Artikler, rapporter og annet (arktisk og marin biologi): Nye registreringer
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Marine mammal consumption and fisheries removals in the Nordic and Barents Seas
(Journal article; Tidsskriftartikkel; Peer reviewed, 2022-05-28)In this study, we assess prey consumption by the marine mammal community in the northeast Atlantic [including 21 taxa, across three regions: (I) the Icelandic shelf, Denmark Strait, and Iceland Sea (ICE); (II) the Greenland and Norwegian Seas (GN); and (III) the Barents Sea (BS)], and compare mammal requirements with removals by fisheries. To determine prey needs, estimates of energetic requirements ... -
Chemosynthetic and photosynthetic trophic support from cold seeps in Arctic benthic communities
(Journal article; Tidsskriftartikkel; Peer reviewed, 2022-08-17)Benthic communities below the photic zone are largely reliant on the export of surface-water primary production and the flux of partially degraded organic matter to the seabed, i.e. pelagic−benthic coupling. Over the past decades, however, the role of chemosynthetically produced carbon in food webs has been recognized in various habitats. Cold seeps are now known to be widespread across circumpolar ... -
Horizontal and Vertical Migration of Anglerfish Lophius piscatorius in Relation to Hydrography in Faroese Waters
(Journal article; Tidsskriftartikkel; Peer reviewed, 2022-03-04)Adult anglerfish conduct annual migrations between spawning areas and feeding areas; for Faroese waters this migration has so far not been described. Therefore, anglerfish migration and distribution in Faroese waters was investigated by mark-recapture studies, including data storage tags, as well as data from scientific trawl surveys, commercial trawlers and gillnetters. The fish distribution was ... -
Mixed interactions among life history stages of two harvested related species
(Journal article; Tidsskriftartikkel; Peer reviewed, 2022-03-07)Climate change and harvesting can affect the ecosystems' functioning by altering the population dynamics and interactions among species. Knowing how species interact is essential for better understanding potentially unintended consequences of harvest on multiple species in ecosystems. I analyzed how stage-specific interactions between two harvested competitors, the haddock (Melanogrammus aeglefinus) ... -
A review of the scientific knowledge of the seascape off Dronning Maud Land, Antarctica
(Journal article; Tidsskriftartikkel; Peer reviewed, 2022-08-29)Despite the exclusion of the Southern Ocean from assessments of progress towards achieving the Convention on Biological Diversity (CBD) Strategic Plan, the Commission for the Conservation of Antarctic Marine Living Resources (CCAMLR) has taken on the mantle of progressing eforts to achieve it. Within the CBD, Aichi Target 11 represents an agreed commitment to protect 10% of the global coastal and ... -
Flavonoid biosynthesis is differentially altered in detached and attached ripening bilberries in response to spectral light quality
(Journal article; Tidsskriftartikkel; Peer reviewed, 2022-07-22)Light spectral quality is known to affect flavonoid biosynthesis during fruit ripening. However, the response of fruits to different light conditions, when ripening autonomously from the parent plant (detached), has been less explored. In this study, we analyzed the effect of light quality on detached and naturally ripening (attached) non-climacteric wild bilberry (Vaccinium myrtillus L.) fruits ... -
Deposit-feeding of Nonionellina labradorica (foraminifera) from an Arctic methane seep site and possible association with a methanotroph
(Journal article; Tidsskriftartikkel; Peer reviewed, 2022-08-30)Several foraminifera are deposit feeders that consume organic detritus (dead particulate organic material with entrained bacteria). However, the role of such foraminifera in the benthic food web remains understudied. Foraminifera feeding on methanotrophic bacteria, which are 13C-depleted, may cause negative cytoplasmic and/or calcitic δ13C values. To test whether the foraminiferal diet includes ... -
Gjøkvatn revisited: Repeated visual observations of plankton swarms in a subarctic forest lake
(Journal article; Tidsskriftartikkel; Peer reviewed, 2022-03-03)Distinct swarms of Bosmina longispina (Leydig, 1860) (Crustacea: Cladocera) were visually observed and described in Gjøkvatn, a Norwegian forest lake at 69°N, in 1969 and again in 1996 and 2021. The repeated observations after many years show that Bosmina swarms occur regularly in the lake. The swarming is likely to be an anti-predation behaviour against the predatory cladoceran Polyphemus pediculus ... -
Circum-Arctic distribution of chemical anti-herbivore compounds suggests biome-wide trade-off in defence strategies in Arctic shrubs
(Journal article; Tidsskriftartikkel; Peer reviewed, 2022-08-30)Spatial variation in plant chemical defence towards herbivores can help us understand variation in herbivore top–down control of shrubs in the Arctic and possibly also shrub responses to global warming. Less defended, non-resinous shrubs could be more influenced by herbivores than more defended, resinous shrubs. However, sparse field measurements limit our current understanding of how much of the ... -
Constructs of project programme management supporting open innovation at the strategic level of the organisation
(Journal article; Tidsskriftartikkel; Peer reviewed, 2022-03-19)The main aim of the article is to fill the gap concerning the recognition of constructs of programme management supporting open innovations. Current knowledge on this subject is mainly limited to identifying success factors of open innovation and programme management. In the current literature, there are few publications indicating the use of the programme as a tool supporting innovation. In ... -
