Studies on vegetation and insect predation of eucalypts in forest and woodland at Ridgeway, Tasmania

TL;DRAbstract

Studies on vegetation and insect predation were conducted during the period 1982-84 at the Ridgeway Park Reserve, Tasmania. The vegetation of the area is eucalypt forest and woodland which varies in composition, dominance and structure. Soil type, topography, the level of grazing and incidence of fire also vary within the study area. The influence of soil type on moisture availability was investigated by comparing the vegetation on sites receiving the same incident solar radiation. The majority of species experience a shift in distribution over the three soil types such that with increasing radiation the species reach their peak frequency first on the brown earth, then on the podzolic soil and finally on the podsol. This pattern conformed to a model of moisture availability devised for the three soils. Species that did not conform to the model were either particularly vulnerable to the effects of grazing or fire, opportunists or restricted to one or other of the three soil types and he

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