Fakultet for biovitenskap, fiskeri og økonomi: Nye registreringer
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Monitoring of environmental DNA from nonindigenous species of algae, dinoflagellates and animals in the North East Atlantic
(Journal article; Tidsskriftartikkel; Peer reviewed, 2022-01-14)Monitoring the distribution of marine non-indigenous species is a challenging task. To support this monitoring, we developed and validated the specificity of 12 primer-probe assays for detection of environmental DNA (eDNA) from marine species all non-indigenous to Europe. The species include sturgeons, a Pacific red algae, oyster thief, a freshwater hydroid from the Black Sea, Chinese mitten crab, ... -
Large scale patches of Calanus finmarchicus and associated hydrographic conditions off the Lofoten archipelago
(Journal article; Tidsskriftartikkel; Peer reviewed, 2021-12-24)Large swarms of individuals at different spatiotemporal scales characterise the distributions of many animal species. In the ocean several mesozooplankton taxa aggregate in large patches or swarms driven by active behavioural responses to hydrographic structures, although intrinsic biotic characteristics of species´life cycles not related with the environment can also affect spatial distributions. ... -
Estuarine molecular bycatch as a landscape-wide biomonitoring tool
(Journal article; Tidsskriftartikkel; Peer reviewed, 2021-08-13)Environmental DNA analysis is rapidly transforming biodiversity monitoring and bolstering conservation applications worldwide. This approach has been assisted by the development of metabarcoding PCR primers that are suited for detection of a wide range of taxa. However, little effort has gone into exploring the value of the non-target DNA sequences that are generated in every survey, but subsequently ... -
DnoisE: distance denoising by entropy. An open-source parallelizable alternative for denoising sequence datasets
(Journal article; Tidsskriftartikkel; Peer reviewed, 2022-01-19)DNA metabarcoding is broadly used in biodiversity studies encompassing a wide range of organisms. Erroneous amplicons, generated during amplification and sequencing procedures, constitute one of the major sources of concern for the interpretation of metabarcoding results. Several denoising programs have been implemented to detect and eliminate these errors. However, almost all denoising software ... -
The context of an emerging predation problem: Nenets reindeer herders and Arctic foxes in Yamal
(Journal article; Tidsskriftartikkel; Peer reviewed, 2021-05-12)Human-wildlife problems often arise when predators kill livestock. This can develop into serious conflicts between traditional pastoralists and other stakeholders, such as government officials and conservationists. In the Yamal Peninsula (Russia), nearly half of the indigenous Nenets people are reindeer herders. They have recently faced many challenges, such as high mortality of reindeer from pasture ... -
The Arctic fox (Vulpes lagopus L.) on the Kola Peninsula (Russia): silently disappearing in the mist of data deficiency?
(Journal article; Tidsskriftartikkel; Peer reviewed, 2021-04-02)The Arctic fox (Vulpes lagopus L.) population on the Kola Peninsula occupies an intermediate, and potentially connecting, position between foxes living on the Scandinavian Peninsula and populations further east in Russia, but very little is known about the status of this population. Here we summarize data from the literature, forgotten archival sources about research in the first half of the twentieth ... -
Dental evidence for variation in diet over time and space in the Arctic fox, Vulpes lagopus
(Journal article; Tidsskriftartikkel; Peer reviewed, 2021-02-16)Studies of the effects of variation in resource availability are important for understanding the ecology of high-latitude mammals. This paper examines the potential of dental evidence (tooth wear and breakage) as a proxy for diet and food choice in Vulpes lagopus, the Arctic fox. It presents a preliminary study of dental microwear, gross wear score, and tooth breakage in a sample (n = 78 individuals) ... -
Comparative Study of Lipid Content in Leptoclinus maculatus Postlarvae from Kongsfjord and Rjipfjord, Svalbard Archipelago
(Journal article; Tidsskriftartikkel; Peer reviewed, 2021-12-29)A comparative study of lipid profile of the daubed shanny <i>Leptoclinus maculatus</i> postlarvae from fjords of different domains (arctic-boreal Kongsfjord and high-arctic Rjipfjord) of Svalbard Archipelago waters in summer was performed. A more efficient accumulation of lipids in the fishes from Kongsfjord compared to Rjipfjord due to triacylglycerols and wax esters was established. These differences ... -
Sex steroid dynamics and mRNA transcript profiles of growth- and development-related genes during embryogenesis following induced follicular maturation in European eel
(Journal article; Tidsskriftartikkel; Peer reviewed, 2021-09-15)Hormones and mRNA transcripts of maternal origin deposited in the egg may affect early embryonic development in oviparous species. These hormones include steroids, such as estradiol-17β (E2), testosterone (T), 11-ketotestosterone (11-kt), 17α,20ß-dihydroxy-4-pregnen-3-one (DHP), and cortisol, which also play an important role in fish reproduction. In European eel, <i>Anguilla anguilla</i>, which ... -
Influence of human versus AI recommenders: The roles of product type and cognitive processes
(Journal article; Tidsskriftartikkel; Peer reviewed, 2021-08-16)Previous research suggests that consumers would listen more to product recommendations from other consumers (human recommenders) than from systems based on artificial intelligence (AI recommenders). We hypothesize that this might depend on the type of product being recommended, and propose an underlying process driving this effect. Three experiments show that, for hedonic products (but not for ... -
