Blar i Master’s theses (MINA) på tittel
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Testing host choice of Ips typographus in Norway spruce and two North American spruce species, using field studies and lab analysis
(Master thesis, 2019)The spruce bark beetle Ips typographus is one of the most damaging pests in Europe’s boreal forests and cause catastrophic tree mortality during outbreaks. Norway spruce (Picea abies), an economically important forest tree, ... -
The Diversity and Behavior of Pollinating Insects in Apple Orchard
(Master thesis, 2023)Diverse assemblages of insects improve the overall productivity and stability of natural and agricultural ecosystems. Cultivated fruit crops, such as apples, that require pollination services by insects are particularly ... -
The effect of distance from forest edge on flower visitor frequency and fruit set : a case study of Cucumis sativa around Kakamega forest
(Master thesis, 2018)Pollination is a key ecosystem function that is important for food production. This service is maintained by natural habitats which provide a dwelling place for these pollinators. However, these natural habitats are on the ... -
The effect of long-term experimental warming on lichens and vascular plants in an alpine Dryas heath
(Master thesis, 2018)Global warming affects species diversity and ecosystems throughout the world, and alpine and arctic plant communities are considered to be particularly sensitive. During the last decades, several studies have shown a shift ... -
The effects of gypsum and açai as amendments on bauxite residue as a growth medium: chemical properties, mobility of toxic trace elements and vegetation experiment
(Master thesis, 2022)As the third most common element in the earth's crust, aluminum possesses functional qualities for a variety of industrial and household applications. The extraction of primary aluminum from bauxite ore accelerated in ... -
The effects of increased soil moisture on the timing of senescence of three plants grazed by Svalbard reindeer
(Master thesis, 2023)Climate change is affecting the Arctic faster than anywhere else on the planet, with increases in temperature and precipitation predicted to have significant effects on Arctic ecosystems. Water availability is of key ... -
The exposure of terrestrial biota to naturally occuring radiation and stable elements : case Orrefjell, a risk assessment
(Master thesis, 2018)Naturally occurring radioactive materials (NORM) can be found all over the world. Investigations of possible effects on humans and the environment have mostly focused on exploited sites like mines and their vicinity, while ... -
The fate of nitrogen in an Acrisol in Zambia under different management practices
(Master thesis, 2019)A 10-day 15N tracer experiment, using 15N-NO3 and 15N-NH4, was conducted on an Acrisol in Mkushi, Zambia, in a rain-fed maize field. The addition of the 15N label, as either 15N-NO3 or 15N-NH4, was equivalent to 0.1g/m2 ... -
The good, the bad and the grizzly : assessing human impact on grizzly bears (Ursus arctos horribilis) at army cutworm moth (Euxoa auxiliaris) aggregation sites in the Shoshone National Forest, Wyoming
(Master thesis, 2018)Successful management has saved the grizzly bear (Ursus arctos horribilis) from extirpation in the contiguous USA. As the population has grown, it has expanded its distribution. Grizzly bears now congregate from July to ... -
The Holocene vegetation history of an isolated, high-arctic plant diversity hot spot
(Master thesis, 2018)Through high throughput sequencing of ancient, environmental DNA collected from lake sediment cores (sedaDNA), this study revealed postglacial vegetation change during the last ~12.000 years in a high-Arctic plant diversity ... -
The hunt for maternity colonies : a pilot study of using radio telemetry to track bats in southeast Norway
(Master thesis, 2018)There is still a gap of knowledge regarding bats in Norway. More studies are needed to explore which habitats are important for the maternity colonies, and which methods are most suited to find them. This is especially ... -
The impact of planting basins under conservation farming with and without biochar on aggregate stability, soil organic carbon, and pH in Zambian Acrisols
(Master thesis, 2018)Conservation Farming (CF) in Sub-Saharan Africa (SSA), including reduced tillage, return of crop residue, and crop rotation, has been found to increase maize yields in rain-fed agriculture. In combination with the application ... -
The importance of microclimate and plant species richness for alpine arthropods in a Dryas heath at Finse
(Master thesis, 2023)Alpine ecosystems are characterized by low temperatures, strong winds, and high solar radiation, which can lead to harsh living conditions for flora and fauna. As climate changes, larger climatic variations and the number ... -
The Influence of Body Size on the Foraging Strategy of the Male African Savannah Elephant in Makgadikgadi Pans National Park, Botswana
(Master thesis, 2023)Differences in feeding behaviour and species selection, due to the difference in body size, between the sexes for the African savannah elephants (Loxodonta africana) is well documented. However, there are also substantial ... -
The influence of nest-site limitation on the species richness and abundance of bees : linking biodiversity and geology
(Master thesis, 2018)There is mounting evidence of declines in global biodiversity. Declining wild bee populations are subject to concern because bees are considered the most important pollinators worldwide, contributing to the production of ... -
The influence of nesting resources on bee-flower interactions, revealed through functional traits, network structure and geology
(Master thesis, 2018)Bees are the major pollinators in most parts of the world, but their diversity have declined as a consequence of environmental changes, during the last century. To counteract this decline, an understanding of the bees and ... -
The presence of microplastics on the Norwegian Continental Shelf and in Rio Almendares, Havana
(Master thesis, 2018)Microplastics are becoming more frequently detected in all natural environments worldwide as global demand for plastic production continues to rise and studies related to microplastic research are becoming more prevalent. ... -
The role of wildlife tourism in conservation in Norway
(Master thesis, 2017)Nature-based tourism is a growing tendency in Norway and in the rest of the world. One of the sectors that seem to grow most rapidly is wildlife watching. Based on existing data from quantitative and qualitative research ... -
The Rothschild's giraffe as a potential biological controller of invasive native Acacia species in Lake Mburo National Park, Uganda
(Master thesis, 2018)Shrub and woody encroachment can have serious ecological impacts and is an increasingly common problem in many ecosystems, from the African savanna to the Arctic. Lake Mburo National Park in Uganda is experiencing severe ...