Now showing items 1-20 of 521

    • 20th century Betula pubescens subsp. czerepanovii tree- and forest lines in Norway 

      Bryn, Anders; Potthoff, Kerstin (Journal article; Peer reviewed, 2017-11-23)
      The purpose of making re-mapped and georeferenced data of TFLs available was to enable the data's potential for spatiotemporal analyses of TFL dynamics. Specifically the goals were to identify the localities, georeference ...
    • A bi-band binary mask based land-use change detection using landsat 8 OLI imagery 

      Li, Xian; Zhao, Shuhe; Yang, Hong; Cong, Dianmin; Zhang, Zhaohua (Journal article; Peer reviewed, 2017-03-22)
      Land use and cover change (LUCC) is important for the global biogeochemical cycle and ecosystem. This paper introduced a change detection method based on a bi-band binary mask and an improved fuzzy c-means algorithm to ...
    • A carbon balance of Norway: terrestrial and aquatic carbon fluxes 

      de Wit, Heleen; Austnes, Kari; Hylen, Gro; Dalsgaard, Lise (Journal article; Peer reviewed, 2015-02-07)
      Northernlandscapes accumulate carbon in vegetation and soils while rivers transport significant amounts of land-derived carbon to coastal areas. Here, we quantify carbon sources and sinks in main ecosystems (forests, ...
    • A comparative study of clinical manifestations, haematological and serological responses after experimental infection with Anaplasma phagocytophilum in two Norwegian sheep breeds 

      Stuen, Snorre; Grøva, Lise; Granquist, Erik Georg; Sandstedt, Karin; Olesen, Ingrid; Steinshamn, Håvard (Journal article; Peer reviewed, 2011-02-11)
      Background It has been questioned if the old native Norwegian sheep breed, Old Norse Sheep (also called Norwegian Feral Sheep), normally distributed on coastal areas where ticks are abundant, is more protected against ...
    • A comparative study of food values between the United States and Norway 

      Bazzani, Claudia; Gustavsen, Geir Wæhler; Nayga, Rodolfo M. Jr.; Rickertsen, Kyrre (Journal article; Peer reviewed, 2018-01-22)
      We compare the food values in the USA and Norway using the best–worst scaling approach. The food values examined are aimed at capturing the main issues related to food consumption such as naturalness, taste, price, safety, ...
    • A comparison of nonlinear mixed models and response to selection of tick-infestation on lambs 

      Sae-Lim, Panya; Grøva, Lise; Olesen, Ingrid; Varona, Luis (Journal article; Peer reviewed, 2017)
      Tick-borne fever (TBF) is stated as one of the main disease challenges in Norwegian sheep farming during the grazing season. TBF is caused by the bacterium Anaplasma phagocytophilum that is transmitted by the tick Ixodes ...
    • A comparison of two methods of data collection for modelling productivity of harvesters: manual time study and follow-up study using on-board-computer stem records 

      Brewer, Julia; Talbot, Bruce; Belbo, Helmer; Ackerman, Pierre; Ackerman, Simon (Journal article; Peer reviewed, 2018-04-13)
      Productivity of a mechanized P. patula cut-to-length harvesting operation was estimated and modelled using two methods of data collection: manual time study and follow-up study using StanForD stem files. The objective of ...
    • A comprehensive phylogeographic study of Arion vulgaris Moquin-Tandon, 1855 (Gastropoda: Pulmonata: Arionidae) in Europe 

      Zając, Kamila S.; Hatteland, Bjørn Arild; Feldmeyer, Barbara; Pfenninger, Markus; Filipiak, Anna; Noble, Leslie Robert; Lachowska-Cierlik, Dorota (Journal article; Peer reviewed, 2019-12-17)
      Arion vulgaris Moquin-Tandon, 1855 is regarded as one of the 100 most invasive species in Europe. The native distribution range of this species is uncertain, but for many years, the Iberian Peninsula has been considered ...
    • A ddRAD based linkage map of the cultivated Strawberry, Fragaria xananassa 

      Davik, Jahn; Sargent, Daniel J.; Brurberg, May Bente; Lien, Sigbjørn; Kent, Matthew Peter; Alsheikh, Muath K (Journal article; Peer reviewed, 2015)
      The cultivated strawberry (Fragaria ×ananassa Duch.) is an allo-octoploid considered difficult to disentangle genetically due to its four relatively similar sub-genomic chromosome sets. This has been alleviated by the ...
    • A Dual-Permeability Approach for Modeling Soil Water Flow and Heat Transport during Freezing and Thawing 

      Larsbo, Mats; Holten, Roger; Stenrød, Marianne; Eklo, Ole Martin; Jarvis, Nicholas (Journal article; Peer reviewed, 2019-08-22)
      Preferential flow may become significant in partially frozen soils because infiltration can occur through large, initially air-filled pores surrounded by a soil matrix with limited infiltration capacity. The objectives of ...
    • A metagenomic study of the microbial communities in four parallel biogas reactors 

      Solli, Linn; Håvelsrud, Othilde Else; Horn, Svein Jarle; Rike, Anne Gunn Larsen (Journal article; Peer reviewed, 2014)
      This study showed that four parallel reactors co-digesting manure and fish waste silage operated stably during a startup phase. Several important Archaea and Bacteria degrading the protein-rich substrate were identified. ...
    • A Mixed Methods Approach Towards Mapping and Economic Valuation of the Divici-Pojejena Wetland Ecosystem Services in Romania 

