• A.D. McIntyre (ed) : book review : Life in the world's oceans - diversity, distribution and abundance. 

      Jobling, Malcolm (Journal article; Tidsskriftartikkel; Peer reviewed, 2011)
    • Abrupt permafrost thaw triggers activity of copiotrophs and microbiome predators 

      Scheel, Maria; Zervas, Athanasios; Rijkers, Ruud; Tveit, Alexander Tøsdal; Ekelund, Flemming; Campuzano Jiménez, Francisco; Christensen, Torben R.; Jacobsen, Carsten S. (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 ...
    • Abscisic acid regulates anthocyanin biosynthesis and gene expression associated with cell wall modification in ripening bilberry (vaccinium myrtillus l.) fruits 

      Karppinen, Katja Hannele; Tegelberg, Pinja; Häggman, Hely; Jaakola, Laura (Journal article; Tidsskriftartikkel; Peer reviewed, 2018-08-29)
      Ripening of non-climacteric bilberry (Vaccinium myrtillus L.) fruit is characterized by a high accumulation of health-beneficial anthocyanins. Plant hormone abscisic acid (ABA) and sucrose have been shown to be among the central signaling molecules coordinating non-climacteric fruit ripening and anthocyanin accumulation in some fruits such as strawberry. Our earlier studies have demonstrated an ...
    • Academic development through a collective approach – introducing peer observation of teaching in a multidisciplinary faculty 

      Sundset, Monica Alterskjær; Sandvoll, Ragnhild (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 ...
    • Acceptance of near-natural greenspace management relates to ecological and socio-cultural assigned values among European urbanites 

      Lampinen, Jussi; Tuomi, Maria; Bucharova, Anna; Cancellieri, Laura; Casado-Arzuaga, Izaskun; Deák, Balázs; Eriksson, Ove; Fernández de Manuel, Beatriz; Filibeck, Goffredo; Kowarik, Ingo; Pons, Xavier; Schröder, Roland; Sperandii, Marta Gaia; Valkó, Orsolya (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-10-31)
      Grasslands are widespread elements of urban greenspace providing recreational, psychological and aesthetic benefits to city residents. Two urban grassland types of contrasting management dominate urban greenspaces: frequently mown, species-poor short-cut lawns and less intensively managed, near-natural tall-grass meadows. The higher conservation value of tall-grass meadows makes management interventions ...
    • Acclimation of circadian rhythms in woodland strawberries (Fragaria vesca L.) to Arctic and mid-latitude photoperiods 

      Faehn, Corine Alexis; Reichelt, Michael; Mithöfer, Axel; Hytönen, Timo; Mølmann, Jørgen Alexander Barosen; Jaakola, Laura Elina (Journal article; Tidsskriftartikkel; Peer reviewed, 2023-10-10)
      Background Though many abiotic factors are constantly changing, the photoperiod is a predictable factor that enables plants to time many physiological responses. This timing is regulated by the circadian clock, yet little is known about how the clock adapts to the differences in photoperiod between mid-latitudes and high latitudes. The primary objective of this study was to compare how clock gene ...
    • Accounting for food web dynamics when assessing the impact of mesopredator control on declining prey populations 

      Henden, John-André; Ehrich, Dorothee; Soininen, Eeva Marjatta; Ims, Rolf Anker (Journal article; Tidsskriftartikkel; Peer reviewed, 2021-01-06)
      <p>1. Increasing populations of mesopredators are suspected to cause declines in vulnerable wildlife to the extent that mesopredator decimation actions (culling) have become commonplace. Design constraints, especially a lack of spatial replication, often hamper the assessment of the impact of such actions. However, extensive temporal replication (i.e. time series) and accounting for potentially ...
    • Activity of xyloglucan endotransglucosylases/hydrolases suggests a role during host invasion by the parasitic plant Cuscuta reflexa 