Comparison Between Trophic Positions in the Barents Sea Estimated From Stable Isotope Data and a Mass Balance Model
(Journal article; Tidsskriftartikkel; Peer reviewed, 2022-03-04)The trophic position concept is central in system ecology, and in this study, trophic position (TP) estimates from stable-isotopes and an Ecopath mass-balance food web model for the Barents Sea were compared. Two alternative models for estimating TP from stable isotopes, with fixed or scaled trophic fractionation were applied. The massbalance model was parametrized and balanced for year 2000, was ... -
Spatial variation in mercury concentrations in polar bear (Ursus maritimus) hair from the Norwegian and Russian Arctic
(Journal article; Tidsskriftartikkel; Peer reviewed, 2022-02-02)We examined spatial variation in total mercury (THg) concentrations in 100 hair samples collected between 2008 and 2016 from 87 polar bears (Ursus maritimus) from the Norwegian (Svalbard Archipelago, western Barents Sea) and Russian Arctic (Kara Sea, Laptev Sea, and Chukchi Sea). We used latitude and longitude of home range centroid for the Norwegian bears and capture position for the Russian bears ... -
What are the effects of herbivore diversity on tundra ecosystems? A systematic review protocol
(Journal article; Tidsskriftartikkel; Peer reviewed, 2022-01-31)Background: Changes in the diversity of herbivore communities can strongly infuence the functioning of northern ecosystems. Diferent herbivores have diferent impacts on ecosystems because of diferences in their diets, behaviour and energy requirements. The combined efects of diferent herbivores can in some cases compensate each other but lead to stronger directional changes elsewhere. However, ... -
The importance of turbulent ocean–sea ice nutrient exchanges for simulation of ice algal biomass and production with CICE6.1 and Icepack 1.2
(Journal article; Tidsskriftartikkel; Peer reviewed, 2022-01-31)Different sea ice models apply unique approaches in the computation of nutrient diffusion between the ocean and the ice bottom, which are generally decoupled from the calculation of turbulent heat flux. A simple molecular diffusion formulation is often used. We argue that nutrient transfer from the ocean to sea ice should be as consistent as possible with heat transfer, since all of these fluxes ... -
Small Arctic rivers transport legacy contaminants from thawing catchments to coastal areas in Kongsfjorden, Svalbard
(Journal article; Tidsskriftartikkel; Peer reviewed, 2022-03-29)Decades of atmospheric and oceanic long-range transport from lower latitudes have resulted in deposition and storage of persistent organic pollutants (POPs) in Arctic regions. With increased temperatures, melting glaciers and thawing permafrost may serve as a secondary source of these stored POPs to freshwater and marine ecosystems. Here, we present concentrations and composition of legacy POPs in ... -
Down-regulation of the bacterial protein biosynthesis machinery in response to weeks, years, and decades of soil warming
(Journal article; Tidsskriftartikkel; Peer reviewed, 2022-03-25)How soil microorganisms respond to global warming is key to infer future soil-climate feedbacks, yet poorly understood. Here, we applied metatranscriptomics to investigate microbial physiological responses to mediumterm (8 years) and long-term (>50 years) subarctic grassland soil warming of +6°C. Besides indications for a community-wide up-regulation of centralmetabolic pathways and cell replication, ... -
Surface aggregations of Calanus finmarchicus during the polar night
(Journal article; Tidsskriftartikkel; Peer reviewed, 2022-03-16)While marine ecosystems in polar areas were thought to be mostly inactive during the polar night, recent observations in the Arctic highlight that dynamic biological interactions occur across all trophic levels. One particularly interesting observation made repeatedly is the occurrence of Calanus finmarchicus, a key species at the base of the food web, in the upper part of the water column in early ... -
International megabenthic long-term monitoring of a changing arctic ecosystem: Baseline results
(Journal article; Tidsskriftartikkel; Peer reviewed, 2021-11-24)The sustainable development and environmental protection of the Arctic ecosystem is on the agenda globally. The Convention of Biological Diversity (CBD) and the UN Sustainable Development Goals call for conserving at least 10 per cent of coastal and marine areas globally. Management tools to achieve this goal include marine protected areas (MPAs) and “other effective area-based conservation ... -
Reindeer behavioural ecology and use of pastures in pastoral livelihoods
(Chapter; Bokkapittel, 2022)Reindeer pastoralists have, for centuries, followed free-roaming animals throughout the Eurasian Arctic. The closing of national borders about a century ago forced the reindeer pastoralists to adapt to new conditions. Today, environmental conditions are changing rapidly with climate and land use change. Local history, migration and pasture use strategies of reindeer herding, and also the biogeography ... -
Academic development through a collective approach – introducing peer observation of teaching in a multidisciplinary faculty
(Journal article; Tidsskriftartikkel; Peer reviewed, 2022-06-03)Peer observation of teaching is seen as a significant feature of professional development in higher education, aiming to improve teaching and learning. This qualitative case study explores how peer observation can be introduced at a multidisciplinary faculty with STEM and business educations, identifying opportunities and challenges experienced when colleagues participate in peer observation. A peer ...