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    • Mapping species distributions: a comparison of skilled naturalist and lay citizen science recording 

      van der Wal, René; Anderson, Helen; Robinson, Annie; Sharma, Nirwan; Mellish, Chris; Roberts, Stuart; Darvill, Ben; Siddharthan, Advaith (Journal article; Tidsskriftartikkel; Peer reviewed, 2015-10-27)
      To assess the ability of traditional biological recording schemes and lay citizen science approaches to gather data on species distributions and changes therein, we examined bumblebee records from the UK’s national repository (National Biodiversity Network) and from BeeWatch. The two recording approaches revealed similar relative abundances of bumblebee species but different geographical distributions. ...
    • Anthocyanin Profile in Berries of Wild and Cultivated Vaccinium spp. along Altitudinal Gradients in the Alps 

      Zoratti, Laura; Jaakola, Laura; Häggman, Hely; Giongo, Lara (Journal article; Tidsskriftartikkel; Peer reviewed, 2015-09-16)
      Vaccinium spp. berries provide some of the best natural sources of anthocyanins. In the wild bilberry (Vaccinium myrtillus L.), a clear increasing trend in anthocyanin biosynthesis has been reported toward northern latitudes of Europe, but studies related to altitude have given contradictory results. The present study focused on the anthocyanin composition in wild bilberries and highbush blueberry ...
    • 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. ...
    • Genetic diversity and population structure of an important wild berry crop 

      Zoratti, Laura; Palmieri, Luisa; Jaakola, Laura; Häggman, Hely (Journal article; Tidsskriftartikkel; Peer reviewed, 2015)
      The success of plant breeding in the coming years will be associated with access to new sources of variation, which will include landraces and wild relatives of crop species. In order to access the reservoir of favourable alleles within wild germplasm, knowledge about the genetic diversity and the population structure of wild species is needed. Bilberry (Vaccinium myrtillus) is one of the most ...
    • Light and temperature effects on bioactivity in diatoms 

      Ingebrigtsen, Richard Andre; Hansen, Espen; Andersen, Jeanette hammer; Eilertsen, Hans Christian (Journal article; Tidsskriftartikkel; Peer reviewed, 2015-06-05)
      Isolates of five pelagic North Atlantic marine diatoms (Bacillariophyceae): Attheya longicornis, Chaetoceros socialis, Chaetoceros furcellatus, Skeletonema marinoi and Porosira glacialis were cultivated in large photobioreactors at two light and two temperature regimes to test if this affected bioactivity. We screened for bioactivity in assays representing five different therapeutic areas: ...
    • Superb Winter fur insulation in small Siberian musk deer (Moschus moschiferus) 

      Blix, Arnoldus S; Kvadsheim, Petter Helgevold; Kholodova, Marina V.; Sokolov, Vladimir E.; Messelt, Edward B.; Tyler, N. J. C. (Journal article; Tidsskriftartikkel, 2015)
    • Muscle growth of triploid Atlantic cod juveniles (Gadus morhua) 

      Vargas, Cecilia Campos; Peruzzi, Stefano; Palihawadana, Anjana; Ottesen, Oddvar; Hagen, Ørjan (Journal article; Tidsskriftartikkel; Peer reviewed, 2015)
      This study has investigated the muscle growth of diploid and triploid Atlantic cod (Gadus morhua) juveniles raised in replicate tanks over a period of 29 weeks and analysed at three sampling points (February, June and September). Data for weight, length, condition factor (K), muscle fibre growth and myogenic progenitor cells (MPCs) number were collected and results were analysed in relation ...
    • Marine diatoms are a rich source of bioactivity 

      Ingebrigtsen, Richard Andre (Conference object; Konferansebidrag, 2014-11-03)
      As part of the MabCent-SFI drug-discovery initiative organized by the University of Tromsø, the coastal areas of northern Norway and the Barents Sea have been investigated (2006-2014). We saw that bioac- tive compounds from diatoms are very rarely reported (1-4). There- fore we desided that during the initial MabCent research cruises, di- atom strains should be isolated and kept in a culture collection ...
    • Area use and movement patterns of wild and escaped farmed Atlantic salmon before and during spawning in a large Norwegian river 

