“…One expects marked differences between disclimax grasslands in which annual species and short-lived perennials dominate compared with climax grasslands such as those dominated by species of the perennial grasses Astrebla, Triodia, Heteropogon and Themeda. The demographic information already available, for example in Williams & Roe (1975), Williams (1977), Crisp & Lange (1976), Crisp (1978), Michalk & Herbert (1978), Davies & Walsh (1979) for Australian species, and in Young & Evans (1974), Wright & Van Dyne (1976), 209 Norton (1978 and West et al (1979) for north American species can then be used to extrapolate to related communities. The review by Hodgkinson & Williams (1980) and in particular the field studies by Jones & Mott (1980) which elucidate the demographic picture for sown pasture species in new environments also indicate how other information can be incorporated.…”