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norskBlar i tittel Fakultet for biovitenskap, fiskeri og økonomi
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Deep-sea sponge derived environmental DNA analysis reveals demersal fish biodiversity of a remote Arctic ecosystem
(Journal article; Tidsskriftartikkel; Peer reviewed, 2023-08-18)The deep-sea is vast, remote, and largely underexplored. However, methodological advances in environmental DNA (eDNA) surveys could aid in the exploration efforts, such as using sponges as natural eDNA filters for studying fish biodiversity. In this study, we analyzed the eDNA from 116 sponge tissue samples and compared these to 18 water eDNA samples and visual surveys obtained on an Arctic seamount. ... -
Deepened snow enhances gross nitrogen cycling among Pan-Arctic tundra soils during both winter and summer
(Journal article; Tidsskriftartikkel; Peer reviewed, 2021-07-10)Many Arctic regions currently experience an increase in winter snowfall as a result of climate change. Deepened snow can enhance thermal insulation of the underlying soil during winter, resulting in warmer soil temperatures that promote soil microbial nitrogen (N)-cycle processes and the availability of N and other nutrients. We conducted an <i>ex situ</i> study comparing the effects of deepened ... -
Deepened winter snow increases stem growth and alters stem δ13C and δ15N in evergreen dwarf shrub Cassiope tetragona in high-arctic Svalbard tundra
(Journal article; Tidsskriftartikkel; Peer reviewed, 2015-04-14)Abstract Deeper winter snow is hypothesized to favor shrub growth and may partly explain the shrub expansion observed in many parts of the arctic during the last decades, potentially triggering biophysical feedbacks including regional warming and permafrost thawing.Weexperimentally tested the effects of winter snow depth on shrub growth and ecophysiology by measuring stem length and stem hydrogen ... -
Deepened winter snow significantly influences the availability and forms of nitrogen taken up by plants in High Arctic tundra
(Journal article; Tidsskriftartikkel; Peer reviewed, 2019-05-13)Climate change may alter nutrient cycling in Arctic soils and plants. Deeper snow during winter, as well as summer warming, could increase soil temperatures and thereby the availability of otherwise limiting nutrients such as nitrogen (N). We used fences to manipulate snow depths in Svalbard for 9 consecutive years, resulting in three snow regimes: 1) <i>Ambient</i> with a maximum snow depth of ... -
Deeper snow alters soil nutrient availability and leaf nutrient status in high Arctic tundra
(Journal article; Tidsskriftartikkel; Peer reviewed, 2015-02-24)Nitrogen (N) mineralization, nutrient availability, and plant growth in the Arctic are often restricted by low temperatures. Predicted increases of cold-season temperatures may be important for plant nutrient availability and growth, given that N mineralization is also taking place during the cold season. Changing nutrient availability may be reflected in plant N and chlorophyll content and lead to ... -
Definition of sampling units begets conclusions in ecology: The case of habitats for plant communities
(Journal article; Tidsskriftartikkel; Peer reviewed, 2015-03-05)In ecology, expert knowledge on habitat characteristics is often used to define sampling units such as study sites. Ecologists are especially prone to such approaches when prior sampling frames are not accessible. Here we ask to what extent can different approaches to the definition of sampling units influence the conclusions that are drawn from an ecological study? We do this by comparing a ... -
Dekomponering av bygg i den nordnorske eiendomsbransjen : en analyse av avskrivningspraksis
(Master thesis; Mastergradsoppgave, 2011-05-16)I denne studien har vi undersøkt avskrivningspraksis i nordnorske eiendomsselskaper og deres etterlevelse av regnskapsreglene på det aktuelle området. Hovedfokuset for studien er hvorvidt dekomponering anvendes i bransjen og hvilke holdninger selskapene har med tanke på en dekomponeringsløsning i fremtiden. Vi har i tillegg sett på en rekke forhold som avskrivningsmetode, avskrivningstid, revurdering ... -
Dekomponering av varige driftsmidler. En analyse av regnskapspraksis på luftfartøy og eiendom
(Master thesis; Mastergradsoppgave, 2013-05-31)De fleste varige driftsmidler består av enkeltdeler med ulik levetid. Vanlig praksis etter regnskapsloven har vært å føre driftsmidlene opp som en enhet i anleggsregisteret, selv om de kan bestå av mange ulike komponenter som har betydelig ulik levetid. Dette fører til at avskrivningssatsen ofte settes for høyt, noe som igjen fører til at avskrivningstiden blir for kort og balanseført verdi blir for ... -
Dekomponering av varige driftsmidler. Vil det gi bedre informasjonsverdi til kommuneregnskapet?
(Master thesis; Mastergradsoppgave, 2018-09-02)Regjeringen sanksjonerte den 22. juni Stortingets vedtak om ny kommunelov. I lovforarbeidene legges det opp til at Kommunal- og moderniseringsdepartementet (KMD) skal utarbeide nye forskrifter knyttet til blant annet avskrivninger. Formålet til denne studien er å se nærmere på hvordan dekomponeringsløsningen kan bidra med økt informasjon knyttet til varige driftsmidler under kommunal regnskapsregulering ... -
Delårsregnskapers pålitelighet: Hvilke endringer gjøres mellom fjerdekvartalsrapporteringen og årsregnskapet, og hva kjennetegner selskaper som foretar endringer?
