32 documents found

Dissertation

The hydrology of the Sudd : hydrologic investigation and evaluation of...

This dissertation describes the hydrology of the Sudd swamps in southern Sudan, comprising a hydrologic investigation and evaluation of its water balance. The study improves historical interpretations and unveils so far unknown conditions and interdependencies in the swamp and floodplain system, considering...
Dissertation

Impacts of land management on soil formation and soil degradation during...

The investigation of natural and human-induced soil degradation are important subjects in terrestrial ecosystem research. They involve several branches of the science. In order to study natural and human-induced soil degradation, it is necessary to use inter- and multidisciplinary approaches with respect...
Dissertation

Assessing potential impacts of multiple stressors on riverine phytoplankton...

Increasing pressures from both natural disturbance and anthropogenic activities challenge river ecosystem resilience. A better understanding of the ecological balancing of structure under multiple stressors is thus critical for sustainable future as well as human wellbeing. Phytoplankton are one of the...
Dissertation

Reconstruction of forest and land use history from the Neolithic to the...

This Dissertation focuses on the reconstruction of land use and forest history in the Westensee moraine region in Northern Germany. With a combination of palaeoecological investigations including archaeological and radiocarbon data, the main objective of this investigation was the identification of interactions...
Dissertation

Geomorphometric regularities of the spatial distribution of colluvial deposits

The general objective of the investigation is to examine the basic relationships between quantitative characteristics of the modern land surface and the distribution of colluvial deposits on a fine spatial resolution. A hypothesis on the dual system of the land surface memory was suggested. Two groups...
Dissertation

Past natural and anthropogenically altered sediment flux in the Spessart...

The Late Quaternary surface processes of a steep gully system in Central Europe occur mainly as multiple gully erosion and sedimentation cycles. These cycles depend largely on the relation between sediment supply and sediment transport capacity. The gully thalweg was aggraded during the Younger Dryas...
Dissertation

Landscape dynamics and sustainable land management in Southern Ethiopia

Landscapes have undergone unprecedented changes in Chencha and Arbaminch areas, Southern Ethiopia, during the last century. Yet there exist well-established land-use systems and a wealth of local experience in maintaining and managing landscapes. The major objective of the study is to explore the dynamics...
Dissertation

Anthropogene Nutzungen und deren Auswirkungen auf Seevögel in der Deutschen...

Im Hinblick auf die Intensivierung der anthropogenen Aktivitäten auf dem Meer bestand das Ziel dieser Arbeit darin, die Auswirkungen verschiedener Nutzungsformen auf Seevögel ergebnis- und methodenorientiert zu bewerten. Dabei wurden sowohl Auswirkungen auf das Nahrungssuchverhalten als auch auf die...
Dissertation

Habitat selection and foraging ecology of seabirds in the Gulf of St. Lawrence

The study focuses on at-sea distribution, habitat selection and foraging ecology of seabirds in a seabird hotspot, the Gulf of St. Lawrence. Analyses are based on standardized ship-based surveys with oceanographic sampling, and equipment of breeding birds with data loggers. The Northern Gannet as focal...
Dissertation

Investigating a seabird hotspot : factors influencing the distribution...

The southern Baltic Sea in northeastern Europe has been described as one of the most important areas for seabirds in the Western Palaearctic, based on extraordinary high numbers of birds occurring in the area particularly during the winter half-year. Most studies, however, only comprise information about...
Dissertation

Environmental behaviour of selected herbicides in a lowland catchment in...

In order to gain high production levels and product quality, pesticides are employed for the protection of plants and plant products. By their very nature, however, most pesticides create harmful risks to humans, animals and the environment. As an example for pesticide behaviour in lowland conditions,...
Dissertation

"An Assessment of Ecosystem Services of the Everest Region, Nepal"

Land use and land cover changes in the region were analyzed on the basis of information extracted from satellite image data. Based on this information, it is clearly noticed that the different land use classes have changed their forms and degrees in different time periods due to the driving forces such...
Dissertation

Die Verteilung des Aeroplanktons über Schleswig-Holstein

Für die Untersuchung wurden quantitativ arbeitende Aeroplanktonsammler (APS) an einem Flugzeug in Höhen zwischen 300 ft und 6000 ft (92 – 1830 m) eingesetzt. Es wurden zwei Fangproben aus zwei verschiedenen Höhen miteinander verglichen, wobei 500 ft (153 m) als Referenzhöhe galt. Die Dichte des Aeroplanktons...
Dissertation

Mittelalterlich-neuzeitliche Landschaftsentwicklung im Südsolling : die...

Im heute forstwirtschaftlich genutzten Südsolling(Niedersachsen) wurde die Entwicklung eines Dorfes während Mittelalter und Neuzeit im Rahmen eines interdisziplinären Forschungsprojektes rekonstruiert. Zur Untersuchung der mittelalterlichen Besiedlungsgeschichte und der Veränderung der Böden und Sedimente...
Dissertation

Geophysikalische Erfassung von Feuchte- und Substratheterogenitäten im...

(Keine Zusammenfassung in deutscher Sprache vorhanden.) (No summary in German language.)
Dissertation

Nutzungsbedingte Landschaftsveränderungen in Yangjuangou (Provinz Shaanxi,...

(Keine Zusammenfassung in deutscher Sprache hinterlegt.)
Dissertation

Auswirkungen der langfristigen Landnutzungsdynamik auf die Ökosysteme Südost-Polens

Ziel dieser Arbeit ist es, die langfristigen Auswirkungen der Landnutzungsdynamik auf die Ökosysteme in Südost-Polen zu untersuchen. Die Untersuchungsgebiete liegen westlich von Lublin im Landschaftsschutzpark Kazimierz Dolny an der Vistula/Weichsel und südlich von Lublin im Roztocze Höhenrücken. Die...
Dissertation

Late Holocene aeolian activity and landscape development in a northern...

The purpose of this thesis is to investigate and spatially reconstruct long-term aeolian landscape dynamics using a small inland dune system in Northern Germany as a case study. Against the background of the dune formation of the Kuhharder Hill dune (KHD), this thesis investigated the timing, causes,...
Dissertation

Landscape development and soil transformation in the former Viking settlement...

Geoarchives at former settlements contain valuable information about human-landscape interactions in the past. Due to the complex interplay of natural and anthropogenic processes, environmental conditions and human activities can be reconstructed based on the properties of the geoarchives. Abandoned...
Dissertation
Short version

Carbon dynamics resulting from paddy management under different climatic...

Study of soil carbon dynamics was performed to reveal the effect of crop management practices in combination with different environmental conditions, i.e. topography, hydrology, and climate condition, and to evaluate the 14C concentration and residence time of carbon in different organic matter and soil...