52 Z. Woldu, M.A. Mohammed Saleem Agriculture, Ecosystems and Environment 79 2000 43–52
5. Conclusions
This research has made it possible to obtain the temporal variations within the manure seed bank
and comparison of the data with those of the natural grassland. The role of livestock in grasslands may be
viewed as important agents in maintaining landscape and species diversity and this can be realized if efforts
are made to keep the stocking rate within the limits of the carrying capacity of the grazing areas. Further
study on carrying capacity of the natural grasslands, improved methods of producing more livestock feed
and detailed experiments on some important species in manure seed bank will complement the findings in
this research.
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