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norskFakultet for biovitenskap, fiskeri og økonomi: Recent submissions
Now showing items 741-760 of 5173
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Macrozooplankton and micronekton diversity and associated carbon vertical patterns and fluxes under distinct productive conditions around the Kerguelen Islands
(Journal article; Tidsskriftartikkel; Peer reviewed, 2022-10-13)Mesopelagic communities are characterized by a large biomass of diverse macrozooplankton and micronekton (MM) performing diel vertical migration (DVM) connecting the surface to the deeper ocean and contributing to biogeochemical fluxes. In the Southern Ocean, a prominent High Nutrient Low Chlorophyll (HNLC) and low carbon export region, the contribution of MM to the vertical carbon flux of the ... -
Impacts of Nile tilapia cage culture on water and bottom sediment quality: The ability of an eutrophic lake to absorb and dilute perturbations
(Journal article; Tidsskriftartikkel; Peer reviewed, 2022-11-07)Environmentally sustainable aquaculture depends on accurate understanding of the impacts of aquaculture-derived organic matter (AOM) and the ability of aquaculture systems to absorb and dilute perturbations. To this end, the present study assessed the impacts of AOM from cage culture of Nile tilapia on the ecology of Lake Victoria, Kenya, using fish cages near Anyanga Beach in Siaya County from ... -
Mucosal Environment Induces Phage Susceptibility in Streptococcus mutans
(Journal article; Tidsskriftartikkel; Peer reviewed, 2022-09-19)Pathogenic bacteria are attracted toward mucosa, as it is their way of entry into the body. However, we know surprisingly little about the phage-bacterium interactions in the mucosal environment. Here, we explored the effect of the mucosal environment on growth characteristics and phage-bacterium interactions in Streptococcus mutans, a causative agent of dental caries. We found that although mucin ... -
Global Patterns and Controls of Nutrient Immobilization on Decomposing Cellulose in Riverine Ecosystems
(Journal article; Tidsskriftartikkel; Peer reviewed, 2022-02-18)Microbes play a critical role in plant litter decomposition and influence the fate of carbon in rivers and riparian zones. When decomposing low-nutrient plant litter, microbes acquire nitrogen (N) and phosphorus (P) from the environment (i.e., nutrient immobilization), and this process is potentially sensitive to nutrient loading and changing climate. Nonetheless, environmental controls on immobilization ... -
The Role of Internal Legitimacy in Shifting a Large Established Company Towards Sustainability. A Case Study of a Sustainable Transition Shift in the Oil and Gas Industry
(Doctoral thesis; Doktorgradsavhandling, 2023-02-16)<p>This thesis is motivated by the need to involve sustainability in the oil and gas industry. This thesis focuses on the sustainable transition in Equinor, the Norwegian oil and gas company. It looks, particularly, at a large established oil and gas company undergoing a sustainable change and how it performs its transition into sustainability. However, this transition poses challenges to a large ... -
The rapid spread of the girdled snail Hygromia cinctella in New Zealand (Gastropoda: Helicoidea)
(Journal article; Tidsskriftartikkel; Peer reviewed, 2022)The girdled snail Hygromia cinctella originates from southern Europe but has been introduced to countries in northern Europe and, more recently, to Aotearoa New Zealand. In the latter country, the girdled snail was first noted in 2015 in Wellington, but it has since spread to other regions of the North Island. We report here the rapid spread of this exotic species in New Zealand and record its ... -
Food and chemical substances relevant for monitoring - Scientific Opinion of the Scientific Steering Committee of the Norwegian Scientific Committee for Food and Environment
(Research report; Forskningsrapport, 2022-06-09) -
Matproduksjon, mattrygghet og miljø - innspill om kunnskapsbehov til gjennomføringen av det grønne skiftet - Uttalelse fra hovedkomiteen i Vitenskapskomiteen for mat og miljø (VKM)
(Research report; Forskningsrapport, 2022-11-22) -
Global maps of soil temperature
(Journal article; Tidsskriftartikkel; Peer reviewed, 2021-12-29)Research in global change ecology relies heavily on global climatic grids derived from estimates of air temperature in open areas at around 2 m above the ground. These climatic grids do not reflect conditions below vegetation canopies and near the ground surface, where critical ecosystem functions occur and most terrestrial species reside. Here, we provide global maps of soil temperature and bioclimatic ... -
DNA metabarcoding reveals the importance of gelatinous zooplankton in the diet of Pandalus borealis, a keystone species in the Arctic