      Moe, Karina; Næsje, Tor; Haugen, Thrond Oddvar; Ulvan, Eva Marita; Aronsen, Tonje; Sandnes, Tomas; Thorstad, Eva Bonsak (Journal article; Tidsskriftartikkel; Peer reviewed, 2016-02-02)
      We compared the within-river movements and distribution of wild and escaped farmed Atlantic salmon Salmo salar before and during spawning in the Namsen river system of Central Norway. A total of 74 wild and 43 escaped farmed salmon were captured at sea, tagged with radio transmitters and released. Based on our examinations, most, if not all salmon (farmed and wild) entering the River Namsen were ...
    • Deepened winter snow increases stem growth and alters stem δ13C and δ15N in evergreen dwarf shrub Cassiope tetragona in high-arctic Svalbard tundra 

      Blok, Daan; Weijers, Stef; Welker, Jeffrey M.; Cooper, Elisabeth J.; Michelsen, Anders; Löffler, Jörg; Elberling, Bo (Journal article; Tidsskriftartikkel; Peer reviewed, 2015-04-14)
      Abstract Deeper winter snow is hypothesized to favor shrub growth and may partly explain the shrub expansion observed in many parts of the arctic during the last decades, potentially triggering biophysical feedbacks including regional warming and permafrost thawing.Weexperimentally tested the effects of winter snow depth on shrub growth and ecophysiology by measuring stem length and stem hydrogen ...
    • What are the impacts of reindeer/caribou (Rangifer tarandus L.) on arctic and alpine vegetation? A systematic review 

      Bernes, Claes; Bråthen, Kari Anne; Forbes, Bruce C.; Speed, James David Mervyn; Moen, Jon (Journal article; Tidsskriftartikkel; Peer reviewed, 2015-02-23)
      Background: The reindeer (or caribou, Rangifer tarandus L.) has a natural range extending over much of Eurasia’s and North America’s arctic, alpine and boreal zones, yet its impact on vegetation is still unclear. This lack of a common understanding hampers both the management of wild and semi-domesticated reindeer populations and the preservation of biodiversity. To achieve a common platform, we ...
    • Deeper snow alters soil nutrient availability and leaf nutrient status in high Arctic tundra 

      Semenchuk, Philipp; Elberling, Bo; Amtorp, Cecilie; Winkler, Judith; Rumpf, Sabine Bettina; Michelsen, Anders; Cooper, Elisabeth J. (Journal article; Tidsskriftartikkel; Peer reviewed, 2015-02-24)
      Nitrogen (N) mineralization, nutrient availability, and plant growth in the Arctic are often restricted by low temperatures. Predicted increases of cold-season temperatures may be important for plant nutrient availability and growth, given that N mineralization is also taking place during the cold season. Changing nutrient availability may be reflected in plant N and chlorophyll content and lead to ...
    • Future changes in the supply of goods and services from natural ecosystems: prospects for the European north 

      Jansson, Roland; Nilsson, Christer; Keskitalo, E. Carina H.; Viasova, Tatiana; Sutinen, Marja-Liisa; Moen, Jon; Chapin, Stuart; Bråthen, Kari Anne; Cabeza, Mar; Callaghan, Terry V.; van Oort, Bob; Dannevig, Halvor; Bay-Larsen, Ingrid Agathe; Ims, Rolf Anker; Aspholm, Paul Eric (Journal article; Tidsskriftartikkel; Peer reviewed, 2015-09)
      Humans depend on services provided by ecosystems, and how services are affected by climate change is increasingly studied. Few studies, however, address changes likely to affect services from seminatural ecosystems. We analyzed ecosystem goods and services in natural and seminatural systems, specifically how they are expected to change as a result of projected climate change during the 21st ...
    • Comparative absorption and tissue distribution of 14C-benzo(a)pyrene and 14C-phenanthrene in the polar cod (Boreogadus saida) following oral administration 

      Bakke, Marit Jørgensen; Nahrgang, Jasmine; Ingebrigtsen, Kristian (Journal article; Tidsskriftartikkel; Peer reviewed, 2015-10-29)
      The Arctic is an important sink for organic pollutants such as polycyclic aromatic hydrocarbons (PAHs) long-range transported from industrial regions. With the retreat of sea ice and increasing anthropogenic activities such as the oil and gas industries, local sources of PAHs are expected to increase both through operational and accidental discharges. There is a need to increase our knowledge ...
    • Cross-cultural values and management preferences in protected areas of Norway and Poland 

