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Retention of native woody vegetation on farms in Australia: management considerations, planning guidelines and information gaps

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Abstract

Australia's forests and woodlands have been extensively cleared since European settlement. Cropping regions have the least retained native vegetation, with the greatest depletion of forests and woodlands being observed in Western Australia and South Australia. Salinisation, erosion and landslides have resulted from excessive clearing and inappropriate tree removal from particular units within the landscape. Major problems in cropping regions are the dramatic reduction in total woody cover and the fragmentation of retained vegetation into isolated remnant patches which tend to be very small (<10–15 ha). Those states with little remnant vegetation have legislation which restricts further clearing and the main emphasis is on managing remnant patches for conservation. For those states with a large proportion of woody vegetation uncleared, the main priority is to ensure that past mistakes are not repeated and that any vegetation clearance is based upon sound ecological principles.

Throughout Australia, the condition of the remaining vegetation is of great concern and management guidelines for both conservation and production are being sought. Clearing may lead directly to soil erosion, but often the cause of erosion is inappropriate post-clearing management. Overgrazing is a major cause of vegetation and soil degradation, particularly in semi-arid regions.

An understanding of the complex inter-relationship between woody vegetation, grazing and fire is necessary if 1) flora and fauna are to be conserved; 2) hydrological balance is to be maintained; and 3) rural industries are to remain viable. Planning at the catchment level is necessary to implement strategies to meet conservation and hydrological goals. Within that framework, individual property planning must include consideration of the area of native woody vegetation to be retained and its configuration. In many cases, the purpose of retention will influence the decisions of where and how native vegetation should be retained.

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Authors and Affiliations

  1. Department of Primary Industries, Charters Towers, QLD, Australia

    J. C. Scanlan

  2. Rural Industries Research and Development Corporation, Barton, ACT, Australia

    R. Prinsley

  3. Conservation and Land Management, Narrogin, WA, Australia

    J. P. Pigott

  4. Department of Agriculture and Fisheries, Bathurst, NSW, Australia

    S. Wakefield

  5. Conservation Commission of the Northern Territory, Darwin, NT, Australia

    F. van der Sommen

  6. Forestry Commission, Hobart, TAS, Australia

    F. Duncan & T. Stadler

  7. Department of Conservation and Environment, Melbourne, VIC, Australia

    R. McLellan & A. Farago

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  1. J. C. Scanlan
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  2. R. Prinsley
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Scanlan, J.C., Prinsley, R., Pigott, J.P. et al. Retention of native woody vegetation on farms in Australia: management considerations, planning guidelines and information gaps. Agroforest Syst 20, 141–166 (1992). https://doi.org/10.1007/BF00055308

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