Suhartoyo, H, Mulligan, DR & Doley, D 2006, 'Evaluating Rehabilitation of Sand Mined Sites at Tomago, NSW ⎯ Measuring Success and its Criteria', in AB Fourie & M Tibbett (eds), Proceedings of the First International Seminar on Mine Closure
, Australian Centre for Geomechanics, Perth, pp. 781-790, https://doi.org/10.36487/ACG_repo/605_69
As an increasing number of mining operations approach closure, criteria by which to measure the success of
rehabilitation efforts have become increasingly important and several workers have developed ecosystem
success indicators (Tongway et al., 1998; Ludwig et al., 2003; Nichols et al., 2005; Grant, 2006). Mined land
rehabilitation as ongoing process designed to restore the physical, chemical and biological qualities or
potentials of air, land and water systems for post-mining land users (ANZMEC, 2000). Operators, regulators
and communities need quantitative data on ecosystem development in order to support decision on mining
relinquishment. Both regulators and mining operators are now addressing these issues throughout Australia,
despite the relatively few examples of mine closure that have been reviewed publicly and approved (Nichols,
et al., 2005).
Mining for heavy mineral sands in the Tomago Sandbeds, north of Newcastle, NSW, by RZM Pty Ltd
(RZM) has disturbed substantial areas of coastal vegetation. However, a continuous rehabilitation program,
initiated by RZM soon after mining commenced in 1972, aimed to return to the mined area plant
communities which would have , as far as practicable, similar species compositions and structures to those
existing before mining (RZM, 1981; RZM, 2000). The ultimate long-term objective of RZM’s rehabilitation
program is dune forests that are similar to undisturbed dune forests in the region. What is yet to be clarified
is whether the rehabilitated ecosystems have reached the desired condition or whether the pattern of
development indicates that the ultimate goal will be achieved.
In judging rehabilitation success, numerous authors have used Odum’s (1969) succession traits as primary
attributes (e.g. Ewel, 1987; Aronson et al., 1993; Aronson and Le Floc’h, 1996; Hobbs and Norton, 1996;
and see review by Ruiz-Jaen and Aide, 2005), emphasising ecosystem or landscape approach for developing
criteria of rehabilitation success (e.g. Tongway et al., 1998). However, in a changing environment, a
quantitative, site-specific and process/dynamic approach is increasingly demanded (Parker, 1997; Cumming,
2003; Choi, 2004).
In case of RZM, multiple disturbances have contributed greatly to the patterns of development of native
forest vegetation on rehabilitated sites not only through the re-mining of a number of rehabilitated areas, but
also through the occurrence of fires across the sites. These events raise further questions regarding the
feasibility of re-establishing native ecosystems. The ability to judge the success or otherwise of rehabilitation
is further complicated by a lack of knowledge on the basic ecosystem processes and the rate of ecosystem
dynamics in many areas (Court et al., 1996; Ormerod, 2003; Maestre et al., 2006). To date, few studies have
considered the effects of multiple disturbances during succession, especially on mine rehabilitation sites
(Brennan, 2003; Ross et al., 2004). Therefore studies of ecosystem development on a rehabilitated mine site
is of critical importance, especially when the complexity of rehabilitation progression is compounded by
In this paper, the development of structural and functional attributes within rehabilitated sand mined sites
with multiple disturbances was examined. Characteristics of ecosystem structure and function were accessed
against the following criteria: first, the overall trend of condition on the rehabilitated sites should be towards
that of a reference site, and second, age-related trends on chronosequence of rehabilitated sites should be
repeatable over time.
Mine Closure 2006 ― Andy Fourie and Mark Tibbett (eds)
© 2006 Australian Centre for Geomechanics, Perth, ISBN 0-9756756-6-4
Mine Closure 2006, Perth, Australia 781
ANZMEC (2000) Strategic framework for mine closure. Ausinfo, Canberra (
Accessed in October 2005.
Aronson, J., Floret, C., Le Floc’h, E., Ovalle, C. and Pontanier, R. (1993) Restoration and rehabilitation of degraded
ecosystems in arid and semi-arid lands. II. Case studies in Southern Tunisia, Central Chile and Northern
Cameroon. Restoration Ecology. 3, pp. 168-187.
Aronson, J. and Le Floc’h, E. (1996) Vital attributes: missing tools for restoration ecology. Restoration Ecology 4, pp.
Bellairs, S.M. (1988) Determining ecological indicators for native vegetation and wildlife habitat rehabilitation success
at the Blair Athol and Tarong mines. Workshop proceedings on Indicators of Ecosystem Rehabilitation Success,
Melbourne October 1988, pp. 105-118.
Bell, L.C. (2001) Establishment of native ecosystems after mining –Australian experience across diverse biogeographic
zones. Ecological Engineering 17, pp. 179-186.
