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dc.contributor.author Nsinamwa, M.
dc.contributor.author Sebego, R.J.
dc.date.accessioned 2009-05-14T13:16:10Z
dc.date.available 2009-05-14T13:16:10Z
dc.date.issued 2007
dc.identifier.citation Nsinamwa, M. (2007) Seed-bank analysis for herbaceous species along grazing gradients in the Sandveld and Hardveld grazing areas of Botswana, Botswana Journal of Agriculture and applied Sciences, Vol. 3. Number 1, pp. 55-66 en
dc.identifier.issn 18155574
dc.identifier.uri http://hdl.handle.net/10311/313
dc.description.abstract Grasses and forbs in Southern Africa have been understudied in terms of species richness and factor that affect diversity patterns. To gain a better understanding of factors affecting patterns of herbaceous plant species seedbank around water points, six boreholes ( three in each land zone) were randomly selected for sampling. Top soil layers of 20cm depth were sampled from six boreholes at distances of 50, 100, 200, 400, 800, 1500, and 3000m ( the Piosphere approach) in fenced and unfenced plots to determine the density and composition of the seedbank. The samples were allowed to germinate in the growth tray (10 x 15 x 8cm³) under controlled conditions (temperature, moisture) in a green house followed by daily counting of seedlings. Herbaceous plant species diversity was analyzed by using Simpson's diversity index. Analysis of varience on herbaceous species diversity was determined using the SAS software. Herbaceous plant community clustering was determined by using TWINSPAN, a FORTRAN programme. Significant (p=0.0001) germination variants were observed along the distance from livestock watering points. Most grass seedlings recorded germinated from soil samples obtained from from fenced plots, while less than 40% of the forb seedlings were. Most of the forbs species were recorded within 400m from the water points and that soils closer to water points also contained grass seeds despite the level of degradation and /or trampling. en
dc.language.iso en en
dc.publisher Botswana College of Agriculture, http://www.bca.bw/Research/bojaasBca/InstructionToAuthors.htm en
dc.subject Seedbank en
dc.subject Grazing gradient en
dc.subject Herbaceous species en
dc.subject Botswana en
dc.title Seed-bank analysis for herbaceous species along grazing gradients in the Sandveld and Hardveld grazing areas of Botswana en
dc.type Published Article en


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