3. PhD Theses
Recent Submissions
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Bio-waste composting in the framework of a circular economy
(Estonian University of Life Sciences, 2023)Organic wastes can be stabilized by composting and turned into solid organic fertilizers and soil improvers, while closing the cycle of nutrients. Evaluation of total nutrient concentrations, as well as safety and hygiene ... -
The impact of environmental disturbances on the gastrointestinal bacterial community and the viability of aquatic gastropods
(Estonian University of Life Sciences, 2022)The freshwater salinization caused by global climate change and anthropogenic activities has received increasing attention in recent decades. Coastal freshwater areas and inland water bodies are affected by agriculture, ... -
Combining unmanned aerial vehicles and a mesocosm experiment to unveil plant communities shifts under global change conditions in coastal meadows
(Estonian University of Life Sciences, 2022)Semi-natural grasslands are an essential part of the cultural landscape of Europe. Semi-natural grasslands are commonly characterised by a very high biodiversity, including rare species. Beyond the high biodiversity value, ... -
Alternative biocontrol strategies in the potato phytophthora infestans pathosystem for integrated management of late blight
(Estonian University of Life Sciences, 2022)Potato late blight caused by a fungus-like microorganism, Phytophthora infestans, has historically been one of the most tragic and devastating potato diseases, that can infect all aboveground and underground organs of ... -
Ornamental plant growth and development depending on soil conditions modified by organic additives
(Estonian University of Life Sciences, 2022)Modern plant production results in an intense use of natural resources and chemical inputs, with consequences on the environment. Peat is widely used for ornamental plant propagation and growth in container soilless media, ... -
Effects of cropping systems on soil fertility and winter wheat dough quality
(Estonian University of Life Sciences, 2022)The long - term effect of organic and mineral nitrogen fertilizers on soil fertility in five - field crop rotation and on the quality of winter wheat grain yield and dough was studied in the doctoral thesis. The aim was ... -
Unmanned aircraft systems and image analysis in yield estimation and agricultural management
(Estonian University of Life Sciences, 2022)This thesis aims to examine how machine learning (ML) technologies have aided significant advancements in image analysis in the area of precision agriculture. These multimodal computing technologies extend the use of machine ... -
Small mammals and the lesser spotted eagle in ecotones : a case study on predator-preyhabitat relationships in agricultural landscape
(Estonian University of Life Sciences, 2022)Nowadays, agriculture and other land uses have a crucial role in protecting different habitats and biodiversity. Forest/farmland edges are one source of biodiversity in agricultural landscapes. Trophic relationships have ... -
Urban ecology : novel ecosystems, novel challenges
(Estonian University of Life Sciences, 2022)The present thesis is the result of four years of PhD studies where various taxonomic groups were explored in terms of taxonomic and functional diversity in urban ecosystems at a broad scale. My research was conducted ... -
Mitigation of nitrous oxide emissions from arable soils
(Estonian University of Life Sciences, 2022)The need to reduce emissions of greenhouse gases responsible for global warming of the planet is generally acknowledged. Agriculture is the main anthropogenic source of non-CO2 emissions, which include N2O and CH4. ... -
Patterns of urban park use, spatial accessibility and preferences of urban park users in Tehran, Iran
(Estonian University of Life Sciences, 2022)Tehran, the capital of Iran, suffers from many social and environmental problems. The most important problem is poor urban planning, which led to massive sprawl. The amount of urban green or blue space, in particular parks, ... -
The impact of protected areas governance and management practices on human well-being and local socioeconomic conditions
(Estonian University of Life Sciences, 2022)Over the last 50 years the number and surface of protected areas (PAs) has explosively increased, covering now almost a fifth of earth terrestrial areas and nearly tenth of marine areas. In addition to biodiversity ... -
Stability of yield and baking quality of wheat in Baltic conditions
(Estonian University of Life Sciences, 2022)The aims of the current thesis were to describe the average yield and quality potential of spring and winter wheat in Estonia. It was hypothesized that it is possible to grow winter and spring wheat varieties with good and ... -
From microscopy to genes – tracing toxic cyanobacteria in a shallow eutrophic lake
(Estonian University of Life Sciences, 2022)Global warming paired with eutrophication processes is shifting phytoplankton communities towards the dominance of bloom-forming and potentially toxic cyanobacteria. Cyanobacterial blooms are considered an increasing threat ... -
Effects of abiotic stress on foliage photosynthetic characteristics and volatile organic compound emissions in tropical agricultural species
(Estonian University of Life Sciences, 2022)Plant species emit a wide varieties of biogenic volatile organic compounds (BVOCs) when they are stressed. Plant stressors can be either biotic such as pathogens, viruses and insect infestations or abiotic such as ozone, ... -
Mosquito (Diptera: Culicidae) diversity in the urban environment and countryside of Estonia
(Estonian University of Life Sciences, 2022)Mosquitoes are globally distributed insects that are familiar to most people. Thus far, 3 591 mosquito species have been described, but only a small number of these are medically important. Mosquitoes of both genders mainly ... -
Response of root fungal communities to fertilisation, crop species and cultivar
(Estonian University of Life Sciences, 2021)As the human population increases exponentially, intensification of agriculture is inevitable. Thus, there is an ongoing need for further research towards sustainable agriculture. Soil is a habitat with great microbial ... -
Effect of organic management methods on yield and quality of carrot and on weeds
(Eesti Maaülikool, 2021)The thesis covers two organic studies. The first one aimed to estimate organic carrot yield and quality in comparison of conventional production. Comparison of vegetable production systems has often provided inconsistent ... -
Pelagic calcite precipitation in lakes: from a global to a local perspective on its drivers and implications
(Eesti Maaülikool, 2021)Inland waters are relevant components of the global carbon cycle acting as active sites for biogeochemical processes. Lakes and reservoirs store and emit carbon in large quantities, comparable in magnitude to other major ... -
Hydrometeorological and climatic control over lake phytoplankton : the importance of time scales
(Eesti Maaülikool, 2021)Phytoplankton reflects changes in the environment and plays a vital role in biogeochemical cycles and the climate system. The thesis attempts to link the phytoplankton dynamics with the timing, intensity, and duration of ...
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