Forskningsinteresser

Arktis, Svalbard, fjellvegetasjon, planteøkologi, vegetasjonslære, plantesosiologi, Geografiske informasjonssystem, naturgeografi, satellittbasert miljøinformasjon og overvåkning, kart og kartlegging.

Undervisning

Ansvarlig for gjennomføring av kurset BIO-3111 Geografiske informasjonssystem og jordobservasjon. Deltar også på undervisning i BIO-100? Økologi I.

Arbeider i CRIStin


  • Joly, Daniel; Nilsen, Lennart; Brossard, Thierry; Elvebakk, Arve. Plants as bioindicator for temperature interpolation purposes: Analyzing spatial correlation between botany based index of thermophily and integrated temperature characteristics. Ecological Indicators 2010; Volum 10 (5). ISSN 1470-160X.s 990 - 998.s doi: 10.1016/j.ecolind.2010.02.007.
  • Nilsen, Lennart; Overrein, Øystein. Svalbards planteliv. (fulltekst) 2010 ISBN 978-82-7666-275-7.s 21 - 25.
  • Raynolds, Martha K.; Walker, Donald A.; Balser, Andrew; Bay, Christian; Campbell, Mitch; Cherosov, Mikhail M.; Daniëls, Fred J.A.; Eidesen, Pernille Bronken; Ermokhina, Ksenia A.; Frost, Gerald V.; Jedrzejek, Birgit; Jorgenson, M. Torre; Kennedy, Blair E.; Kholod, Sergei S.; Lavrinenko, Igor A.; Lavrinenko, Olga V.; Magnússon, Borgþór; Matveyeva, Nadezhda V.; Metúsalemsson, Sigmar; Nilsen, Lennart; Olthof, Ian; Pospelov, Igor N.; Pospelova, Elena B.; Pouliot, Darren; Razzhivin, Vladimir; Schaepman-Strub, Gabriela; Šibík, Jozef; Telyatnikov, Mikhail Yu.; Troeva, Elena. A raster version of the Circumpolar Arctic Vegetation Map (CAVM). Remote Sensing of Environment 2019; Volum 232. ISSN 0034-4257.s doi: 10.1016/j.rse.2019.111297.

  • Engen, Sigrid; Runge, Claire Alice; Brown, Greg; Fauchald, Per; Nilsen, Lennart; Hausner, Vera Helene. Assessing local acceptance of protected area management using public participation GIS (PPGIS). Journal for Nature Conservation 2018; Volum 43. ISSN 1617-1381.s 27 - 34.s doi: 10.1016/j.jnc.2017.12.002.

  • Elvebakk, Arve; Bjerke, Jarle W.; Nilsen, Lennart. The lichen Allocetraria madreporiformis in high-arctic steppes on Svalbard: a result of out-of-Tibet migration?. Graphis Scripta 2018; Volum 30 (1). ISSN 0901-7593.s 1 - 11.

  • Walker, Donald A.; Daniëls, Fred J. A.; Matveyeva, Nadezhda V.; Šibík, Jozef; Walker, Marilyn D.; Breen, Amy L.; Druckenmiller, Lisa A.; Raynolds, Martha K.; Bültmann, Helga; Hennekens, Stephan M.; Buchhorn, Marcel; Epstein, Howard E.; Ermokhina, Ksenia; Fosaa, Anna M.; Hei∂marsson, Starri; Heim, Birgit; Jonsdottir, Ingibjørg; Koroleva, Natalia E.; Lévesque, Esther; MacKenzie, William H.; Henry, Greg H. R.; Nilsen, Lennart; Peet, Robert K.; Razzhivin, Volodya; Talbot, Stephan S.; Telyatnikov, Mikhail; Thannheiser, Dietbert; Wirth, Lisa M.; Webber, Patrick J.. Circumpolar Arctic Vegetation Classification. Phytocoenologia 2018; Volum 48 (2). ISSN 0340-269X.s 181 - 201.s doi: 10.1127/phyto/2017/0192.

  • Rijal, Dilli Prasad; Alm, Torbjørn; Nilsen, Lennart; Alsos, Inger Greve. Giant invasive Heracleum persicum: Friend or foe of plant diversity?. Ecology and Evolution 2017; Volum 7 (13). ISSN 2045-7758.s 4936 - 4950.s doi: 10.1002/ece3.3055.

  • Anderson, Helen; Nilsen, Lennart; Tømmervik, Hans; Karlsen, Stein Rune; Nagai, Shin; Cooper, Elisabeth J.. Correction: Anderson, H.B. et al. Using Ordinary Digital Cameras in Place of Near-Infrared Sensors to Derive Vegetation Indices for Phenology Studies of High Arctic Vegetation. Remote Sens. 2016, 8, 847. Remote Sensing 2017; Volum 9 (10). ISSN 2072-4292.s doi: 10.3390/rs9101003.

