Browsing Brage NMBU by Author "Ohlson, Mikael"
Now showing items 1-20 of 34
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A high-throughput FTIR spectroscopy approach to assess adaptive variation in pollen quality
Zimmermann, Boris; Bagcioglu, Murat; Tafintseva, Valeria; Kohler, Achim; Ohlson, Mikael; Fjellheim, Siri (Journal article; Peer reviewed, 2017) -
Animal Successional Pathways for about 200 Years Near a Melting Glacier: A Norwegian Case Study
Hågvar, Sigmund; Ohlson, Mikael; Flø, Daniel (Chapter, 2017)Here, we explore 200 years of arthropod succession by using dated moraines in a Norwegian glacier foreland. Surface active beetles (Coleoptera) and spiders (Aranea) were sampled by pitfall trapping, and springtails ... -
Avvirkning i form av åpne hogstformer på Varaldskogen, Kongsvinger : en detaljstudie fra 1945-2016
Bårdseng, Gina Ørslien (Master thesis, 2021)Skogbehandlingen har gjennom tiden endret seg fra å være et høstingsskogbruk med fokus på hogst av store dimensjoner til hogstformer som bledningshogst, gruppehogst og stripehogst. Videre gikk det fram mot et bestandsskogbruk ... -
Challenging conventional carbon wisdom : a climate driven vegetation shift from spruce to beech may not change the size of the carbon pool in southeast Norwegian forest soils
Ransedokken, Yngvild (Master thesis, 2016-08-31)Forest soils represents the largest terrestrial carbon (C) pool and thus play a critical role in the global C cycle. Predicted climate change is expected to change the size of forest soil C pools by driving a shift in ... -
Combining Chemical Information From Grass Pollen in Multimodal Characterization
Diehn, Sabrina; Zimmermann, Boris; Tafintseva, Valeria; Seifert, Stephan; Bağcıoğlu, Murat; Ohlson, Mikael; Weidner, Steffen; Fjellheim, Siri; Kohler, Achim; Kneipp, Janina (Peer reviewed; Journal article, 2020)The analysis of pollen chemical composition is important to many fields, including agriculture, plant physiology, ecology, allergology, and climate studies. Here, the potential of a combination of different spectroscopic ... -
Decomposition of Beech and Spruce Litter in Neighbouring Beech and Spruce Forests
Verne, Ingrid Kleppenes (Master thesis, 2017)Climate change is expected to cause a transformation from spruce to beech dominated forests in a large part of southeast Norway. A shift in dominating tree species may have a large effect on the factors controlling the ... -
Decreases of carbon and nitrogen in the soils of a 20-year chronosequence of restored wetlands, Washington State, USA
Kroe, Colleen Suzanne (Master thesis, 2016-09-02)Freshwater wetland restoration is intended to replace both area and function as part of compensatory mitigation, including restoration of biogeochemical soil processes. This study examined the amount of carbon (C) and ... -
Discrimination of grass pollen of different species by FTIR spectroscopy of individual pollen grains
Diehn, Sabrina; Zimmermann, Boris; Tafintseva, Valeria; Bağcıoğlu, Murat; Kohler, Achim; Ohlson, Mikael; Fjellheim, Siri; Kneipp, Janina (Peer reviewed; Journal article, 2020) -
En brannhistorisk undersøkelse på Varaldskogen
Bråthen, Martin (Master thesis, 2016-08-15)Sammendrag: Stammeskiver fra stubber etter hogst og levende og døde furutrær med brannlyrer ble samlet inn fra fem innsamlingsfelt (300-400 daa) for å forklare brannhistorien på Varaldskogen (50 km2) sørøst i Norge. En 730 ... -
En undersøkelse av LiDAR sin egnethet for å kartlegge bakkevegetasjon
Øie, Ida (Master thesis, 2020)LiDAR er i dag benyttet til mange formål, men er mest benyttet i skoginventering og terrengmodellering. Det sier altså noe om hva som befinner seg i det øverste vegetasjonssjiktet – skogen, og det som befinner seg helt ... -
Er skogkartlegging med flybåren laser en mer hensiktsmessig måte for å finne områder med naturskog, enn Natur i Norge (NiN)'s naturskogkriterier? : en gjennomgang av to metoder for å skille gammel plukkhogd skog fra gammel flatehogd skog
Skeie, Margrethe Fønhus (Master thesis, 2019)Skogen i Norge har ulike naturgitte forutsetninger på regional skala, hvor klima, vekstforhold og skogbrukshistorie påvirker det biologiske mangfoldet. Fragmentering av skogområder, langtransportert forurensning, skogbruk, ... -
Establishment, survival and dispersal limitations of pioneer plants in a Norwegian glacier foreland as revealed by seed sowing, transplantation and seed bank experiments
