Filtyp
For centuries, people have appreciated the taste of wild mushrooms which can be found in nature throughout the European continent and the Fennoscandian peninsula. This is especially so for those of the order of Cantharellales, where you find the Golden Chanterelle among others. Today the commercial aspect of mushroom harvesting has resulted in regulations and guidelines set out by the Nordic Counc
The widespread use of plastic mulch in agriculture is rapidly increasing due to intensified farming practices. While plastic mulch can enhance crop yields significantly, it also introduces challenges related to waste management and environmental degradation. This study focuses on the application of Sentinel-2A imagery and the Maximum Likelihood Classifier (MLC) to classify plastic foils used in ea
Leaf Area Index (LAI) is an important parameter for monitoring vegetation status and estimating crop yield, essential for precision agriculture, forestry and natural resource management. Therefore, estimating the LAI with high spatial resolution and temporal flexibility is crucial for providing precise and timely information to make informed decisions. This study focuses on optimizing the estimati
This thesis evaluated the performance of the water balance model BROOK90 for an even aged spruce forest in southern Sweden. The water balance of the forest was modelled from 1950 onwards to find periods and patterns of drought. Moreover, the impact of climate change as well as thinning as a strategy to reduce drought stress on the water balance were evaluated. Hyltemossa, a managed Norway spruce f
Currently, there is no direct support for storing simulation output within semantic 3D city models (CityGML). This master thesis explores a potential methodology for this purpose, with a focus on using appearances of 3D geometries instead of creating generic city objects and attributes or adding an Application Domain Extension (ADE). The caveat with the last two methods is that they require addit
The growth of the wild boar (Sus Scrofa) population in Sweden results in increasing wild boar damage on agricultural grounds, thereby influencing the livelihoods of farmers. Finding mitigation strategies that are positive for both wildlife and human society is challenging. It is therefore essential to enable the creation and investigation of precise and differentiated wild boar management strategi
The tall perennial herb Gladiolus imbricatus is an endangered species within plant communities of semi-natural grasslands. Coastal meadows, extensively managed as pastures or meadows, are amongst its favored habitats and thrive with biodiversity in fauna and flora. However, following major land-use changes during the last century, proactive endeavors are necessary to prevent a loss of rare fauna a
Leaf-level vegetation dry matter and water content as plant traits have been commonly studied, but few studies have investigated the capabilities of satellite remote sensing in estimating community-level dry matter content as percentage (DMCaP) in forage crops for agricultural applications. It is a crucial quality factor for maximizing nutrient yield and producing palatable forage. In this thesi
CityGML is an important standard to present 3D geometry, topology, semantics and appearance that together with 3D city models, which have had increased use within analysis and applications, such as emergency response, energy consumption and occupancy measurement. However, the standard’s querying and integration capabilities can still be further explored. One way to do this is through the Semantic
The ongoing war in Ukraine has inflicted wide ranging environmental damages, each with their own set of consequences. The catastrophic failure of the Kakhovka Hydroelectric Dam on the 6th of June 2023 initiated a new cascade of environmental destruction, as hundreds of square kilometres were rapidly inundated, with hundreds more left dehydrated as the Kakhovka reservoir drained away. Within the af
Due to the increasing CO2 concentrations in the atmosphere caused by anthropogenic greenhouse gas emissions, there is a need for adaptations and mitigations to climate change. Not only is a drastic reduction of emissions necessary, but the uptake of CO2 from the atmosphere needs to be increased and stored long-term. One of the more efficient mitigation strategies to reduce CO2 concentrations in th
The Arctic heath tundra ecosystem is undergoing rapid transformations driven by climate change, which particularly affects snow accumulation and the length of the growing season. In this study, I examined the influence of snow depth on parameters such as water content, soil temperature, microbial activity, and nutrient availability and investigated their implications for plant water availability a
Deforestation monitoring is of significant importance for the ecosystem, climate change,and policy-making. The availability of optical and synthetic aperture radar (SAR) satellite remote sensing images, along with the development of time series change detection methods, has contributed to the increasing popularity of time series analysis in forest disturbance monitoring. However, there are few stu
Freshwater systems are active components of the global carbon cycle and contribute to global CO2 emissions. Freshwater studies in the Arctic are underrepresented, especially regarding lakes and their Dissolved Organic Carbon (DOC) reactivity and composition dynamics. DOC is a main part of DOM (dissolved organic matter), which drives processes central to carbon cycling, influences chemical and biol
The accumulation of carbon (C) within boreal forest biomass is an important component of the global carbon cycle. Whilst it is understood that old forests contain a large carbon stock, the continued sequestration of carbon in these forests is debated. Swedish forests today are intensively managed as even-aged monocultures with short rotation times and have historically been managed through selecti
With an increase in temperature (T) and a change in precipitation (P) patterns due to climate change, global conditions for tree growth are changing and shifting. While some areas experience an increase in P, favoring tree growth, many regions are also predicted to show a decrease in P, leading to trends of desertification. This study examines the projected climate change in Nigeria, located in Su
Surface soil moisture (SM) is a crucial variable representing the water content in soil at the topmost soil layer. Accurate data of SM are essential for many applications such as drought monitoring, vegetation modelling, weather forecasting, and agriculture management. Over the past decades, microwave remote sensing has been employed to estimate SM at large scales, with the Sentinel-1 satellite mi
Leaf Area Index (LAI) is quantity representing the amount of foliage in the canopy, which makes it an important parameter for analysing terrestrial ecosystems. Traditional methods of measuring LAI were done by analysing hemispherical photographs by hand and were very time consuming, requiring specific weather conditions (Jonckheere et al. 2004). Modern methods, including remote sensing, have much
The increasing availability of satellite images with seemingly ever increasing spatial, spectral, and temporal resolution is a treasure when searching for information about activity on the surface of the earth. However, the large amount of data is challenging for humans to search through. Anomaly detection in time series of satellite images could potentially help humans to search specific areas fo
In the face of global challenges such as regional conflicts, climate change and economic recession, the emergence of the Covid-19 pandemic added a unique dimension to the complex landscape that governments had to navigate. Unlike other challenges, the pandemic's solution was theoretically straightforward – the only way to stop it was mass vaccination. However, the issue of vaccine hesitancy by