  • Joly, Daniel; Arnesen, Geir; Malnes, Eirik; Nilsen, Lennart. Building an indicator to characterize the thermal conditions for plant growth on an Arctic archipelago, Svalbard. Ecological Indicators 2016; Volum 66. ISSN 1470-160X.s 623 - 631.s doi: 10.1016/j.ecolind.2015.12.005.

  • Elvebakk, Arve; Nilsen, Lennart. Stepperøyrkvein Calamagrostis purpurascens i Wijdefjorden på Svalbard - einaste lokalitetar i Europa. Blyttia : Norsk botanisk forenings tidsskrift 2016; Volum 74 (4). ISSN 0006-5269.s 259 - 266.

  • Joly, Daniel; Arnesen, Geir; Nilsen, Lennart. Distribution de la vègètation au Svalbard / Distribution of vegetation on Svalbard. Les mémoires du laboratoire de Géomorphologie 2016; Volum 46. ISSN 0750-6066.s 93 - 102.

  • Anderson, Helen; Nilsen, Lennart; Tømmervik, Hans; Karlsen, Stein Rune; Nagai, Shin; Cooper, Elisabeth J.. Using ordinary digital cameras in place of near-infrared sensors to derive vegetation indices for phenology studies of high arctic vegetation. Remote Sensing 2016; Volum 8 (10). ISSN 2072-4292.s doi: 10.3390/rs8100847.

  • Tømmervik, Hans; Karlsen, Stein Rune; Nilsen, Lennart; Johansen, Bernt; Storvold, Rune; Zmarz, Anna; Beck, Pieter S.; Johansen, Kjell-Sture; Høgda, Kjell Arild; Goetz, Scott; Park, Taejin; Zagajewski, Bogdan; Myneni, Ranga B.; Bjerke, Jarle W.. Use of unmanned aircraft systems (UAS) in a multi-scale vegetation index study of arctic plant communities in Adventdalen on Svalbard. EARSeL eProceedings 2014; Volum 13 (S1). ISSN 1729-3782.s 47 - 52.s doi: 10.12760/02-2014-1-09.

  • Nilsen, Lennart; Elvebakk, Arve. Vegetation of exposed calcareous ridges in central Spitsbergen, Svalbard, Norway. Phytocoenologia 2014; Volum 44 (1-2). ISSN 0340-269X.s 19 - 29.s doi: 10.1127/0340-269X/2013/0043-0470.

  • Nilsen, Lennart; Joly, Daniel; Elvebakk, Arve; Brossard, Thierry. Modeling spatial covariation of summer temperatures and bio-indicators in an Arctic coastal area. Climate Research (CR) 2013; Volum 58 (1). ISSN 0936-577X.s 1 - 13.s doi: 10.3354/cr01173.

  • Nilsen, Lennart; Thannheiser, Dietbert. Phytosociology of the Svalbard archipelago including Bjørnøya and Jan Mayen. (fulltekst) 2013 ISBN 978-9935-431-24-0.s 81 - 87.

  • Nilsen, Lennart; Arnesen, Geir; Joly, Daniel; Malnes, Eirik. Spatial modelling of Artic plant diversity. Biodiversity 2012; Volum 13. ISSN 1488-8386.s doi: 10.1080/14888386.2012.717008.

  • Elvebakk, Arve; Nilsen, Lennart. Svalbardsaltgras Puccinellia svalbardensis - endemisk for Svalbard, men vanleg i steppeområdet ved Wijdefjorden. Blyttia : Norsk botanisk forenings tidsskrift 2011; Volum 69 (3). ISSN 0006-5269.s 173 - 183.

  • Joly, Daniel; Nilsen, Lennart; Brossard, Thierry; Elvebakk, Arve. Plants as bioindicator for temperature interpolation purposes: Analyzing spatial correlation between botany based index of thermophily and integrated temperature characteristics. Ecological Indicators 2010; Volum 10 (5). ISSN 1470-160X.s 990 - 998.s doi: 10.1016/j.ecolind.2010.02.007.

  • Joly, Daniel; Nilsen, Lennart; Brossard, Thierry; Elvebakk, Arve. Vegetation and temperature distribution in Kongsfjorden, Svalbard, 79°N: formal proposal for a spatial approach. Espace Géographique 2006; Volum 4. ISSN 0046-2497.s 255 - 270.

  • Beck, Pieter simon a; Kalmbach, Ellen; Joly, Daniel; Stien, Audun; Nilsen, Lennart. Modelling local distribution of an Arctic dwarf shrub indicates an important role for remote sensing of snow cover. Remote Sensing of Environment 2005; Volum 98. ISSN 0034-4257.s 110 - 121.

