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norskFakultet for biovitenskap, fiskeri og økonomi: Recent submissions
Now showing items 1141-1160 of 5177
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Melt season dynamics in a High Arctic estuarine tidal flat: A microbial perspective
(Master thesis; Mastergradsoppgave, 2022-05-16)The substantial influx of freshwater to High Arctic coastal ecosystems influences nutrient, organic matter, and sediment dynamics, stratification, and light availability throughout the melt season. These changes shape pelagic microbial community composition and functioning, though little is known about impacts on nearshore benthic bacteria. Globally, mudflats are hotspots for biogeochemical cycling, ... -
Nitrogen Excretion and Aspects of Water Balance in Fasting Hooded Seal Pups (Cystophora cristata)
(Master thesis; Mastergradsoppgave, 2022-06-10)The post-weaning fast of hooded seal pups (Cystophora cristata) is not well understood. What energy sources are being used? How is water balance maintained? How are these mechanisms balanced with thermoregulation? This study aims to answer some questions on the physiological mechanisms in place to assist an Arctic seal pup in the early stages of their life with no source of food or freshwater. ... -
Under-ice plankton abundance and lipid dynamics in a subarctic lake.
(Master thesis; Mastergradsoppgave, 2022-05-16)Shortening winters and changing ice and snow cover conditions are examples of the many shifts expected in subarctic lakes due to climate change. Well-documented changes in ice and snow cover conditions highlight the need to understand under-ice ecosystems and the consequences a changing climate brings to the freshwater biota. This study investigated the impact of under-ice environmental conditions ... -
Turnoverintensjon i Sjøforsvarets operative avdelinger: En kvantitativ undersøkelse av Marinen og Kystvakten
(Master thesis; Mastergradsoppgave, 2021-12-01)Turnover er en stor utfordring for det norske Forsvaret som i utstrakt grad produserer egen kompetanse. Konsekvensen av høy turnover er at Forsvaret bruker for mye ressurser på utdanning og opplæring, som igjen vil ha innvirkning på den operative evnen. Målet med studien var å utforske hvordan arbeid-familie-fritid-konflikt og job embeddedness var assosiert med turnoverintensjon i Marinen og Kystvakten. ... -
Innovations in the global knowledge economy: consequences for organizations
(Journal article; Tidsskriftartikkel; Peer reviewed, 2014-11-19)The authors know with a high degree of certainty that when new knowledge emerges, innovations in organizations will be created and economic growth stimulated in the global knowledge economy.<p> <p>The question the authors will examine is: How might a move from industrial knowledge clusters to global knowledge clusters impact on the development of innovations in organizations? The question is ... -
Endring i adaptiv atferd hos eldre personer med utviklingshemning - en sammenligning mellom personer med Down syndrom og personer med annen utviklingshemning
(Journal article; Tidsskriftartikkel; Peer reviewed, 2012-01-30)Bakgrunn: Stadig flere personer med utviklingshemning oppnår høg alder. Endring i adaptiv atferd kan være et tidlig tegn på aldersrelaterte lideleser som Alzheimers sykdom. Studien belyser om screeningsinstrumentet ABDQ kan benyttes av omsorgspersoner for å avdekke endring i adaptiv atferd.<p> <p>Materiale og metode: Undersøkelsen omfatter 87 personer med utviklingshemning som tidligere har ... -
Are Hooded seals (Cystophora cristata) endowed with mechanisms for non-shivering thermogenesis within the skeletal muscle?
(Master thesis; Mastergradsoppgave, 2022-06-15)Hooded seals (Cystophora cristata) are marine mammals and are characterised as an “Arctic seal” species due to their close association to the pack ice. Their relationship with the ice and water creates challenges in maintaining an internal body temperature of ~37°C. In homeothermic animals, like the hooded seal, shivering is used for thermogenesis, however this can rapidly fatigue skeletal muscle. ... -
Diving and feeding of adult Atlantic salmon when migrating through the coastal zone in Norway
(Journal article; Tidsskriftartikkel; Peer reviewed, 2022-05-23)Atlantic salmon post-spawners from a population in northern Norway were tagged with data storage tags (N = 773), and the depth use and diving behaviour of recaptured individuals within the coastal zone were examined, both on their outward migration to sea (N = 44) and their return to the natal river after overwintering at sea (N = 34). In addition, the stomach contents of 909 returning adults caught ... -
Experiences from 40 years of muskox (Ovibos moschatus) farming in Norway
(Journal article; Tidsskriftartikkel; Peer reviewed, 2011-04-01)Experiences from the management of a semi-domesticated herd of muskoxen, mostly on an island outside Tromsø (~70º N; 19º E), over a period of 40 years have been collected, and data on husbandry practices, reproduction, diseases and longevity are presented and discussed. -
Ruteark eller regneark? Kognitive utfordringer ved å løse finansoppgaver på papir og PC
(Journal article; Tidsskriftartikkel; Peer reviewed, 2012-02-08)Innebygde finansfunksjoner kan utføre avanserte beregninger i et regneark. Ved å kopiere formler i stedet for å lage dem manuelt, kan en løsning dessuten utvikles raskt. I artikkelen spør vi om det er mindre faglig krevende å løse oppgaver i et regneark enn på papir (ruteark). Vi forsøker å svare på spørsmålet ved å analysere en finansoppgave med Blooms reviderte taksonomi (BRT) for det kognitive ... -
Time series data for Canadian arctic vertebrates: IPY contributions to science, management, and policy
(Journal article; Tidsskriftartikkel; Peer reviewed, 2012-05-22)Long-term data are critically important to science, management, and policy formation. Here we describe a number of data collections from arctic Canada that monitor vertebrate population trends of freshwater and marine fish, marine birds, marine and terrestrial mammals. These time series data cover the last ca. 30 years and capture a period from the onset of global changes affecting the Arctic up to ... -
Is Glacial Meltwater a Secondary Source of Legacy Contaminants to Arctic Coastal Food Webs?
