Establishment and Development of Regeneration in Spotted Gum—ironbark Forests

Henry, N. B.; Florence, R. G.

doi:10.1080/00049158.1966.10675428

Cited by 21 publications

(17 citation statements)

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“…3). The suppressive effect of eucalypt overwood has been documented by Henry & Florence (1966), Opie (1968), Gill & Ashton (1971), Incoll (1979), Rotheram (1983), and Bowman & Kirkpatrick (1985b) and in the case of E. delegatensis" R.T. Baker was shown to be related to moisture competition (Bowman & Kirkpatrick, 1985c). Similarly, the pattern of seedling and advance growth size classes was also significantly clumped in all quadrats other than the 27 × 27 m quadrat from the structural group C (Fig.…”

Section: Resultsmentioning

confidence: 68%

“…The seedlings form a pool of fire resistant lignotuberous stunted saplings or 'advance growth'. The recruitment of these plants into the stand requires the formation of a gap that frees the saplings from the suppressive influence of the overwood (Zimmer, 1940;van Noort, 1960;Henry & Florence, 1966;Parsons, 1968;Curtin & King, 1979;Incoll, 1979;Rotheram, 1983;Bowman & Kirkpatrick, 1985b). Such gaps occur in nature following the repeated basal attrition by fire that results in stem failure (Bowman & Kirkpatrick, 1985a).…”

Section: Introductionmentioning

confidence: 99%

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Stand characteristics, understorey associates and environmental correlates ofEucalyptus tetrodonta F. Muell. forests on Gunn Point, northern Australia

Bowman

1986

Vegetatio

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An ordination study of 20 Eucalyptus tetrodonta forest stands growing on deep earths in monsoonal Australia revealed two major gradients in understorey vegetation type. The first axis reflected both floristic and structural understorey variation, where litter and shrub cover were inversely related to grass cover. This axis is thought to reflect a complex fire-vegetation type interaction, where vegetation is primarily determined by the saturation of the soil profile in the wet season, as measured by the colour of the iron rich soils. On the second axis of the ordination, floristic composition but not vegetation structure, and stand height were found to vary with the intercorrelated measures of soil gravel and moisture supply. E. tetrodonta is able to regenerate in the absence of fire, but firing appears to stimulate regeneration. All stands contained some advance growth, which occurs in distinct clumps, probably reflecting these plants clonal origin. Sapling presence in the stands is variable and the recruitment of advance growth into this size class appears to be related to overwood competition. The size class distribution of trees was found to be similar amongst the stands, therefore stand structure appeared to be independent of understorey type. In comparison to general models of temperate eucalypt regeneration processes the tropical eucalypts have evolved different regeneration strategies, possibly in response to the severe annual drought.

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Section: Resultsmentioning

confidence: 68%

Section: Introductionmentioning

confidence: 99%

Stand characteristics, understorey associates and environmental correlates ofEucalyptus tetrodonta F. Muell. forests on Gunn Point, northern Australia

Bowman

1986

Vegetatio

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“…Regrowth growth suppression in the presence of overwood has been demonstrated in a range of eucalypt forest types: E. macu/ata (Henry and Florence 1966), E. camaldu/ensis (Opie 1968), E. sieberi (Incoll1979), E. sideroxylon (Kellas eta/. 1982), E. de/egatensis (Bowman and Kirkpatrick 1986) and E. obliqua (Kellas eta/.…”

Section: Discussionmentioning

confidence: 97%

Effect of shelterwoods on stocking and growth of regeneration in dry high altitudeEucalyptus delegatensisforests

Battaglia

Wilson

1990

Australian Forestry

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Partial logging was introduced to Eucalyptus delegatensis forests at altitudes over 600 m to reduce the incidence of high altitude growth check. Subsequently it has been used for a number of other management reasons. Experiments showed that whilst the initial stocking of regeneration increased with basal area of stems retained, later aged stocking and growth of regeneration could be severely depressed by the retention of basal area in excess of 12m' ha-•. Where shelterwoods are prescribed, the optimum level of basal area that should be retained will vary according to the annual rainfall of the site, but in general basal area should be reduced to the lowest level capable of providing the requisite protection and ensure full stocking. This figure can be expected to vary between 12 and 16 m'ha-•. These results have been incorporated into operational prescriptions for this forest type.

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“…which survives a fire. The poor recovery of fire-damaged E. delegatensis seedlings and saplings is in marked contrast to that of lignotuberous eucalypts (Harris 1956;Henry 1961;Henry and Florence 1966;White 1971;Purdie and Slatyer 1976;Schuster 1980;Noble 1984). Even the non-lignotuberous E. pilularis is more fire resistant than E. delegatensis.…”

Section: Canopy Treatmentmentioning

confidence: 96%

Establishment, Suppression and Growth of Eucalyptus delegatensis R.T. Baker in Multiaged Forests. I. The Effects of Fire on Mortality and Seedling Establishment

Bowman¹,

Kirkpatrick²

1986

Aust. J. Bot.

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In the dry, multiaged eucalypt forests of central Tasmania the establishment of seedlings of Eucalyptus delegatensis requires a mitigation of the competition provided by the understorey, regeneration being observed to follow both fire and cultivation. Most of the adult trees of E. delegatensis survive even severe fires, although there can be considerable later mortality associated with mechanical failure of the base of the trunk. E. delegatensis dry forest usually has a distinctive sapling layer. Fire kills most of these saplings, the mortality rate being inversely related to their height and bark thickness.

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Establishment and Development of Regeneration in Spotted Gum—ironbark Forests

Cited by 21 publications

References 1 publication

Stand characteristics, understorey associates and environmental correlates ofEucalyptus tetrodonta F. Muell. forests on Gunn Point, northern Australia

Stand characteristics, understorey associates and environmental correlates ofEucalyptus tetrodonta F. Muell. forests on Gunn Point, northern Australia

Effect of shelterwoods on stocking and growth of regeneration in dry high altitudeEucalyptus delegatensisforests

Establishment, Suppression and Growth of Eucalyptus delegatensis R.T. Baker in Multiaged Forests. I. The Effects of Fire on Mortality and Seedling Establishment

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