Brennan, K.E.C. (2003) The successional response of spider communities following the multiple disturbances of mining
and burning in Western Australian Jarrah forest. Australian Journal of Entomology. 42, pp. 379-381.
Choi, Y.D. (2004) Theories for ecological restoration in changing environment: Toward ‘futuristic’ restoration,
Ecological Research 19, pp. 75-81.
Court, J., Wright, C. and Guthrie, A. (1996) Environmental assessment and sustainability: Are we ready for the
challenge? Australian Journal of Environmental Management. 3, pp. 42-57.
Cumming, J. (2003) Using process-orientated parameters to assess degradation. Ecological Management and
Restoration. 4, pp. S79-82.
Ewel, J.J. (1987) Restoration is the ultimate test of ecological theory. In: Restoration Ecology, a synthetic approach to
ecological research, Jordan, W.R., Gilpin, M.E., and Aber, J.D. (eds), pp. 331-333. Cambridge University Press,
Grant, C.D. (2006) State and transition successional model for bauxite mining rehabilitation in the Jarrah forest of
western Australia. Restoration Ecology 14, pp. 28-37.
Hobbs, R.J. (2003) Ecological management and restoration: Assessment, setting goals and measuring success.
Ecological Management and Restoration 4, pp. S2-3.
Hobbs, R.J. and Harriss, J.A. (2001) Restoration ecology: repairing the earth’s ecosystem in the new millennium.
Restoration Ecology 4, pp. 239-246.
Hobbs, R.J. and Norton, D.A. (1996) Towards a conceptual framework for restoration ecology. Restoration Ecology 4,
Ludwig, J.A., Hindley, N. and Barnett, G. (2003) Indicators for monitoring minesite rehabilitation: trends on waste-rock
dumps, northern Australia. Ecological Indicators 3, pp. 143-153.
Maestre, F.T, Cortina, J. and Vallejo, R. (2006) Are ecosystem composition, structure, and functional status related to
restoration success? A test from semiarid Mediterranean steppes. Restoration Ecology 14, pp. 258-266.
Mine Closure 2006, Perth, Australia 789
Nichols, O.G., Grant, C. and Bell, L.C. (2005) Developing ecological completion criteria to measure the success of
forest and woodland establishment on rehabilitated mines in Australia. The 2005 National Meeting af the
American Society of Mining and Reclamation, June 2005. Lexington.
Odum, E.P. (1969) The strategy of ecosystem development. Science 64, pp. 262-270.
Ormerod, S.J. (2003) Restoration in applied ecology: editor’s introduction. J. Applied Ecology 40, pp. 44-50.
Palmer, M.A., Ambrose, R.F., and Poff, N.L. (1997) Ecological theory and community restoration ecology. Restoration
Ecology 5, pp. 291-300.
Parker, V.T. (1997) The scale of successional models and restoration objectives. Restoration Ecology. 5, pp. 301-306.
Ross, K.A., Taylor, J.E., Fox, M.D. and Fox, B.J. (2004) Interaction of multiple disturbances: importance of disturbance
interval in the effect of fire on rehabilitating mined areas. Austral Ecology 29, pp. 508-529.
Ruiz-Jaen, M.C. and Aide, T.M. (2005) Restoration success: how is it being measured? Restoration Ecology 13, pp.
RZM (1981) Tomago Mineral Sands Mining Revegetation Assessment. Unpublished Report by The Hunter District
Water Board, ERCON Australia and RZM.
RZM (2000) RZM Tomago Sandbeds Operation Post-Mining Vegetation Assessment Program. Unpublished Report by
SER (Society for Ecological Restoration International Science & Policy Working Group) (2004) The SER International
Primer on Ecological Restoration (http//www.ser.org) accessed in October 2005.
Sopher, C.D. and Baird, J.V. (1978) Soils and soil management. Reston Publishing Company Inc. Virginia, 238 p.
Suhartoyo, H., Mulligan, D.R. and Doley, D. (2006) Trajectory of native forest restoration on sand mined site at
Tomago, NSW: structural development affected by multiple disturbances. Proceedings JKMRC-ISS II, the
University of Queensland, Brisbane, March 2006.
Thom, B.G., Bowman, G.M. and Roy, P.S. (1981) Late quaternary evolution of coastal sand barriers, Port Stephens-
Myall Lakes are, New South Wales. Australia Quaternary Research. 15, pp. 345-364.
Tongway, D., Barnett, G., Kearns, A. and Hindley, N. (1998) Developing success indicators for minesite rehabilitation.
The Australian Coal Review. April edition, pp. 56-59.
Walker, L.R. and del Moral, R. (2003) Primary succession and ecosystem rehabilitation. Cambridge University Press,
Cambridge, UK, 427 p.
Evaluating Rehabilitation of Sand Mined Sites at Tomago, NSW ― Measuring Success and its Criteria H. Suhartoyo, et al.
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