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Browsing Doctoral theses (INA) by Title

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Now showing items 1-20 of 31

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    • Aesthetic experiences and behaviour in nature-based tourism 

      Breiby, Monica A. (PhD Thesis;2014:61, Doctoral thesis, 2014)
      With the increasing focus on aesthetic experiences and symbolic values of products and services, this thesis addresses central aesthetic dimensions in nature-based experiences, and how they are linked to tourist behaviour. ...
    • Afar pastoralists in a changing rangeland environment 

      Tsegaye, Diress (PhD Thesis;2010:33, Doctoral thesis, 2010)
      Pastoralists have been using arid and semi-arid rangelands to produce their livelihood outputs through livestock production for centuries. However, recent changes in land use and associated impacts on biodiversity and ...
    • Analyses of the use of the Norwegian forest sector in climate change mitigation 

      Sjølie, Hanne Kathrine (PhD Thesis;2011:28, Doctoral thesis, 2011)
      The forest sector plays important roles in the global carbon cycle. Firstly, the global carbon cycle. Firstly, the global carbon storage in forest biomass and soil is of a considerable size, and the total carbon sequestration ...
    • Angling tourism and landowner based management of Atlantic salmon stocks in the Trondheim fjord region of Norway 

      Stensland, Stian (PhD Thesis;2011:26, Doctoral thesis, 2011)
      Angling for Atlantic salmon (Salmo salar L.) is a popular recreational activity and provides income for Norwegian landowners holding fishing rights. Abundance and distribution of salmon have however declined markedly during ...
    • Bio-economic aspects of moose : forage interactions - gains and compromises of interdisciplinary research 

      Wam, Hilde Karine (PhD Thesis;2010:27, Doctoral thesis, 2010)
      Interdisciplinary research is a prerequisite for applied progress in natural resource management. Still, most relevant studies are done by economists alone, and not in collaboration with ecologists. I discuss the ideological ...
    • Characterizing individual tree biomass for improved biomass estimation in Norwegian forests 

      Smith, Aaron (PhD Thesis;2015:60, Doctoral thesis, 2020-11-10)
      Accurate estimates of tree biomass are necessary in order to realize climate change mitigation strategies such as large-scale carbon accounts of sources and sinks through time and biomass stocks for bioenergy. Biomass is ...
    • Drivers of the diversity and distribution of wild bees in a species poor region 

      Sydenham, Markus Arne Kjær (PhD Thesis;2016:23, Doctoral thesis, 2020-11-13)
      Bee diversity is declining globally. On a European scale, roughly 10% of the species are considered threatened, but the number may be even higher. The threatened status of bees depends on both the taxonomic and spatial ...
    • Ecology, conservation and bioactivity of food and medicinal plants in East Africa 

      Stangeland, Torunn (PhD Thesis;2010:29, Doctoral thesis, 2010)
      In East Africa 70-80 % of the population is subsistence farmers. The rural health system is often poorly equipped both with personnel and medicines, and many depend on the use of medicinal plants for their primary health ...
    • Economic analysis of carbon sequestration and storage in Tanzanian forests 

      Rannestad, Meley Mekonen (PhD Thesis;2015:81, Doctoral thesis, 2020-11-10)
      Tropical deforestation is among the principal causes of emissions of carbon dioxide (CO2). Nevertheless, tropical forests play an important role in regulating global climate by serving as carbon reservoirs. This has led ...
    • Economic perspectives of market integration and demand flexibility within a smart grid dominated power sector 

      Ilieva, Iliana (PhD Thesis;2015:56, Doctoral thesis, 2020-11-19)
      The developments related to integration of renewable energy sources, smart grid and market liberalization make the transition of the power system to a new state inevitable. This PhD work aims to analyze some of the market ...
    • Effects of climate, historical logging and spatial scales on beetles in hollow oaks 

      Pilskog, Hanne Eik (PhD Thesis;2016:90, Doctoral thesis, 2016)
      Veteran trees are keystone structures and important biodiversity habitats, but they are declining on a global scale. In Europe, old oaks (Quercus spp.) are one of the most important habitat trees for biodiversity, yet the ...
    • Estimation of biomass in tropical rainforest using airborne laser scanning 

      Hansen, Endre Hofstad (PhD Thesis;2015:12, Doctoral thesis, 2019-01-08)
      Forest inventories based on field sample surveys, supported by auxiliary remotely sensed data, have the potential to provide transparent and confident estimates of forest carbon stocks required in climate change mitigation ...
    • Fire dynamics in savanna woodlands of Tanzania : spatial and temporal patterns and relationships with woody species 

      Tarimo, Beatrice Christopher (PhD Thesis;2016:26, Doctoral thesis, 2020-11-13)
      Fire is an important ecological factor that influence the composition, structure and distribution of tropical savannas. Fire has been part of tropical savannas throughout recorded history. These savannas experience more ...
    • Food provisioning in a generalist predator : selecting, preparing, allocating and feeding prey to nestlings in the Eurasian kestrel (Falco tinnunculus) 

      Steen, Ronny (PhD Thesis;2010:36, Doctoral thesis, 2010)
      Prey handling behaviour is important for prey selection, but are poorly known for raptors. Therefore, selection and handling of prey by European kestrels (Falco tinnunculus) was studied by observing prey transfer outside ...
    • Forests and woodlands of Tanzania : interactions between woody plant structure, diversity, carbon stocks and soil nutrient heterogeneity 

      Shirima, Deo Dominick (PhD Thesis;2015:53, Doctoral thesis, 2019-01-04)
      In recent years, structural components such as woody species richness, diversity, canopies and non-woody lifeforms in tropical forests and woodlands have experienced increasing rates of degradation and deforestation due ...
    • Genetic structure and gene flow in a continuously distributed large terrestrial carnivore : the brown bear (Ursus arctos) in Northern Europe 

      Schregel, Julia (PhD Thesis;2015:72, Doctoral thesis, 2020-11-10)
      The aim of this thesis was to investigate large scale population structure and gene flow in the Northern European brown bear (Ursus arctos). Brown bears were reduced in numbers to near extinction during recent centuries ...
    • 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 ...
    • Improving forest inventory and monitoring by combining remotely sensed three-dimensional and spectral information 

      Ørka, Hans Ole (PhD Thesis;2011:22, Doctoral thesis, 2011)
      Forest inventory has benefited from remote sensing for more than 80 years. Spectral information from aerial cameras has been the dominant data source during this period. However, over the past decade the use of three-dimensional ...
    • Integrating life cycle assessment and forest modelling for environmental and economic assessment of forest based bioenergy in Norway 

      Soldal, Ellen (PhD Thesis;2015:11, Doctoral thesis, 2018-12-19)
      There is a growing interest in bioenergy, both nationally and internationally, due to the increasing emissions of greenhouse gases. The Norwegian forest growing stock is increasing and can be used to produce a range of ...
    • Invasion potential and host suitability for selected bark- and wood-boring insect pests 

      Flø, Daniel (PhD Thesis;2016:72, Doctoral thesis, 2016)
      Introduction of nonnative species is often a by-product of increasing global trade. Some nonnative species may reach extremely high population densities, deplete resources and cause extensive economic and ecological damage ...

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