      Olsen, Stian; Krause, Kirsten (Journal article; Tidsskriftartikkel; Peer reviewed, 2017-04-27)
      The parasitic vines of the genus Cuscuta form haustoria that grow into other plants and connect with their vascular system, thus allowing the parasite to feed on its host. A major obstacle that meets the infection organ as it penetrates the host tissue is the rigid plant cell wall. In the present study, we examined the activity of xyloglucan endotransglucosylases/hydrolases (XTHs) during the ...
    • Activity patterns in mammals: Circadian dominance challenged 

      Hazlerigg, David; Tyler, Nicholas J. C. (Journal article; Tidsskriftartikkel; Peer reviewed, 2019-07-15)
      The evidence that diel patterns of physiology and behaviour in mammals are governed by circadian ‘clocks’ is based almost entirely on studies of nocturnal rodents. The emergent circadian paradigm, however, neglects the roles of energy metabolism and alimentary function (feeding and digestion) as determinants of activity pattern. The temporal control of activity varies widely across taxa, and ungulates, ...
    • Adaptive flexibility in the feeding behaviour of brown trout: optimal prey size 

      Sanchez-Hernandez, Javier; Cobo, Fernando (Journal article; Tidsskriftartikkel; Peer reviewed, 2015-02-18)
      Background Brown trout, Salmo trutta Linnaeus, 1758, is a species of significant conservation and socio-economic importance. A consequence of this importance is the enormous amount of literature that has been published on the species in the last few decades. In general terms, brown trout has been considered as a size-selective predator, even though it is able to feed on a wide range of prey sizes. ...
    • Adaptive niche-based sampling to improve ability to find rare and elusive species: Simulations and field tests 

      Chiffard, Jules; Marciau, Coline; Yoccoz, Nigel; Mouillot, Florent; Duchateau, Stéphane; Nadeau, Iris; Fontanilles, Philippe; Besnard, Aurélien (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-04-27)
      <ol> <li>Sampling efficiency is crucial to overcome the data crisis in biodiversity and to understand what drives the distribution of rare species.</li <li>Adaptive niche‐based sampling (ANBS) is an iterative sampling strategy that relies on the predictions of species distribution models (SDMs). By predicting highly suitable areas to guide prospection, ANBS could improve the efficiency of sampling ...
    • The adaptive significance of chromatophores in the Arctic under-ice amphipod Apherusa glacialis 

      Fuhrmann, Mona Maria; Nygård, Henrik Andreas; Krapp, Rupert; Berge, Jørgen; Werner, Iris (Journal article; Tidsskriftartikkel; Peer reviewed, 2011)
      Solar radiation is a crucial factor governing biological processes in polar habitats. Containing harmful ultraviolet radiation (UVR), it can pose a threat for organisms inhabiting surface waters of polar oceans. The present study investigated the physiological color change in the obligate sympagic amphipod Apherusa glacialis mediated by red-brown chromatophores, which cover the body and internal ...
    • Adaptive temperature regulation in the little bird in winter: predictions from a stochastic dynamic programming model 

      Brodin, Anders; Nilsson, Jan‑Åke; Nord, Andreas (Journal article; Tidsskriftartikkel; Peer reviewed, 2017-08-03)
      Several species of small birds are resident in boreal forests where environmental temperatures can be −20 to −30 °C, or even lower, in winter. As winter days are short, and food is scarce, winter survival is a challenge for small endothermic animals. A bird of this size will have to gain almost 10% of its lean body mass in fat every day to sustain overnight metabolism. Birds such as parids (titmice ...
    • Advantages and Limitations of Using Mobile Apps for Protected Area Monitoring and Management 

      Muñoz, Lorena; Hausner, Vera Helene; Monz, Christopher (Journal article; Tidsskriftartikkel; Peer reviewed, 2019-02-18)
      Digital technologies, including participatory Internet mapping, social media and smartphones, provide new avenues for research in outdoor recreation and tourism. The potential to reach a greater audience and collect visitation data on a broader scale, with less costs than traditional paper surveys, are key advantages that have increased the use of these novel technologies. Using of mobile apps for ...
    • Advection of Mesozooplankton Into the Northern Svalbard Shelf Region 

