Fakultet for biovitenskap, fiskeri og økonomi: Recent submissions
Now showing items 501-520 of 5173
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Revisiting the footprints of climate change in Arctic marine food webs: An assessment of knowledge gained since 2010
(Journal article; Tidsskriftartikkel; Peer reviewed, 2023-01-30)In 2011, a first comprehensive assessment of the footprints of climate change on Arctic marine ecosystems (such as altered distribution ranges, abundances, growth and body conditions, behaviours and phenologies, as well as community and regime shifts) was published. Here, we re-assess the climate-driven impacts reported since then, to elucidate to which extent and how observed ecological footprints ... -
Oil price volatility and new evidence from news and Twitter
(Journal article; Tidsskriftartikkel; Peer reviewed, 2023-05-05)In this paper, we develop semantic-based sentiment indices through relevant news and Twitter feeds for oil market using a state-of-the-art natural language processing technique. We investigate the predictability of crude oil price volatility using the novel sentiment indices through a hybrid structure consisting of generalized autoregressive conditional heteroskedasticity and bidirectional long ... -
Consequences of cross-season demographic correlations for population viability
(Journal article; Tidsskriftartikkel; Peer reviewed, 2023-07-12)Demographic correlations are pervasive in wildlife populations and can represent important secondary drivers of population growth. Empirical evidence suggests that correlations are in general positive for long-lived species, but little is known about the degree of variation among spatially segregated populations of the same species in relation to environmental conditions. We assessed the relative ... -
European marine omics biodiversity observation network: a strategic outline for the implementation of omics approaches in ocean observation
(Journal article; Tidsskriftartikkel; Peer reviewed, 2023-05-18)Marine ecosystems, ranging from coastal seas and wetlands to the open ocean, accommodate a wealth of biological diversity from small microorganisms to large mammals. This biodiversity and its associated ecosystem function occurs across complex spatial and temporal scales and is not yet fully understood. Given the wide range of external pressures on the marine environment, this knowledge is crucial ... -
The role of water mass advection in staging of the Southern Ocean Salpa thompsoni populations
(Journal article; Tidsskriftartikkel; Peer reviewed, 2023-05-01)Salpa thompsoni is an important grazer in the Southern Ocean. Their abundance in the western Antarctic Peninsula is highly variable, varying by up to 5000-fold inter-annually. Here, we use a particle-tracking model to simulate the potential dispersal of salp populations from a source location in the Antarctic Circumpolar Current (ACC) to the Palmer Long Term Ecological Research (PAL LTER) study ... -
Tissue distribution of angiotensin-converting enzyme 2 (ACE2) receptor in wild animals with a focus on artiodactyls, mustelids and phocids
(Journal article; Tidsskriftartikkel; Peer reviewed, 2023-01-25)Natural cases of zooanthroponotic transmission of SARS-CoV-2 to animals have been reported during the COVID-19 pandemic, including to free-ranging white-tailed deer (<i>Odocoileus virginianus</i>) in North America and farmed American mink (<i>Neovison vison</i>) on multiple continents. To understand the potential for angiotensin-converting enzyme 2 (ACE2)-mediated viral tropism we characterised the ... -
A simple method to isolate fatty acids and fatty alcohols from wax esters in a wax-ester rich marine oil
(Journal article; Tidsskriftartikkel; Peer reviewed, 2023-05-12)Calanus finmarchicus is one of the most important zooplankton species in the North Atlantic. The zooplankton is currently being harvested and industrially processed to a marine oil product for human consumption as a marine nutraceutical containing long-chain omega-3 polyunsaturated fatty acids. This oil is very rich in wax esters, a lipid class where fatty acids are esterified to long chain fatty ... -
Thermal acclimation of methanotrophs from the genus Methylobacter
(Journal article; Tidsskriftartikkel; Peer reviewed, 2023-01-18)Methanotrophs oxidize most of the methane (CH<sub>4</sub>) produced in natural and anthropogenic ecosystems. Often living close to soil surfaces, these microorganisms must frequently adjust to temperature change. While many environmental studies have addressed temperature effects on CH<sub>4</sub> oxidation and methanotrophic communities, there is little knowledge about the physiological adjustments ... -
The nature of entrepreneurs’ engagement with a layered rural context
(Journal article; Tidsskriftartikkel; Peer reviewed, 2023-01-22)Rural entrepreneurship has recently been reconceptualised as engagement with contexts. However, our knowledge of the nature of this engagement remains limited. In this paper, we explore the engagement of entrepreneurs hired as part-time industry mentors at regional universities. Using a qualitative approach based on grounded theory and self-ethnography, we interviewed five entrepreneurs in adjunct ... -
Green entrepreneuring in tourism experience for behaviour change
(Chapter; Bokkapittel, 2023)Tourism entrepreneurs have the responsibility to adopt and promote more sustainable behaviours. By drawing on the understanding of entrepreneurship as practice and focusing on environmental sustainability, this chapter explores the case of an ecotourism company and its experience design process for behaviour change. This process is conceptualised as a complex entrepreneurial practice composed ... -
