Silvicultural research for sustained wood production and biosphere conservation in the pine plantations and native eucalypt forests of south-eastern Australia

Changes in total carbon and nutrients in soil profiles and accumulation in biomass after a 30-year rotation of Pinus radiata on podzolized sands: Impacts of intensive harvesting on soil resources

“…It was shown that retention rather than burning residues after harvesting improved survival and early growth of radiata pine on low and high quality sites in response to greater availability of soil moisture and nutrients in particular nitrogen (Squire et al, 1979). Volume growth to age 5, 10 and 20 years was maintained on the high quality site and improved significantly on the low quality site (Squire et al, 1985(Squire et al, , 1991(Squire et al, , 1996. Results presented here include growth measured at age 30 prior to clear-felling.…”

“…Height and diameter were measured frequently to age 5 and again at 10 and 20 years and volume growth during 1R and 2R was compared in detail at each stage of stand development (Squire et al, 1979(Squire et al, , 1985(Squire et al, , 1991(Squire et al, , 1996.…”

Designing old forest for the future: Old trees as habitat for birds in forests of Mountain Ash Eucalyptus regnans

“…Spouts are rapidly lost from dead trees, and Striated Pardalotes were associated with live old trees in this study ( Table 2). The models suggest that Striated Pardalotes would benefit from strategies to disperse old trees among regrowth, but there are immense practical difficulties in keeping retained trees alive after logging, as many are killed during regeneration burns (Squire et al, 1991;Flint and Fagg, 2007). Hence aggregated retention may be the most practical strategy to maintain habitat for the species in these forests, and indeed its current distribution is strongly associated with old patches of forest that survived the 1939 fires and subsequent logging.…”

“…The present study suggests that the spatial pattern of stands with many or few of these old trees and replacement old trees is less important than the absolute number of old trees, in terms of habitat for diurnal birds, and the crucial need is to keep as many old trees alive as possible. As hot regeneration burns are often used in ash forests (Squire et al, 1991;Flint and Fagg, 2007), it may be more practical to keep retained trees alive when they are clumped or included in systems of retained forest, than when they are scattered through regrowth. However, the special requirements of other species (notably Leadbeater's Possum, which benefits from scattered trees) need to be considered in selecting the mix of strategies to be used.…”

The conservation of arboreal marsupials in the montane ash forests of the central highlands of Victoria, south-eastern Australia — VII. Modelling the persistence of Leadbeater's possum in response to modified timber harvesting practices

“…Rawlinson & Brown, 1980;Smith & Lindenmayer, 1988Gruen et al, 1989). Indeed, a major focus of Victorian Government research has been an examination of the environmental impacts of clearfelling and an assessment of alternative forestry practices (Squire, 1987;Squire et al, 1991b). Our analyses focused on simulating the retention of 10, 20, 40 and 100% of the forest within a logging coupe and predicting the impacts of such actions on the persistence of populations of G. leadbeateri in the Murrindindi and Steavenson Forest Blocks.…”