      Wassmann, Paul; Slagstad, Dag; Ellingsen, Ingrid H. (Journal article; Tidsskriftartikkel; Peer reviewed, 2019-08-14)
      The northern Svalbard shelf region is part of the Atlantic advective contiguous domain along which nutrients, phyto- and mesozooplankton are advected with Atlantic Water from the Norwegian Sea along the Norwegian shelf break and into the Arctic Ocean. By applying the SINMOD model, we investigated how much mesozooplankton may be advected into the northern Svalbard shelf region. We also compared this ...
    • The advective origin of an under-ice spring bloom in the Arctic Ocean using multiple observational platforms 

      Johnsen, Geir; Norli, Marit; Moline, Mark A.; Robbins, Ian; Quillfeldt, Cecilie von; Sørensen, Kai; Cottier, Finlo Robert; Berge, Jørgen (Journal article; Tidsskriftartikkel; Peer reviewed, 2018-02-13)
      Under-ice blooms of phytoplankton in the Chukchi Sea have been observed, with strong implications for our understanding of the production regimes in the Arctic Ocean. Using a combination of satellite remote sensing of phytoplankton biomass, in situ observations under sea ice from an autonomous underwater vehicle (AUV), and in vivo photophysiology, we examined the composition, magnitude and origin ...
    • Age class composition and growth of Atlantic cod (Gadus morhua) in the shallow water zone of Kongsfjorden, Svalbard 

      Brand, Markus; Spotowitz, Lisa; Mark, Felix; Berge, Jørgen; Langhelle, Erlend; Weslawski, Jan Marcin; Godiksen, Jane Aanestad; Fischer, Philipp (Journal article; Tidsskriftartikkel; Peer reviewed, 2022-12-26)
      Although Atlantic cod has been observed in Svalbard waters since the 1880s, knowledge about the presence in the Arctic shallow water zone is limited. The regular catch of juvenile Atlantic cod in Kongs orden since 2008 is in line with an overall northward shift of boreal fish species toward the Arctic. This is the first study showing the age class composition, growth rates, and stomach content ...
    • Age-dependent genetic structure of arctic foxes in Svalbard 

      Ehrich, Dorothee; Carmichael, Lindsey; Fuglei, Eva (Journal article; Tidsskriftartikkel; Peer reviewed, 2012)
    • Aggregate feeding by the copepods Calanus and Pseudocalanus controls carbon flux attenuation in the Arctic shelf sea during the productive period 

      van der Jagt, Helga; Wiedmann, Ingrid; Hildebrandt, Nicole; Niehoff, Barbara; Iversen, Morten H. (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-09-24)
      Up to 95% of the oceanic primary production is recycled within the upper few hundred meters of the water column. Marine snow and zooplankton fecal pellets in the upper water column are often recycled at rates exceeding those measured for microbial degradation, suggesting that zooplankton might be important for flux attenuation of particulate organic carbon in the upper ocean. However, direct evidence ...
    • Algal hot spots in a changing Arctic Ocean: Sea-ice ridges and the snow-ice interface 

      Fernández-Méndez, Mar; Olsen, Lasse Mork; Kauko, Hanna M.; Meyer, Amelie; Rösel, Anja; Merkouriadi, Ioanna; Mundy, Christopher John; Ehn, Jens K.; Johansson, Malin; Wagner, Penelope Mae; Ervik, Åse; Sorrell, BK; Duarte, Pedro; Wold, Anette; Hop, Haakon; Assmy, Phillipp (Journal article; Tidsskriftartikkel; Peer reviewed, 2018-03-12)
      During the N-ICE2015 drift expedition north-west of Svalbard, we observed the establishment and development of algal communities in first-year ice (FYI) ridges and at the snow-ice interface. Despite some indications of being hot spots for biological activity, ridges are under-studied largely because they are complex structures that are difficult to sample. Snow infiltration communities can grow at ...