Fakultet for biovitenskap, fiskeri og økonomi: Recent submissions
Now showing items 701-720 of 5173
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A systematic and critical review of leadership styles in contemporary hospitality: a roadmap and a call for future research
(Journal article; Tidsskriftartikkel; Peer reviewed, 2022-03-02)Purpose – The purpose of this paper is to provide an overview of leadership styles in the hospitality industry. It also demonstrates theories used in hospitality leadership styles research, identifies the main outcomes and highlights gaps for future research.<p> <p>Design/methodology/approach – This paper presents a comprehensive review of the 79 articles on leadership styles in the hospitality ... -
Sustainable practices in hospitality pre and amid COVID-19 pandemic: Looking back for moving forward post-COVID-19
(Journal article; Tidsskriftartikkel; Peer reviewed, 2022-03-15)Sustainability issues are becoming increasingly important in the hospitality sector during crisis times such as COVID-19 and post-pandemic. In order to synthesize the literature on sustainable practices in hospitality, we developed a systematic literature to illustrate the dominant sustainable practices in hospitality. We present a comprehensive review of the 48 articles on sustainable practices in ... -
Trends in mussel cover, density and size at exploited and unexploited intertidal reefs in eastern South Africa
(Journal article; Tidsskriftartikkel; Peer reviewed, 2022-03-20)The brown mussel Perna perna is the dominant indigenous mussel along the east coast of South Africa, where it is harvested by recreational and subsistence fishers. High fishing pressure near urban areas led to declining abundance and consequently to the closure of some reefs to fishing in 1998. We estimated trends in mussel population dynamics at exploited and unexploited sites, along fixed transects, ... -
Flashing lights affect the photophysiology and expression of carotenoid and lipid synthesis genes in Nannochloropsis gaditana
(Journal article; Tidsskriftartikkel; Peer reviewed, 2022-11-20)Nannochloropsis gaditana is a promising microalga for biotechnology. One of the strategies to stimulate its full potential in metabolite production is exposure to flashing lights. Here, we report how N. gaditana adapts to different flashing light regimes (5, 50, and 500 Hz) by changing its cellular physiology and the relative expression of genes related to critical cellular functions. We analyzed ... -
Population dynamics and production of small, marine copepods in highly seasonal Arctic and sub-Arctic environments
(Doctoral thesis; Doktorgradsavhandling, 2023-03-17)Small copepods (≤ 2 mm) are highly abundant mesozooplankton in Arctic and sub-Arctic marine ecosystems. However, small copepods are generally underestimated in zooplankton studies because of the use of large-meshed nets (≥ 180-µm mesh size) and are relatively poorly studied compared to large copepods. This thesis investigates the egg hatching rates, population dynamics and production rates of three ... -
Statistical learning to estimate energy savings from retrofitting in the Norwegian food retail market
(Journal article; Tidsskriftartikkel; Peer reviewed, 2022-06-16)Buildings worldwide consume about 40% of all produced energy and are major contributors to GHG emissions. Hence, to reach the 2030 European energy efficiency target it is vital to reduce the energy consumption in buildings. An important barrier that hinders renovation projects is uncertainty regarding the expected savings. The main objective of this paper is to present two different statistical ... -
Physical–biological interactions underlying the connectivity patterns of coral-dependent fishes around the Arabian Peninsula
(Journal article; Tidsskriftartikkel; Peer reviewed, 2022-03-09)Aim: Distribution patterns of lineages alone do not explain the processes underlying phylogenetic differentiation in fishes observed around the Arabian Peninsula, whose hypotheses traditionally rely on (i) Pleistocene vicariance events, (ii) successive bottlenecks, (iii) recent founder effects (iv) and large spatial gradients in physical conditions. In this study, we test the hypothesis that ... -
A culture of cheating: The role of worldviews in preferences for honesty
(Journal article; Tidsskriftartikkel; Peer reviewed, 2021-12-11)We explore the role of cultural worldviews in preferences for honesty using a coin-flipping task in an online experiment. Two treatments are conducted, one in which cheating has only private benefits and one in which cheating benefits the public. While we find no differences in behavior by worldviews across treatments, we find that observed differences in dishonesty between genders is significantly ... -
When to stop searching in a highly uncertain world? A theoretical and experimental investigation of “two-way” sequential search tasks
(Journal article; Tidsskriftartikkel; Peer reviewed, 2022-09-13)When to stop exploring is crucial in contexts where learning to manage time and uncertainty is critical for carrying out successful initiatives (e.g., innovation, personnel recruitment, vaccine discovery). We investigate analytically and experimentally the exploration-exploitation trade-offs in such contexts. A “two-way” sequential search task is proposed, where the classical exploration-exploitation ... -
The Norwegian philosopher Peter Wessel Zapffe(1899-1990) and the Book of Job
(Journal article; Tidsskriftartikkel; Peer reviewed, 2022)https://www.dknvs.no/publikasjoner/skrifter/ -
A new species of the rare deep-sea genus Sciadonus Garman, 1899 (Teleostei, Bythitidae) from off Brazil, with a discussion of the evolution of troglomorphism and miniaturization in the aphyonid clade