(Journal article; Tidsskriftartikkel; Peer reviewed, 2022-04-26)Climate change-driven increases in air and sea temperatures are rapidly thawing the Arctic cryosphere with potential for remobilization and accumulation of legacy persistent organic pollutants (POPs) in adjacent coastal food webs. Here, we present concentrations of selected POPs in zooplankton (spatially and seasonally), as well as zoobenthos and sculpin (spatially) from Isfjorden, Svalbard. ... -
Land-cover, climate and fjord morphology drive differences in organic matter and nutrient dynamics in two contrasting northern river-fjord systems
(Journal article; Tidsskriftartikkel; Peer reviewed, 2022-03-31)Climate and land-use changes are leading to impacts on individual ecosystems as well as shifts in transfer dynamics between interconnected systems. At the land-ocean interface, changes in riverine inputs of organic matter (OM) and nutrients have the potential to lead to shifts in coastal carbon and nutrient cycling with consequences for ecosystem structure and function. In this study, we assess OM ... -
The relative impact of health communication conveyed via quick response codes: A conjoint experiment among young thai consumers doing grocery shopping
(Journal article; Tidsskriftartikkel; Peer reviewed, 2022-06-25)This paper explores the impact of health communication using smartphones and the outcome of healthier purchases when young Thai consumers shop for groceries. A conjoint experiment was arranged whereby participants (n ¼ 214) purchased grocery using information conveyed via quick response (QR) codes. Results show that a healthy food label, and a good consumer rating on the food’s health, evoked ... -
Automatisk formativ feedback kan gi god motivasjon og læring : implementering av god tilbakemeldingspraksis i interaktive regnearkoppgaver
(Journal article; Tidsskriftartikkel; Peer reviewed, 2015-02-05)I artikkelen presenterer vi et konsept der en student løser tradisjonelle finansoppgaver i regneark i stedet for på papir. Oppgavene er interaktive. Dette betyr at studentene kan få formative tilbakemeldinger automatisk når de selv ønsker det. Målet med tilbakemeldingene er å hjelpe studentene til å komme et skritt videre med problemløsingen sin. Den innovative algoritmen som evaluerer studentenes ... -
Towards some general ecological principles
(Journal article; Tidsskriftartikkel; Peer reviewed, 2013-01-03)Discrete deterministic age-structured, stage-structured and difference delay equation population models are analysed and compared with respect to stability and nonstationary behaviour. All three models show that species with iteroparous life histories tend to be more stable than species with semelparous life histories which allow us to conclude that this must be a fairly general ecological ... -
Merging indigenous and scientific knowledge links climate with the growth of a large migratory caribou population
(Journal article; Tidsskriftartikkel; Peer reviewed, 2020-01-08)1. Climate change in the Arctic is two to three times faster than anywhere else in the world. It is therefore crucial to understand the effects of weather on keystone arctic species, particularly those such as caribou (Rangifer tarandus) that sustain northern communities. Bridging long-term scientific and indigenous knowledge offers a promising path to achieve this goal, as both types of knowledge ... -
Uncovering the secrets they keep – the role of parasites in food web ecology
(Master thesis; Mastergradsoppgave, 2022-06-01)Interactions involving parasites often account for large proportions of links within aquatic food webs, yet few studies integrate parasites into their food web analyses. This analysis compares three sets of highly resolved food webs that differ in taxa composition, space, and time for a subarctic lake system. Key topological food web metrics, including connectance, linkage density, and mean generality ... -
Molecular study of digenean diversity in aquatic organisms in northern Norway, with a focus on the seasonality of Crepidostomum [Braun, 1900]
(Master thesis; Mastergradsoppgave, 2022-06-07)This study aimed to elucidate cryptic trematode diversity across multiple life stages in aquatic organisms. I collected samples from first intermediate hosts (bivalves), second intermediate hosts (amphipods and insect nymphs), and definitive hosts (fish), and identified them by use of molecular methods. Phylograms based on molecular markers from 28S and COI genes were used to identify nine species ... -
The structure of nasal conchae in Svalbard rock ptarmigan (Lagopus muta hyperborea) with comparisons to three other Galliform birds
(Master thesis; Mastergradsoppgave, 2022-05-27)Birds are endothermic homeotherms that regulate internal metabolic heat production to keep a stable body core temperature. Lung ventilation, which is required to obtain oxygen for metabolism, is potentially a large source for heat and water loss. In a polar habitat with low year-round temperatures and scarcity of food in the winter, conservation of heat and water is crucial for survival of the ...
