The occurrence of mixed stands of the Eucalyptus subgenera Monocalyptus and Symphyomyrtus in south‐eastern Tasmania

Abstract

Mixed stands of eucalypts were examined on several sites in south-eastern Tasmania. Species from the subgenus Monocalyptus (E. puchella and E. obliqua) became dominant over species from the subgenus Symphyomyrtus (E. viminalis and E. globulus) as the age of the stand increased. In glasshouse trials, Symphyomyrtus species were initially at an advantage since they were more opportunistic than Monocalyptus species owing to their more rapid and even germination and higher initial growth rates. In addition, the Monocalyptus species E. pulchella showed a greater tendency to regenerate vegetatively than the Symphyomyrtus species E. viminalis arui E. ovata.

Targeted metabolite profiling provides a functional link among eucalypt taxonomy, physiology and evolution

“…Alternative attempts to delineate taxonomic groups of the Eucalyptus genus based upon chemical and biochemical physiology have encompassed initial growth rates (Duff et al, 1983), foliar nutrient concentrations (Lambert and Turner, 1983), volatile leaf oils (Li et al, 1995(Li et al, , 1996, respiratory metabolism (Anekonda et al, 1999) and combinations of these parameters (Noble, 1989). Despite extensive efforts (see, for example, the more than 20 papers on links between essential oils and eucalypt taxonomy by Dunlop et al (1999), Li et al (1995Li et al ( , 1996 and co-workers), these studies have failed to identify chemical or biochemical characteristics of eucalypt tissue that adequately explain species adaptation to stressful environments.…”

Cyclitols and carbohydrates in leaves and roots of 13 Eucalyptus species suggest contrasting physiological responses to water deficit

“…Several authors have attempted to delineate Eucalyptus species based on initial growth rates (Davidson & Reid 1980;Duff, Reid & Jackson 1983), foliar nutrient concentrations (Lambert & Turner 1983), volatile leaf oils (Li, Madden & Potts 1995, 1996 and respiratory metabolism (Anekonda et al 1999) and combinations of these parameters (Noble 1989). It is likely, however, that the geographical distribution of Eucalyptus species is dependent on a variety of these factors, but particularly related to the availability of water (Adams 1996).…”

Growth rate and basal area response curves of four Eucalyptus species on Mt. Wellington, Tasmania

“…E. delegatensis and E. coccifera belong to the informal subgenus Monocalyptus, while E. urnigera belongs to the informal subgenus Symphyomyrtus (Pryor & Johnson 1971). Some Symphyomyrtus species have a faster initial growth rate than Monocalyptus species (Duff et al 1983).…”