Artikler, rapporter og annet (Norges fiskerihøgskole): Nye registreringer
Viser treff 141-160 av 1012
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Ultrasonic imaging as a means of monitoring gonadal development in lumpfish (Cyclopterus lumpus)
(Journal article; Tidsskriftartikkel; Peer reviewed, 2023-09-21)The commercial farming of juvenile lumpfish requires monitoring of gonadal development to achieve synchronized production. Conventional methods such as gonadosomatic index (GSI), sex hormone analyses, gonadal histology, endoscopy, and gene expression analyses are costly, invasive, and often involve sacrificing the fish. We assessed the efficiency of ultrasound as a non-invasive method for monitoring ... -
Trapped in the TAC Machine: Making a Fisheries-Based Indicator System for Coastal Cod in Steigen, Norway
(Chapter; Bokkapittel, 2020)The GAP project is concerned with the lack of stakeholder participation in providing knowledge for management. This creates a legitimacy problem as the fishermen do not get to share the knowledge basis for and justification of management decisions. In addition, fishermen’s experience-based knowledge remains unused. GAP intends to bridge the legitimacy and knowledge gaps, finding practical ways for ... -
Bridging the Gap: Experiments in the Heart of the Transition Zone
(Chapter; Bokkapittel, 2020)This book is about the on-going transition of fisheries governance and the emergence of research practices and advice frameworks that allow for the co-creation of common knowledge bases for management. This chapter introduces the context under which the GAP project (‘Bridging the gap between science and stakeholders') was conceived, describes its overall approach, orientates the reader to key issues ... -
Knowledge for Fisheries Governance: Participation, Integration and Institutional Reform
(Chapter; Bokkapittel, 2020)As outlined in Chapter 1, the GAP project is situated within a transition zone from a traditional fisheries management approach that relies upon a clear separation of knowledge towards a new ‘bridging perspective’, which aims to establish a common knowledge base for fisheries governance. The transition builds on collaborative practices of participatory research and joint knowledge production, as ... -
Bridging Gaps, Reforming Fisheries
(Chapter; Bokkapittel, 2020)Scientific debates often revolve around the issues of ‘unbiased science’ with the majority of scientists keeping themselves at arm’s length from policy-making to ensure their credibility. Participatory research has been shifting these dynamics and has led to the emergence of research practices and advice frameworks that allow co-creation of common knowledge bases for management. This chapter, following ... -
Conclusion
(Chapter; Bokkapittel, 2020)This chapter summarizes the arguments and discusses the results of the GAP project in the context of the ongoing reform in fisheries governance. -
Small-Scale Fisheries Governance in Norway: Hierarchy, Institutions and Markets
(Chapter; Bokkapittel, 2020-04-29)Small-scale fisheries are highly relevant in Norway. Until 1989, small-scale fisheries were open access and, like other Norwegian fisheries, subsidised; since then they have changed radically. The closure of major fisheries in the early 1990s, following collapses in important stocks and the removal of direct subsidies, has affected fisheries of all sizes. Societal changes have also had an impact on ... -
Data Stewardship (DocEnhance)
(Conference object; Konferansebidrag, 2022) -
Quantum Leaper: A Methodology Journey From a Model in NetLogo to a Game in Unity
(Chapter; Bokkapittel, 2022)Combining Games and Agent-Based Models (ABMs) in a single research design (i.e. GAM design) shows potential for investigating complex past, present, or future social phenomena. Games offer engaging environments that can help generating insights into social dynamics, perceptions, and behaviours, while ABMs support the representation and analysis of complexity. We present here the first attempt to ... -
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. ... -
Is fisheries governance possible?