Strømme, Anne-Sofie Bergene (Master thesis, 2016-09-02)Glaciers are melting and retreating on a global scale due to climate change. Rapid glacier retreat leave behind large areas of barren ground, in which primary succession and plant establishments can start. However, a typical ... -
Historic range of variability in the fire regime of a Fennoscandian boreal forest : the Trillemarka-Rollagsfjell Nature Reserve
Blanck, Ylva-li (PhD Thesis;2015:3, Doctoral thesis, 2020-11-13)Fire is the principal natural disturbance process in the boreal forest. Thus, knowledge about the historical fire regime is essential for understanding present day forest ecosystems, which in turn is important for implementing ... -
Hvordan ettervirkningene av en 26 år gammel fin-skala forstyrrelse og lystilgang i skogbunnen påvirker etablering og vekst hos gran, furu, rogn, bjørk og hårfrytle i en granskog i SØ-Norge
Lima, Oline Rosnes (Master thesis, 2021)Forstyrrelser og suksesjoner er en del av den naturlige dynamikken i boreal skog, og skaper store og små, romlige og tidsmessige endringer. Endringene fører til heterogenitet i økosystemene og kan øke artsdiversiteten. ... -
Impacts of climate change on the boreal forest ecosystem. Scientific Opinion of the Panel on Alien Organisms and Trade in Endangered species (CITES) of the Norwegian Scientific Committee for Food and Environment
Kausrud, Kyrre Linné; Vandvik, Vigdis; Flø, Daniel; Geange, Sonya Rita; Hegland, Stein Joar; Hermansen, Jo Skeie; Hole, Lars Robert; Ims, Rolf Anker; Kauserud, Håvard; Kirkendall, Lawrence Richard; Nordén, Jenni; Nybakken, Line; Ohlson, Mikael; Skarpaas, Olav; Wendell, Micael; de Boer, Hugo; Eldegard, Katrine; Hindar, Kjetil; Järnegren, Johanna; Måren, Inger Elisabeth; Nielsen, Anders; Nilsen, Erlend Birkeland; Rueness, Eli Knispel; Thorstad, Eva Bonsak; Velle, Gaute (Peer reviewed; Journal article, 2022) -
Impacts of climate change on the boreal forest ecosystem. Scientific Opinion of the Panel on Alien Organisms and Trade in Endangered species (CITES) of the Norwegian Scientific Committee for Food and Environment
Kausrud, Kyrre Linné; Vandvik, Vigdis; Flø, Daniel; Geange, Sonya Rita; Hegland, Stein Joar; Hermansen, Jo Skeie; Hole, Lars Robert; Ims, Rolf Anker; Kauserud, Håvard; Kirkendall, Lawrence Richard; Nordén, Jenni; Nybakken, Line; Ohlson, Mikael; Skarpaas, Olav; Wendell, Micael; de Boer, Hugo; Eldegard, Katrine; Hindar, Kjetil; Krokene, Paal; Järnegren, Johanna; Måren, Inger Elisabeth; Nielsen, Anders; Nilsen, Erlend Birkeland; Rueness, Eli Knispel; Thorstad, Eva Bonsak; Velle, Gaute (Journal article; Peer reviewed, 2022) -
Klimaendringer og virkninger på hovedøkosystem skog.
Kausrud, Kyrre; Vandvik, Vigdis; Flø, Daniel; Geange, Sonya Rita; Hegland, Stein Joar; Hermansen, Jo Skeie; Hole, Lars Robert; Ims, Rolf Anker; Kauserud, Håvard; Kirkendall, Lawrence R.; Nordén, Jenni; Nybakken, Line; Ohlson, Mikael; Skarpaas, Olav; Wendell, Micael; de Boer, Hugo; Eldegard, Katrine; Hindar, Kjetil; Järnegren, Johanna; Krokene, Paal; Måren, Inger Elisabeth; Nielsen, Anders; Nilsen, Erlend Birkeland; Rueness, Eli Knispel; Thorstad, Eva Bonsak; Velle, Gaute (VKM Report;2022:15, Research report, 2022) -
Local pollen analysis in a boreal forest setting : vegetation and land-use history at the summer farm Finnerudseter in south-eastern Norway
Hertzberg, Maria Knagenhjelm (Master thesis, 2016-07-27)Traditional cultural landscapes are threatened in Europe due to changed land-use practices. However, the historical extent of this human land-use practice is not yet fully known. This thesis describes the vegetation history ... -
Mapping above- and below-ground carbon pools in boreal forests: the case for airborne Lidar
Kristensen, Terje; Næsset, Erik; Ohlson, Mikael; Bolstad, Paul V.; Kolka, Randall (Journal article; Peer reviewed, 2015) -
Matrix-assisted laser desorption/ionization time-of-flight mass spectrometry (MALDI-TOF MS) shows adaptation of grass pollen composition
Diehn, Sabrina; Zimmermann, Boris; Bagcioglu, Murat; Seifert, Stephan; Kohler, Achim; Ohlson, Mikael; Fjellheim, Siri; Weidner, Steffen; Kneipp, Janina (Journal article; Peer reviewed, 2018)MALDI time-of-flight mass spectrometry (MALDI-TOF MS) has become a widely used tool for the classification of biological samples. The complex chemical composition of pollen grains leads to highly specific, fingerprint-like ...