Browsing Doctoral theses (INA) by Issue Date
Now showing items 1-20 of 33
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Lichen-gastropod interactions : Chemical defence and ecological consequences of lichenivory
(PhD Thesis;2010:2, Doctoral thesis, 2010)Herbivory are considered a significant factor regulating plant communities. Some mammals, e.g. reindeers, substantially influence lichen-dominated communities. The impact on lichens posed by invertebrate grazers is less ... -
Food provisioning in a generalist predator : selecting, preparing, allocating and feeding prey to nestlings in the Eurasian kestrel (Falco tinnunculus)
(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 ... -
Ecology, conservation and bioactivity of food and medicinal plants in East Africa
(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 ... -
Woody species regeneration and diversity in a seasonally dry forest in northeastern Thailand
(PhD Thesis;2010:41, Doctoral thesis, 2010)Forest communities are complex because many factors are associated with the spatial patterns of woody species. The main objective of this thesis is to provide a better understanding of how woody species composition and ... -
Bio-economic aspects of moose : forage interactions - gains and compromises of interdisciplinary research
(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 ... -
Afar pastoralists in a changing rangeland environment
(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 ... -
Liquid water absorption in wood cladding boards and log sections with and without surface treatment
(PhD Thesis;2010:6, Doctoral thesis, 2010)Water absorption in wood in service is of great importance both because of the resulting dimensional changes of the wood and because of the risk of deterioration by microorganisms at wood moisture content levels above 20 ... -
The Norwegian market for natur based tourism products : characteristics and implications for segmentation and product development
(PhD Thesis;2011:54, Doctoral thesis, 2011)Nature based tourism is often considered as an important area for rural municipalities when traditional industries such as agriculture, forestry and manufacturing has been downgraded and rationalised because they are no ... -
Local and systemic defence responses in trees against pathogenic fungi : differences revealed at the transcriptional level
(PhD Thesis;2011:43, Doctoral thesis, 2011)Forest trees dominate the earth surface and has special place in the economy and ecology of the planet. Due to the long life span of woody trees they are challenged by the abiotic and biotic factors. Over the long history ... -
Life cycle assessment of mountain forest wood fuel supply chains : case studies from Norway and Italy
(PhD Thesis;2011:57, Doctoral thesis, 2011)Concerns about the fast growth in greenhouse gas emissions have encouraged several countries to increase their use of renewable energy. According to the EU’s Renewable Energy Directive (RED), 20% of all the energy production ... -
Improving forest inventory and monitoring by combining remotely sensed three-dimensional and spectral information
(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 ... -
Sustainable tourism development in a Norwegian national park area : exploring social aspects
(PhD Thesis;2011:71, Doctoral thesis, 2011)Vast areas have been subject to an active nature protection policy in Norway over the past decades. Sixteen per cent of the land mass on the mainland is now protected in one way or another, and national parks take up the ... -
Angling tourism and landowner based management of Atlantic salmon stocks in the Trondheim fjord region of Norway
(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 ... -
Analyses of the use of the Norwegian forest sector in climate change mitigation
(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 ... -
Modelling height, height growth and site index from national forest inventory data in Norway
(PhD Thesis;2013:62, Doctoral thesis, 2013)The present study aimed to develop dominant height growth models, site index prediction models, individual tree height growth models, and height-diameter models using Norwegian national forest inventory (NFI) data. Data ... -
Aesthetic experiences and behaviour in nature-based tourism
(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. ... -
Effects of climate, historical logging and spatial scales on beetles in hollow oaks
(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 ... -
Invasion potential and host suitability for selected bark- and wood-boring insect pests
(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 ... -
Modeling hourly energy consumption in Norwegian buildings
(PhD Thesis;2016:91, Doctoral thesis, 2016)Growing world population, unabated use of fossil fuels, and economies aiming at continuous growth exhaust the planet’s natural resources and add to an augmented greenhouse effect. Besides limiting population growth in less ... -
Integrating life cycle assessment and forest modelling for environmental and economic assessment of forest based bioenergy in Norway
(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 ...