Mw. N. Hagenah: Among rodents and rhinos in a South African savanna

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31 May 2006 16:00
Unit: Wageningen University
Location: Aula, building 362, Gen. Foulkesweg 1, Wageningen
Organisation: Wageningen University
Promotor: prof.dr. H.H.T. Prins (Resource ecology)
Co Promotor: prof.dr. H. Olff (RUG) 2nd promotor

 The effect of humans on nature over the past centuries has caused the largest species loss since the extinction of the dinosaurs. In order to protect and restore the high species diversity of African savannas it is necessary to understand the determinants of their community interactions. This study explores the ecological importance of the interplay between mice with larger herbivores (e.g., rhino, buffalo and zebra) and both rainfall conditions and fire events for the maintenance of a South African savanna ecosystem. The study shows that large herbivores influence mice mainly through grass cover modifications rather than through interactions for food. Additionally, by changing the grass cover large herbivores also may have an impact on the establishment of trees. Furthermore, evidence is provided that herbivores, in interaction with rainfall and fire, strongly modify African savannas. Finally the study presents some implications for the conservation of African savannas for future generations.

Thesis: Among rodents and rhinos: Interplay between small mammals and large herbivores in a South African savanna.
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