Fakultet for biovitenskap, fiskeri og økonomi: Recent submissions
Now showing items 221-240 of 5171
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Betydning av tidspunkt og lengde av vintersignal i RAS for prestasjon i sjø ved utsett av stor smolt
(Research report; Forskningsrapport, 2023-12-01)Under kontrollerte forhold i kar var det en positiv effekt av et vintersignal kombinert med brakkvann i RAS på vekst etter overføring til sjøvann. Men et vintersignal ga også økt kjønnsmodning i hannfisk når fisken gikk lenge i RAS på kontinuerlig lys etter at vintersignalet var avsluttet. Kjønnsmodning ble redusert når fisken ble satt ut på lav sjøtemperatur. Resultatene fra utsett i sjømerder viste ... -
Different types of intuition at the workplace: an integrative review
(Journal article; Tidsskriftartikkel; Peer reviewed, 2023-08-16)To make good decisions, employees must manage their own intuitions and be able to anticipate decision-making in their work environment. How well this is accomplished has significant consequences for the workplace. A closer examination indicates that individuals utilize various types of intuition. People’s work context is frequently omitted from studies on the use of intuition, resulting in a ... -
The positive effect of plant diversity on soil carbon depends on climate
(Journal article; Tidsskriftartikkel; Peer reviewed, 2023-10-19)Little is currently known about how climate modulates the relationship between plant diversity and soil organic carbon and the mechanisms involved. Yet, this knowledge is of crucial importance in times of climate change and biodiversity loss. Here, we show that plant diversity is positively correlated with soil carbon content and soil carbon-to-nitrogen ratio across 84 grasslands on six continents ... -
Still Arctic? — The changing Barents Sea
(Journal article; Tidsskriftartikkel; Peer reviewed, 2023-11-13)The Barents Sea is one of the Polar regions where current climate and ecosystem change is most pronounced. Here we review the current state of knowledge of the physical, chemical and biological systems in the Barents Sea. Physical conditions in this area are characterized by large seasonal contrasts between partial sea-ice cover in winter and spring versus predominantly open water in summer and ... -
“An echo of our parents”: Norway’s Legal Reckoning with Underage NS Collaborators
(Chapter; Bokkapittel, 2023-12-04)On 18 June, 1945 ,a 15½ year old boy, O.A.E. (born1929), was brought before the Stjørdal and Verdal court of inquiry together with his father. Both had spent two days in Vollan circuit jail and six weeks in Falstad internment camp on suspicion of criminal treason, as they during the German occupation had been members of the collaborationist party Nasjonal Samling (NS). According to the newspaper ... -
Diffusive and advective cross-frontal fluxes of inorganic nutrients and dissolved inorganic carbon in the Barents Sea in autumn
(Journal article; Tidsskriftartikkel; Peer reviewed, 2023-11-21)The Atlantic Water, entering the Arctic through the Barents Sea and Fram Strait, is the main source of nutrients in the Arctic Ocean. The Barents Sea is divided by the Polar Front into an Atlantic-dominated domain in the south, and an Arctic-dominated domain in the north. The Polar Front is a thermohaline structure, which is topographically-steered at sub-surface, and influenced by the seasonal ... -
Carnobacteria in fish
(Journal article; Tidsskriftartikkel; Peer reviewed, 2023-11-19)Carnobacterium is a genus of Gram-positive bacteria, within family Carnobacteriaceae, and they are catalase- and oxidase-negative, non-sporing bacteria with properties such as CO<sup>2</sup> and L (+)- lactic acid production from glucose, but they are not able to grow on acetate agar. They are ubiquitous lactic acid bacteria and have been isolated from both cold and temperate environments, and ... -
Hydrography, inorganic nutrients and chlorophyll a linked to sea ice cover in the Atlantic Water inflow region north of Svalbard
(Journal article; Tidsskriftartikkel; Peer reviewed, 2023-11-04)Changes in the inflow of Atlantic Water (AW) and its properties to the Arctic Ocean bring more warm water, contribute to sea ice decline, promote borealisation of marine ecosystems, and affect biological and particularly primary productivity in the Eurasian Arctic Ocean. One of the two branches of AW inflow follows the shelf break north of Svalbard, where it dominates oceanographic conditions, ... -
Abrupt permafrost thaw triggers activity of copiotrophs and microbiome predators
(Journal article; Tidsskriftartikkel; Peer reviewed, 2023-10-05)Permafrost soils store a substantial part of the global soil carbon and nitrogen. However, global warming causes abrupt erosion and gradual thaw, which make these stocks vulnerable to microbial decomposition into greenhouse gases. Here, we investigated the microbial response to abrupt in situ permafrost thaw. We sequenced the total RNA of a 1 m deep soil core consisting of up to 26 500-year-old permafrost ... -
Atlantification influences zooplankton communities seasonally in the northern Barents Sea and Arctic Ocean
(Journal article; Tidsskriftartikkel; Peer reviewed, 2023-09-29)The Barents Sea is undergoing rapid ocean warming with less sea ice and increased Atlantic inflow, shifting the pelagic ecosystem towards a more boreal one, a process referred to as Atlantification. While such changes have already been documented in the southern and central Barents Sea, less is known about the degree of Atlantification in the northern Barents Sea and Arctic Ocean. In this seasonal ... -
Thinking and acting creatively for greater sustainability in academic conference tourism
(Journal article; Tidsskriftartikkel; Peer reviewed, 2023-11-21)Creative thinking is crucial to address the sustainability challenge of academic conferences. Adopting a creativity lens, we explored the low-carbon initiatives and actions associated with an organizational studies conference in Italy. We relied on an action research approach that involved implementing one of the initiatives included in the study, interviews with key informants, and secondary data. ... -
Fjernledelse i utdanningssektoren. Hvordan opplever og håndterer avstandsledete den psykologiske kontrakten?
