Zeidler, Juliane2019-02-132019-02-131999https://hdl.handle.net/10539/26386A thesis submitted to the Faculty of Science, University of the Witwatersrand, .Johannesburg, in fulfillment of the requirements for the degree of Doctor of Philosophy.An Index of Biological Integrity (IBI) has been developed for rangeland condition assessment in arid northwestern Namibia. The usefulness of termites as bio-indlcators has been tested and reliable sampling protocol for termite diversity in an arid ervlronrnent has been developed. The study was conducted mainly at a high- and low-intensity site on each of three farms. Two of the farms were communally owned; the other was commercially owned. (Abbreviation abstract)enRangelands -- Namibia.Land capability for agriculture -- Namibia.Soil microbiology -- Namibia.Soil profiles -- Namibia.Soils.Thesis