Large owl territories as a planning tool for vertebrate fauna conservation in the forests and woodlands of eastern Australia
-
Published:2004
David Milledge, 2004. "Large owl territories as a planning tool for vertebrate fauna conservation in the forests and woodlands of eastern Australia", Conservation of Australia's Forest Fauna, Daniel Lunney
Download citation file:
The spatial patterns of Sooty OwlTyto tenebricosa and Barking OwlNinox connivens records, obtained from large owl surveys in the Victorian Central Highlands and the Pilliga Scrub in New South Wales respectively, allow the suggestion to be made that these species select territories with particular sets of habitat attributes. Estimated Sooty and Barking Owl territories in the Mountain AshEucalyptus regnans forests of the Central Highlands and the cypress pineCallitris spp-ironbarkEucalyptus spp forests and woodlands of the Pilliga Scrub were concentrated in areas with abundant tree hollows and other old-growth attributes and less frequent fires. Higher soil nutrients and plant productivity also appeared to be important attributes in the Pilliga Scrub. Territories of the large owls in both survey areas contained most of the sites where the highest nocturnal bird and arboreal marsupial species richness and abundance were recorded, enabling the proposal to be advanced that Sooty and Barking Owls could serve as indicators of high quality habitat for a range of forest and woodlanddependent vertebrates. In particular, they appear able to function as indicators for hollow-dependent and other specialised species disadvantaged by disturbances such as intensive logging and frequent fire. Territories of these large owls form a pattern that provides a natural planning template ideal for mapbased reserve selection aimed at maximising biodiversity conservation in the forests and woodlands of eastern Australia.