Browsing Doctoral theses (INA) by Title
Now showing items 13-32 of 33
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Fire dynamics in savanna woodlands of Tanzania : spatial and temporal patterns and relationships with woody species
(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)
(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
(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 ... -
Game vertebrate responses to rural populations in neotropical protected areas
(PhD Thesis;2016:36, Doctoral thesis, 2022-11-15)Medium- to large-bodied vertebrates are of critical importance to the integrity of natural ecosystems, sustaining the composition and structure of plant and faunal communities and the associated ecosystem services. Through ... -
Genetic structure and gene flow in a continuously distributed large terrestrial carnivore : the brown bear (Ursus arctos) in Northern Europe
(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
(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
(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
(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
(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 ... -
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 ... -
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 ... -
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 ... -
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 ... -
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 ... -
Modeling integration of renewable energy sources into Inland Norway energy system
(PhD Thesis;2016:67, Doctoral thesis, 2020-11-24)Increasing attention to climate change causes and impacts, and the fact that the world owns limited energy resources, have tremendously increased the awareness of countries towards sustainable energy production and ... -
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 ... -
Nature-based tourism and the role of aesthetic dimensions
(PhD Thesis;2015:29, Doctoral thesis, 2022-11-15)The overall goal of the thesis is twofold. First, it aims to increase knowledge of aesthetics in nature-based tourism and to develop certain aesthetic dimensions in such a context. Second, it aims to increase knowledge of ... -
Renewable energy in Northern European power markets : effects, challenges and integration options
(PhD Thesis;2015:71, Doctoral thesis, 2020-11-10)The Northern European power system is currently experiencing an extensive growth in production from renewable energy sources (RE), which is expected to continue in the coming decades. Due to the variable, uncertain and ... -
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 ... -
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 ...