      Lamprinakis, Lampros; Rodriguez, Divina Gracia; Prestvik, Anne; Veidal, Asbjørn; Klimek, Björn (Conference object; Peer reviewed, 2017)
      Mapping and valuating ecosystem services has gained increasing attention over the last years and remains high in the research agenda. In this paper, a mixed methods approach is used to valuate ecosystem services provided ...
    • A multi-regional soil phosphorus balance for exploring secondary fertilizer potential: the case of Norway 

      Hanserud, Ola Stedje; Brod, Eva; Øgaard, Anne K. Falk; Müller, Daniel Beat; Brattebø, Helge (Journal article; Peer reviewed, 2015-08-30)
    • A new valuation school: Integrating diverse values of nature in resource and land use decisions 

      Jacobs, Sander; Dendoncker, Nicolas; Martín-López, Berta; Barton, David Nicholas; Gomez-Baggethun, Erik; Boeraeve, Fanny; McGrath, Francesca L.; Vierikko, Kati; Geneletti, Davide; Sevecke, Katharina J.; Pipart, Nathalie; Primmer, Eeva; Mederly, Peter; Schmidt, Stefan; Aragão, Alexandra; Baral, Himlal; Bark, Rosalind H.; Briceno, Tania; Brogna, Delphine; Cabral, Pedro; Vreese, Rik De; Liquete, Camino; Mueller, Hannah; Peh, Kelvin S.-H.; Phelan, Anna; Rincón, Alexander R.; Rogers, Shannon H.; Turkelboom, Francis; Reeth, Wouter Van; Zanten, Boris T. van; Wam, Hilde Karine; Washbourn, Carla-Leanne (Journal article; Peer reviewed, 2016)
      We are increasingly confronted with severe social and economic impacts of environmental degradation all over the world. From a valuation perspective, environmental problems and conflicts originate from trade-offs between ...
    • A Novel Recombined Potato virus Y Isolate in China 

      Han, Shuxin; Gao, Yanling; Fan, Guoquan; Zhang, Wei; Qiu, Cailing; Zhang, Shu; Bai, Yanju; Zhang, Junhua; Spetz, Carl (Journal article; Peer reviewed, 2017)
      This study reports the findings of a distinct Potato virus Y (PVY) isolate found in Northeast China. One hundred and ten samples (leaves and tubers) were collected from potato plants showing mosaic symptoms around the city ...
    • A protocol to develop Shared Socio-economic Pathways for European agriculture 

      Mitter, Hermine; Techen, Anja-K.; Sinabell, Franz; Helming, Katharina; Kok, Kasper; Priess, Jörg A.; Schmid, Erwin; Bodirsky, Benjamin L.; Holman, Ian; Lehtonen, Heikki; Leip, Adrian; Le Mouel, Chantal; Mathijs, Erik; Mehdi, Bano; Michetti, Melania; Mittenzwei, Klaus; Mora, Olivier; Øygarden, Lillian; Reidsma, Pytrik; Schaldach, Rudiger; Schönhart, Martin (Journal article; Peer reviewed, 2019-10-16)
      Moving towards a more sustainable future requires concerted actions, particularly in the context of global climate change. Integrated assessments of agricultural systems (IAAS) are considered valuable tools to provide sound ...
    • A regional approach to Nordic crop wild relative in situ conservation planning 

      Fitzgerald, Heli; Palmé, Anna; Asdal, Åsmund; Endresen, Dag Terje Filip; Kiviharju, Elina; Lund, Birgitte; Rasmussen, Morten; Thorbjörnsson, Hjörtur; Weibull, Jens (Journal article; Peer reviewed, 2019-02-06)
      Crop wild relatives (CWR) can provide one solution to future challenges on food security, sustainable agriculture and adaptation to climate change. Diversity found in CWR can be essential for adapting crops to these new ...
    • A sensible climate solution for the boreal forest 

      Astrup, Rasmus Andreas; Bernier, Pierre Y.; Genet, Helene; Lutz, David A.; Bright, Ryan M. (Journal article; Peer reviewed, 2018-01-02)
      Climate change could increase fire risk across most of the managed boreal forest. Decreasing this risk by increasing the proportion of broad-leaved tree species is an overlooked mitigation–adaption strategy with multiple benefits.
    • A study of variance estimation methods for systematic spatial sampling 

      Strand, Geir-Harald (Journal article; Peer reviewed, 2017)
      An undesirable property of systematic spatial sampling is that there is no known method allowing unbiased estimation of the uncertainty of statistical estimates from these surveys. A number of alternative variance estimation ...
    • A synthesis of the arctic terrestrial and marine carbon cycles under pressure from a dwindling cryosphere 

      Parmentier, Frans-Jan; Christensen, Torben R.; Rysgaard, Søren; Bendtsen, Jørgen; Glud, Ronnie N; Brent, Else; van Huissteden, Jacobus; Sachs, Torsten; Vonk, Jorien E.; Sejr, Mikael K (Journal article; Peer reviewed, 2017)
      Abstract The current downturn of the arctic cryosphere, such as the strong loss of sea ice, melting of ice sheets and glaciers, and permafrost thaw, affects the marine and terrestrial carbon cycles in numerous interconnected ...