  • Bjerke, Jarle Werner; Joly, D.; Nilsen, Lennart; Brossard, T.. Spatial trends in usnic acid concentrations of the lichen Flavocetraria nivalis along local climatic gradients in the Arctic (Kongsfjorden, Svalbard). (fulltekst) Polar Biology 2004; Volum 27 (7). ISSN 0722-4060.s 409 - 417.

  • Joly, D.; Nilsen, Lennart; Fury, R.; Elvebakk, Arve; Brossard, T.. Temperature interpolation at a large scale: test on a small area on Svalbard. International Journal of Climatology 2003; Volum 23. ISSN 0899-8418.s 1637 - 1654.

  • Joly, D.; Nilsen, Lennart; Fury, R.; Elvebakk, Arve; Brossard, T.. TEMPERATURE INTERPOLATION AT A LARGE SCALE: TEST ON A SMALL AREA IN SVALBARD. (fulltekst) International Journal of Climatology 2003; Volum 23. ISSN 0899-8418.s 1637 - 1654.

  • Alm, Torbjørn; Alsos, Inger Greve; Bråthen, Kari Anne; Nilsen, Lennart; Sommersel, G. -A.. Dunhavre, Avenula pubescens, i Finnmark - utbredelse og økologi. Blyttia : Norsk botanisk forenings tidsskrift 2000; Volum 58. ISSN 0006-5269.s 166 - 173.

  • Nilsen, Lennart; Elvebakk, Arve; Brossard, Thierry; Joly, Daniel. Mapping and analysing arctic vegetation: evaluating a method coupling numerical classification of vegetation data with SPOT satellite data in a probability model. International Journal of Remote Sensing 1999; Volum 20. ISSN 0143-1161.s 2947 - 2977.

  • Parmentier, Frans-Jan W.; Nilsen, Lennart; Tømmervik, Hans; Meisel, Ove H.; Bröder, Lisa M.; Vonk, Jorien E.; Semenchuk, Philipp R.; Cooper, Elisabeth J.. Thicker Snow Cover Triggers Permafrost Carbon Loss Through Both Enhanced Warming and Surface Runoff. EGU General Assembly 2019 (fulltekst) 2019-04-07 - 2019-04-12 2019.

  • Stübner, Eike Ingrid; Høiland, Klaus; Nilsen, Lennart; Lang, Simone; Coulson, Stephen James; Eidesen, Pernille Bronken. Learning Arctic Biology. (data) 2019.

  • Engen, Sigrid; Runge, Claire Alice; Brown, Greg; Fauchald, Per; Nilsen, Lennart; Hausner, Vera Helene. Assessing local acceptance of protected area management using public participation GIS. Let the People Map 2019-06-17 - 2019-06-19 2019.

  • Parmentier, Frans-Jan W.; Nilsen, Lennart; Tømmervik, Hans; Meisel, Ove; Bröder, Lisa; Vonk, Jorien E.; Semenchuk, Philipp; Cooper, Elisabeth J.. Thicker Snow Cover Triggers Lateral Permafrost Carbon Loss Both Through Enhanced Warming and Surface Runoff. American Geophysical Union, Fall Meeting 2018 2018-12-10 - 2018-12-14 2018.

  • Tømmervik, Hans; Nilsen, Lennart; Storvold, Rune; Solbø, Stian; Parmentier, Frans-Jan; Cooper, Elisabeth J.. Monitoring interactions of snow-ice-vegetation-permafrost on Svalbard, results from a snow manipulation experiment and near ground Remote sensing observation system (rigs) and UAV. ES1309 OPTIMISE COST Action - Final Conference 2018-02-21 - 2018-02-23 2018.

  • Parmentier, Frans-Jan W.; Nilsen, Lennart; Tømmervik, Hans; Cooper, Elisabeth J.. A low-cost camera setup to monitor vegetation-snow interactions in a high-arctic valley on the Svalbard archipelago. Latice Annual Meeting 2017 2017-03-15 - 2017-03-16 2017.

  • Parmentier, Frans-Jan W.; Nilsen, Lennart; Mörsdorf, Martin Alfons; Tømmervik, Hans; Karlsen, Stein-Rune; Cooper, Elisabeth J.. Snow-vegetation-permafrost interactions on Svalbard - Insights from a snow manipulation experiment and remote sensing. Svalbard Science Conference 2017-11-06 - 2017-11-08 2017.

  • Parmentier, Frans-Jan W.; Rasse, Daniel; Lund, Magnus; Bjerke, Jarle W.; Drake, Bert G.; Weldon, Simon Mark; Tømmervik, Hans; Hansen, Georg Heinrich; Nilsen, Lennart; Cooper, Elisabeth J.. No snow or too much snow: Implications for the arctic carbon cycle and modelling challenges. 4th Conference on Modelling Hydrology, Climate and Land Surface Processes 2017-09-12 - 2017-09-14 2017.

