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Browsing by Author "Frost, PGH"

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  • Siegfried, WR; Frost, PGH; Cooper, J; Kemp, AC (National Scientific Programmes Unit: CSIR, 1976-06)
    Data sheets are provided on 101 South African bird species thought to be eligible for conservation attention. A list is also provided of 35 species which might qualify for inclusion in a revised South African Red Data Book.
  • Roy, DP; Frost, PGH; Justice, CO; Landmann, T; Le Roux, JL; Gumbo, K; Makungwa, S; Dunham, K; Du Toit, R; Mhwandagara, K; Zacarias, A; Tacheba, B; Dube, OP; Pereira, JMC; Mushove, P; Morisette, JT; Vannan, SKS; Davies, D (Taylor & Francis Ltd, 2005-10-10)
    The development of appropriate validation techniques is critical to assess uncertainties associated with satellite-data-based products, to identify needed product improvements and to allow products to be used appropriately. ...
  • Scholes, RJ; Dowty, PR; Caylor, K; Parsons, DAB; Frost, PGH; Shugart, HH (Opulus Press Uppsala, 2002-06)
    The Kalahari sand sheet occupies 2.5 million ha in southern Africa. It is an area with relatively similar deep Aeolian soils, and a strong south to north gradient in rainfall, from 200 to 1000 mm mean annual precipitation ...