References
- Barnes , D.L. 1979 . “ Management strategies for the utilization of Southern African savannas ” . In Dynamic changes in Savanna Ecosystems , Pretoria : CSIR . (Unpublished manuscript)
- Bate , G.C. 1979 . “ Nitrogen in Southern Africa savannas ” . In Dynamic changes in Savanna Ecosystems , Pretoria : CSIR . (Unpublished manuscript).
- Bosch , O.J.H. and Van Wyk , J.J.P. 1970 . The influence of Bush‐veld trees on the productivity of . Panicum maximum. Proc. Grassld. Soc. sth. Afr. , 5 : 69 – 74 .
- Clary , W.P. 1969 . Increasing sampling precision for some herbage variable, through knowledge of the timber over‐story . J. Range Mgmt. , 22 : 200 – 201 .
- Donaldson , C.H. 1969 . Bush encroachment with special reference to the Blackthorn problem of the Malopo area , Pretoria : Dept. Agric. Tech. Serv. .
- Donaldson , C.H. and Kelk , D.M. 1970 . An investigation of the veld problems of the Malopo area. 1. Early findings . Proc. Grassld. Soc. sth. Afr. , 5 : 50 – 57 .
- Ford , E.D. and Newbould , P.J. 1977 . The biomass and production of ground vegetation and its relation to tree cover through a deciduous woodland cycle . J. Ecol. , 65 : 201 – 121 .
- Grunow , J.O. 1977 . Determination of above ground standing crop and litter mass, productivity and losses, in the grass layer under grazing conditions , Report to the National Programme for Environmental Science 46 Pretoria : CSIR . pp., typescript
- Harmse , H.I. van M. 1977 . Grondsoorte van die Nylsvley‐natuureservaat . South African National Scientific Programmes Report , 3 : 1 – 27 .
- Kelly , R.D. 1977 . The significance of the woody component of semi‐arid savanna vegetation in relation to meat production . Proc. Grassld Soc. sth. Afr. , 12 : 105 – 108 .
- Rutherford , M.C. 1978 . “ Primary production ecology in southern Africa ” . In Biogeography and ecology of southern Africa , Edited by: Werger , M.J.A. The Hague : Dr. W. Junk b.v. .
- Singh , J.S. , Lauenroth , W.K. and Steinhorst , R.K. 1975 . Review and assessment of various techniques for estimating net aerial primary production in grassland from harvest data . Bot. Review , 41 : 181 – 232 .
- Van der Schjjff , H.P. 1964 . ‘n Hervaluasie van die probleem van bosindringing in Suid‐'Afrika . Tydskrif Natuurweek , 4 : 67 – 80 .
- Walker , J. , Moore , R.M. and Robertson , J.A. 1972 . Herbage response to tree and shrub thinning in Eucalyptus populnea shrub woodlands . Austr. J. Agric. Res. , 23 : 403 – 410 .
- West , O. 1965 . Fire in vegetation and its use in pasture management with special reference to tropical and subtropical Africa , Commonwealth Bureau of Pastures and Field Crops, Mimeographed Publication No. 1/1965 53