(Master thesis; Mastergradsoppgave, 2014-05-30)For at investorer skal kunne foreta investeringer og dermed tilføre nødvendig kapital til selskaper er de avhengig av korrekt regnskapsinformasjon. Dette får de i utgangspunktet gjennom offentlige årsregnskaper. Som følge av at investorer har behov for hyppigere informasjon enn det årsregnskapet tilbyr, må børsnoterte selskaper i tillegg publisere delårsregnskaper. De samme prinsippene for innregning ... -
A deliberative approach to valuation and precautionary management of cold water corals in Norway
(Journal article; Tidsskriftartikkel; Peer reviewed, 2015-06-17)This paper explores management challenges in relation to human impacts on cold water corals (CWC) in Norway. CWC are a slow growing organism about which there is uncertainty regarding distribution and values. We discuss area closures to protect this environmental public good against destructive fishing practices. Focus groups were combined with questionnaires to inform precautionary management ... -
Delineation of Groundwater Potential Area using an AHP, Remote Sensing, and GIS Techniques in the Ifni Basin, Western Anti-Atlas, Morocco
(Journal article; Tidsskriftartikkel; Peer reviewed, 2023-04-06)An assessment of potential groundwater areas in the Ifni basin, located in the western AntiAtlas range of Morocco, was conducted based on a multicriteria analytical approach that integrated a set of geomorphological and hydroclimatic factors influencing the availability of this resource. This approach involved the use of geographic information systems (GIS) and hierarchical analytical process ... -
Delingsøkonomiens effekt på tradisjonell næring. En empirisk analyse av Airbnbs innvirkning på prisen i hotellmarkedet
(Master thesis; Mastergradsoppgave, 2018-05-31)Fremveksten av digitale plattformer som legger til rette for transaksjoner mellom privatpersoner er i ferd med å endre økonomien i store deler av verden. Den økte konkurransen har skapt et større og mer variert tilbud for forbrukerne. Til tross for et beskjedent omfang av delingsøkonomi i Norge, vokser den nye økonomien raskt, spesielt innenfor overnattingssektoren. Airbnb, en delingsplattform ... -
Demand analysis of the Chinese whitefish market
(Master thesis; Mastergradsoppgave, 2016-11-30)A demand analysis of the Chinese whitefish market was done, using Chinese import data provided by Norwegian Seafood Council. The main whitefish species of Alaska Pollock, Cod, Haddock, Coalfish and Hake was studied using the LA/AIDS model. Alaska Pollock is the cheapest of the whitefish species, and it has the largest market share, of an average of 50 percent of all Chinese whitefish imports. Because ... -
Demand Analysis of the Whitefish Market in the EU - Has Pangasius Taken Over Market Shares in the Whitefish Market?
(Master thesis; Mastergradsoppgave, 2015-11-30)The market for seafood has changed significantly during the last couple of decades. This is mainly due to two prevailing trends, that is the stagnation in harvest of wild fish and increased production of aquaculture species. The growth in the supply of aquaculture products is caused by both new species entering the market and an increased production of already established species. Given the vast ... -
The demands they are a-changin'
(Journal article; Tidsskriftartikkel; Peer reviewed, 2018-03-15)Smooth operators such as time trends are often applied to deal with unidentified demand shifters. However, if unknown factors affect demand irregularly, a time trend fails to capture the variation. We present an index approach for estimating irregular demand shifts, decomposing total demand shifts into predicted and unexplained effects. This allows separating demand shifts caused by known factors ... -
Demersal fish assemblages in the boreo-Arctic shelf waters around Svalbard during the warm period 2007–2014
(Journal article; Tidsskriftartikkel; Peer reviewed, 2017-07-17)The temporal and spatial resilience of abundance patterns of assemblages of organisms inhabiting transition zones between Arctic and boreal regions is an issue of concern in relation to climate change. The recognition that baseline information spanning such transition zones is required to facilitate future monitoring and assessments of temporal dynamics provided the motivation for the present study. ... -
The Demersal Fish Community on the West Spitsbergen Shelf. Biodiversity, species composition, distribution and temporal changes in relation to climate.
(Master thesis; Mastergradsoppgave, 2020-05-29)This thesis explores a historical time series of trawl stations on the West Spitsbergen Shelf (WSS), aiming to understand the spatial and temporal variability of the demersal fish communities in the region. Abundance data of 42 fish species are used to investigate the species composition, richness, and diversity across six different areas under different environmetal influence. The results indicate ... -
Demographic and economic disparities among Arctic regions
(Journal article; Tidsskriftartikkel; Peer reviewed, 2015-08-20)We use demographic and economic indicators to analyze spatial differences and temporal trends across 18 regions surrounding the Arctic Ocean. Multifactor and cluster analysis were used on 10 indicators reflecting income, employment and demography from 1995 to 2008. The main difference is between regions with high population densities, low natural growth rate, and low unemployment (Russia, Norway ... -
The Demographic buffering hypothesis: Evidence and challenges
(Journal article; Tidsskriftartikkel; Peer reviewed, 2020-06)In (st)age-structured populations, the long-run population growth rate is negatively affected by temporal variation in vital rates. In most cases, natural selection should minimize temporal variation in the vital rates to which the long-run population growth is most sensitive, resulting in demographic buffering. By reviewing empirical studies on demographic buffering in wild populations, we found ...
