Blar i Faculty of Environmental Sciences and Natural Resource Management (MINA) på forfatter "Ohlson, Mikael"
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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 ... -
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 ... -
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. ... -
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 ... -
Naturskogsbegrepet i "Natur i Norge" (NiN) og sammenheng med målt epifyttisk lavbiomasse
Fjellberg, Elise Kittelsen (Master thesis, 2018)Mer enn 40 % av Norges landareal er dekket av skog og omtrent 60% av alle landets kjente arter er knyttet til dette biomet. Skogbruk har vært en viktig næring i landet i lengre tid, og skogbruket i Norge og Fennoskandia ... -
Seasonal variation in chemical composition of Chamerion angustifolium pollen as measured by Fourier-Transform Infrared Spectroscopy
Kirkhorn, Simen Arne (Master thesis, 2019)The quality of pollen is of fundamental importance for male reproductive success in spermatophytes, but our knowledge as to whether pollen quality is plastic and varies throughout the flowering season is limited. Pollen ... -
Seed dispersal and phenology of the invasive plant species Bunias orientalis and Lupinus polyphyllus in South-East Norway
Rask-Jensen, Cathrine (Master thesis, 2018)The alien, invasive species Bunias orientalis and Lupinus polyphyllus are in expansion in Norway and pose an ecological threat to native species. The species form large and dense populations on wastelands, previous ... -
Small-scale spatial variation in soil properties within an old-growth European beech forest and two Norway spruce forests
Thomassen, Eivind (Master thesis, 2016-09-02)The aim of this study was to investigate species related differences in soil carbon and nitrogen concentration, pH and condensed tannin content in topsoil’s in Norway spruce (Picea abies) European beech (Fagus sylvatica) ... -
Soil carbon stocks in different vegetation classes across the treeline ecotone in central- and southern Norway
Aasgård, Olav With (Master thesis, 2022)The expansion of the treeline into the currently treeless alpine tundra may have considerable impacts on carbon storage. Recent studies have shown that the expansion of trees into the alpine tundra could lead to an increase ... -
Soil carbon storage in the forest-tundra ecotone : insights from field- and remotely sensed data
Devos, Claire Céline (PhD Thesis;2023:84, Doctoral thesis, 2023)Due to climate warming, forests are moving to higher elevations and latitudes at the expense of treeless tundra. Recent studies suggest that these vegetation shifts promote soil organic carbon (SOC) losses that exceed ... -
Tree species effects on litter decomposition and soil carbon
Ransedokken, Yngvild (PhD thesis;2022:18, Doctoral thesis, 2022)Boreal forests soils play an important role in mitigating climate change as they are the largest terrestrial carbon pool. The accumulation of soil carbon is regulated by the balance of carbon and nitrogen input from plant ... -
Treeline dynamics in Trillemarka - Rollagsfjell
Mortensen, Adrian (Master thesis, 2016-09-02)The environmental effects that determine the altitude of the tree line have been discussed for a long time. Alpine ecosystems are known to be particularly sensitive to climate warming, and both biotic interactions as well ... -
Variable soil carbon stocks across fine spatial scales in a natural boreal forest landscape
Åsgård, Lisa (Master thesis, 2021)Boreal forests, and especially boreal forest soils, are of considerable importance in global carbon dynamics and climate regulation. There are several studies that have modelled and quantified boreal soil carbon stocks, ...