We present a detailed case study of conservation and restoration of the Australian arboreal marsupial Leadbeater's Possum (Gymnobelideus leadbeateri) and its Mountain Ash forest habitat to illustrate the important intersection between forest restoration principles and the general principles for forest biodiversity conservation. Mountain Ash forests have been extensively modified through a century of intensive logging, recurrent wildfires and post-fire salvage logging. These disturbances have led to a reduction in old growth forest to 1/30th-1/60th of the extent of historical levels, a rapid collapse followed by a prolonged (≯30-year) shortage of populations of hollow-bearing trees throughout the Mountain Ash forests (which are critical habitat elements for many species of cavity-dependent vertebrates), and an increased risk of re-burning of landscapes dominated by young, regrowth forest. The consequences of the severe decline and consequent ‘temporary extinction’ of large old trees will be the potential global extinction of Leadbeater's Possum whose distribution is significantly associated with the number of large old trees. We outline the conservation and forest restoration principles and practices that are needed to address these problems. We discuss how general principles for forest restoration must be multi-faceted and multi-scaled by encompassing strategies ranging from retaining existing key residual elements of original natural forest cover (e.g. remaining populations of target species, key structures, habitats, and patches) through to restoring patterns of forest cover and key ecosystem processes. We also outline how forest restoration principles intersect strongly with similarly multi-faceted and multiscaled general principles for forest biodiversity conservation - in particular, those corresponding to conserving populations of particular species and their habitats, maintaining stand structural complexity, maintaining patterns of landscape heterogeneity, and perpetuating key ecosystem processes. Finally, we outline the potential for positive cumulative benefits of multiple restoration and conservation strategies by outlining how actions at one scale can create benefits at other (smaller or larger) scales.
Research-Article|
September 19 2013
Principles and practices for biodiversity conservation and restoration forestry: a 30 year case study on the Victorian montane ash forests and the critically endangered Leadbeater's Possum
David Lindenmayer;
David Lindenmayer
1
Fenner School of Environment and Society, The Australian National University, Canberra, ACT 0200, Australia
Search for other works by this author on:
David Blair;
David Blair
1
Fenner School of Environment and Society, The Australian National University, Canberra, ACT 0200, Australia
Search for other works by this author on:
Lachlan McBurney;
Lachlan McBurney
1
Fenner School of Environment and Society, The Australian National University, Canberra, ACT 0200, Australia
Search for other works by this author on:
Sam Banks;
Sam Banks
1
Fenner School of Environment and Society, The Australian National University, Canberra, ACT 0200, Australia
Search for other works by this author on:
John Stein;
John Stein
1
Fenner School of Environment and Society, The Australian National University, Canberra, ACT 0200, Australia
Search for other works by this author on:
Richard Hobbs;
Richard Hobbs
2
School of Plant Biology, The University of Western Australia, 35 Stirling Highway, Crawley, WA 6009, Australia
Search for other works by this author on:
Gene Likens;
Gene Likens
3
Cary Institute of Ecosystem Studies, Millbrook, New York 12545, USA
Search for other works by this author on:
Jerry Franklin
Jerry Franklin
4
School of Forest Resources, College of the Environment, University of Washington, Seattle, Washington 98195, USA
Search for other works by this author on:
Australian Zoologist (2013) 36 (4): 441–460.
Citation
David Lindenmayer, David Blair, Lachlan McBurney, Sam Banks, John Stein, Richard Hobbs, Gene Likens, Jerry Franklin; Principles and practices for biodiversity conservation and restoration forestry: a 30 year case study on the Victorian montane ash forests and the critically endangered Leadbeater's Possum. Australian Zoologist 1 January 2013; 36 (4): 441–460. doi: https://doi.org/10.7882/AZ.2013.007
Download citation file: