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norskBlar i tittel Norges fiskerihøgskole
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Data Envelopment Analysis for Analyzing Technical Efficiency in Aquaculture: The bootstrap methods
(Journal article; Tidsskriftartikkel; Peer reviewed, 2020-01-14)The paper adopts the bootstrap procedures for data envelopment analysis to analyze the technical efficiency in the Vietnam’s intensive white-leg shrimp farming. The results demonstrate that the null hypothesis of constant returns-to-scale is rejected in favor of variable returns-to-scale for the production technology. Moreover, the potential improvement is greater using bootstrapping than that ... -
Data on European seafood biomass production by country, sectors, and species in 2004–2014 and on ecological characteristics of the main species produced
(Journal article; Tidsskriftartikkel; Peer reviewed, 2018-10-30)In this data article, we present the 2004–2014 average European seafood production volume by production sector, country, and species. The production data originates from the Food and Agriculture Organisation of the United Nations (FAO) and covers three production sectors: Marine fisheries, marine aquaculture, and freshwater production. We present the main ecological characteristics of each species ... -
Data on European seafood biomass production by country, sectors, and species in 2004–2014 and on ecological characteristics of the main species produced
(Journal article; Tidsskriftartikkel; Peer reviewed, 2018-10-30)In this data article, we present the 2004–2014 average European seafood production volume by production sector, country, and species. The production data originates from the Food and Agriculture Organisation of the United Nations (FAO) and covers three production sectors: Marine fisheries, marine aquaculture, and freshwater production. We present the main ecological characteristics of each species ... -
Data Stewardship (DocEnhance)
(Conference object; Konferansebidrag, 2022) -
Daylight-driven carbon exchange through a vertically structured microbial community
(Journal article; Tidsskriftartikkel; Peer reviewed, 2023-05-26)Interactions between autotrophs and heterotrophs are central to carbon (C) exchange across trophic levels in essentially all ecosystems and metabolite exchange is a frequent mechanism for distributing C within spatially structured ecosystems. Yet, despite the importance of C exchange, the timescales at which fixed C is transferred in microbial communities is poorly understood. We employed a ... -
Dealing with HIV/AIDS and poverty in fishing communities : how risky are artisanal marine fisher-folks at Elmina in Ghana?
(Master thesis; Mastergradsoppgave, 2008-05-15)The work examines the knowledgeability of fisher-folks as well as determines the extent to which their livelihood influences their susceptibility to HIV/AIDS infection. By making specific reference to fisher-folks at Elmina fishing community in the Central Province of the Republic of Ghana, it particularly challenges the hypothesis that fisher-folks are highly vulnerable to HIV/AIDS infection. The ... -
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. ... -
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 ... -
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 ... -
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 ... -
Dendrobeaniamine A, a new alkaloid from the Arctic marine bryozoan Dendrobeania murrayana
(Journal article; Tidsskriftartikkel; Peer reviewed, 2019-02-20)The new guanidine alkaloid Dendrobeaniamine A (1) was isolated from the organic extract of the Arctic marine bryozoan <i>Dendrobeania murrayana</i>. The chemical structure of 1 was elucidated by spectroscopic experiments, including 1D and 2D NMR and HRESIMS analysis. Compound 1 is a lipoamino acid, consisting of a C<sub>12</sub> fatty acid anchored to the amino acid arginine. The bioactivity of 1 ... -
Dendrobeaniamine A, a new alkaloid from the Arctic marine bryozoan Dendrobeania murrayana
(Conference object; Konferansebidrag, 2019)Chemistry guided purification of the organic extract of the Arctic marine bryozoan <i>Dendrobeania murrayana</i> yielded one new compound, Dendrobeaniamine A, and it was present in abundant amounts in the organic extract. Dendrobeaniamine A is a fusion of long chain aliphatic fatty acid and the cationic amino acid residue arginine.The bioactivity and natural function of this compound thus remain to ... -
Desarmillaria ectypa ny for Norge
