Doctoral theses (MINA): Nye registreringer
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The importance of invertebrates on fungi in dead wood
(PhD Thesis;2022:43, Doctoral thesis, 2022)Dead wood is an important energy source in boreal forests and it hosts a high biodiversity dominated by fungi and invertebrates. Wood decay fungi are the initial decomposers of dead wood and invertebrates interact with ... -
Fine-spatial radiation measurements for heterogeneous boreal–alpine and sub-alpine vegetation
(PhD Thesis;2022:37, Doctoral thesis, 2022)Net radiation constitutes the most important component shaping the climate in the lower atmosphere and the land surface below. The flux determines the amount of energy available for exchange as sensible and latent heat, ... -
Biochar for N2O mitigation and improved delivery and retention of mineral nitrogen in compost and soil
(PhD Thesis;2022:15, Doctoral thesis, 2022)Biochar is a promising technology for simultaneously storing carbon in soils, improving crop yields and reducing greenhouse gases. In the last 20 years, research efforts into biochar and its application to soils have been ... -
Emerging challenges in the energy transition in Northern Europe : potentials and impacts
(PhD Thesis;2022:25, Doctoral thesis, 2022)The European energy transition has passed the initial stage, and both the speed and scope of decarbonisation are growing rapidly. Decarbonisation progress has been observed in the power sector, but stronger efforts are ... -
Characterization of radioactive particle exposure using micro and nano-focused X-ray techniques
(PhD Thesis;2021:95, Doctoral thesis, 2021)Radionuclides may be introduced into the environment from a variety of sources both naturally occurring, such as weathering from ore deposits, and anthropogenic, such as releases associated with the nuclear weapons and ... -
Forest disturbance and tree species elevation ranges in Costa Rica
(PhD Thesis;2021:99, Doctoral thesis, 2021)The role of disturbance in influencing interspecific competition and species persistence and distributions remains surprisingly unexplored. Disturbance may increase elevation ranges, especially at the lower range limits, ... -
The role of biotic and abiotic factors on treeline ecotone dynamics : studies using field observations and remote sensing
(PhD Thesis;2022:35, Doctoral thesis, 2022)With global warming, the forest extent is expected to change, and the transition zone between the upper forest boundary and treeless alpine landscape (i.e., the treeline ecotone) is expected to migrate to higher elevations. ... -
Impact of climate and agricultural management on hydrology and water quality : a headwater catchment scale approach
(PhD Thesis;2021:77, Doctoral thesis, 2021)Eutrophication and degradation of water quality are global problems and affect many freshwater and coastal systems. Agricultural areas are major contributors of nutrients and soil particles in streams and lakes. The ... -
Participant experiences in wildlife watching tourism
(PhD Thesis;2021:43, Doctoral thesis, 2021)This dissertation contributes to the wildlife watching tourism literature by investigating which elements are important to participants’ overall experiences and how these elements can contribute to the desired outcomes ... -
Veteran oaks, biodiversity and ecosystem functioning in southern Norway
(PhD Thesis;2021:29, Doctoral thesis, 2021)Veteran trees are keystone structures in landscapes, hotspots for biodiversity and have high cultural value. They are also declining globally, and this threatens the species that are dependent on them, and the ecosystem ... -
Assessments of the future role of bioenergy in the Nordic energy and forest sectors
(PhD Thesis;2020:64, Doctoral thesis, 2020)This thesis presents studies that describe different consequences of increased use of forest resources for energy purposes. Forest biomass is widely used in many different applications; in recent years, biofuel has been ... -
Modelling and estimating tree and forest resources of the Dry Afromontane forests in South-central Ethiopia using field and remotely sensed data
(PhD Thesis;2020:58, Doctoral thesis, 2020)For effective forest management missions, the presence of accurate information about the forest resources is indispensable. However, the absence of such relevant information for most natural forests in Ethiopia have been ... -
Effects of access to renewable energy sources and technologies on rural household energy use and the environment in Ethiopia
(PhD Thesis;2020:50, Doctoral thesis, 2020)Access to modern, affordable, and reliable energy and clean cooking facilities is critical for Ethiopia to drive its economic development, reduce poverty and curb the negative environmental and health impacts of traditional ... -
The conservation value of power-line clearings for native insect-pollinated plants and wild bees in boreal forest landscapes
(PhD Thesis;2020:31, Doctoral thesis, 2020)Worldwide declines in wild pollinators are threatening the provision of vital pollination functions and services to both native plant communities and crops. Habitat loss due to human land use changes is identified as one ... -
A novel framework for coupling mesoscale and steady-state CFD models for wind resource assessment
(PhD Thesis;2020:30, Doctoral thesis, 2020)The estimation of the energy production of wind farms is a key factor for the development of wind energy projects. Currently, these estimations utilize only a few onsite measurement points to estimate the wind resource at ... -
Leveraging non-invasive monitoring of carnivores using hierarchical models
(PhD thesis;2020:59, Doctoral thesis, 2020)The development of non-invasive approaches for monitoring wildlife populations made it feasible to obtain ecological parameters across landscapes and populations, rather than a few locations or individuals. The two most ... -
Nitrous oxide emission and turnover in arable cropping in South East Norway
(PhD Thesis;2020:18, Doctoral thesis, 2020)Nitrogen is essential for all life on Earth. With an increasing global population, the use of reactive nitrogen has increased over the last century, resulting in increasing nitrogen pollution. Leaching of nitrate (NO3-) ... -
Effects of conservation farming and biochar on carbon and nitrogen cycling in light textured soils in the sub-humid tropics
(PhD thesis;2019:41, Doctoral thesis, 2019) -
Large carnivore responses to human activity and infrastructure at multiple scales in Scandinavia
(PhD Thesis;2021:94, Doctoral thesis, 2021) -
Herbivory and climate effects on plant defenses: an ecological and molecular approach
(PhD Thesis;2019:28, Doctoral thesis, 2019)Knowledge of plant defense responses and how they interact with biotic (e.g., herbivores) and abiotic (e.g., temperature) factors is of fundamental importance for understanding ecosystem functioning. Increases in temperature ...