(Journal article; Tidsskriftartikkel; Peer reviewed, 2022-12-16)A new species of the rare, deep-sea genus Sciadonus Garman, 1899 (Bythitidae) is described based on two specimens obtained by the Brazilian R/V Alpha Crucis on the continental slope off São Paulo State, Southeastern Brazil, western South Atlantic. It differs from its congeners by the combination of the following characters: body pale lacking dark pigmentation except for on female claspers; a pair ... -
Recent evolution of ancient Arctic leech relatives: systematics of Acanthobdellida
(Journal article; Tidsskriftartikkel; Peer reviewed, 2022-07-16)Acanthobdellida gnaw into the sides of salmonid fishes in frigid Arctic lakes and rivers, latching on with fearsome facial hooks. Sister to leeches, they are an ancient lineage with two described species. Unfortunately, Acanthobdellida are rarely collected, leading to a paucity of literature despite their unique morphology. Populations range from Eurasia to Alaska (USA), but few specimens of ... -
A new beardfish (Teleostei, Polymixiiformes) from the Eocene Fur Formation, Denmark
(Journal article; Tidsskriftartikkel; Peer reviewed, 2022-12-01)The earliest Eocene (Ypresian) Fur Formation (Denmark) is globally renowned for its exceptionally well-preserved fossils, including birds, sea turtles, insects, plants, andfishes. Fishes, albeit abundant and diverse, however, areonly superficially known and very few detailed, taxonomic studies have been realized to date. A new polymixiiformfish,Polyspinatusflueregen. et sp. nov., from the Fur Formation ... -
Species separation efficiency and effect of artificial lights with a horizonal grid in the Basque bottom trawl fishery
(Journal article; Tidsskriftartikkel; Peer reviewed, 2022-03-04)Achieving effective size selectivity for different species within a fishing gear is a major challenge in mixed fisheries. Fish behaviour may be exploited to separate species into separate codends where different selective properties can then be applied. Within the Basque bottom trawl fishery such a set-up has never been tested despite species with different behaviours being present. In this study, ... -
Effect of ground gear modification on bycatch of rays in mediterranean bottom trawl fishery
(Journal article; Tidsskriftartikkel; Peer reviewed, 2022-03-28)Bycatch of rays and skates in towed fishing gears represents one of the major threats to these relatively slow-growing marine species. The objective of this study was to modify ground gear in a bottom trawl fishery to increase the escape of these species during towing without associated loss of target catch. Sea trials were carried out with a research vessel in Mersin Bay, North-eastern Mediterranean. ... -
Mantle source heterogeneity in a Neoproterozoic back-arc basin: Geochemical and thermodynamic modeling of the volcanic section of Wadi Ghadir ophiolite, Egypt
(Journal article; Tidsskriftartikkel; Peer reviewed, 2021-12-02)Wadi Ghadir ophiolite in the Egyptian Eastern Desert, which forms the northern part of the Nubian Shield, is considered as one of the best-preserved segments of the Neoproterozoic oceanic lithosphere on Earth. Primary melt calculations and thermodynamic modeling of new geochemical data for the Wadi Ghadir pillow lavas and dike complexes, integrated with comprehensive petrographic investigations, are ... -
Lipids and diapause in Calanus spp. in a high-Arctic fjord: state-dependent strategies? Tracking lipids through the polar night
(Master thesis; Mastergradsoppgave, 2010-11-15)Calanus copepods C. finmarchicus, C. glacialis and C. hyperboreus are keystone species in the Arctic marine ecosystem, constituting 70-90% of the zooplankton biomass. In high latitudes, the growing season is short and unpredictable, and the winter long and unproductive. These species have adapted flexible life histories, lipid accumulation, and a state of deep-water diapause to survive. Winter ... -
Brucellosis seroprevalence in captive scimitar-horned oryx (Oryx dammah) in the United Arab Emirates and associated risk factors
(Journal article; Tidsskriftartikkel; Peer reviewed, 2022-08-01)Background: The scimitar‐horned oryx (Oryx dammah) (SHO) is a large African antelope that became extinct in the wild just over two decades ago. Conservation of the species is of prime importance, but it might face pathogen stressors.<p> <p>Methods and principal findings: Brucella melitensis biovar 1 was previously confirmed in a high‐density captive population of SHO held in Abu‐Dhabi emirate. ... -
Forest canopy resists plant invasions: a case study of Chromolaena odorata in Sal (Shorea robusta) forests of Nepal
(Journal article; Tidsskriftartikkel; Peer reviewed, 2022-01-07)Invasive alien species are a major threat to global biodiversity due to the tremendous ecological and economic damage they cause in forestry, agriculture, wetlands, and pastoral resources. Understanding the spatial pattern of invasive alien species and disentangling the biophysical drivers of invasion at the forest stand level is essential for managing forest ecosystems and the wider landscape. ... -
Monitoring Algal Blooms with Complementary Sensors on Multiple Spatial and Temporal Scales
(Journal article; Tidsskriftartikkel; Peer reviewed, 2023-01-19)Climate change, and other human-induced impacts, are severely increasing the intensity and occurrences of algal blooms in coastal regions (IPCC, 2022). Ocean warming, marine heatwaves, and eutrophication promote suitable conditions for rapid phytoplankton growth and biomass accumulation. An increase in such primary producers provides food for marine organisms, and phytoplankton play an important ...