(Journal article; Tidsskriftartikkel; Peer reviewed, 2023)Desarmillaria ectypa was found new to Norway on Kvaløya, Tromsø municipality on 30th of July 2022. This rare mushroom grows on medium rich to rich fens and mires. It can be identified based on the growth habitat, medium-sized fruitbodies with yellow and brownish colors, scales on the hat center, lack of veil, gills with pinkish tint and white spores. The ecology, distribution and red-list status of ... -
Description and analysis of the white shrimp (Litopenaeus schmitti) fisheries in Pearl Lagoon, Atlantic Coast of Nicaragua, with focus on the gear selectivity in the artesanal fleets
(Master thesis; Mastergradsoppgave, 2006-06-13)Fishing continues to be the main source of income in the Pearl Lagoon Basin in Nicaragua. Currently the fishermen in the area have expressed growing concern about the shrimps stocks. Over the past years it has become increasingly clear that the fish and shrimp stocks are being exhausted, severely over-fished and experiencing a serious decline. This thesis examines the catch compositions (shrimps ... -
Description of the processes in the value chain and risk assessment of decomposition substances and oxidation products in fish Oils. Opinion of Steering Committee of the Norwegian Scientific Committee for Food Safety
(Research report; Forskningsrapport, 2011-10-19)The Norwegian Scientific Committee for Food Safety (VKM) has been asked by the Norwegian Food Safety Authority to perform a health risk assessment on decomposition substances and oxidation products in fish oils intended for human consumption except pharmaceuticals. Seal and/or krill oil intended for human consumption might be included but in separate chapters. EU’s hygiene regulations for the ... -
Design and construction of a cellular biosensor for detection of autoinducer-2 quorum sensing inhibitors using a genetic toggle switch
(Master thesis; Mastergradsoppgave, 2022-01-05)Bacteria employ molecular communication systems termed quorum sensing (QS) to sense cell density and organize collective behavior. Many of these behaviors have implications on modern society and human health. As the antimicrobial toolbox of classic antibiotics shrinks due to extensive spread of resistance in pathogenic bacteria, interfering with bacterial communication by ‘quenching’ the QS signals ... -
Design av en transkripsjonssensor i Escherichia coli : til deteksjon av virkningsmåten til nyoppdagede antimikrobielle peptider
(Master thesis; Mastergradsoppgave, 2013-05-15)Antibiotikaresistens er vurdert som den største trusselen knyttet til behandling av de smittsomme sykdommene i den vestlige verden, på grunn av økningen i infeksjoner som følge av multiresistente bakterier. Nylige sykdomsutbrudd forårsaket av bakterier med total eller delvis resistens mot tilgjengelige antibiotika, kan være meget alvorlige siden mulighetene for behandling er svært begrenset. Marin ... -
Det attraktive stedet
(Master thesis; Mastergradsoppgave, 2009-06-05)Denne avhandlingen omhandler Placebranding av steder, nærmere bestemt Hammerfest. I avhandlingen tar jeg for meg spørsmålet om hvordan omdømmet til Hammerfest er i dag, om de har en ny og attraktiv identitet, i så fall hvilken, og hvilke implikasjoner fremstillingen kan ha for byens utvikling og vekst. Til å løse problemstillingen benyttes kvalitativ metode. Ved å analysere artiklene fra en ... -
Det norske sykdomsregimet og bekjempelsen av infeksiøs lakseanemi
(Master thesis; Mastergradsoppgave, 2023-05-15)Sykdomsbekjempelse i akvakultur er en kontinuerlig og kompleks utfordring med både miljømessige, velferdsmessige og økonomiske konsekvenser. Virussykdommen infeksiøs lakseanemi (ILA) er en av sykdommene som norske myndigheter, veterinærer og oppdrettere har bekjempet lengst og brukt mest innsats på å kontrollere. Når dyrehelseforordningen tredde inn i norsk rett den 28. april i 2021, kom det nye ... -
Detection of specific Atlantic salmon antibodies against salmonid alphavirus using a bead-based immunoassay
(Journal article; Tidsskriftartikkel; Peer reviewed, 2020-07-30)Salmonid alphavirus (SAV) is the etiological cause of pancreas disease (PD) in Atlantic salmon (<i>Salmo salar</i>). Several vaccines against SAV are in use, but PD still cause significant mortality and concern in European aquaculture, raising the need for optimal tools to monitor SAV immunity. To monitor and control the distribution of PD in Norway, all salmonid farms are regularly screened for SAV ...