      Brown, Greg; Hausner, Vera Helene; Grodzińska-Jurczak, Malgorzata; Pietrzyk-Kaszyńska, Agata; Olszańska, Agnieszka; Peek, Barbara; Rechciński, Marcin; Lægreid, Eiliv Jenssen (Journal article; Tidsskriftartikkel; Peer reviewed, 2015-09-25)
      Protected areas provide important ecosystem services globally but few studies have examined how cultural differences influence the distribution of cultural ecosystem values and management preferences. We used internet-based public participation GIS (PPGIS) in the countries of Norway and Poland to identify ecosystem values and management preferences in protected areas held by regional residents and ...
    • Effects of land tenure and protected areas on ecosystem services and land use preferences in Norway 

      Hausner, Vera Helene; Brown, Greg; Lægreid, Eiliv Jenssen (Journal article; Tidsskriftartikkel; Peer reviewed, 2015-08)
      Prior research has examined the relationship between physical landscapes and ecosystem services, but the distribution of ecosystem services by land tenure and protected areas is less developed. We analyze the spatial distribution of participatory mapped ecosystem values, as indicators of ecosystem services, to determine their relationship with land tenure in southern Norway, a region characterized ...
    • Physical landscape associations with mapped ecosystem values with implications for spatial value transfer: An empirical study from Norway 

      Brown, Greg; Hausner, Vera Helene; Lægreid, Eiliv Jenssen (Journal article; Tidsskriftartikkel; Peer reviewed, 2015-07-31)
      The identification of spatial associations between perceived ecosystem values and physical landscapes is confronted by a diversity of mapping methods, heterogeneous human populations, and variability in physical landscape classification systems. This study reviews previous research on spatial associations and reports new empirical findings from Norway to describe the potential for spatial “value ...
    • Aspects of reproductive biology of wild-caught polar cod (Boreogadus saida) from Svalbard waters 

      Nahrgang, Jasmine; Storhaug, Ekaterina; Murzina, Svetlana; Delmas, Olympe; Nemova, Nina N.; Berge, Jørgen (Journal article; Tidsskriftartikkel; Peer reviewed, 2015-11-27)
      Polar cod (Boreogadus saida) is considered a key species in the Arctic marine ecosystems. Yet detailed or even basic knowledge regarding its biology and adaptations, especially during the polar night, is in many cases poor. Data are presently unavailable in Western literature on the gonad development of polar cod and its reproductive biology in wild specimens. Accordingly, gonad development of ...
    • Mixed exposure to bacterial lipopolysaccharide and seafood proteases augments inflammatory signalling in an airway epithelial cell model (A549) 

      Bhagwat, Sampada Satchidanand; Larsen, Anett Kristin; Seternes, Ole Morten; Bang, Berit (Journal article; Tidsskriftartikkel; Peer reviewed, 2015-07-06)
      Seafood industry workers exhibit increased prevalence of respiratory symptoms due to exposure to bioaerosols containing a mixture of bioactive agents. In this study, a human pulmonary epithelial cell model (A549) was exposed to mixtures of bacterial lipopolysaccharide (LPS) and protease-activated receptor-2 (PAR-2) agonists H-Ser-Leu-Ile-Gly-Lys-Val-NH2 (SLIGKV-NH2), purified salmon (Salmo salar) ...
    • First records of Atlantic mackerel (Scomber scombrus) from the Svalbard archipelago, Norway, with possible explanations for the extension of its distribution 

      Berge, Jørgen; Heggland, Kristin N.; Lønne, Ole Jørgen; Cottier, Finlo R.; Hop, Haakon; Gabrielsen, Geir W.; Nøttestad, Leif; Misund, Ole Arve (Journal article; Tidsskriftartikkel; Peer reviewed, 2015-03)
      Atlantic mackerel (Scomber scombrus) were recorded in Isfjorden, Svalbard (78˚15ʹ N, 15˚11ʹ E) in late September 2013. This record is the northernmost known occurrence of mackerel in the Arctic and represents a possible northward expansion (of ca. 5˚ latitude) of its distributional range. The examined specimens of mackerel were between 7 and 11 years old, with a mean size of 39 cm and a mean ...