(Journal article; Tidsskriftartikkel; Peer reviewed, 2014-02-11)Are there limits to the governability of a fishery? The establishment of a 200 nautical mile economic zone in Norway in 1977 made it possible to change from an open-access regime to a more closed one. In this process, the former self-regulating Norwegian fishing industry, to a large extent, accepted and adapted an explicit, hierarchical form of state-run governance. However, the process of change ... -
Ghost fishing efficiency by lost, abandoned or discarded pots in snow crab (Chionoecetes opilio) fishery
(Journal article; Tidsskriftartikkel; Peer reviewed, 2023-07-07)Marine pollution by lost, abandoned or otherwise discarded fishing gear (ALDFG) often has negative impact on the ecosystem through plastic pollution and continuous capture of marine animals, so-called “ghost fishing”. ALDFG in pot fisheries is associated with high ghost fishing risk. The snow crab (Chionoecetes opilio) pot fishery is conducted in harsh weather conditions increasing the risk of ... -
Heavy Metals in Salt Marsh Sediments of Porteresia Bed along the Karnafully River Coast, Chittagong
(Journal article; Tidsskriftartikkel; Peer reviewed, 2012-09-30)Heavy metal (Cu, Zn, Cd, Pb and Fe) concentrations in salt marsh sediments of the Karnafully River coast were investigated in this study. Sediment samples of four different sites were analysed for selected heavy metals by AAS (atomic absorption spectrophotometry). The mean values of heavy metals were 45.79 µg/g for Cu, 105.0 µg/g for Zn, 0.43 µg/g for Cd, 26.70 µg/g for Pb and 3297.38 µg/g for Fe ... -
Illegal fishing: A challenge to fisheries management in Norway
(Journal article; Tidsskriftartikkel; Peer reviewed, 2023-06-30)The management of the Norwegian Northeast Atlantic cod fishery has in many ways been a success story; quotas have been high (but now declining), profitability has been higher than most other industries and there is great interest among young recruits to enter the fishery. However, over the last decade illegal fishing of allocated quotas and black-market transactions throughout the value chain ... -
What do the Great Barrier Reef management and Norwegian spatial fisheries management have in common?
(Conference object; Konferansebidrag, 2018)What do the Great Barrier Reef management and Norwegian spatial fisheries management have in common? The presentation addresses the importance of governmentality (Foucault 1978), understood as the art of governing for successful marine governance (MG). Management of the Great Barrier Reef and the Norwegian spatial management of fisheries are used as examples of systems that depends on and foster ... -
LC-MS based dereplication and isolation of compound from Arctic marine bryozoan Dendrobeania murrayana
(Conference object; Konferansebidrag, 2018)The new guanidine based alkaloid Dendrobeaniamine A was isolated from the organic crude extract of the Arctic marine bryozoan <i>Dendrobeania murrayana</i>. The structure was determined by interpretation of data from 1D and 2D NMR spectroscopic methods and mass spectrometry (HR-MS) analysis. Dendrobeaniamine A did not show any biological activities in the applied bioassays. Further bioactivity ... -
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 ... -
Slow progress towards a better regime for environmental impact assessments
(Conference object; Konferansebidrag, 2018)The purpose of the presentation is to give an overview of the status of environmental assessments in international law, and to review the progress of a global and a regional process in trying to improve the current regime. The international regime for environmental impact assessments (EIA) in the Arctic Ocean is symptomatic for the situation in most regional seas. There is a predominance of ... -
Identifying transferable skills to enhance Early Career Researchers employability
(Conference object; Konferansebidrag, 2018)Doctoral candidates are facing a diverse employment landscape that shifted significantly in the last decades, with less than 30 % of doctoral graduates working in academia or in research and development related jobs. In addition to becoming more inter-sectoral, working environments are becoming increasingly inter-national and inter-disciplinary. This development can make the employment requirements ... -
The effect of CO2, total ammonia nitrogen and pH on growth of juvenile lumpfish (Cyclopterus lumpus)
(Journal article; Tidsskriftartikkel; Peer reviewed, 2023-08-12)The objective of this study was to examine the effects of CO<sub>2</sub>, total ammonia nitrogen (TAN: nitrogen bound as either NH<sub>3</sub> or NH<sub>4</sub><sup>+</sup>) and pH on the growth and survival of juvenile lumpfish in a two-month growth study. The results demonstrate the complex interactions of these water quality variables. The specific growth rate (SGR) of the lumpfish was progressively ...