Browsing NIBIO Brage by Title

Now showing items 5265-5284 of 9927

    • Model-based ordination for species with unequal niche widths 

      van der Veen, Bert; Hui, Francis K. C.; Hovstad, Knut Anders; Solbu, Erik Blystad; OHara, Robert Brian (Peer reviewed; Journal article, 2021-03-25)
      1. It is common practice for ecologists to examine species niches in the study of community composition. The response curve of a species in the fundamental niche is usually assumed to be quadratic. The centre of a quadratic ...

    • Modeling the influence of eutrophication and redox conditions on mercury cycling at the sediment-water interface in the Berre Lagoon 

      Pakhomova, Svetlana; Yakushev, Evgeny; Protsenko, Elizaveta; Rigaud, Sylvain; Cossa, Daniel; Knoery, Joel; Couture, Raoul-Marie; Radakovitch, Olivier; Yakubov, Shamil; Krzeminska, Dominika; Newton, Alice (Journal article; Peer reviewed, 2018-08-21)
      This study presents a specifically designed Mercury module in a coupled benthic-pelagic reactive-transport model - Bottom RedOx Model (BROM) that allows to study mercury (Hg) biogeochemistry under different conditions. ...

    • Modeling the spatiotemporal dynamics of gross domestic product in China using extended temporal coverage nighttime light data 

      Zhu, Xiaobo; Ma, Mingguo; Yang, Hong; Ge, Wei (Journal article; Peer reviewed, 2017-06-18)
      Nighttime light data derived from the Defense Meteorological Satellite Program’s Operational Linescan System (DMSP-OLS) in conjunction with the Soumi National Polar-Orbiting Partnership Visible Infrared Imaging Radiometer ...

    • Modellbasert analyse av en forenkling av virkemiddelsystemet for norsk jordbruk 

      Mittenzwei, Klaus (NIBIO RAPPORT;1(34) 2015, Research report, 2015)
      I denne studien analyseres effekten av en forenkling av de økonomiske virkemidlene i jordbrukspolitikken slik det er skissert av det såkalte «Forenklingsutvalget». Utredningens hovedvekt ligger på en potensiell omfordelingseffekt ...

    • Modellering av næringsstofftilførsler i et vassdragsavsnitt på Hadeland 

      Borch, Håkon; Turtumøygard, Stein; Eggestad, Hans (Bioforsk rapport;6(132) 2011, Research report, 2012-02-01)
      Rapporten omhandler vannområdet øst for Randsfjorden fra utløpet av Vigga og sørover til Jevnaker. Innsjøens nedbørfelt er på 354 km2. Arealet er dekket av skog (≈70%) og jordbruk (28%). Husdyrtettheten er ikke høy og ...

    • Modellering av skogproduksjon for økologisk og økonomisk forvaltning 

      Øyen, Bernt-Håvard (Aktuelt fra Skogforskningen; 3/01, Research report, 2001)
      Modellering av skogproduksjon for økologisk og økonomisk forvaltning. Foreløpige resultater. Aktuelt fra skogforskningen. 3/0 I: 1-30. For på et vitenskapelig grunnlag å kunne fremlegge gode prognoser på hvordan skog og ...

    • Modellering av temperaturutvikling i store kompostranker før og etter vending hos Maarud 2022 – Delrapport 2 

      Bergersen, Ove; Ødegaard, Elling (NIBIO-rapport;8(69) 2022, Research report, 2022-05)
      Det ble lagt opp en testranke med 22 temperatursensorer for å måle og modellere temperaturutviklingen i kompostrankene hos Maarud. Hygieniserings tiden som krever temperaturer over 55°C i ranken er forventet å være 45-50 ...

    • Modellering av utbredelse og gjengroing av kystlynghei i Norge 

      Solbu, Erik Blystad; Albertsen, Elena; Johansen, Line (NIBIO-rapport;6(168) 2020, Research report, 2020-12)
      Kystlynghei er en truet naturtype men det finnes ingen presise arealtall for verken utbredelse eller gjengroing av kystlynghei som fremdeles finnes. I dette prosjektet har vi derfor modellert utbredelse og gjengroing av ...

    • Modelling above ground biomass in Tanzanian miombo woodlands using TanDEM-X WorldDEM and field data 

      Puliti, Stefano; Solberg, Svein; Næsset, Erik; Gobakken, Terje; Zahabu, Eliakimu; Mauya, Ernest William; Malimbwi, Rogers Ernest (Journal article; Peer reviewed, 2017-09-22)
      The use of Interferometric Synthetic Aperture Radar (InSAR) data has great potential for monitoring large scale forest above ground biomass (AGB) in the tropics due to the increased ability to retrieve 3D information even ...

    • Modelling above-ground biomass stock over Norway using national forest inventory data with ArcticDEM and Sentinel-2 data 

      Puliti, Stefano; Hauglin, Marius; Breidenbach, Johannes; Montesano, P.; Neigh, C.S.R.; Rahlf, Johannes; Solberg, Svein; Klingenberg, T. F.; Astrup, Rasmus Andreas (Peer reviewed; Journal article, 2019-11-07)
      Boreal forests constitute a large portion of the global forest area, yet they are undersampled through field surveys, and only a few remotely sensed data sources provide structural information wall-to-wall throughout the ...

    • Modelling CO2 and CH4 emissions from drained peatlands with grass cultivation by the BASGRA-BGC model 

      Huang, Xiao; Silvennoinen, Hanna Marika; Kløve, Bjørn; Regina, Kristiina; Kandel, Tanka P.; Piayda, Arndt; Karki, Sandhya; Lærke, Poul Erik; Höglind, Mats (Peer reviewed; Journal article, 2021-04-15)
      Cultivated peatlands under drainage practices contribute significant carbon losses from agricultural sector in the Nordic countries. In this research, we developed the BASGRA-BGC model coupled with hydrological, soil carbon ...

