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Lohmann, D. 2012. Sustainable management of semi-arid African savannas under environmental and political change. Ph.D. Thesis. Mathematisch-Naturwissenschaftlichen Fakultät der Universität Potsdam


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Sustainable management of semi-arid African savannas under environmental and political change.

Summary / Notes:

Drylands cover about 40% of the earth's land surface and provide the basis for the livelihoods of 38% of the global human population. Worldwide, these ecosystems are prone to heavy degradation. Increasing levels of dryland degradation result a strong decline of ecosystem services such as the recharge of groundwater resources, the protection of soils from erosion or the provision of grass biomass. In addition, in highly variable semi-arid environments changing future environmental conditions will potentially have severe consequences for productivity and ecosystem dynamics. Hence, global efforts have to be made to understand the particular causes and consequences of dryland degradation and to promote sustainable management options for semi-arid and arid ecosystems in a changing world. In my thesis I particularly address the problem of semi-arid savanna degradation which mostly occurs in form of woody plant encroachment. At this, I aim at finding viable sustainable management strategies and improving the general understanding of semi-arid savanna vegetation dynamics under conditions of extensive livestock production. Moreover, the influence of external forces, i.e. environmental change and land reform, onrnthe use of savanna vegetation and on the ecosystem response to this land use is assessed. Based on this I identify conditions and strategies that facilitate a sustainable use of semiaridrnsavanna rangelands in a changing world.

Year: 2012

Type: Thesis

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