Browsing Faculty of Environmental Sciences and Natural Resource Management (MINA) by Document Types "Doctoral thesis"
Now showing items 121-135 of 135
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Subsoil nitrogen utilization and N₂O formation in Norwegian grass-clover forage systems
(PhD thesis;2023:7, Doctoral thesis, 2023)Value creation in Norwegian agriculture is primarily based on milk and meat production, which depend in part on perennial grassland-based forage production. Roughly 60% of the fully cultivated land in Norway is used for ... -
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 effect of biochar in combination with mineral or organic fertilizers on crop production in Nepal
(PhD Thesis;2018:23, Doctoral thesis, 2018)The majority of poor people in Nepal relies on agriculture for employment and livelihood sustenance. Declining soil fertility and ongoing climate change are the key challenges faced by farmers, with adverse effects on crop ... -
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 ... -
The recycling potential of phosphorus in secondary resources
(PhD Thesis;2016:35, Doctoral thesis, 2017-07-12)Mineable rock phosphate is a limited resource. Replacing mineral phosphorus (P) fertilizer with P-rich secondary resources is one way to manage P more efficiently. The Norwegian potential to replace mineral P fertiliser ... -
Timeliness in seedbed preparation for spring cereals : studies to prepare for climate change in Norway
(PhD Thesis;2019:13, Doctoral thesis, 2019)Future increases in winter and spring precipitation in Norway may exacerbate the dilemma of spring fieldwork that farmers have, concerning topsoil compaction versus delayed sowing on autumn-ploughed soil. Both topsoil ... -
Toxicity of single biocides and their mixtures in the algae Chlamydomonas reinhardtii
(PhD Thesis;2015:69, Doctoral thesis, 2017-07-12)Aquatic organisms are exposed to several organic compounds including biocides. These compounds are widely used, for instance as disinfectants, in antifouling paints, or as material preservatives. Biocides can originate ... -
Trace metal availability in soils under different land uses of the Danube basin in Croatia
(PhD Thesis;2011:65, Doctoral thesis, 2011)Soils are non-renewable resource of biological, chemical and physical properties. One of the ecological functions of the soil is its capacity to filter and buffer trace metals. Trace metals can pose a threat on the one ... -
Tree species effects on litter decomposition and soil carbon
(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 ... -
Understanding the structure-function relationship of honey bee Vitellogenin
(PhD Thesis;2022:8, Doctoral thesis, 2022)This thesis focuses on the structure and molecular function of Vitellogenin (Vg) from honey bees (Apis mellifera). Vg is an ancient protein found in animals. Most biological processes depend on proteins' activities, and ... -
Variability and uncertainty in soil physical properties : effects of data source on functional criteria
(PhD Thesis;2011:40, Doctoral thesis, 2011)Modeller har blitt uunngåelige verktøy for en lang rekke problemstillinger knyttet til landbruk og miljø. Samtidig er modellering forbundet med usikkerhet, noe som kan ha konsekvenser når beslutninger skal fattes. En av ... -
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 ... -
Water storage dynamics of papyrus wetlands and land use change in the Lake Kyoga basin, Uganda
(PhD Thesis;2018:69, Doctoral thesis, 2018)Papyrus wetlands of the upper Nile basin in Eastern Africa provide water and fertile soils that are essential to sustain agricultural production. Due to the need to improve food security, there is increased pressure to ... -
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 ... -
Å legge til rette for naturbaserte reiselivsopplevelser : en studie av forholdet mellom tilbydere, ressurser og produkter
(PhD Thesis;2020:02, Doctoral thesis, 2020)Naturbasert reiseliv er opplevelser, næringsvirksomhet og bruk av ressurser i naturen knyttet til opphold i naturområder. Det omfatter et bredt spekter av steder, aktiviteter og måter å være i naturen på. Det inkluderer ...