    • Modelling nutrient load changes from fertilizer application scenarios in six catchments around the Baltic sea 

      Thodsen, Hans; Farkas, Csilla; Chormanski, Jaroslaw; Trolle, Dennis; Blicher-Mathiesen, Gitte; Grant, Ruth; Engebretsen, Alexander Melvold; Kardel, Ignacy; Andersen, Hans Estrup (Journal article; Peer reviewed, 2017-05-03)
      The main environmental stressor of the Baltic Sea is elevated riverine nutrient loads, mainly originating from diffuse agricultural sources. Agricultural practices, intensities, and nutrient losses vary across the Baltic ...

    • Modelling of biomass utilisation for energy purpose 

      Grzybek, Anna (Bioforsk FOKUS;5(6) 2010, Research report, 2010)
      The EEA- and the Norwegian Financial Mechanism are important instruments in strengthening the scientific relations between Poland and Norway. Developing new understanding and new concepts through collaboration, knowledge ...

    • Modelling Plume Development with Annual Pulses of Contaminants Released from an Airport Runway to a Layered Aquifer, Evaluation of an In Situ Monitoring System 

      French, Helen Kristine; Hansen, Mona Cecilie; Moe, Kamilla G.; Stene, Julie (Peer reviewed; Journal article, 2023-03-04)
      In cold climates, the use of de-icing chemicals in the winter can lead to groundwater contamination, especially when used in large quantities, such as at airports. Oslo Airport, Gardermoen, is situated on Norway’s largest ...

    • Modelling temperature-driven changes in species associations across freshwater communities 

      Perrin, Sam; van der Veen, Bert; Golding, Nick; Finstad, Anders Gravbrøt (Peer reviewed; Journal article, 2021-10-20)
      Due to global climate change–induced shifts in species distributions, estimating changes in community composition through the use of Species Distribution Models has become a key management tool. Being able to determine how ...

    • Modelling the Material Resistance of Wood—Part 1: Utilizing Durability Test Data Based on Different Reference Wood Species 

      Alfredsen, Gry; Brischke, Christian; Marais, Brendan; Stein, Robert F.A.; Zimmer, Katrin; Humar, Miha (Peer reviewed; Journal article, 2021-04-29)
      To evaluate the performance of new wood-based products, reference wood species with known performances are included in laboratory and field trials. However, different wood species vary in their durability performance, and ...

    • Modelling the Material Resistance of Wood—Part 2: Validation and Optimization of the Meyer-Veltrup Model 

      Brischke, Christian; Alfredsen, Gry; Humar, Miha; Conti, Elena; Cookson, Laurie; Emmerich, Lukas; Flæte, Per-Otto; Fortino, Stefania; Francis, Lesley; Hundhausen, Ulrich; Irbe, Ilze; Jacobs, Kordula; Klamer, Morten; Krzisnik, Davor; Lesar, Bostjan; Melcher, Eckhard; Meyer-Veltrup, Linda; Morell, Jeffrey; Norton, Jack; Palanti, Sabrina; Presley, Gerald; Reinprecht, Ladislav; Singh, Tripti; Stirling, Rod; Venalainen, Martti; Westin, Mats; Wong, Andrew; Suttie, Ed (Peer reviewed; Journal article, 2021-05-06)
      Service life planning with timber requires reliable models for quantifying the effects of exposure-related parameters and the material-inherent resistance of wood against biotic agents. The Meyer-Veltrup model was the first ...

    • Modelling the Material Resistance of Wood—Part 3: Relative Resistance in above- and in-Ground Situations—Results of a Global Survey 

      Brischke, Christian; Alfredsen, Gry; Humar, Miha; Conti, Elena; Cookson, Laurie; Emmerich, Lukas; Flæte, Per-Otto; Fortino, Stefania; Francis, Lesley; Hundhausen, Ulrich; Irbe, Ilze; Jacobs, Kordula; Klamer, Morten; Krzisnik, Davor; Lesar, Bostjan; Melcher, Eckhard; Meyer-Veltrup, Linda; Morrell, Jeffrey; Norton, Jack; Palanti, Sabrina; Presley, Gerald; Reinprecht, Ladislav; Singh, Tripti; Stirling, Rod; Venalainen, Martti; Westin, Mats; Wong, Andrew; Suttie, Ed (Peer reviewed; Journal article, 2021-05-08)
      Durability-based designs with timber require reliable information about the wood properties and how they affect its performance under variable exposure conditions. This study aimed at utilizing a material resistance model ...

    • Modellverktøy for beregning av fosfortap fra jordbruksdominerte områder. Dokumentasjon av modellen Agricat 2 

      Kværnø, Sigrun; Turtumøygard, Stein; Grønsten, Heidi Anette; Bechmann, Marianne (Bioforsk rapport;9(108) 2014, Research report, 2014-10-13)
      Denne rapporten dokumenterer beregningsmetodikken i den empiriske jord- og fosfortapsmodellen Agricat 2, slik den forelå og ble brukt i 2014. Modellen er GIS-basert. Inndata til modellen er i utgangspunktet lett tilgjengelige, ...

    • Models for integrating and identifying the effect of senescence on individual tree survival probability for norway spruce 

      Siipilehto, Jouni; Mäkinen, Harri; Andreassen, Kjell; Peltoniemi, Mikko (Peer reviewed; Journal article, 2021-04-12)
      Ageing and competition reduce trees’ ability to capture resources, which predisposes them to death. In this study, the effect of senescence on the survival probability of Norway spruce (Picea abies (L.) Karst.) was analysed ...