Resource competition drives an invasion-replacement event among shrew species on an island
(Journal article; Tidsskriftartikkel; Peer reviewed, 2023-01-08)Invasive mammals are responsible for the majority of native species extinctions on islands. While most of these extinction events will be due to novel interactions between species (e.g. exotic predators and naive prey), it is more unusual to find incidences where a newly invasive species causes the decline/extinction of a native species on an island when they normally coexist elsewhere in their ... -
No observed developmental effects in early life stages of capelin (Mallotus villosus) exposed to a water-soluble fraction of crude oil during embryonic development
(Journal article; Tidsskriftartikkel; Peer reviewed, 2023-05-12)The rise in offshore oil and gas operations, maritime shipping, and tourism in northern latitudes enhances the risk of oil spills to sub-Arctic and Arctic coastal environments. Therefore, there is a need to understand the potential adverse effects of petroleum on key species in these areas. Here, we investigated the effects of oil exposure on the early life stages of capelin (Mallotus villosus), ... -
Roles for advisory science in the International Council for the Exploration of the Sea (ICES)
(Journal article; Tidsskriftartikkel; Peer reviewed, 2023-01-12)What role should science take when providing advice in support of policy and politics? Should a provider of science-based advice have its own position on the issues it provides advise on? Or should it be as impartial as possible from the value and policy context of the advice? This theme, long debated, gained new attention in fisheries and marine governance. Starting from theoretical concepts and ... -
Co-learning through participatory evaluation: an example using Theory of Change in a large-scale EU-funded tourism intervention
(Journal article; Tidsskriftartikkel; Peer reviewed, 2023-06-24)Tourism interventions, as tools for social change and preservation of natural and cultural assets are inherently complex. This study presents an improved method for the evaluation of complex tourism interventions. We argue that participatory methods can promote a culture of evaluation that supports partners throughout evidencing project impacts, eliminating negative attitudes to evaluation ... -
A new deep-sea eelpout of the genus Pyrolycus (Teleostei: Zoarcidae) associated with a hydrothermal seep on the Pacific margin of Costa Rica
(Journal article; Tidsskriftartikkel; Peer reviewed, 2023-01-19)A new species of the zoarcid genus Pyrolycus Machida & Hashimoto, 2002, Pyrolycus jaco sp. nov., is described from a hydrothermal seep environment named Jacó Scar in the eastern Pacific of Costa Rica. Four specimens were collected in 2018 between 1746–1795 m among tubeworm colonies around the seep. The new species is differentiated from its two western Pacific congeners by having a shorter head, ... -
Evaluating policy complexity with Causal Loop Diagrams
(Journal article; Tidsskriftartikkel; Peer reviewed, 2023-05-15)Methods to capture the complexity of using policy instruments would allow us to better evaluate the reasons for their effectiveness. Drawing from complexity science, we produce a Causal Loop Diagram to analyse the implementation of two informational policy instruments in a tourism destination: the Global Sustainable Tourism Council criteria and the European Tourism Indicator Scheme. To interpret the ... -
Global analysis of seasonal changes in trematode infection levels reveals weak and variable link to temperature
(Journal article; Tidsskriftartikkel; Peer reviewed, 2023-06-26)Seasonal changes in environmental conditions drive phenology, i.e., the annual timing of biological events ranging from the individual to the ecosystem. Phenological patterns and successional abundance cycles have been particularly well studied in temperate freshwater systems, showing strong and predictable synchrony with seasonal changes. However, seasonal successional changes in the abundance ... -
Global analysis of seasonal changes in trematode infection levels reveals weak and variable link to temperature
(Journal article; Tidsskriftartikkel; Peer reviewed, 2023-06-26)Seasonal changes in environmental conditions drive phenology, i.e., the annual timing of biological events ranging from the individual to the ecosystem. Phenological patterns and successional abundance cycles have been particularly well studied in temperate freshwater systems, showing strong and predictable synchrony with seasonal changes. However, seasonal successional changes in the abundance ... -
Thermal modeling of the respiratory turbinates in arctic and subtropical seals
(Journal article; Tidsskriftartikkel; Peer reviewed, 2023-01-06)Mammals possess complex structures in their nasal cavities known as respiratory turbinate bones, which help the animal to conserve body heat and water during respiratory gas exchange. We considered the function of the maxilloturbinates of two species of seals, one arctic (<i>Erignathus barbatus</i>), one subtropical (<i>Monachus monachus</i>). By means of a thermo-hydrodynamic model that describes ... -
Modulation of defense genes and phenolic compounds in wild blueberry in response to Botrytis cinerea under field conditions
(Journal article; Tidsskriftartikkel; Peer reviewed, 2023-02-28)Botrytis blight is an important disease of wild blueberry [<i>(Vaccinium angustifolium (Va)</i> and <i>V. myrtilloides (Vm)</i>)] with variable symptoms in the field due to differences in susceptibility among blueberry phenotypes. Representative blueberry plants of varying phenotypes were inoculated with spores of <i> B. cinerea </i>. The relative expression of pathogenesis-related genes (<i>PR3, ...