Filtyp
The fishing industry is vital for global food security, providing nutrient-rich food, supporting livelihoods, and contributing to economic growth. As the global population continues to grow, it is essential to approach fishing in a sustainable way and preserve marine ecosystems. The United Nations has recognized overfishing as a significant issue. For 2017, it was estimated that about 34% of fish
Seagrasses provide valuable ecosystem services, benefitting both marine species and humans by providing coastal protection and erosion control which is significant as 898 million people lived in low-elevation coastal zones in 2020. However, seagrasses worldwide have been declining and in Sweden, the eelgrass Zostera marina has decreased heavily since 1980. One cause for seagrass loss in temperate
E-scooter sharing systems (ESS) have rapidly gained popularity since their introduction in the U.S. in 2017, promoting sustainable urban mobility and offering a new solution to transport systems challenges. However, research on ESS usage in relation to the built environment, particularly in European contexts, is limited, and comparative studies between urban areas of different sizes are not readil
Kanari Domna Mining geosocial data from Flickr to explore tourism patterns: The case study of Athens Social media are providing a new type of geo-tagged data that by processing them, new types of knowledge can be generated and used by decision-makers in different areas including tourism. It includes e.g., identifying touristic areas that are not prioritized or advertised by touristic authorities
With climate change, the frequency in climate extremes such as drought, heavy rainfalls, and extreme temperatures is predicted to increase. These extremes can potentially stress and damage vegetation over large areas, leading to altered carbon cycle, vegetation greenness, albedo, and shifted species composition. This study focuses on two different types of extreme events; frost drought caused by w
Climate change-induced thawing of permafrost mobilizes previously frozen carbon of high potential reactivity, thereby, fuelling microbiological production of greenhouse gases. For this work, an analysis of the quantity, quality, and bioreactivity of DOC in streams from the Stordalen discontinuous permafrost catchment was carried out with stream water samples during the relatively warm summer of 20
Solar energy is an important component of sustainable urban development. However, it is still not reaching its full potential due to several reasons. One of them is a lack of free tools based on open geodata capable of estimating solar energy (daylight) metrics on building features, e.g.,windows, in the early stages of the urban planning process. To fill this gap, a design and implementation of th
Degradation of the hydrological regime is a pressing issue in the Ethiopian Highlands. It is one of the most rapidly degrading landscapes due to its topography and large amounts of annual precipitation. This problem has been exacerbated through anthropogenic influence from land use/land cover (LULC) and climate change. This paper presents the effect on the hydrological cycle caused by these change
Eutrophication is one of the biggest threats to aquatic ecosystems. As nutrient load increases in marine environments in the Öresund and Baltic Sea and dead zones grow, Swedish municipalities further their efforts in limiting the amount of nutrients delivered into those environments. Since the majority of nutrients enter aquatic systems through surface flow as a result of nutrient leakage, a relia
During the last years, virtual 3D city models have been widely used in application fields such as urban planning, environment simulations, and disaster management. With the development of high-rise buildings and the increasing densely built-up areas, an increasing number of authorities and companies have shown interest in integrating 3D city models with the cadastre. This is because on one hand, t
The European spruce bark beetle is considered as one of the most destructive forest insects to Norway spruce trees in Europe. Climate change may increase the frequency and intensity of bark beetle outbreaks. It is therefore of vital importance to detect the bark beetle outbreaks and take it under control to prevent further damages. Remote sensing techniques may provide a cost-efficient solution to
Given the current societal and political developments in Germany, the visibility and integration of-marginalized is essential to ensure their inclusion in mainstream society. One way of encouraging-contact between majority and marginalized groups is through building social networks, of which-informal and nonformal educational activities play an important part. This thesis examines the-experience o
Approximately 80% of agricultural land in the world is comprised of annual crops which have a life span of only one year. Research has shown that these crops are unsustainable because of these short life spans. Soil erosion, nutrient leaching, and losses of soil carbon are just a few problems caused by annual monocultures. Additionally, with the changing climate, these cropping methods are both vu
Forest ecosystems are important actors in climate change mitigation strategies through their abilities to act as both carbon sinks and sources. The commonly used forest management strategy of clearcutting has been suggested to be paired with large greenhouse gas emissions, increasing the need for research on the climate effect from alternative management strategies. Rumperöd forest is managed thro
Drainage of peatlands causes changes in water table (WT), vegetation and decomposer community. As a consequence, decomposition patterns and carbon dynamics change, which is visible in altered Dissolved Organic Carbon (DOC) concentrations in ground and soil water. Additional changes in precipitation patterns towards more extreme drought and rain periods, as expected with climate change, cause furth
Urban areas are increasingly facing heat stress which poses a significant health risk to growing populations. Land Surface Temperature (LST), as a strong indicator for urban temperature analysis, is substantially influenced by the composition of a city. Urban Green Spaces (UGS) and buildings are especially important in determining LST and therefore are strong factors in identifying potential urban
Accurate monitoring of dissolved organic carbon (DOC) in lakes is essential for understanding aquatic carbon dynamics, assessing lake ecosystem health, and supporting water resource management. While remote sensing offers scalable alternatives to in-situ monitoring, machine learning models often struggle to generalise across systems. This thesis investigates the potential of the eXtreme Gradient B
In an urbanizing world, challenged by climate change and rising temperatures, street vegetation can help mitigate urban temperatures. However, scaling the understanding of street vegetation’s cooling effects from local observations to the city level introduces challenges. While several studies have assessed the influence of street greenery on land surface temperature (LST) at the city scale using
Areas experiencing conflict are challenging to examine due to limited accessibility. Remote sensing is a valuable tool that can be used to evaluate the effects of conflict on the environment. Northwestern Syria hosts most of the country’s remaining Mediterranean forests, an ecosystem that is ecologically significant for regulatory ecosystem services. Since 2011, Syria has experienced conflict, whi