(Master thesis; Mastergradsoppgave, 2023-05-31)Utdanningssektoren har vært preget av en rekke restruktureringer de siste årene, der fusjoneringer av tidligere selvstendige høyskoler og universiteter har medført at mange ansatte må ledes over store geografiske områder gjennom fjernledelse. Dette er tilfellet ved UiT Norges arktiske universitet, som består av elleve studiesteder i Nord-Norge med hovedcampus i Tromsø. <p> <p>Denne studien har ... -
Vertical Carbon Export in a Changing Arctic Seasonal Ice Zone: Composition and seasonality in the area north of Svalbard and in an Arctic glacial fjord
(Doctoral thesis; Doktorgradsavhandling, 2023-12-11)The ocean’s biological carbon pump (BCP) is a vital part of the global carbon cycle as it produces, transforms, and transfers organic carbon from the surface ocean to the deep. To model the oceans capacity to store carbon today and in the future, we need to understand these processes well. In the Eurasian Arctic, the marine ecosystems who control most of the BCP face a rapid decline in sea ice cover, ... -
A study of economic efficiency, adaptive measures to extreme climatic events, and drivers of disease in Vietnamese white leg shrimp aquaculture
(Doctoral thesis; Doktorgradsavhandling, 2023-12-08)This thesis delves into three key research areas centered on shrimp farming: evaluating operational efficiency in shrimp farming, analyzing adaptive choices made by farmers, and forecasting disease occurrences in shrimp farms in the context of evolving climate and environmental influences. The research employed a blend of methodologies derived from pertinent literature, coupled with data acquired ... -
The influence of prey distribution on marine top predator movements
(Doctoral thesis; Doktorgradsavhandling, 2023-12-08)Predation is an ecological process that relies on spatial and temporal co-occurrence of predators and their prey. In marine ecosystems, killer and humpback whales are considered sentinels of ecosystem health, given their critical roles as top predators in shaping marine food webs and their responsiveness to ecosystem changes. As they are seldom influenced by natural threats, they are model species ... -
Foundations of GAM Research. Methodological Guidelines for Designing and Conducting Research that Combines Games and Agent-based Models
(Doctoral thesis; Doktorgradsavhandling, 2023-12-04)<p>This thesis presents the development of the games and agent-based model methodology and provides methodological guidelines for using GAM research, i.e., combining games and agent-based models in research. <p>GAM research is rooted in complexity sciences and transdisciplinary research, offering valuable insights into complex, adaptable systems. GAM research has particular relevance in decision-making ... -
Holistic monitoring of freshwater and terrestrial vertebrates by camera trapping and environmental DNA
(Journal article; Tidsskriftartikkel; Peer reviewed, 2023-10-20)The anthropogenic impact on the world's ecosystems is severe and the need for non-invasive, cost-effective tools for monitoring and understanding those impacts are therefore urgent. Here, we combine two such methods in a comprehensive multi-year study; camera trapping (CT) and analysis of environmental DNA (eDNA), in river marginal zones of a temperate, wetland Nature Park in Denmark. CT was ... -
Praksisbasert utdanning - virkemiddel for å styrke entreprenørskap i rurale områder
(Journal article; Tidsskriftartikkel; Peer reviewed, 2023-10-05)Entreprenørskap er viktig for utviklingen i rurale regioner fordi det er et stort behov for å skape nye arbeidsplasser. Vår problemstilling er: Hvordan bidrar et akseleratorprogram til å møte behovene til oppstartsbedrifter i rurale regioner? I studien ønsker vi å frembringe et bilde av hvordan bedriftsdeltakere, eiere, prosjektledere og styringsgruppe opplever programmet. Vi konsentrerer oss om ... -
Horizon scanning of potential threats to high-Arctic biodiversity, human health and the economy from marine invasive alien species: A Svalbard case study
(Journal article; Tidsskriftartikkel; Peer reviewed, 2023-11-09)The high Arctic is considered a pristine environment compared with many other regions in the northern hemisphere. It is becoming increasingly vulnerable to invasion by invasive alien species (IAS), however, as climate change leads to rapid loss of sea ice, changes in ocean temperature and salinity, and enhanced human activities. These changes are likely to increase the incidence of arrival and ... -
New insights into the Barents Sea Calanus glacialis population dynamics and distribution
(Journal article; Tidsskriftartikkel; Peer reviewed, 2023-08-18)Arctic copepods are major grazers and vital food for planktivores in polar ecosystems but challenging to observe due to remoteness and seasonal sea ice coverage. Models offer higher spatio-temporal resolution, and individual-based models (IBMs) are useful since they incorporate individual variability which characterizes most copepod populations. Here, we present an IBM of the Arctic copepod Calanus ...