establishment of marine protected areas, which can ... -
Assessing risks of invasion through gamete performance: Farm Atlantic salmon sperm and eggs show equivalence in function, fertility, compatibility and competitiveness to wild Atlantic salmon
(Journal article; Peer reviewed, 2014)Adaptations at the gamete level (a) evolve quickly, (b) appear sensitive to inbreeding and outbreeding and (c) have important influences on potential to reproduce. We apply this understanding to problems posed by escaped ... -
Assessing the Diet of the Golden eagle (Aquila chrysaetos) and the Biomagnification of Metals by use of Stable isotope analysis and ICP-MS.
(Master thesis, 2013)Feathers from the golden eagle and muscle tissue from the most important sources of prey (hare, sheep, grouse and reindeer) in the golden eagle diet were analysed for stable isotopes of carbon and nitrogen, and for the ... -
Assessing the effect of mitigation efforts to improve vegetation recovery inpowerline construction sites across Norway
(Journal article; Peer reviewed, 2022)Land-use related to technical infrastructure puts great pressure on nature and landscapes globally. We used a screening approach to evaluate vegetation development in 295 construction sites related to upkeeping of the ... -
Assessing the effect of roads on impala (Aepyceros melampus) stress levels using faecal glucocorticoid metabolites
(Master thesis, 2013)Loss of habitat is the main cause of species extinction, which today is 100 - 1000 times faster than the background extinction rate before the presence of mankind. One cause is that natural areas are being increasingly ... -
Assessing the Value of a Citizen Science Approach for Ctenophore Identification
(Journal article; Peer reviewed, 2021)During the era of biodiversity loss, a complete species census and understanding where the different species occur is of high priority. Even though this knowledge has increased tremendously, mainly with expanded use of ... -
Assessment of a Passive Plankton Sampler Technology for Monitoring Densities of Planktonic Sea Lice (Lepeophtheirus salmonis & Caligus elongatus) in the Hardangerfjord
(Master thesis, 2023)De to artene av havlus, Lepeophtheirus salmonis og Caligus elongatus, er ektoparasittiske hoppekreps som utgjør den største parasittiske trusselen i lakseoppdrett og mot bestander av vill laksefisk i Norge. De to artenes ... -
Assessment of communities knowledge and perceptions on impacts of Hoima- Tanga crude oil pipeline to biodiversity in Swagaswaga Game Reserve
(Master thesis, 2018)The Hoima - Tanga crude oil pipeline also known as the East African Crude Oil is under construction and intended to transport crude oil from Uganda s oil fields to the Port of Tanga in Tanzania on the Indian Ocean following ... -
An assessment of field techniques to estimate lion presence and abundance
(Doctoral theses at NTNU;2022:396, Doctoral thesis, 2022)Large carnivores play a critical role in regulating ecosystems through predation and competition. Many large carnivores however have experienced a large population decline. The common causes of the decline are human related ... -
Assessment of glucosamine and chondroitin in feed. Opinion of the Panel on Animal Feed of the Norwegian Scientific Committee for Food Safety
(VKM Report;, Research report, 2008)