(Journal article; Tidsskriftartikkel; Peer reviewed, 2021-12-22)Information about the dietary composition of a species is crucial to understanding their position and role in the food web. Increasingly, molecular approaches such as DNA metabarcoding are used in studying trophic relationships, not least because they may alleviate problems such as low taxonomic resolution or underestimation of digestible taxa in the diet. Here, we used DNA metabarcoding with ... -
Polar bear harvest patterns across the circumpolar Arctic
(Journal article; Tidsskriftartikkel; Peer reviewed, 2022-05-12)Wildlife harvest remains a conservation concern for many species and assessing patterns of harvest can provide insights on sustainability and inform management. Polar bears (Ursus maritimus) are harvested over a large part of their range by local people. The species has a history of unsustainable harvest that was largely rectified by an international agreement that required science-based management. ... -
Spatial distribution of Dechlorane Plus and dechlorane related compounds in European background air
(Journal article; Tidsskriftartikkel; Peer reviewed, 2023-01-10)The highly chlorinated chemical Dechlorane Plus (DP) was introduced as a replacement flame retardant for Mirex, which is banned through the Stockholm Convention (SC) for its toxicity (T), environmental persistence (P), potential for bioaccumulation (B) and long-range environmental transport potential (LRETP). Currently, Dechlorane Plus is under consideration for listing under the Stockholm Convention ... -
A combined microbial and biogeochemical dataset from high-latitude ecosystems with respect to methane cycle.
(Journal article; Tidsskriftartikkel; Peer reviewed, 2022-11-04)High latitudes are experiencing intense ecosystem changes with climate warming. The underlying methane (CH<sub>4</sub>) cycling dynamics remain unresolved, despite its crucial climatic feedback. Atmospheric CH<sub>4</sub> emissions are heterogeneous, resulting from local geochemical drivers, global climatic factors, and microbial production/consumption balance. Holistic studies are mandatory to ... -
Draft genome sequence data of a psychrophilic tundra soil methanotroph, Methylobacter psychrophilus Z-0021 (DSM 9914).
(Journal article; Tidsskriftartikkel; Peer reviewed, 2022-10-21)Psychrophilic methanotrophic bacteria are abundant and play an important role in methane removal in cold methanogenic environments, such as boreal and arctic terrestrial and aquatic ecosystems. They could be also applied in the bioconversion of biogas and natural gas into value-added products (e.g., chemicals and single-cell protein) in cold regions. Hence, isolation and genome sequencing of ... -
People do care about the deep sea. A comment on Jamieson et al. (2020)
(Journal article; Tidsskriftartikkel; Peer reviewed, 2022-09-23)In a paper in this journal entitled “Fear and loathing of the deep sea: why don’t people care about the deep sea?”, Jamieson et al. (2020) pose this question and answer it with many interesting perspectives from psychology, ocean literacy and philosophy. However, there is an inherent assumption in the question they ask that people do not care about the deep sea. In order to assess this assumption, ... -
Insights into sugar metabolism during bilberry (Vaccinium myrtillus L.) fruit development
(Journal article; Tidsskriftartikkel; Peer reviewed, 2022-03-03)Bilberry fruit is regarded as one of the best natural sources of anthocyanins and iswidely explored for its health-beneficial compounds. Besides anthocyanins, one of themajor attributes that determine the berry quality is the accumulation of sugars thatprovide sweetness and flavor to ripening fruit. In this study, we have identified 25 sugarmetabolism-related genes in bilberry, including invertases ... -
Metabarcoding reveals high-resolution biogeographical and metaphylogeographical patterns through marine barriers
(Journal article; Tidsskriftartikkel; Peer reviewed, 2022-12-29)Aim: It has been predicted that there should be concordance between biogeographical and phylogeographical processes structuring multi-species regional assemblages. We hypothesise that oceanographic barriers in the marine environment affect concomitantly the distribution and the connectivity of the marine biota, thus producing congruent biogeographical and phylogeographical structures. We also ... -
Identifying seasonal distribution patterns of fin whales across the Scotia Sea and the Antarctic Peninsula region using a novel approach combining habitat suitability models and ensemble learning methods
(Journal article; Tidsskriftartikkel; Peer reviewed, 2022-12-16)Following their near extirpation by industrial whaling of the 20th century, the population status of Southern Hemisphere fin whales (SHFW) remains unknown. Systematic surveys estimating fin whale abundance in the Southern Ocean are not yet available. Records of fin whale sightings have been collected by a variety of organisations over the past few decades, incorporating both opportunistic data and ...
