Naturwissenschaften, Mathematik und Informatik
Recent Submissions
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Effects of environmental change on grassland birds in the Central-Asian flyway through the annual cycle
(2025-05-20)Land use change is a significant driver of biodiversity loss, but its impacts have been largely studied with a particular focus on temperate regions and forest ecosystems. In this thesis, I used bird abundance, occurrence, ... -
Investigation of Nuclear Hyperfine Coupling in H2 Heterodimers Using Rotational Spectroscopy
(2025-05-20)Rotational spectroscopy of gas phase compounds is a powerful technique for structure determination through the unique moments of inertia of a molecular system. It is sensitive angular momentum coupling; therefore, complicated ... -
Synthesis of Artificial Nucleotides for Biological Applications
(2025-05-20)This thesis explores the synthesis of nucleotides, the building blocks of DNA and RNA, two essential molecules in living cells. One project focused on developing a more effective ligand for orotidine-5’-monophosphate ... -
Responses of bird and moth communities to forest disturbance and associated management in Central European forests
(2025-05-20)Forest disturbances – such as windthrow, bark beetle and wildfire – play a key role in shaping forest ecosystems by altering forest structure, ecosystem processes and biodiversity. Central European forests are currently ... -
Development of an optimization framework for complex breeding programs based on the Modular Breeding Program Simulator (MoBPS)
(2025-05-16)The aim of this thesis is to develop an optimization framework for complex breeding programs that involve numerous input parameters, auxiliary constraints, and stochastic outputs. Chapter 1 introduces the topic of stochastic ... -
Simulation-Based Data Fusion and Tracking
(2025-05-15)Autonomous systems ranging from self-driving cars and driver assistance systems, over autonomous vacuum cleaners to unmanned aerial vehicles rely on accurate perception of their surroundings to navigate and interact with ... -
The significance of chlorophyllous spores in the evolution and biogeography of ferns
(2025-05-15)Ferns, the second most diverse group of vascular plants globally, have evolved over millions of years colonizing diverse habitats across almost all continents. Ferns possess a suit of morphological and physiological traits ... -
Organic matter preservation in the presence of variable mineralogical matrices – clues to the interpretation of Precambrian biosignatures
(2025-05-09)Hydrothermal environments, such as terrestrial hot spring settings, harbored life on the early Earth. However, the scarcity of Precambrian rocks, particularly hydrothermal deposits, hinders the reconstruction of the ... -
Land Use Change in Papua, Indonesia – Assessing Deforestation Patterns and Predicting Future Hotspots of Habitat Loss to Inform Spatial Conservation Planning
(2025-05-08)New Guinea, the world’s largest tropical island, harbors some of the most biologically diverse and unique ecosystems. Despite its global ecological significance and endemic biodiversity, the region remains one of the most ... -
Tree functional traits driving nitrogen cycling in pure and mixed stands of Douglas fir and European beech
(2025-05-07)Forests globally are faced with climate change-induced challenges, necessitating adaptive silvicultural strategies to prevent the decline of ecosystem functions and loss of ecosystem services. In temperate Europe, forest ... -
Operando and Ultrafast Electron Microscopy of Structural Phase Transformations
(2025-05-05)Structural phase transformations promise tailored functionality in future technological devices that complement already established applications. In leveraging the associated changes of macroscopic properties, reversible, ... -
Communication of Colletotrichum graminicola in development and pathogenic maize interactions
(2025-05-05)Colletotrichum graminicola is a filamentous ascomycete that infects Zea mays and reduces the annual yield by 10-20 % worldwide. The fungus produces two asexual spore types, oval and falcate-shaped conidia of which the ... -
The Minimal Hypersurface Method to Obstruct Positive Scalar Curvature via the Classification of 3-Manifolds
(2025-05-05)In 1979, Schoen and Yau developed a method using descending chains of minimal hypersurfaces to obstruct psc for manifolds initially up to dimension 7. Recent results on regularity for minimal hypersurfaces extend the ... -
Transient Triplet Metallopnictinidenes
(2025-04-30)Nitrenes (N–R) are subvalent key intermediates in organic synthesis and have been extensively studied. The heavier pnictinidene analogues have also attracted great interest, but comprehensive investigations that systematically ... -
Final Steps Towards Production of the ITk Pixel Detector for the ATLAS High Luminosity Upgrade
(2025-04-28)The Large Hadron Collider (LHC) upgrade to the High-Luminosity LHC (HL-LHC) will bring an unprecedentedly challenging environment to the detectors, with an instantaneous luminosity of $5\times10^{34}\,\rm cm^{-2}s^{-1}$, ... -
Sustainable Agri-Food Systems: Climate Change, Food Prices, and Macroeconomic Dynamics
(2025-04-24)Agri-food systems are integral to achieving at least 12 of the 17 Sustainable Development Goals (SDGs). Nevertheless, agri-food systems are both a victim of and contributor to climate change. A comprehensive understanding ... -
Terrestrial Carbon Dynamics under Land Use Transformation in Jambi, Indonesia
(2025-04-23)Tropical forests in Indonesia are rapidly being converted into agricultural systems, particularly oil palm and rubber plantations. These transformations significantly alter carbon dynamics, leading to substantial losses ... -
Untersuchung von Indikatoren zur Einschätzung des Risikos einer Subakuten Pansenazidose bei Milchkühen auf Praxisbetrieben
(2025-04-23)Feeding of high-yielding dairy cows in the beginning of lactation is a major challenge due to high energy requirements and reduced dry matter intake at the same time. This leads to diets with a high level of rapidly ... -
Evolution of polyploidy and apomixis in the pantropically distributed and species-rich genus Zanthoxylum (Rutaceae)
(2025-04-22)The proto-Rutaceae group includes genera with significant economic and evolutionary importance, yet their phylogenetic relationships and evolutionary mechanisms remain incompletely understood. This thesis focuses on the ... -
Understanding the Effective Number of Independent Chromosome Segments as a Tuning Parameter for Genomic Prediction
(2025-04-16)The effective number of independently segregating chromosome segments (𝑀𝑒) is a key parameter in animal selection. Its relevance lies within the methods to obtain the accuracy of genomic prediction. However, there is ...