  • Parmentier, Frans-Jan W.; Rasse, Daniel; Lund, Magnus; Bjerke, Jarle W.; Drake, Bert G.; Weldon, Simon Mark; Tømmervik, Hans; Hansen, Georg Heinrich; Nilsen, Lennart; Cooper, Elisabeth J.. Carbon uptake of a subarctic peatland strongly affected by an extreme winter event. Event drivers of arctic browning 2017-05-10 - 2017-05-11 2017.

  • Jung, Young; Laffly, Dominique; Nilsen, Lennart; Kim, Se-Eun; Moreau, Myrtille; Lee, Yoo Kyung. Estimation of soil organic carbon stock in the glacier foreland of Midtre Lovénbreen, in the high arctic.. International Symposium on Remote Sensing 2016-05-10 - 2016-05-11 2016.

  • Engen, Sigrid; Runge, Claire; Hausner, Vera Helene; Fauchald, Per; Nilsen, Lennart; Brown, Greg. Social acceptability of conservation through small-scale consumptive use. Results from web-based Public Participatory GIS surveys in Norway. Fagdag AMB 2016-11-23 - 2016-11-23 2016.

  • Laffly, Dominique; Jung, Ji Young; Kim, Se-Eun; Kwon, Hyeyoung; Moreau, Myrtille; Le Nir, Yannick; Nilsen, Lennart; Lee, Yoo Kyung. From the Point to the Surface: How Bayesian Probabilities are Used to Spatialized Soil Organic Carbon, Spitsberg, Midtre Lovénbreen. The 21th International Symposium on Polar Sciences, Polar Region as a Key Observatory for the Changing Globe and Beyond 2015-05-19 - 2015-05-20 2015.

  • Nilsen, Lennart. Bridging the temporal scale from winter to summer and the spatial scale from ground plot sampling to satellite remote sensing. Svalbard Science Forums Workshop No. 3: Changes in snow/ice and pollutants and their effects on terrestrial ecosystems (fulltekst) 2012-02-13 - 2012-02-16 2012.

  • Nilsen, Lennart. Geografiske informasjonsystemer (GIS) og geodata ved UiT. (fulltekst) 2011.

  • Nilsen, Lennart; Overrein, Øystein. Svalbards planteliv. (fulltekst) 2010 ISBN 978-82-7666-275-7.s 21 - 25.

  • Beck, Pieter simon a; Karlsen, Stein Rune; Skidmore, Andrew; Nilsen, Lennart; Høgda, Kjell Arild. The onset of the growing season in northwestern Europe, mapped using MODIS NDVI and calibrated using phenological ground observations. International Symposium on Remote Sensing of Environment 2005-06-20 - 2005-06-24 2005.

  • Elvebakk, Arve; Nilsen, Lennart; Arnesen, Geir; Soltaric, Maja. Nytt kart over Svalbard. 2005.

  • Elvebakk, Arve; Nilsen, Lennart; Arnesen, Geir; Soltaric, Maja. Nytt kart over Svalbard. 2005.

  • Elvebakk, Arve; Nilsen, Lennart. High-arctic steppes in the Wijdefjorden area, central Svalbard. Second International Workshop on Circumpolar Vegetation Classification and Mapping 2004-06-02 - 2004-06-06 2004.

  • Beck, Pieter; Kalmbach, Ellen; Stien, Audun; Joly, Daniel; Nilsen, Lennart. Predictive habitat distribution modelling for plant species in an arctic tundra environment, a case study. 8th Circumpolar Symposium on Remote Sensing of Polar Environments 2004-06-08 - 2004-06-12 2004.

  • Beck, Pieter; Kalmbach, Ellen; Stien, Audun; Joly, Daniel; Nilsen, Lennart. Modelling the distribution of arctic tundra plants using GIS. Second International Conference on Circumpolar Vegetation Classification and Mapping 2004-06-02 - 2004-06-06 2004.

  • Nilsen, Lennart; Rafaelsen, Bjarne; Andreassen, Karin; Mienert, Jurgen. 3-D seismic interpretation of shallow data from Sørvestnaget, south-western Barents Sea margin. The 25th Nordic Geological Winter Meeting, Reykjavik 2002-01-06 - 2002-01-09 2002.

  • Elvebakk, Arve; Nilsen, Lennart. Indre Wijdefjorden med sidefjordar: eit botanisk unikt steppeområde på Svalbard. 2002.

  • Elvebakk, Arve; Nilsen, Lennart. Botaniske undersøkingar av Indre Wijdefjorden som potensielt verneområde. 2001.