Strong and lasting impacts of past global warming on baleen whales and their prey
(Journal article; Tidsskriftartikkel; Peer reviewed, 2022-02-02)Global warming is affecting the population dynamics and trophic interactions across a wide range of ecosystems and habitats. Translating these real-time effects into their long-term consequences remains a challenge. The rapid and extreme warming period that occurred after the Last Glacial Maximum (LGM) during the Pleistocene–Holocene transition (7–12 thousand years ago) provides an opportunity ... -
Monitoring a changing Arctic: Recent advancements in the study of sea ice microbial communities
(Journal article; Tidsskriftartikkel; Peer reviewed, 2021-11-25)Sea ice continues to decline across many regions of the Arctic, with remaining ice becoming increasingly younger and more dynamic. These changes alter the habitats of microbial life that live within the sea ice, which support healthy functioning of the marine ecosystem and provision of resources for human-consumption, in addition to influencing biogeochemical cycles (e.g. air–sea CO<sub>2</sub> ... -
Growth rings show limited evidence for ungulates’ potential to suppress shrubs across the Arctic
(Journal article; Tidsskriftartikkel; Peer reviewed, 2022-02-22)Global warming has pronounced effects on tundra vegetation, and rising mean temperatures increase plant growth potential across the Arctic biome. Herbivores may counteract the warming impacts by reducing plant growth, but the strength of this effect may depend on prevailing regional climatic conditions. To study how ungulates interact with temperature to influence growth of tundra shrubs across ... -
Tourism actors’ engagement and logics of whale protection and conservation in Norway
(Journal article; Tidsskriftartikkel; Peer reviewed, 2021-12-17)The perception of activities that may harm whales and their coexistence with whale tourism can be problematic for a destination's attractiveness and its potential role in setting good standards for the sector and educating tourists. This research note investigates the online debate about the legitimacy of a research project on wild whales in Norway. In particular, it investigates the local tourism ... -
Climate warming impact on the deep demersal fish community East of Greenland
(Doctoral thesis; Doktorgradsavhandling, 2022-04-06)This thesis presents a study of the impact of climate warming on deep demersal fish communities East of Greenland, in a transition zone between Atlantic and Arctic waters. Climate change was expected to affect fish community composition and functional characterization via poleward distributional shifts and changes in abundance. To assess the climate driven effects on fish communities, I used long ... -
Do we choose differently after a discussion? Results from a deliberative valuation study in Ireland
(Journal article; Tidsskriftartikkel; Peer reviewed, 2021)A criticism against individual-based stated preference surveys is that people seldom make choices in social isolation. An approach used in response to this is deliberative valuation. We conduct a series of valuation workshops including a choice experiment. This involves providing respondents with information and opportunity to discuss. They made their choices individually both before and after the ... -
Pelagic food web structure in high nutrient low chlorophyll (HNLC) and naturally iron fertilized waters in the Kerguelen Islands region, Southern Ocean
(Journal article; Tidsskriftartikkel; Peer reviewed, 2021-08-19)The Kerguelen Plateau is a region of natural iron fertilization in the Southern Ocean, within the typically iron limited High Nutrient Low Chlorophyll (HNLC) waters of the eastward flowing Antarctic Circumpolar Current. Between 26 February and 19 March 2018, the MOBYDICK expedition investigated pelagic ecosystem dynamics in the Kerguelen Island region on the northern plateau during the post-phytoplankton ... -
Pulling mechanisms and pushing strategies: How to improve Ecosystem Advice Fisheries Management advice within the European Union’s Common Fisheries Policy
(Journal article; Tidsskriftartikkel; Peer reviewed, 2021-09-17)While European policies have progressed towards an Ecosystem Approach to Fisheries Management (EAFM), limited attention has been paid to the implications for its advisory system. This paper analyses the advisory landscape in the European Union (EU) by addressing two questions: to what extent can the needed advice be provided? how prepared is the management system to integrate ecosystem advice? We ... -
Patterns of Forming Entrepreneurial Intention: Evidence in Vietnam
(Journal article; Tidsskriftartikkel; Peer reviewed, 2021-03-26)The purpose of this study is to explore the direct and interaction effects of entrepreneurial events (feasibility and desirability) and perceived risk (opportunity and threat) on entrepreneurial intention in a transitional economy – Vietnam. The testing results show that perceived desirability and perceived feasibility have direct and interactive effects on entrepreneur intention. Risk as both threat ... -
How consumer innovativeness, technological expertise, and consideration set size can explain mobile commerce use: An extended understanding using a moderation–mediation model.
(Journal article; Tidsskriftartikkel; Peer reviewed, 2021-04-12)This study integrates consumer innovativeness (CI) and technological expertise (TE) in consumer attitudes and mobile commerce use (MCU) and introduces consumer consideration set size (CSS) as a moderator and a mediator of these relationships. Based on a survey sample of 577 Vietnamese consumers, it uses a structural equation modelling approach to test the hypotheses. The findings show that attitudes, ...